Effects of peptides on animal and human behavior: a review of studies published in the first twenty years of the journal Peptidesa

Effects of peptides on animal and human behavior: a review of studies published in the first twenty years of the journal Peptidesa

Peptides 22 (2001) 2181–2255 Review Effects of peptides on animal and human behavior: A review of studies published in the first twenty years of the...

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Peptides 22 (2001) 2181–2255

Review

Effects of peptides on animal and human behavior: A review of studies published in the first twenty years of the journal Peptides Robert N. McLaya, Weihong Panb,*, Abba J. Kastinb a

b

Naval Medical Center San Diego, Department of Psychiatry, San Diego, CA, USA VA Medical Center and Tulane University School of Medicine, Neuroscience Training Program and Department of Medicine, New Orleans LA 70112-1262, USA Received June 25, 2001; accepted July 27, 2001

Abstract This review catalogs effects of peptides on various aspects of animal and human behavior as published in the journal Peptides in its first twenty years. Topics covered include: activity levels, addiction behavior, ingestive behaviors, learning and memory-based behaviors, nociceptive behaviors, social and sexual behavior, and stereotyped and other behaviors. There are separate tables for these behaviors and a short introduction for each section. © 2001 Elsevier Science Inc. All rights reserved. Keywords: Peptides; Behavior; Activity; Addiction; Ingestion; Learning; Memory; Nociception; Sex; Stereotypy

1. Introduction Why do we do the things we do? This question could be answered on many levels, but increasingly research is discovering ways in which behavior is affected, and sometimes governed, by the actions of peptides. For over twenty years this journal has published articles concerning peptides, many of which involved effects on animal and human behavior. This review is an attempt to catalog those findings. We have focused on studies in which a behavior was elicited after the administration of a peptide. Other types of

studies, such as those studying animals deficient in a particular peptide, or using an agonist to block the effect of a peptide, are for the most part not included, except where the antagonist itself is a peptide or protein. We by no means discount the importance of such studies in understanding how peptides influence behavior, however. Readers wishing to find listings of other effects may be served by reviews previously published in Peptides [3,412,607]. In choosing the articles to include, decisions had to be made concerning what constitutes animal behavior. Usually the choice was obvious. A study of classically conditioned

* Corresponding author. Tel.: ⫹1-504-589-5928; fax: ⫹1-504-522-8559. E-mail address: [email protected] (W. Pan). Abbreviations: 5-HT, Serotonin; 5-HTP, 5-Hydroxytryptophan; 6-OHDA, 6-Hydroxydopamine; A18fa, Ala-Gly Glu-Gly Leu-Ser-Ser-ProPhe-Trp-Ser-Leu-Ala-Ala-Pro-Gln-Arg-Phe-NH2, Admin., Administration; Act., Activity; ACTH, Adrenocorticotropic Hormone; ANF, Atrial Natriuretic Factor; AT, Angiotensin; BBS, Bombesin; BUBUC, Tyr-DCys(StBu)-Gly Phe-Leu-Thr-(OtBu); CCK, Cholecystokinin; CCK-4, Cholecystokinin Tetrapeptide; Tetragastrin; CCK-8, Cholecystokinin Octapeptide; Sincalide; CGRP, Calcitonin Gene-Related Peptide; CRF, Corticotropin Releasing Factor; CTAP, D-Phe-Cys-Try-D-Trp-ORn-Thr-PenThr-NH2; CTOP, D-Phe-Cys-Tyr-D-Tyr-Orn-Thr-NH2; DADELT II, [D-Ala2]Deltorphin; DADLE, D-Ala2-D-Leu5-Enkephalin; DAGO, D-Ala2-MePhe4-Gly-ol5-Enkephalin; DALA, D-Ala2-Methionine-enkephalinamide; DALCE, [D-Ala2,Leu5,Cys6]-Enkephalin; DAMA, D-Ala2Met-Enkephalin Amide; DAME, [D-Ala2-Met5]Enkephalinamide; DAMCK, Tyr-D-Ala-Gly-(NMe)Phe-CH2Cl; DAMGO, Tyr-D-Ala-Gly-

(NMe)Phe-Gly-ol; DDAVP, Desmopressin; 1-deamino-Cys-8-D-Arg-Vasopressin; DGAVP; Desglycinamide-arginine8-Vasopressin; DPEN [D-Pen2,D-Pen5]-Enkephalin; DPDPE, [D-Pen2,D-Pen5]-Enkephalin; DSIP, Delta Sleep-Inducing Peptide; EGF, Epidermal Growth Factor; F8Fa, Phe-Leu-Phe-Gln-Pro-Gln-Arg-Phe-NH2; Frag., Fragment; FMRFa, Phe-Met-Arg-Phe-amide; GHRH, Growth Hormone-Releasing Hormone; GR73632, D-Ala1-[L-Pro9,Me-Leu8]Substance P-(7–11); Ind., Induced; LHRH, Luteinizing Hormone Releasing Hormone; LLTNAM, Lys ␺(CH2NH)-Trp(Nps)-OMe; MCH, Melanin Concentrating Hormone; MIF-1, Melanotropin (MSH) Release-Inhibiting Factor-1; MSH, Melanocyte Stimulating Hormone; NT, Neurotensin; NP-, Neuropeptide-; OT, Oxytocin; Org2766, H-Met-(O2)-Glu-His-Phe-D-Lys-Phe-OH; PACAP, Pituitary Adenylate Cyclase-Activating Polypeptide; PG-KII, pGlu-ProAsn-Pro-Asp-Glu-Phe-Val-Gly-Leu-Met-NH2; PVN, Paraventricular Nucleus; SP, Substance P; TRH, Thyrotropin-Releasing Hormone; TyrMIF-1, Tyr-Pro-Leu-Gly-NH2; Tyr-W-MIF-1, Tyr-Pro-Trp-Gly NH2; VP, Vasopressin; VIP, Vasoactive Intestinal Peptide; YPLG, Tyr-Pro-Leu-Gly

0196-9781/01/$ – see front matter © 2001 Elsevier Science Inc. All rights reserved. PII: S 0 1 9 6 - 9 7 8 1 ( 0 1 ) 0 0 5 5 0 - 2

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eye-blink response is clearly a behavioral study. A study of body temperature is not. In the case of classically conditioned temperature response [65], the choice is less clear. In general, we limited the included studies to those of externally observable actions of an animal or person. Where a study clearly added to the understanding of behavior, however, we were liberal in inclusion. In some cases this may seem somewhat arbitrary. Made only slightly less arbitrary by the existence of authors’ keywords is the decision on how to categorize behavior. We have divided behaviors into seven, broad groups: activity levels, addiction behaviors, ingestive behaviors, learning and memory-based behaviors, nociceptive behaviors, social and sexual behaviors, and stereotyped and other behaviors. We realize that there are many areas of overlap and many ways by which an individual might wish the information organized. Readers with access to the internet and a desire to reorganize the tables to their own liking can find electronic versions of the tables at: http://www.sam.tulane.edu/ classware/pathology/medical_pathology/mcpath/peptides behavior.html For those whose access is limited to the printed page, we hope that these categories are useful. All peptides were administered peripherally unless otherwise noted.

2. Topics 2.1. Activity level Any study of behavior is dependent on the activity level of the organism. Simply put, an animal that is hyperstimulated gives a different response than one that is unconscious or paralyzed. Because of this, motor activity, as measured by distance moved in an enclosed space, is often one of the first effects noted for a peptide. Despite the wealth of data, there is no unifying mechanism yet known to underlie activity level. Some peptides appear to work though common neural substrates such as the ventral striatum and globus pallidus to produce increased activity, whereas others may be independent of such pathways [530]. Still others may regulate activity without directly acting on the brain at all, but rather through peripheral control of metabolism [270]. Peptides appear to be particularly important in the regulation of daily activity and sleep cycles. Balance between neuropeptides such as GHRH and CRF is a key modulator of wakefulness [516]. Other substances such as melatonin are not only believed to be endogenous regulators of sleep, but also have advanced to the clinical stage as pharmaceuticals [192].

Table 1 lists effects on activity published in Peptides. 2.2. Addictive behavior Peptides are critical to the neurobiology of addiction. Often they are the endogenous substrates for the receptors on which drugs of abuse act. The endogenous peptides and their analogs thus have great potential for antagonizing the effects of drugs, and for producing safer, less-addictive versions of addictive substances. Perhaps more importantly, peptide neurotransmitters may underlie certain, central mechanisms of addiction. Drugs of addiction act at a variety of different brain areas and receptors. Common mechanisms of addiction appear to come into play with multiple drugs, however. The mesolimbic dopamine system is the best known [22], but other, peptide-mediated systems also are critical to addiction. Opioid peptide systems within and independent of the mesolimbic system play a role in drug-use reinforcement. CRF and other stress-peptides are critical in withdrawal behaviors, and other peptide neurotransmitters may modulate transmission within the dopamine system [289]. In short, the system is hooked on peptides. Table 2 lists effects on addictive behaviour. 2.3. Nociceptive behavior The mounting of an appropriate response to pain depends on a variety of mechanisms. The painful stimuli must be relayed to the central nervous system. That stimuli must then be appropriately received and a response formed. The signal for the response is then sent back from the nervous system, and the end organ must be capable of carrying out the appropriate action. In some cases pain behaviors can be elicited despite an absence of one or more of these steps. For example, a person might withdraw his hand from an incoming needle because of an expectation of pain even though no pain is or will be experienced. For this review we have relegated such complex behaviors to the learning and memory-related behaviors section. A focus on simple and immediate actions of pain, however, still leaves a number of areas in which peptides influence behavior. The first detector of pain is often referred to as a nociceptor. However, no specific histologic or molecular structure can specifically be said to constitute that receptor. It is believed that noxious stimuli are initially detected by irritation of free, unmyelinated terminal arborizations of nerves. Nociceptive messages are then transmitted by thin myelinated (A-␦) or non-myelinated (C) fibers. A number of substances, including bradykinin, bombesin, galanin, somatostatin, cholecystokinin, vasoactive intestinal peptide, neuropeptide Y, capsaicin, opioids, and cytokines, influence detection and transmission in these nociceptive fibers [43]. Nociceptive signals are carried in the spinal cord via segmental and supraspinal mechanisms. The dorsal horn of

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2183

Table 1 Activity levels Peptide

Movement

Species

Effect

Notes

Vol

Page

Ref

ACTH

Exploratory behavior

Rat

Increased

5

713

546

ACTH ACTH

Motor act. Motor act.

Rat Rat

4 3

117 117

48 48

ACTH frag. (18–24) ACTH frag. (18–24) ACTH frag. (20–24) ACTH/MSH (4–10) analog ebiratide

Sleep Sleep Sleep Sleep

Rat Rat Rat Human

Decreased Increase followed by decrease Increased No effect Increased Decreased

Pre-optic, anterior hypothalamic admin. Chronic admin. Not naltrexone reversible ICV; paradoxical sleep ICV; paradoxical sleep ICV; paradoxical sleep Increased sleep onset latency and increased wakefulness

15 15 15 12

237 237 237 1007

582 582 582 515

ACTH/MSH 4–10 analog ORG 2766 ACTH/MSH 4–10 analog ORG 2766 ACTH/MSH 4–10 analog ORG 2766

Motor act.

Rat

No change

2

255

174

Motor act.

Rat

Increased

First three weeks of life

6

2S 41

1

Motor act.

Rat

Decreased

13

541

235

ACTH/MSH 4–10 analog ORG 2766

Rearing

Rat

Increased

Amygdala admin.; in isolated animals but not controls Rearing and grasping ability occurs earlier in development

6

2S 41

1

ACTH/MSH 4–10 analog ORG 2766 ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10)

Rearing

Rat

Decreased

5

1061

203

Motor act. Motor act.

Rabbit Rat

No change Increased

6 6

2S 97 285

229 189

ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10)

Motor act. Motor act. Motor act.

Rat Rat Rat

Increased Increased Decreased

6 7 9

2S 41 201 277

1 360 593

ACTH/MSH frag. (4–10)

Motor act.

Rat

Increased

9

151

458

ACTH/MSH frag. (4–10)

Rearing

Rat

Increased

6

2S 41

1

Adrenal Peptide E (Frog) Amylin

Motor act. Motor act.

Mouse Rat

No change Decreased

17 17

1291 589

97 91

AT II

Motor act.

Rat

Decreased

9

475

58

BBS BBS BBS

Exploratory behavior Exploratory behavior Motor act.

Rat Rat Rat

Increased Decreased Increased

4 12 4

405 761 693

103 182 355

BBS

Motor act.

Rat

Increased

9

1S 245

260

BBS

Rearing

Rat

Increased

4

693

355

BBS

Sleep

Rat

Decreased

8

237

303

BUBUC

Rearing

Mouse

Increased

11

983

188

In stressed, hypophysectomized rats First three weeks of life In stressed but not controls Neonates; age dependent effect Rearing and grasping ability occurs earlier in development ICV ICV; peptide also antagonized amphetamine-induced hyperactivity; effect blocked by ritanserin ICV; in combination with saralasin but not alone ICV ICV; effect antagonized by neuroleptics With admin. to nucleus accumbens but not nucleus tractus solitarius ICV; effect antagonized by neuroleptics Admin. to multiple brain areas Antagonized by naltrindole

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Table 1 (continued) Peptide

Movement

Species

Effect

Notes

Vol

Page

Ref

Casomorphin (␤)

Sleep

Rat

Neonates; effect blocked by naloxone

11

1

533

Casomorphin analog BCH 325

Motor act.

Rat

Increased quiet sleep decreased active sleep Decreased

Apomorphine-induced hypoactivity; antagonized by sulpiride

16

635

447

Casomorphin analog BCH 325

Sleep

Rat

12

893

483

Casomorphin derivative BCH 325 CCK

Motor act.

Rat

Decreased at low dose, increased at high dose Increased

13

141

287

Exploratory behavior

Rat

Decreased

4

743

109

CCK

Motor act.

Rat

Decreased

7

587

455

CCK analog Boc[diNle]CCK-7 CCK analog Boc[Phe(2,6diMe)7]-CCK-7 CCK analog Boc-[Phe(2Me)7]-CCK-7 CCK analog Boc-[Phe(4Me)7]-CCK-7 CCK analog Boc[Phe(pentaMe)7]-CCK-7 CCK analog Boc[Phe(triMe)7]-CCK-7 CCK analog Boc-CCK-7 CCK-4 CCK-4

Motor act.

Rat

Decreased

In stress-induced hypoactivity Effect blocked by lesions of nucleus tractus solitarius Effect blocked by vagotomy or capsaicin admin. CNS admin.

6

415

461

Rearing

Mouse

Decreased

ICV

19

301

333

Rearing

Mouse

Decreased

ICV

19

301

333

Rearing

Mouse

Decreased

ICV

19

301

333

Rearing

Mouse

No change

ICV

19

301

333

Rearing

Mouse

Decreased

ICV

19

301

333

Rearing Circling Exploratory behavior

Mouse Rat Rat

Decreased No change Decreased

19 7 16

301 809 815

333 367 215

CCK-4

Motor act.

Rat

Decreased

6

91

275

CCK-4

Rearing

Rat

Decreased

6

91

275

CCK-8 CCK-8

Circling Exploratory behavior

Rat Rat

Increased Decreased

7 5

809 529

367 272

CCK-8

Motor act.

Mouse

Decreased

13

155

231

CCK-8

Motor act.

Rat

No change

4

749

480

CCK-8 CCK-8

Motor act. Motor act.

Rat Rat

Decreased Decreased

6 6

53 91

254 275

CCK-8 CCK-8

Rearing Rearing

Mouse Rat

Decreased Decreased

19 4

301 749

333 480

CCK-8

Rearing

Rat

Decreased

ICV ICV In elevated plus maze, but not in open field. With admin. to nucleus accumbens but not other brain areas With admin. to nucleus accumbens but not other brain areas ICV ICV or IV; antagonized by proglumide ICV or IP; antagonized by CCK-A, but not CCK-B, antagonists Ventral tegmental area and nuclei accumbens septi admin. ICV; in VIP-treated rats With admin. to nucleus accumbens but not other brain areas ICV Ventral tegmental area and nuclei accumbens septi admin. With admin. to nucleus accumbens but not other brain areas

6

91

275

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2185

Table 1 (continued) Peptide

Movement

Species

Effect

Notes

Vol

Page

Ref

CCK-8

Sleep

Mouse

Increased

3

701

610

CCK-8, desulfated Ceruletide analogs Ceruletide analogs

Circling Exploratory behavior Sleep

Rat Mouse Mouse

No change Decreased Increased

Hexobarbital-induced sleep ICV

7 2 3

809 2S 701

367 609 610

CGRP

Motor act.

Rat

Increased

17

1183

294

Corticotropin-like intermediate lobe peptide CRF CRF CRF

Sleep

Rat

Increased

15

237

582

Exploratory behavior Motor act. Motor act.

Monkey Rat Rat

Increased Increased Increased

4 6 6

211 3S 53 923

267 392 161

CRF

Motor act.

Rat

Increased

7

597

476

D-Arg dipeptides

Motor act.

Mouse

Decreased

6

35

475

D-Arg tetrapeptides

Motor act.

Mouse

6

35

475

Dermorphin

Sleep

Chicken

Decrease followed by increase Increased

6

3S 137

397

DSIP

Motor act.

Mouse

Decreased

3

729

211

(1–13) (1–6) (1–7) (1–8)

Motor act. Rearing Circling Circling Circling

Rat Rat and mouse Rat Rat Rat

Biphasic effect No change Increased Increased Increased

3 1 8 8 8

623 341 837 837 837

210 578 186 186 186

Dynorphin frag. (2–17) EGF Endorphin (␣) Endorphin (␣) Endorphin (␣)

Circling Motor act. Motor act. Motor act. Motor act.

Rat Sheep Mouse Mouse Mouse

Increased Decreased No change Decreased Decreased

8 9 13 5 5

837 1221 737 129 1011

186 417 271 555 554

Endorphin (␣) Endorphin (␤)

Rearing Motor act.

Mouse Goldfish

Decreased Increased

5 3

129 679

555 277

Endorphin (␤) Endorphin (␤) Endorphin (␤)

Motor act. Motor act. Motor act.

Mouse Rat Rat

No change Decreased Increased

13 1 1

737 179 179

271 603 603

Endorphin (␤) Endorphin (␤) Endorphin (␤)

Motor act. Motor act. Sleep

Rat Sheep Chicken

Increased Decreased Increased

6 9 6

189 1221 3S 137

601 417 397

Enkephalin (Leu) Enkephalin analog DPDPE Enkephalin analog DPDPE

Circling Motor act.

Rat Rat

Increased Increased

8 13

837 755

186 509

Motor act.

Rat

Increased

14

511

509

DSIP Dynorphin Dynorphin Dynorphin Dynorphin

frag. frag. frag. frag.

Hexobarbital-induced sleep Antagonized by nitric oxide synthase inhibitor ICV; paradoxical sleep

With ICV but not SC ICV; greater effect in controls than in hypophysectomized ICV; blocked by naloxone ICV; mildly antagonized by naloxone ICV; hyperactivity antagonized by naloxone ICV; chicks; effect inhibited by naloxone In amphetamine-treated mice; only at selected doses ICV Substantia nigra admin. Substantia nigra admin. Substantia nigra admin.; not antagonized by naloxone Substantia nigra admin. ICV ICV ICV; not antagonized by naloxone At constant temperatures, but not with temp. gradient

In amphetamine-treated, but not controls ICV ICV; chicks; effect inhibited by naloxone Substantia nigra admin. ICV; morphine-induced hyperactivity ICV; morphine-treated rats

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Table 1 (continued) Peptide

Movement

Species

Effect

Notes

Vol

Page

Ref

analog

Sleep

Chicken

Increased

6

3S 137

397

analog

Motor act.

Rat

Decreased

14

511

509

analog

Motor act.

Rat

Decreased

1

139

257

analog

Motor act.

Human

No change

ICV; chicks; effect inhibited by naloxone ICV; DPDPE and morphine-treated rats ICV; antagonized by taurine but not GABA Elderly

12

871

75

Motor act.

Rat

No change

10

403

443

Mouse

No change

16

1283

556

Galanin

Alternating movements Motor act.

Antagonized morphineinduced horizontal, but not vertical, movement ICV

Rat

No change

11

995

304

Galanin Gastrin I (1–17) GH GHRH GHRH Growth hormone

Motor Motor Motor Motor Motor Motor

act. act. act. act. act. act.

Rat Rat Rat Rat Rat Rat

No change No change Decreased Increased Increased Decreased

Periventricular and PVN admin. PVN admin.

13 1 14 14 14 14

323 383 707 707 708 708

354 408 7 7 7 7

Kassinin-like peptide TK PG-KII L-pyroglutamyl-Lleucine MIF-1

Motor act.

Rat

Increased

18

825

437

Jumping

Rat

Delayed

4

417

295

Circling

Rat

No change

2

189

148

MIF-1

Motor act.

Mouse

1

293

147

MIF-1

Motor act.

Rat

Potentiated increase and suppressed decrease No change

Morphine-withdrawalinduced jumping ICV; dopamine or 5HT stimulated circling Morphine-treated

At 4° or 20°C; not altered by melanin or hypophysectomy

1

243

600

MIF-1 MIF-1

Motor act. Motor act.

Rat Rat

Increased Increased

6 12

189 915

601 293

MIF-1

Motor act.

Mouse

1

293

147

MIF-1 Motilin MSH (␣)

Sleep Running Exploratory behavior

Rat Rat Rat

Potentiated increase and suppressed decrease Increased No change Decreased

6 1 17

7 383 171

440 408 207

MSH (␣)

Motor act.

Rat

No change

1

243

600

MSH (␣) MSH (␣)

Motor act. Motor act.

Rat Rat

No change Increased

2 4

255 865

174 598

MSH (␣) MSH (␣)

Motor act. Motor act.

Rat Rat

Increased Increased

6 16

189 821

601 110

MSH (␣)

Rearing

Rat

Increased

16

821

110

Enkephalin DALA Enkephalin DALCE Enkephalin DAMA Enkephalin DDAVP FMRFa

Galanin

Inhibits habituation Effect with acute but not chronic, treatment ICV

In forced swim test; synergy with tricyclic antidepressants Morphine-induced motor act.

Alcohol-induced sleep Admin. to medial preoptic area; antagonized by MCH At 4° or 20°C; not altered by melanin or hypophysectomy Amphetamine-treated; interactions with L/D cycle and age ICV; antagonized by diazepam or baclofen ICV; antagonized by diazepam or baclofen

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2187

Table 1 (continued) Peptide

Movement

Species

Effect

N-acetylmuramyl-Lalanyl-D-isoglutamine

Sleep (REM)

Rat

Naltrindole

Motor act.

Rat

Decrease followed by increase (no overall, average change) No change

NP-E-I

Motor act.

Rat

Increased

NP-E-I

Rearing

Rat

Increased

NPY NPY NPY NPY

Motor act. Motor act. Resting Sleep cycles

Rat Rat Hamster Hamster

Decreased Decreased Decreased Phase shift

NPY antibody

Circling

Mouse

Increased

NPY antibody

Motor act.

Mouse

Increased

NPY frag. (1–30) NT

Motor act. Motor act.

Rat Guinea pig

Decreased Increased

NT NT NT

Motor act. Motor act. Motor act.

Mouse Mouse Mouse

Increased Decreased Decreased

NT NT NT

Motor act. Motor act. Motor act.

Rat Rat Rat

NT

Motor act.

Rat

No change Decreased Complex interactions with dose and enkephalinase inhibitors Decreased

NT NT NT analog [D-Phe11]-NT NT analog [D-Tyr11]-NT NT analog [Phe11]-NT NT analog Eisai hexapeptide

Rearing Sleep Motor act. Motor act. Motor act. Motor act.

Rat Rat Rat Rat Rat Mouse

No change No change Increased Increased Decreased Decreased

Omega-agatoxin IVA

Motor act.

Rat

No change

Omega-conotoxin GVIA

Motor act.

Rat

No change

Opiate antagonist WIN 44,441–3

Motor recovery

Cat

Increased

Notes

ICV; DPDPE- and morphine-treated rats ICV; antagonized by MSH ICV; antagonized by MSH ICV ICV ICV Geniculohypothalamic tract admin.; animals housed in darkness With admin. to ventromedial thalamus but not other brain areas With admin. to hypothalamus but not other brain areas ICV Acted as noxious stimulus Intrathecal admin. Intrathecal admin. Amphetamine- or phencyclidine-induced hyperactivity PVN and IV admin. ICV

ICV; not antagonized by non-peptide NT antagonist PVN and IV admin. PVN and IV admin.

Amphetamine- or phencyclidine-induced hyperactivity ICV; peptides antagonized druginduced hyperactivity ICV; peptides antagonized druginduced hyperactivity Spinal cord injury

Vol

Page

Ref

5

91

184

14

511

509

18

393

470

18

393

470

15 14 9 15

799 909 1389 1475

54 428 300 245

15

607

579

15

607

579

15 13

799 841

54 454

4 4 18

517 517 1223

249 249 473

4 2 11

493 171 551

511 261 399

16

37

442

4 4 2 2 2 18

493 493 171 171 171 1223

511 511 261 261 261 473

19

1017

404

19

1017

404

6

1S 15

169

(continued on next page)

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Table 1 (continued) Peptide

Movement

Species

Effect

Notes

Vol

Page

Ref

OT

Motor act.

Mouse

Increased

5

535

351

OT Saralasin

Sleep Motor act.

Rat Rat

Increased Decreased

ICV; effect enhanced by co-admin. of amastatin Alcohol-induced sleep ICV; in combination with AT II, but not alone

6 9

7 475

440 58

Sauvagine Sauvagine Sauvagine

Motor act. Motor act. Resting

Mouse Rat Rat

Decreased Increased Increased

6 6 6

3S 59 3S 53 3S 53

420 392 392

Secretin Secretin SK

Motor act. Rearing Motor act.

Rat Rat Rat

Decreased No change Increased

4 4 6

739 739 2S 113

83 83 144

Somatostatin Somatostatin frag. (3–8), (9–14), or (7–10) SP

Rearing Rearing

Rat Rat

Decreased No change

10 10

1153 1153

569 569

Motor act.

Rat

Increased

1

103

262

SP SP

Motor act. Motor act.

Rat Rat

No change Increased

9 6

937 2S 113

173 144

SP frag. (1–7) SP frag. (1–7)

Motor act. Vertical movement

Mouse Rat

Increased Increased

4 20

763 1437

219 126

SP frag. analog pyroglutamylSP(7–11) TRH TRH TRH

Motor act.

Mouse

Decreased

4

763

219

Motor act. Motor act. Motor act.

Rat Rat Rat

Decreased Increased Prevented immobility

2 4 5

131 239 743

602 155 403

TRH

Motor act.

Rat

Increased

6

851

605

TRH

Motor act.

Rat

Increased

5

899

276

TRH analog CG 3704

Motor act.

Rat

Increased

6

851

605

TRH analog DN-1417

Motor act.

Rat

Prevented immobility

5

743

403

TRH analog DN-1417 TRH analog MK-711

Motor act. Motor act.

Rat Rat

Increased Prevented immobility

6 5

1093 743

386 403

TRH analog PS-24 TRH analog RX77386 Urotensin I Urotensin I

Motor act. Motor act. Motor act. Resting

Rat Rat Rat Rat

Increased Increased Increased Increased

2 11 6 6

131 897 3S 53 3S 53

602 258 392 392

Vasotocin Vasotocin

Motor act. Sleep

Cat Cat

Decreased Increased

5 5

25 25

204 204

With ICV but not SC Compared with fasting controls ICV ICV Ventral tegmental area admin. ICV ICV ICV; in controls and haloperidol-treated, but not FLA-63- or methyltyrosine-treated ICV Ventral tegmental area admin. Dorsal periaqueductal gray matter admin.

ICV Depression model; effect present in and after swim, but not before No effect of iron deficiency ICV; effect enhanced by ablation of frontal cortex No effect of iron deficiency Depression model; effect present in and after swim, but not before Depression model; effect present in and after swim, but not before Neonates With ICV but not SC Compared to fasting controls Neonates Neonates

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2189

Table 1 (continued) Peptide

Movement

Species

Effect

Notes

Vol

Page

Ref

Vasotocin

Sleep (quiet state)

Rat

Increased

9

487

230

Vasotocin Vasotocin VIP

Sleep (REM) Sleep (REM) Motor act.

Human Human Rat

Increased Increased Increased

Neonates; dose, sleepstage interactions Narcoleptics Prepubertal boys ICV; enhanced by pargyline, suppressed by CCK-8

1 2 6

281 245 53

418 419 254

VIP VIP

Running Sleep

Rat Rat

Decreased Decreased

1 6

383 53

408 254

VIP VP VP

Sleep (REM) Exploratory behavior Exploratory behavior

Cat Rat Rat

Increased Decreased Increased

5 8 2

837 785 437

154 494 205

VP

Motor act.

Mouse

Increased

5

535

351

VP VP

Motor act. Motor act.

Rabbit Rat

No change Increased

6 15

2S 97 229

229 52

VP

Motor act.

Rat

Decreased

4

717

586

VP

Motor act.

Rat

Decreased

13

17

547

VP

Sleep (slow wave)

Human

Increased

17

1253

424

VP analog DGAVP Z-L-glutamyl-L-leucine

Exploratory behavior Jumping

Rat Mouse

Decreased Delayed

8 4

785 417

494 295

Z-L-glycyl-L-proline

Jumping

Mouse

Delayed

4

417

295

Z-L-leucyl-L-glycine

Jumping

Mouse

No change

4

417

295

Z-L-prolyl-L-leucine

Jumping

Mouse

No change

4

417

295

Z-L-prolyl-D-leucine

Jumping

Mouse

Delayed

4

417

295

ICV; pentobarbitalinduced sleep ICV Also increased latency to move and decreased postural freezing ICV; effect enhanced by co-admin. of amastatin Admin. to neonates, testing in adults In VP-deficient and controls Intrathecal admin.; blocked by V1 antagonist Elderly; subchronic treatment Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping

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Table 2 Addictive behavior Peptide

Behaviour

Species

Effect

ACTH fragment (1–24)

Self-admin. damphetamine Alcohol intake

Rat

Decreased

Rat

Decreased

Aminosenktide

Alcohol-aversive reactions

Rat

Decreased

Bombesin Bombesin

Alcohol intake Alcohol-induced righting impairment Apomorphineinduced yawning Alcohol intake

Rat Rat

Decreased Impaired

Rat

Aminosenktide

Casomorphin analogs CCK-8 CTOP Cyclo(Leu-Gly) Dermorphin analog TDAPA Dermorphin analog TDAPG-NH2 Endorphin (␤) Enkephalin analog DAME Enkephalin (Leu) F8Fa F8Fa F8Fa F8Fa and analogs F8Fa antagonist daY8Ra F8Fa, antibody against FMRa and analogs FMRa and analogs FMRFa FMRFa analog F8Fa Galanin Litorin L-pyroglutamyl-L-leucine

Met-enkephalin-FMRFa chimeric peptide MIF-1

Vol

Page

Ref

5

659

307

19

1557

438

19

1557

438

ICV

6 2

2S 103 1S 99

302 187

Decreased

ICV

13

69

464

Rat

Decreased

14

1193

74

Cocaine-induced seizures Morphine-induced analgesia Morphine tolerance

Rat

Attenuated

Effect blocked by antagonist MK-329 ICV

18

1189

57

Rat

10

767

44

Mouse

Inhibited morphine tolerance No effect

11

139

78

Morphine tolerance

Mouse

No effect

11

139

78

Alcohol-induced righting impairment Ethanol preference and intake Ethanol preference and intake Morphine abstinence syndrome Morphine tolerance

Rat

Impaired

2

1S 99

187

Rat

Decreased

10

697

471

Rat

Decreased

10

697

471

Rat

No change

14

1271

459

Rat

No change

14

1271

459

Morphine withdrawal behavior Morphine abstinence syndrome Morphine abstinence syndrome Morphine abstinence syndrome Morphine abstinence syndrome Morphine abstinence syndrome Morphine withdrawal behavior Morphine withdrawal syndromes Opiate withdrawal behavior Alcohol intake Morphinewithdrawal-induced jumping Morphine tolerance

Rat

Precipitates

11

277

334

Rat

Decreased

12

1011

325

Rat

Decreased

ICV; morphinedependent rats ICV; in F8Fa-treated rats

12

1011

325

Rat

Decreased

11

969

335

Rat

Increased

17

83

484

Rat

Increased

14

731

337

Rat

Precipitates

14

47

338

Rat

Potentiated withdrawal

ICV; morphinedependent rats Third ventricle admin.; morphine-dependent rats Third ventricle admin.; morphine-dependent rats Third ventricle admin.; morphine-dependent rats ICV or IP

20

1211

539

Rat

No change

15

1303

237

Rat Mouse

Decreased Delayed

6 4

2S 103 417

302 295

Mouse

Attenuates tolerance

20

471

214

Rat

Inhibited tolerance

6

7

440

EtOH-induced sleep

Notes

ICV or admin to nucleus basalis magnocellularis; alcohol-preferring rats ICV or admin to nucleus basalis magnocellularis; alcohol-preferring rats; in alcohol-naive but not alcohol-experienced

ICV, intrathecal or SC; antinociceptive effect ICV, intrathecal or SC; antinociceptive effect ICV

Chronic ICV admin. with morphine Chronic ICV admin. with morphine ICV

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2191

Table 2 (continued) Peptide

Behaviour

Species

Effect

MIF-1

Morphine-induced analgesia Morphine abstinence syndrome

Rat Rat

Inhibited morphine tolerance Increased

Alcohol-induced righting impairment Morphine tolerance Alcohol intake Apomorphineinduced yawning Apomorphineinduced yawning EtOH-induced sleep Alcohol intake

Rat

Impaired

Mouse Hamster Rat

Inhibited tolerance Increased Decreased

Rat

Decreased

Rat Rat

Inhibited tolerance Decreased

Alcohol-induced righting impairment Alcohol intake

Rat

Reversed

Rat

Decreased

Rat

Improved

Rat

Decreased

VP

Alcohol-induced righting impairment Apomorphineinduced fighting Alcohol intake

Rat

Decreased

VP (Lys)

Alcohol intake

Rat

Reversed

VP (Lys)

Alcohol pref.

Rat

Reversed

VP analog DGAVP

Alcohol intake

Rat

Reversed

VP analog DGAVP

Alcohol pref.

Rat

Reversed

VP analog DGAVP

Alcohol intake

Rat

Decreased

Z-L-glutamyl-L-leucine

Morphinewithdrawal-induced jumping Morphinewithdrawal-induced jumping Morphinewithdrawal-induced jumping Morphinewithdrawal-induced jumping Morphinewithdrawal-induced jumping

Mouse

Neuropeptide FF

Neurotensin NG-nitro-L-arginine NPY NT NT analog [D-Trp11]NT Oxytocin PG-KII Substance P Tachykinin aminosenkide

TRH TRH

Z-L-glycyl-L-proline

Z-L-leucyl-L-glycine

Z-L-prolyl-leucine

Z-prolyl-D-leucine

Notes

Vol

Page

Ref

10

767

44

17

615

336

2

1S 99

187

ICV

17 9 12

619 1389 755

611 300 398

ICV

12

755

398

6 18

7 825

440 437

1

103

262

19

897

416

2

1S 99

187

9

539

441

4

359

382

6

669

453

6

669

453

6

669

453

6

669

453

6

677

102

Delayed

4

417

295

Mouse

Delayed

4

417

295

Mouse

No change

4

417

295

Mouse

No change

4

417

295

Mouse

Delayed

4

417

295

ICV; antagonized by nitric oxide synthase inhibitors ICV

ICV; alcohol-preferring animals ICV; in haloperidol treated animals Selective effect in lateral hypothalamus and nucleus basalis magnocellularis but not other brain areas ICV

Only in AVP deficient rats AVP deficient with enhanced alcohol intake AVP deficient with enhanced alcohol intake AVP deficient with enhanced alcohol intake AVP deficient with enhanced alcohol intake In roman high avoidance and control rats

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the spinal cord contains many peptides and peptide receptors thought to influence pain, including calcitonin gene related peptide, somatostatin, neuropeptide Y, galanin, and substance P. Opioids also exert one of their main actions at this level by inhibiting release of substance P from primary nociceptive fibers. The spinothalamic and spinoreticular tracts are the best known pathways for transmitting pain from spinal cord to brain, although they are by no means the only course. Several descending pathways also allow the brain to influence the response to pain, and different anatomic locations within the brain influence the response to pain in ways not linked directly to the perception of the stimuli. This presents a plethora of locations at which a peptide can act to influence pain-related behavior within the brain. A listing of pain-related behaviors follows in Table 3. The majority of these studies investigated a simple response to a nociceptive stimuli in the presence of a particular peptide. Therefore rather than listing each paper with the behavior expected described (lifted tail, licked paw, etc.) we have included the protocol used to study the pain behavior and whether the peptide had an analgesic or anti-analgesic effect.

2.4. Ingestive behaviors Regulation of the ingestion of food and water is perhaps the behavior most critical to the survival of an animal. Proper regulation of such behavior depends on communication between brain, gut, and fat tissues, a communication that often makes use of peptides. The OB peptide leptin has received the most attention in recent years, but it should not be forgotten that leptin acts by regulating the expression of other neuropeptides in the brain [2]. These peptides are also active in regulating feeding in pathways that are independent of leptin. Other peripheral satiety systems such as that for CCK [374] are also critical. Drinking, like feeding, is highly regulated by peptides. Osmometric thirst is stimulated by osmoreceptors in the anterior basal forebrain and is influenced by VP. Volumetric thirst on the other hand is regulated by the actions of AT-II in the subfornical organ. Salt appetite also is largely mediated by the AT-II subfornical organ system, although other peptides like CRF and ACTH likewise play a role by stimulating the action of mineralocorticoids on the medial amygdala. Still other peptides appear to simultaneously regulate the intake of both water and food [374], or to regulate intake of particular nutrients [150]. Some nutrients blur the line between food and liquid intake. In particular, alcohol ingestion has often been studied in conjunction with investigations of food and/or water intake. For this reason we present those studies here (Table 4) as well as in the addictive behaviors section.

2.5. Social and sexual behaviors In no field is the idea that biochemicals including peptides, may influence or determine behavior more controversial than in the area of social and sexual behaviors. Although the influence on behavior in humans is often not known, the critical role of peptides in regulating these behaviors in animals is well established. Many of the most well known effects of peptides on sexual and social behaviors involve stimulation of other hormones. Lordosis for example, is said to be controlled by estrogen and progesterone, but estrogen and progesterone secretion in turn is controlled by peptides in the hypothalamus and pituitary gland. More direct effects of peptides on the brain also have been observed. For female sexual behavior the ventromedial nucleus of the hypothalamus plays a particularly important role in peptide receptivity whereas in males the medial preoptic area may be more important [73]. The anatomy of aggressive behavior often centers around the periaqueductal gray matter and the ventral tegmental area, although many studies of the effects of peptides have been done systemically. Social interaction, at least in rodents, may depend on smell, and thus many peptide effects are seen in olfactory areas. Emotional responsiveness provoked in the amygdala is known to be critical to social interactions, and thus the actions of peptides may influence social behaviors in this area. Memory and pain also tie in strongly with social behaviors, which, as mentioned in other sections, leaves quite a wide role for peptides. These behaviours are listed in Table 5. 2.6. Learning and memory behaviors Almost all behaviors are modified by experience. Some behavioral studies, however, are established mainly for the purpose of investigating the effects of experience itself on a particular behavior, in short, how well that behavior is learned. Since peptides act as neurotransmitters and neuromodulators in the brain, it is only to be expected that peptides play a critical role in learning behaviors [487]. The quest for peptides that when exogenously administered alter the ability to perform a learned task has also been the target of much research, since these substances may offer therapeutic hope for dementia [40]. The complexities of behavioral studies of learning can be impressive, teasing out different states of memory, effects on attention, reward, or other motivation. Although the purpose is to investigate internal states, results are gleaned by observation of a particular behavior. For this reason we have organized the learning and memory table by protocol used and, when appropriate, by the particular phase of that protocol in which the behavior was observed (Table 6).

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2193

Table 3 Nociceptive behavior Peptide

Protocol

Species

Effect

Notes

Vol

Page

Ref

ACTH

Ear withdrawal

Rabbit

Anti-analgesic

7

1095

588

AT II

Tail flick

Rat

Analgesic

20

335

445

Calcitonin

Hot plate

Mouse

Analgesic

6

3S 277

200

Calcitonin

Hot plate

Mouse

Analgesic

6

3S 277

200

Calcitonin

Hot plate

Rat

Analgesic

6

3S 273

72

Calcitonin Casomorphin (␤)

Hot plate Tail flick, hot water, and tail compression test

Rat Rat

Analgesic Analgesic

7 10

315 539

213 585

Casomorphin analogs

Vocalization test

Rat

Analgesic

15

457

465

Casomorphin analogs CCK

Vocalization test Hot plate

Rat Mouse

Analgesic Analgesic

13 18

483 409

466 587

CCK

Tail flick and hot plate

Rat

Anti-analgesic

9

1295

21

CCK analog Boc[Phe(2,6diMe)7]-CCK-7 CCK analog Boc-[Phe(2Me)7]-CCK-7 CCK analog Boc-[Phe(4Me)7]-CCK-7 CCK analog Boc[Phe(pentaMe)7]-CCK-7 CCK analog Boc[Phe(triMe)7]-CCK-7 CCK analog Boc-CCK-7 CCK-8 CCK-8

Hot plate

Mouse

Analgesic

Endorphin (␤)-induced analgesia ICV; effect antagonized by naloxone ICV, IP, and IV, but no effect SC ICV, IP, and IV, but no effect SC; Ach-induced writhing Intrathecal admin.; antagonized by 6OHDA, haloperidol ICV ICV; greater effect in spontaneously hypertensive rats than controls Effects antagonized by naloxone ICV ICV; analgesic effect antagonized by naloxone but not CCK antagonists Morphine-induced analgesia; effect seen in tail flick but not hot plate ICV

19

301

333

Hot plate

Mouse

Analgesic

ICV

19

301

333

Hot plate

Mouse

Analgesic

ICV

19

301

333

Hot plate

Mouse

No change

ICV

19

301

333

Hot plate

Mouse

Analgesic

ICV

19

301

333

Hot plate Hot plate Hot plate

Mouse Mouse Rat

Analgesic Analgesic Anti-analgesic

19 19 6

301 301 237

333 333 253

CCK-8

Tail flick

Rat

Anti-analgesic

ICV ICV ICV; endorphin-induced analgesia; effect blocked by frontal cortex lesion ICV; morphine- or endorphin-, but not DPDPE-induced, analgesia

16

1229

528

Ceruletide Ceruletide Ceruletide

Mouse Human Human

Analgesic Analgesic Analgesic

2 3 3

2S 61 955 955

132 508 508

Ceruletide analogs Cyclo (Leu-Gly)

Hot plate Pain reporting Tolerance to electricity and thermal pain Hot Plate Tail flick

Mouse Rat

2 10

2S 65 767

609 44

Dalargin

Hot plate

Mouse

Analgesic Inhibited morphine tolerance Analgesic

19

777

482

D-Arg dipeptides

Tail flick

Mouse

Analgesic

6

35

475

Not blocked by naloxone Not blocked by naloxone

Morphine-induced analgesia Carried across the bloodbrain barrier by poly(butyl)cyanoacrylate nanoparticles ICV; mildly antagonized by naloxone

(continued on next page)

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Table 3 (continued) Peptide

Protocol

Species

Effect

Notes

Vol

Page

Ref

Deltakephalin

Tail flick, hot water, and tail compression test

Rat

Analgesic

ICV; greater effect in spontaneously hypertensive rats than controls

10

539

585

Deltorphin Deltorphin II Deltorphin II

Hot plate Tail flick Tail flick

Snail Mice Mouse

Analgesic Analgesic Analgesic

18 17 17

703 1415 619

544 45 611

Deltorphin II analog DADELT II Dermorphin

Tail flick

Rat

Analgesic

13

1123

251

Tail flick

Rat

Analgesic

6

3S 165

59

Tail flick Hot plate and tail flick Tail flick Flinch-jump after foot shock Pain reporting Pain reporting Tail flick Tail flick Hot plate Hot plate Ear withdrawal Hot plate

Rat Rat Mice Rat

Analgesic Analgesic Analgesic Analgesic

ICV; in dermorphin or morphine-tolerant-rats Intrathecal admin. ICV ICV ICV

13 3 17 3

1123 745 1415 41

251 492 45 426

Human Human Rat Rat Slug Slug Rabbit Rat

Analgesic Analgesic Analgesic Anti-analgesic No change No change Analgesic Analgesic

Intrathecal admin. Intrathecal admin. Intrathecal admin. ICV

8 8 6 6 10 10 7 6

191 191 1015 1015 9 9 1095 237

580 580 449 449 116 116 588 253

Hot plate and writhing tests Tail flick Hot plate Hot plate

Mouse

Analgesic

20

865

96

Rat Mouse Slug

Analgesic Analgesic Analgesic

ICV; CCK-8 antagonizes

16 3 10

1229 697 9

528 323 116

Hot plate

Rat

Analgesic

Attenuated by magnetic field

7

449

282

Enkephalin analog DAGO Enkephalin analog DALCE Enkephalin analog DAMA

Hot plate Hot plate Hot plate

Slug Rat Rat

Analgesic Analgesic Analgesic

10 10 1

9 319 139

116 71 257

Enkephalin analog DAMCK

Tail flick

Rat

Analgesic

20

1321

531

Enkephalin analog DPDPE

Hot plate

Snail

Analgesic

19

333

545

Enkephalin analog DPDPE Enkephalin analog DPDPE

Hot plate Tail flick

Snail Rat

Analgesic Analgesic

18 16

703 1229

544 528

Enkephalin analog metkephamide Enkephalin analog DAMGO Enkephalin analog DAMGO FMRFa

Tail flick

Rat

Analgesic

3

869

68

Tail flick

Rat

Analgesic

15

1567

608

Tail flick

Rat

Analgesic

20

1321

531

Hot plate

Rat

No change

10

735

64

Tail flick

Mouse

Analgesic

19

1171

444

Dermorphin Dermorphin analogs DPDPE Dynorphin Dynorphin frag (1–10) Dynorphin frag. (1–13) Dynorphin frag. (1–13) Dynorphin frag. (1–13) Dynorphin frag. (1–17) Dynorphin frag. (1–8) Endorphin (␤) Endorphin (␤) Endorphin (␤) Endorphin (␤) Enkephalin Enkephalin analog DADLE Enkephalin analog DAGO

FMRFa analog [D-Met2]-FMRFa

ICV ICV; not inhibited by NOS inhibitors Intrathecal admin.

ICV ICV; effects enhanced by frontal cortex ablation ICV

ICV ICV; antagonized by taurine and GABA Effect antagonized by naloxone pre-treatment, less so by post-treatment Some cross with pulsedmagnetic field-induced analgesia ICV; CCK-8 does not antagonize Antagonized by naloxone

Effect antagonized by naloxone Morphine-induced analgesia ICV; effect antagonized by antisense to the opioid mu receptor or by antisense to the Gi2␣ G-protein subunit

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2195

Table 3 (continued) Peptide

Protocol

Species

Effect

Notes

Vol

Page

Ref

FMRFa analog A-18Fa

Hot plate

Mouse

Anti-analgesic

12

235

283

FMRFa analog DNS-RFa

Hot plate

Rat

Anti-analgesic

10

735

64

FMRFa analog F8Fa

Hot plate

Mouse

Anti-analgesic

12

235

283

FMRFa analog F8Fa

Hot plate

Mouse

Anti-analgesic

13

603

280

Hemorphin-4

Hot water; tail flick

Mouse

Analgesic

10

747

125

Hemorphin-5

Hot water; tail flick

Mouse

Analgesic

10

747

125

Kentsin

Hot plate and abdominal stretch

Rat

Analgesic

8

613

185

Lys ␺(CH2NH)-Trp(Nps)OMe Lys-Trp

Tail flick (warm water)

Mouse

Analgesic

ICV; defeat-induced analgesia Morphine-induced analgesia ICV; defeat-induced analgesia ICV; morphine- or stress-induced analgesia ICV; naloxone antagonizes ICV; naloxone antagonizes With ICV and intrathecal admin. but not IV; antagonized by naloxone ICV; antagonized by naloxone

13

63

133

Response to heat and electricity Tail flick (warm water)

Mouse and rat

Analgesic

7

39

191

Mouse

Analgesic

13

63

133

20

471

214

Defeat-induced analgesia Defeat-induced analgesia Morphine-treated Rotation-induced analgesia Warm water stressinduced analgesia; no effect with cold waterinduced analgesia Morphine-induced analgesia

6 7 1 10

165 1007 293 493

542 279 147 322

6

1109

190

10

767

44

Morphine-induced analgesia ICV ICV ICis; blocked by GABA mimetics Morphine, but not deltorphin II, tolerance

3

433

121

10 7 8

539 1095 905

585 588 552

17

619

611

7 10 18 4

995 435 1223 517

49 167 473 249

18

1223

473

5 20

747 865

291 96

7 18 9

1095 93 619

588 53 92

3

851

519

Lys-Trp(Nps) Met-enkephalin-FMRFa chimeric peptide MIF-1 MIF-1 MIF-1 MIF-1

Tail flick

Mouse

Analgesic

Hot Hot Hot Hot

Mouse Mouse Mouse Vole

Anti-analgesic Anti-analgesic Anti-analgesic Anti-analgesic

MIF-1

Tail flick

Rat

Anti-analgesic

MIF-1

Tail flick

Rat

MIF-1

Tail flick

Rat

Inhibited morphine tolerance Delayed onset

Morphiceptin MSH Neo-Kyotorphin

Ear withdrawal Tail pinch

Rat Rabbit Mouse

Analgesic No change Analgesic

NG-nitro-L-arginine

Tail flick

Mouse

Inhibited tolerance

N-hexanol-5HTP-5HTP NT NT NT

Tail flick Hot plate Paw pressure test Tail flick

Rat Mouse Mouse Mouse

Analgesic Analgesic Analgesic Analgesic

NT analog Eisai hexapeptide OT Peptide E

Paw pressure test

Mouse

Analgesic

Rat Mouse

Analgesic Analgesic

Somatostatin Somatostatin analog CTAP SP

Tail flick Hot plate and writhing tests Ear withdrawal Tail flick (warm water) Ear withdrawal

Rabbit Mouse Rabbit

No change Analgesic Analgesic

SP

Hot plate

Mouse

Analgesic

plate plate Plate plate

ICV; antagonized by naloxone

ICV ICV Intrathecal admin.; variable effect ICV ICV ICV; only at very high doses ICV ICV; no effect of frag. (1–9) ICV

(continued on next page)

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Table 3 (continued) Peptide

Protocol

Species

Effect

Notes

Vol

Page

Ref

SP

Hot plate

Mouse

Analgesic

Naloxone antagonized effect; SP also antagonized immobilization but not foot shock analgesia

4

763

219

SP SP

Hot plate Motor response and vocalization after electroshock Shock threshold Motor response and vocalization after electroshock Hot plate

Mouse Rat

Analgesic Analgesic

ICV

4 7

31 419

218 390

Cat Rat

Analgesic Analgesic

Intrathecal admin. ICV

5 7

477 419

592 390

Mouse

Analgesic

Naloxone antagonized effect; no effect on stress-induced analgesia ICV

4

763

219

7

419

390

Immobilization but not foot shock analgesia Foot shock-induced analgesia ICV or IV; cold swiminduced analgesia

4

763

219

5

635

69

8

299

79

11

897

258

8

299

70

13

63

133

13

63

133

7 13

1007 1295

279 281

10

493

322

20

971

38

15 15

1508 1567

196 608

5

747

291

6

621

51

7

111

50

SP SP analog DiMe-C7

SP frag. (1–7)

SP frag. (4–11)

Rat

Analgesic

SP frag. (7–11)

Motor response and vocalization after electroshock Hot plate

Mouse

Anti-analgesic

TRH

Tail flick

Rat

Analgesic

TRH

Tail flick

Rat

Analgesic

TRH analog RX 77368

Rat

Analgesic

TRH analog RX 77368

Hot water tail immersion Tail flick

Rat

Analgesic

Trp(Nps)-Lys

Tail flick (warm water)

Mouse

Analgesic

Trp(Nps)␺(COCH2)(R,S)Lys Tyr-MIF-1 Tyr-MIF-1

Tail flick (warm water)

Mouse

Analgesic

Hot plate Hot plate

Mouse Mouse

Anti-analgesic Anti-analgesic

Tyr-MIF-1

Hot plate

Vole

Anti-analgesic

Tyr-W-MIF-1

Tail flick

Rat

Analgesic

Tyr-W-MIF-1 Tyr-W-MIF-1 and cyclic analogs VP

Tail flick Tail flick

Rat Rat

Analgesic Analgesic

Tail flick

Rat

Analgesic

VP

Tail flick

Rat

Analgesic

VP

Tail flick

Rat

Analgesic

VP VP

Tail flick Tail flick and flinchjump Tail flick

Rat Rat

Analgesic Analgesic

ICV but not SC

13 3

17 613

547 292

Rat

Analgesic

ICV

5

747

291

VP analog DDAVP

ICV; cold swim-induced analgesia ICV; antagonized by naloxone ICV; naloxone antagonizes Defeat-induced analgesia Morphine- or stressinduced analgesia Rotation-induced analgesia ICV; no tolerance, but cross-tolerance with morphine

ICV; not antagonized by naloxone ICV; enhanced by neonatal MSG ICV; paraventricular nucleus lesions block effect

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2197

Table 4 Ingestive behaviors Peptide

Behaviour

Species

Effect

[D-Ser , Leu ]enkephalin-Thr6 Acetorphan

Food intake

Rabbit

Decreased

Milk intake

Cat

Increased

ACTH (1–24)

Food intake

Rat

Decreased

Amylin

Food intake

Mouse

Decreased

Amylin Amylin

Food intake Food intake

Rat Rat

Decreased Decreased

Amylin Amylin

Food intake Food intake

Rat Rat

Decreased Decreased

Amylin

Food intake

Rat

Decreased

Amylin

Food intake

Rat

Decreased

Amylin

Food intake

Rat

Decreased

Amylin

Food intake

Rat

Decreased

Amylin

Saccharin preference

Rat

No change

Amylin Amylin ANF III Anorexigenic peptide Anorexigenic peptide Anorexigenic peptide AT antagonist sarthran AT II AT II

Water intake Water intake Water intake Food intake Food intake Water intake Water intake Salt intake Water intake

Rat Rat Sheep Dog Rat Rat Rat Rat Dog

Decreased No change Decreased Decreased Decreased Decreased Increased Increased Increased

AT AT AT AT AT AT

II II II II II II

Water Water Water Water Water Water

intake intake intake intake intake intake

Hamster Pigeon Rat Rat Rat Rat

Increased Increased Increased Increased Increased Increased

AT AT AT AT

II II II II

Water Water Water Water

intake intake intake intake

Rat Rat Rat Rat

Increased Decreased Increased Increased

Water intake

Rat

Increased

2

AT II

5

Notes

In sham feeding but in not non fasted ICV; also blocked stimulation by opiate agonists ICV or IP; in control, fooddeprived, diabetic, and insulin-treated animals Intra-hypothalamic admin. Intra-hypothalamic admin.; rat amylin more effective than human Vagotomized and controls Effect blocked by histamine antagonists, but not serotonin agonists or antagonists Effect blocked by amylin receptor antagonist In diabetic and control rats; effect antagonized by CGRP antagonist in nondiabetic animals ICV; not influenced by area postrema/nucleus of the solitary tract lesion Effect attenuated by lesion of area postrema/nucleus of solitary tract Intra-hypothalamic admin.; conditioned taste aversion Intra-hypothalamic admin. ICV Sham-feeding ICV infusion in females ICV infusion in females ICV ICV Alkalotic animals unresponsive ICV ICV Attenuated by vagotomy Effect blocked by ANF Greater in spontaneously hypertensive rats Sinoaortic-denervated Subfornical organ lesion Antagonized by ANF Synergistic effects with delta2 opioid agonists ICV; intraoral and free drinking measured

Vol

Page

Ref

7

745

208

10

967

17

7

834

435

12

865

370

13 12

961 919

79 18

16 17

457 1317

326 328

17

119

327

18

643

329

19

1533

330

19

309

331

13

961

79

13 19 12 2 4 4 10 3 9

961 1711 77 2S 235 85 85 261 493 1S 201

79 15 342 288 383 383 223 165 298

4 3 4 6 7 9

103 631 159 1S 145 373 979

358 130 491 212 388 595

10 10 11 18

103 423 837 241

266 265 393 606

19

171

241

(continued on next page)

2198

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 4 (continued) Peptide

Behaviour

Species

Effect

Notes

Vol

Page

Ref

AT II

Water intake

Rat

Increased

19

149

436

AT III

Water intake

Rat

Increased

9

979

595

AT IV

Water intake

Rat

No change

9

979

595

Atrial natriuretic factor Atriopeptin II Avian pancreatic polypeptide BBS BBS

Water intake Water intake Food intake

Rat Rat Chicken

Blocked AT effect Decreased Increased

ICV; effect antagonized by tachykinins Greater in spontaneously hypertensive rats In control and spontaneously hypertensive ICV; AT II-treated AT-stimulated drinking ICV

7 11 9

373 837 449

388 393 141

Alcohol intake Carbohydrate intake

Rat Rat

Decreased Decreased

6 11

2S 103 221

302 346

BBS BBS

Fat intake Feeding interval

Rat Rat

Decreased Decreased

11 12

221 761

346 182

BBS BBS BBS

Food intake Food intake Food intake

Baboon Dog Hamster

Decreased Decreased Decreased

4 5 7

687 675 1079

594 316 24

BBS

Food intake

Mouse

Decreased

9

221

490

BBS BBS BBS BBS BBS

Food Food Food Food Food

intake intake intake intake intake

Rat Rat Rat Rat Rat

Decreased Decreased Decreased Decreased Decreased

2 1 2 2 2

431 131 2S 179 261 409

491 339 198 314 498

BBS BBS

Food intake Food intake

Rat Rat

Decreased Decreased

3 3

61 61

581 581

BBS BBS

Food intake Food intake

Rat Rat

Decreased No change

3 5

553 41

199 589

BBS

Food intake

Rat

Decreased

5

547

39

BBS

Food intake

Rat

Decreased

5

481

94

BBS BBS

Food intake Food intake

Rat Rat

Decreased Decreased

5 6

607 1249

131 527

BBS

Food intake

Rat

Decreased

8

237

303

BBS

Food intake

Rat

Decreased

9

729

128

BBS

Food intake

Rat

Decreased

13

1215

99

BBS BBS

Food intake Food intake

Rat Rat

Decreased Decreased

16 17

903 119

523 327

BBS

Food intake

Rat

Decreased

17

119

327

BBS

Food intake

Rat

Decreased

18

1465

500

BBS

Food intake

Rat

Decreased

19

1407

101

Up to 2 hr post IP admin.; time course different for other macronutrients 4th ventricle admin.; blocked by antagonist In control and vagotomized In short- but not long-day photoperiod Greater effect in old than young

ICV or IP Insulin-induced feeding In controls and vagotomized Ventromedial hypothalamus lesions Admin. to hypothalamus, caudate putamen, olfactory tubercle In control and dorsomedial hypothalamic lesioned Sham-feeding, effect inhibited by proglumide ICV Effect blocked by GI neural disconnect In multiple brain sites; strongest in hypothalamus Nucleus of the tractus solitarius admin. ICV; animals developed tolerance after 8 days Effect partially blocked by amylin receptor antagonist Effect not blocked by amylin receptor antagonist Sham feeding and real feeding Weaker effect in high fat diet

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2199

Table 4 (continued) Peptide

Behaviour

Species

Effect

Notes

Vol

Page

Ref

BBS

Food intake

Rat

Decreased

19

309

331

BBS BBS

Food intake Food intake

Rat Rat

Increased Decreased

20 9

437 1S 233

572 260

BBS BBS BBS

Food intake Food intake Food seeking (bar press) Food seeking (bar press) Food seeking (bar press) Liquid food intake Milk intake

Turkey Wolf Rat

Decreased Decreased Decreased

Effect attenuated by lesion of area postrema/nucleus of solitary tract Amygdala admin. In IP or nucleus tractus solitarius, but not nucleus accumbens, admin. ICV and IV

10 7 12

275 969 1435

140 375 55

Rat

Decreased

13

343

347

Rat

Decreased

4

1

242

Rat Rat

Decreased Decreased

2 12

61 761

301 182

Mouse

Decreased

11

265

181

BBS

Milk seeking (bar press) Protein intake

Rat

Decreased

11

221

346

BBS BBS

Saccharin intake Salt intake

Rat Rat

No change Decreased

2 17

61 951

301 183

BBS BBS BBS BBS BBS BBS

Taste aversion Water intake Water intake Water intake Water intake Water intake

Rat Pigeon Pigeon Rat Rat Rat

No change Increased Increased No change Decreased Decreased

BBS BBS BBS BBS antagonist [D-Phe6, ␾Leu13Cpal4]BBS(6–14) BBS antagonist [D-Phe6, ␾Leu13Cpal4]BBS(6–14) BBS antagonist [D-Phe6, ␺Leu13Cpal4]BBS(6–14) Calcitonin Calcitonin Calcitonin

Water intake Water intake Water intake Food intake

Rat Rat Turkey Rat

Food intake

BBS BBS BBS BBS BBS

Rate-dependent effect Capsaicin-treated and controls

4th ventricle admin.; blocked by antagonist

Up to 30 min post IP admin.; time course different for other macronutrients Sodium-deficient animals; in sham- and normaldrinking conditions

3 3 6 12 2 5

61 631 3S 181 1435 2S 179 41

581 130 129 55 198 589

Decreased Decreased Decreased No change

ICV ICV Rate dependent effect ICV or IP In hypothalamus but not caudate putamen, olfactory tubercle ICV ICV ICV and IV Neonates

5 6 10 14

607 3S 181 275 845

131 129 140 431

Rat

Increased

Only on postnatal day 15

17

1119

356

Water intake

Rat

No change

Neonates

14

845

431

Food intake Food intake Food intake

Dog Hamster Mouse

Decreased Decreased Decreased

In control and vagotomized

5 7 3

675 1079 17

316 24 373

Calcitonin Calcitonin

Food intake Food intake

Mouse Rat

Increased or decreased Decreased

9 7

221 729

490 577

Calcitonin Calcitonin

Food intake Food intake

Rat Rat

Decreased Decreased

3 5

749 861

551 297

Normal and genetically obese, diabetics Age dependent effect In control, lactating, and weaning SC or ICV injection

(continued on next page)

2200

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 4 (continued) Peptide

Behaviour

Species

Effect

Notes

Vol

Page

Ref

Calcitonin

Food intake

Rat

Decreased

9

729

128

Calcitonin

Food intake

Rat

Decreased

Nucleus of the tractus solitarius admin. Effect attenuated by lesion of area postrema/nucleus of solitary tract

19

309

331

Calcitonin Calcitonin Casomorphins Casomorphins

Food intake Water intake Carbohydrate intake Fat intake

Wolf Rat Rat Rat

No change Decreased Decreased Increased

7 3 19 19

969 749 325 325

375 551 319 319

CCK CCK

Carbohydrate intake Fat intake

Rat Rat

Decreased Decreased

11 11

221 221

346 346

CCK CCK CCK

Food intake Food intake Food intake

Dog Hamster Mouse

Decreased Decreased Decreased

5 4 9

675 103 221

316 358 490

CCK

Food intake

Mouse

Decreased

18

1275

341

CCK

Food intake

Rat

Decreased

2

409

498

CCK CCK CCK CCK

Food Food Food Food

intake intake intake intake

Rat Rat Rat Rat

Decreased Decreased Decreased Decreased

3 3 3 5

553 535 535 41

199 108 108 589

CCK

Food intake

Rat

Decreased

5

547

39

CCK

Food intake

Rat

No change

6

1S 133

104

CCK

Food intake

Rat

Decreased

6

927

106

CCK

Food intake

Rat

Decreased

4

15

243

CCK

Food intake

Rat

Decreased

7

587

455

CCK CCK

Food intake Food intake

Rat Rat

Decreased Decreased

8 9

763 601

604 503

CCK

Food intake

Rat

Improved

15

913

158

CCK

Food intake

Rat

Decreased

17

119

327

CCK

Food intake

Rat

Decreased

18

643

329

CCK

Food intake

Rat

Decreased

19

1407

101

CCK

Food intake

Rat

Decreased

19

309

331

CCK

Food intake

Rat

Decreased

1

47

344

ICV but not SC injection ICV or IP; antagonized by enterostatin Up to 6 hr post IP admin.; time course different for other macronutrients In control and vagotomized ICV Greater effect in old than young Synergistic effect with leptin In controls but not vagotomized ICV In hypothalamus but not caudate putamen, olfactory tubercle Effect reduced by dorsomedial hypothalamic lesioned Nucleus tractus solitarius injection Effect blocked by PVN lesions Two-day continuous infusion Effect attenuated by capsaicin Control and VP-deficient Effect blocked by capsaicin in fourth ventricle or vagus, but not spinal cord or pyloric region No effect of sex; effects potentiated by estradiol Effect partially blocked by amylin receptor antagonist In diabetic and control rats; effect antagonized by CGRP antagonist in nondiabetic Weaker effect in high fat diet Effect attenuated by lesion of area postrema/nucleus of solitary tract Hypothalamic or IP; norepinephrine-induced feeding

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2201

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

CCK

Rat

Increased

959

264

Rat

Decreased

4

1

242

Mice

No change

2

39

525

CCK

Liquid food intake

Mice

Decreased

2

39

525

CCK

Number of meals

Rat

Decreased

4

15

243

CCK

Protein intake

Rat

Decreased

11

221

346

CCK

Sugar intake

Rat

Decreased

17

593

489

CCK

Time spent eating

Rat

Decreased

4

15

243

CCK

Water intake

Mice

Changed pattern

2

39

525

CCK

Water intake

Rat

Decreased

5

41

589

CCK CCK

Water intake Water intake

Rat Rat

No change No change

8 1

763 47

604 344

CCK agonist devazepide

Food intake

Rat

Increased

In amphetamine-treated but not controls Effect attenuated by food deprivation Normal and geneticallyobese mice Normal and geneticallyobese mice Two-day continuous infusion Up to 1 hr post IP admin.; time course different for other macronutrients Nucleus accumbens admin.; in animals with highbaseline sugar intake, but not in those with lowbaseline intake Two-day continuous infusion Genetically obese mice but not controls In hypothalamus but not caudate putamen or olfactory tubercle Control and VP-deficient Hypothalamic or IP; norepinephrine-induced consumption Effect during estrus, but not diestrus.

16

CCK

Food seeking (bar press) Food seeking (bar press) Inter meal interval

20

451

162

CCK agonist devazepide CCK analog Boc[Phe(2,6diMe)7]CCK-7] CCK analog Boc[Phe(2-Me)7]-CCK-7 CCK analog Boc[Phe(4-Me)7]-CCK-7 CCK analog Boc[Phe(pentaMe)7]CCK-7 CCK analog Boc[Phe(triMe)7]-CCK-7 CCK analog Boc-CCK-7 CCK analog ceruletide CCK analog JMV 170

Meal frequency Food intake

Rat Mouse

No change Decreased

20 19

451 301

162 333

Food intake

Mouse

Decreased

19

301

333

Food intake

Mouse

Decreased

19

301

333

Food intake

Mouse

Decreased

19

301

333

Food intake

Mouse

Decreased

19

301

333

Food intake Food intake Food intake

Mouse Human Rat

Decreased Decreased Decreased

19 3 11

301 607 873

333 506 410

CCK analog JMV 180

Food intake

Rat

Decreased

11

873

410

CCK antagonist L364,718 CCK antagonist L365,260 CCK antagonist L365,260

Food intake

Rat

Increased

40 min IV infusion After ICV but not IP admin. After ICV but not IP admin. CCK-A selective antagonist

12

1215

448

Food intake

Rat

No change

CCK-A selective antagonist

12

1215

448

Sugar intake

Rat

Decreased

IP and nucleus accumbens admin.; CCK-B receptor selective drug; high-sugar consuming rats

17

593

489

CCK

(continued on next page)

2202

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

CCK antagonist L365,260

Sugar intake

Rat

Increased

17

593

489

CCK frag. CCK-4

Rat

No change

19

849

376

Rat

Induced aversion

ICV, IV, or IP

19

849

376

Rat

Induced conditioning

16

539

Rat

Induced aversion

17

483

377

CCK-8

Taste aversion conditioning Taste aversion conditioning Taste aversion conditioning Taste aversion conditioning Alcohol intake

IP and nucleus accumbens admin.; CCK-B receptor selective drug; low-sugar consuming animals ICV, IV, or IP

Rat

Decreased

14

1193

74

CCK-8 CCK-8

Food intake Food intake

Chicken Dog

Decreased Decreased

3 8

739 651

142 468

CCK-8

Food intake

Hamster

Decreased

7

1079

24

CCK-8 CCK-8

Food intake Food intake

Human Mouse

Decreased

3 8

133 845

507 526

CCK-8 CCK-8 CCK-8 CCK-8

Food Food Food Food

Mouse Rat Rat Rat

Decreased Decreased Decreased Decreased

19 2 2 5

301 431 261 481

333 491 314 94

CCK-8

Food intake

Rat

Decreased

7

729

577

CCK-8

Food intake

Rat

Decreased

7

729

577

CCK-8

Food intake

Rat

Decreased

8

223

495

CCK-8 CCK-8

Food intake Food intake

Rat Rat

Decreased Decreased

9 9

1s 207 1093

481 252

CCK-8 CCK-8

Food intake Food intake

Rat Rat

Decreased Decreased

9 14

989 1193

460 74

CCK-8

Food intake

Rat

Decreased

17

1313

574

CCK-8

Food intake

Rat

Decreased

19

977

89

CCK-8

Food intake

Rat

Decreased

5

97

560

CCK-8 CCK-8

Food intake Food intake

Sheep Sheep

Decreased Decreased

1 3

51 963

137 138

CCK-8 CCK-8

Food intake Food seeking (bar press)

Wolf Rat

Decreased Decreased

7 4

969 351

375 590

CCK-8

Milk seeking (bar press)

Mouse

Decreased

11

265

181

CCK frag. CCK-8 CCK frag. CCK-8 CCK frag. CCK-8

intake intake intake intake

Effect blocked by antagonist MK-329 ICV In ICV but not IV; fooddeprived and insulininduced feeding Greater effect in short-day photoperiod 30 min IV infusion Linear dose relationship in males but not females; greater effect in lean than in obese

Insulin-induced feeding Sham-feeding, effect inhibited by proglumide Greater in lactating mothers than after weaning Resistance to effect during lactation and weaning In control and tumorbearing Reversed by proglumide ICV; proglumide antagonized; no effect from atropine or naloxone NPY treated Effect blocked by antagonist MK-329 In free feeding old and young, but not fixed feeding young. Stronger effect with progesterone and estradiol Tumor-bearing and control animals 6 hr ICV infusion ICV; no effect in cisterna magna Effect altered by GABAergic, dopaminergic and opioid drugs

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2203

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

CCK-8 CCK-8

Water intake Water intake

Chicken Dog

Decreased Decreased

3 8

739 651

142 468

CCK-8

Water intake

Mouse

Decreased

8

845

526

CCK-8 CCK-8S Ceruletide

Water intake Food intake Food intake

Mouse Rat Human

Increased Decreased No change

ICV In ICV but not IV; fooddeprived and insulininduced feeding In obese, but not lean, males In lean and obese females

8 17 8

845 355 455

526 576 77

Ceruletide

Food intake

Rat

Decreased

5

1149

499

CGRP

Food intake

Mouse

Decreased

17

511

369

CGRP CGRP

Food intake Food intake

Rat Rat

Decreased Decreased

5 19

861 1533

297 330

CGRP

Mouse

Decreased

17

511

369

CGRP CRF

Milk seeking (bar press) Water intake Food intake

Mouse Rat

No change Decreased

17 4

511 807

369 209

CRF CRF

Food intake Food intake

Rat Rat

Decreased Decreased

6 13

3S 53 879

392 226

CRF

Food intake

Rat

Decreased

20

509

571

CRF

Food seeking (bar press) Food intake

Monkey

Increased

In control and vagotomized, but not adrenalectomized ICV admin. ICV; tail-pinch-induced feeding ICV; not influenced by melanocortin antagonist ICV

10

1199

384

Goldfish

Increased

Serotonin-induced anorexia

19

505

136

Food intake

Rat

ICV; tail-pinch- or NPYinduced feeding

13

879

226

Ethanol preference and intake Food intake Food intake

Rat

Increase at low doses; decrease at high doses Decreased

10

697

471

Goldfish Rat

Increased Increased

17 7

421 711

135 332

Water intake Food seeking (bar press) Water intake Water intake Water intake Food intake Food intake Food intake

Rat Monkey

Increased Increased

18 10

241 1199

606 384

Pigeon Rat Rat Chicken Rat Rat

No change Decreased Increased No change Increased Increased

6 6 18 8 4 7

3S 181 3S 181 241 585 797 711

129 129 606 518 372 332

Food Food Food Food Food

Rabbit Rat Rat Rat Rat and mouse Rat Rat Rat

Increased Increased Increased Increased Increased

7 4 4 4 1

745 797 797 797 341

208 372 372 372 578

4 4 4

797 797 797

372 372 372

CRF antagonist ␣-helical CRF (9–41) CRF antagonist ␣-helical CRF (9–41) DAME DAMGO DADLE Deltorphin II Dermorphin Dermorphin Dermorphin DPDPE Dynorphin Dynorphin Dynorphin Dynorphin Dynorphin Dynorphin Dynorphin Dynorphin

A frag. frag. frag. frag.

(1–10) (1–11) (1–13) (1–13)

Dynorphin frag. (1–8) Dynorphin frag. (1–9) Dynorphin frag. (3–13)

intake intake intake intake intake

Food intake Food intake Food intake

No change No change Increased

Obese women on restricted diet With IP, but not ICV, admin. Not influenced by CCK receptor antagonist ICV; not influenced by area postrema/nucleus of the solitary tract lesion

Admin. to nucleus accumbens septi Interactions with AT II ICV; blocked by naloxone ICV ICV Interactions with AT II ICV; 2 day old ICV Admin. to nucleus accumbens septi

ICV; not reversible by naloxone

(continued on next page)

2204

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

EGF Eledosin Endorphin (␤) Endorphin (␤) Endorphin (␤)

Water intake Water intake Food intake Food intake Food intake

Sheep Pigeon Chicken Goldfish Pigeon

Decreased Increased Increased Increased Increased

9 3 9 17 5

1221 631 709 421 691

417 130 345 135 145

Endorphin (␤)

Food intake

Rat

Increased

3

421

313

Endorphin (␤)

Food intake

Rat

Increased

7

711

332

Endorphin (␤)

Water intake

Chicken

9

709

345

Endorphin (␤) Enkephalis analog DAME Enkephalis analog DAME Enkephalis analog DAME Enkephalin (Leu)

Water intake Milk intake Sugar intake Water intake Ethanol preference and intake Sugar intake Water intake Food intake

Pigeon Cat Rat Rat Rat

Decrease at early times, followed by increase at late times No change Decreased No change Decreased Decreased

ICV ICV ICV Mu-receptor effect Pre-fed, ICV injections, only for avian peptide Hypothalamic PVN injection Admin. to nucleus accumbens septi ICV

5 10 10 10 10

691 967 697 697 697

145 17 471 471 471

Rat Rat Rat

No change Decreased Increased

10 10 4

697 697 287

471 471 349

Water intake

Rat

Increased

4

287

349

Food intake

Goldfish

Increased

17

421

135

Carbohydrate intake Fat intake

Rat Rat

No change Decreased

18 18

785 785

409 409

Enterostatin Enterostatin

Fat intake Fat intake

Rat Rat

Decreased Decreased

18 19

657 325

318 319

Enterostatin Enterostatin

Feeding rate Food intake

Rat Rat

Decreased Increased

19 17

557 885

321 451

Enterostatin

Food intake

Rat

18

1341

320

F8Fa

Food intake

Rat

Decreased at low doses but not high doses Decreased

17

353

379

FMRFa

Food intake

Rat

Decreased

6

847

278

Galanin Galanin Galanin

Carbohydrate intake Fat intake Fat preference

Rat Rat Rat

No change No change Increased

18 18 9

207 207 309

496 496 541

Galanin

Food intake

Rat

Decreased

11

995

304

Galanin Galanin Galanin

Food intake Food intake Food intake

Rat Rat Rat

Increased Increased Increased

15 15 17

1303 1267 237

237 497 25

Galanin

Food intake

Rat

Increased

9

309

541

Gastrin

Food intake

Rat

No change

5

41

589

Enkephalin (Leu) Enkephalin (Leu) Enkephalin analog DALA Enkephalin analog DALA Enkephalin analog DPEN Enterostatin Enterostatin

Pre-fed, ICV injection

PVN injection PVN injection; only when food available

ICV ICV; effect blocked by kappa opioid antagonist ICV ICV; antagonized by casomorphins PVN and amygdala admin. ICV; high fat foods; free fed rats Effect when admin. to PVN or amygdala but not other brain areas ICV; no additive effect with naloxone ICV; kappa opiate agonistinduced PVN admin. PVN admin. Paraventricular nucleus admin. After admin. to PVN and periventricular region, but not other hypothalamic areas ICV ICV; effects not sustained Effect blocked by mu antagonists in animals fed high-fat diet Paraventricular nucleus admin. In hypothalamus, caudate putamen, olfactory tubercle

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2205

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

Gastrin Gastrin

Water intake Water intake

Rat Rat

Decreased Decreased

Hypothalamic admin. Admin. to caudate putamen, olfactory tubercle

5 5

41 41

589 589

Gastrin (1–17) Gastrin (1–17) Gastrin-related peptide

Food intake Water intake Milk seeking (bar press) Feeding interval Food intake Food intake Food intake Food intake

Rat Rat Mouse

Decreased Decreased Decreased

1 1 11

383 383 265

408 408 181

Rat Rat Rat Rat Rat

Increased Decreased Decreased Decreased Decreased

19 2 3 16 17

1439 2S 179 833 903 107

462 198 517 523 524

Gastrin-releasing peptide

Food intake

Rat

Decreased

18

1465

500

Gastrin-releasing peptide Gastrin-releasing peptide

Food intake Food intake

Rat Rat

No change Decreased

19 20

1439 731

462 16

Gastrin-releasing peptide

Milk intake

Rat

Decreased

20

737

463

Gastrin-releasing peptide

Salt intake

Rat

Decreased

17

951

183

Gastrin-releasing peptide

Sugar intake

Rat

Decreased

20

737

463

Gastrin-releasing peptide GHRH

Water intake Carbohydrate intake

Rat Rat

No change No change

3 15

833 1343

517 150

GHRH

Food intake

Rat

Increased

15

1343

150

GHRH

Food intake

Rat

Increased

16

595

558

GHRH

Food intake

Rat

Decreased

2

261

314

GHRH

Food intake

Rat

9

1S 35

557

GHRH

Protein intake

Rat

Increase at low doses; decrease at high doses Increased

15

1343

150

GHRH, antibody to

Carbohydrate intake

Rat

No change

16

7

149

GHRH, antibody to

Protein intake

Rat

Decreased

16

7

149

Glucagon

Food intake

Dog

Decreased

5

675

316

Glucagon Glucagon

Food intake Food intake

Hamster Mouse

No change Decreased

7 9

1079 221

24 490

Glucagon Glucagon Glucagon

Food intake Food intake Food intake

Rat Rat Rat

Decreased Decreased Increased

3 3 8

163 163 943

195 195 194

Gastrin-releasing Gastrin-releasing Gastrin-releasing Gastrin-releasing Gastrin-releasing

peptide peptide peptide peptide peptide

Synergistic effect with neuromedin B In real feeding but not sham feeding Sham feeding; Synergistic effect with pre-feeding Effect on free feeding but not intraoral intake Sodium-deficient animals; in sham- and normaldrinking Effect on free feeding but not intraoral intake Suprachiasmatic nucleus/ medial preoptic area admin. Suprachiasmatic nucleus/ medial preoptic area admin.; effect blocked by methylnaltrexone Suprachiasmatic nucleus admin.; light-cycle dependent effect Hypothalamic admin.; insulin-induced feeding ICV Suprachiasmatic nucleus/ medial preoptic areas admin.; effect blocked by methyl-naltrexone Suprachiasmatic/preoptic area admin.; feeding studied at dark onset Suprachiasmatic/preoptic area admin.; feeding studied at dark onset In control, but not vagotomized Greater effect in old than young Sham-feeding

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2206

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

Glucagon

Food intake

Rat

Decreased

Effect blocked by amylin receptor antagonist when given at dark onset

17

119

327

Glucagon frag. (1–21) Glucagon-like peptide-1(7–37) amide Insulin Insulin Insulin

Food intake Food intake

Rat Rat

No change Decreased

ICV; in lean and obese

8 19

943 869

194 248

Food intake Food intake Food intake

Rat Rat Rat

Streptozocin-diabetic rats

4 12 13

79 425 721

124 98 348

Insulin Interleukin-1␤

Food intake Food intake

Rat Rat

Increased Increased Decreased (returned to same as controls) Decreased Decreased

19 14

1549 175

156 553

Interleukin-1␤

Food intake

Rat

Decreased

17

517

502

Kassinin

Water intake

Rat

Decreased

10

125

422

Leptin Leptin

Food intake Food intake

Mouse Mouse

Decreased Decreased

20 18

595 1275

368 341

Leptin Litorin Litorin Litorin Litorin Litorin Litorin MIF-1

Food intake Alcohol intake Food intake Food intake Water intake Water intake Water intake Food intake

Rat Rat Rat Rat Pigeon Rat Rat Rat

Decreased Decreased Decreased Decreased Increased Decreased Decreased No change

19 6 2 5 6 6 5 15

1549 2S 103 2S 179 607 3S 181 3S 181 607 243

156 302 198 131 129 129 131 216

MIF-1 Motilin

Water intake Food intake

Rat Mouse

Decreased Increased

1 19

353 987

407 13

Motilin Motilin Motilin MSH (␣)

Food intake Food intake Water intake Food intake

Rat Rat Rat Rat

Decreased Increased Decreased Decreased

1 6 1 7

383 41 383 834

408 193 408 435

MSH frag. analog Lys-D-Pro-Thr MSH frag. Lys-Pro MSH frag. Lys-Pro-Val

Food intake

Rat

Decreased

14

175

553

Food intake Food intake

Rat Rat

Increased Increased

14 14

175 175

553 553

Neoendorphin (␣)

Food intake

Rat

Increased

7

711

332

Neurokinin A

Water intake

Rat

Decreased

11

339

423

Neuromedin B

Food intake

Rat

Decreased

17

107

524

Neuromedin B

Salt intake

Rat

No change

17

951

183

NPY NPY

Alcohol intake Amino acid deficient diet intake

Hamster Rat

Increased Decreased

9 19

1389 527

300 111

Hypoglycemic rats Antagonized by MSH frag. Lys-Pro-Val and frag. analog Lys-D-Pro-Thr ICV; effect blocked by NPY Neonates; AT II-induced thirst Genetically obese mice Synergistic effect with CCK Hypoglycemic rats

ICV ICV ICV ICV Peptide YY-induced hyperphagia ICV; attenuated by motilin receptor antagonist Fasted subjects ICV; also blocked stimulation by opiate agonists In IL-1-induced anorexia but not controls In IL-1␤-induced anorexia In IL-1-induced anorexia but not controls Admin. to nucleus accumbens septi Neonates; in control and AT-treated Synergistic effect with gastrin releasing peptide Sodium-deficient animals; in sham- and normaldrinking Anterior piriform complex admin.; threonineimbalanced model

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2207

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

NPY NPY NPY

Carbohydrate intake Carbohydrate intake Carbohydrate intake

Rat Rat Rat

Increased Increased Increased

6 12 18

1205 1251 207

510 312 496

NPY NPY NPY

Fat intake Fat intake Food intake

Rat Rat Chicken

No change No change Increased

12 18 8

1251 207 585

312 496 518

NPY NPY

Food intake Food intake

Chicken Dog

Increased Decreased

Admin. to PVN PVN admin. PVN admin.; in carbohydrate-preferring, but not control, rats PVN admin. PVN admin. ICV; 2 day old; in animals that did not have convulsions ICV ICV; in insulin-treated, but not fasted or satiated

8 8

823 651

299 468

NPY NPY NPY

Food intake Food intake Food intake

Hamster Mouse Rat

Increased Increased Increased

9 10 5

1389 963 1025

300 177 315

NPY NPY

Food intake Food intake

Rat Rat

Increased Increased

7 9

1189 723

512 269

NPY

Food intake

Rat

Increased

9

1269

467

NPY

Food intake

Rat

Increased

9

989

460

NPY

Food intake

Rat

Increased

10

1283

81

NPY

Food intake

Rat

Increased

12

609

411

NPY NPY NPY

Food intake Food intake Food intake

Rat Rat Rat

Increased Increased Increased

12 13 14

1251 581 475

312 513 514

NPY NPY

Food intake Food intake

Rat Rat

Increased Increased

15 16

799 599

54 112

NPY

Food intake

Rat

Decreased

17

797

80

NPY

Food intake

Rat

Increased

17

797

80

NPY

Food intake

Rat

Increased

17

797

80

NPY

Food intake

Rat

Increased

17

517

502

NPY

Latency to onset of feeding Milk seeking (bar press) Protein and fat intake Protein intake Sugar intake Sugar intake Water intake

Rat

Decreased

9

1269

467

Mouse

Increased

12

1329

178

Rat Rat Rat Rat Chicken

No change Decreased Decreased Increased No change

6 12 20 20 8

1205 1251 601 601 823

510 312 543 543 299

NPY NPY NPY NPY NPY NPY

ICV Effect inhibited by naloxone and haloperidol PVN of hypothalamus ICV; satiated females; attenuated by adrenalectomy; no effect from CCK ICV; effect attenuated by hypothalamic transection ICV; attenuated by intravenous infusions of glucose, but not fructose Paraventricular hypothalamic admin.; effect blocked by pertussis toxin Sustained admin. to PVN of hypothalamus PVN admin. Hypothalamic admin. Hypothalamic perifornical admin.; similar effects at different times of day ICV Medial PVN and lateral perifornical hypothalamus admin. Hypothalamic admin.; tumor-bearing Hypothalamic admin.; constant infusion; tumorbearing Daily increasing doses; effect in control but not tumor-bearing ICV; in IL-1␤-treated and controls ICV; effect attenuated by hypothalamic transection ICV; also overcame taste aversion Admin. to PVN PVN admin. ICV; continuous infusion ICV; single admin. ICV

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2208

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

NPY

Water intake

Dog

Decreased

ICV; in insulin-treated, but not fasted or satiated

8

651

468

NPY NPY

Water intake Water intake

Hamster Rat

Increased Increased

9 5

1389 1025

300 315

NPY analog [Leu31, Pro34]NPY NPY analog [Leu31, Pro34]NPY NPY analog [Leu31, Pro34]NPY NPY analog [Leu31, Pro34]NPY NPY analog C2-NPY

Carbohydrate intake

Rat

Increased

12

1251

312

Fat intake

Rat

No change

12

1251

312

Food intake

Rat

Increased

12

1251

312

Protein intake

Rat

Decreased

12

1251

312

Food intake

Rat

13

581

513

NPY analog [Pro34]NPY NPY antagonist BW1229U91 NPY antibodies NPY antibody

Food intake Food intake

Rat Rat

Increased (slight effect) Increased No change

Analog is Y1 selective ICV; control and obese

13 20

581 367

513 583

Food intake Food intake

Rat Rat

Decreased Decreased

13 15

581 607

513 579

NPY frag. (1–30) NPY frag. (13–36)

Food intake Carbohydrate intake

Rat Rat

No change Decreased

15 12

799 1251

54 312

NPY frag. (13–36)

Food intake

Rat

Decreased

12

1251

312

NPY frag. (13–36)

Protein intake

Rat

Decreased

12

1251

312

NPY NPY NPY NPY NPY NPY NPY NPY NT

Food intake Carbohydrate intake Fat intake Food intake Food intake Protein intake Food intake Food intake Food intake

Mouse Rat Rat Rat Rat Rat Mouse Rat Rat

No change Increased No change Increased Increased Increased No change No change Decreased

10 12 12 12 13 12 10 13 4

963 1251 1251 1251 581 1251 963 581 493

177 312 312 312 513 312 177 513 511

NT

Food intake

Rat

Decreased

9

729

128

NT

Water intake

Rat

No change

4

493

511

OT

Food intake

Rat

Decreased

10

89

12

OT

Food intake

Rat

Decreased

12

113

405

OT OT

Food intake Food intake

Rat Rat

Decreased Decreased

17 17

1119 1119

356 356

OT

Latency to first meal

Rat

Increased

ICV In ventromedial hypothalamus and ventromedial and ventrolateral thalamus, but not other hypothalamic areas ICV PVN admin.; frag. is Y2 selective PVN admin.; frag. is Y2 selective PVN admin.; frag. is Y2 selective ICV PVN admin. PVN admin. PVN admin. Hypothalamic admin. PVN admin. ICV Hypothalamic admin. Hypothalamic PVN injection Nucleus of the tractus solitarius admin. Hypothalamic PVN injection IP or ICV; blocked by pretreatment with d(CH2)5Tyr(Me)-Orn8vasotocin Antagonist blocked effect, but had no effect on its own In neonates and adults In neonates and adults; effect greater in adults IP or ICV; blocked by pretreatment with d(CH2)5Tyr(Me)-Orn8vasotocin

10

89

12

frag. (20–36) frag. (2–36) frag. (2–36) frag. (2–36) frag. (2–36) frag. (2–36) frag. (26–36) free acid

Effect inhibited by naloxone and haloperidol PVN admin.; analog is Y1 selective PVN admin.; analog is Y1 selective PVN admin.; analog is Y1 selective PVN admin.; analog is Y1 selective Analog is Y2 selective

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2209

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

OT

Time spent eating

Rat

Decreased

10

89

12

OT antagonist vasotocin PACAP PACAP

Food intake Food intake Food intake

Rat Mouse Rat

Increased Increased Decreased

17 13 16

1119 1133 1511

356 371 82

PACAP

Water intake

Rat

Decreased

16

1511

82

Pancreatic polypeptide Pancreatic polypeptide Pancreatic polypeptide

Food intake Food intake Food intake

Chicken Dog Human

Increased No change Decreased

IP or ICV; blocked by pretreatment with d(CH2)5Tyr(Me)-Orn8vasotocin Only on postnatal day 10 ICV Hypothalamic admin.; in NPY-treated and controls Hypothalamic admin.; in NPY-treated and controls Intracerebral inj.; 2 day old

8 5 14

585 675 497

518 316 42

Pancreatic polypeptide Pancreatic polypeptide Peptide YY Peptide YY Peptide YY

Food intake Food intake Carbohydrate intake Food intake Food intake

Rat Rat Rat Chicken Rat

Increased Decreased Increased Increased Increased

11 20 6 8 15

673 1445 1205 823 243

19 14 510 299 216

Peptide YY Peptide YY PG-KII

Protein and fat intake Water intake Alcohol intake

Rat Chicken Rat

No change No change Decreased

6 8 18

1205 823 825

510 299 437

PG-KII

Food intake

Rat

No change

18

825

437

PG-KII

Water intake

Rat

Decreased

18

825

437

Ranatensin Ranatensin Ranatensin Ranatesin Sauvagine

Water intake Water intake Water intake Food intake Food intake

Pigeon Rat Rat Rat Rat

Increased Decreased Decreased Decreased Decreased

6 6 5 5 6

3S 181 3S 181 607 607 3S 53

129 129 131 131 392

Somatostatin

Amino acid deficient diet intake

Rat

Biphasic time and dose-related-effect

19

527

111

Somatostatin Somatostatin Somatostatin Somatostatin analog SMS 201–995 Somatostatin antibody Tachykinin agonist NP-␥

Food Food Food Food

Dog Rat Rat Rat

No change Decreased Increased Increased

5 19 19 9

675 991 991 1S 211

316 477 477 117

Food intake Water intake

Rat Rat

Decreased Decreased

9 19

1S 211 149

117 436

Tachykinin aminosenkide

Alcohol intake

Rat

Decreased

19

897

416

Tachykinin aminosenkide

Food intake

Rat

Decreased

19

897

416

Tachykinin aminosenktide

Water intake

Rat

Decreased

19

897

416

intake intake intake intake

Prader-Willi syndrome; effect only seen in females Hypothalamic admin. ICV Admin. to PVN ICV ICV; antagonized by naloxone Admin. to PVN ICV ICV; alcohol-preferring animals ICV; alcohol-preferring animals ICV; alcohol-preferring animals; in AT-stimulated drinking, but not control, animals ICV ICV ICV ICV ICV, and SC in vagotomized animals Anterior piriform complex admin.; Threonineimbalanced model In dark phase In light phase ICV ICV ICV; AT-stimulated drinking Selective effect in lateral hypothalamus and nucleus basalis magnocellularis but not other brain areas Effect with admin. to stria terminalis but not other brain areas Effect with admin. to stria terminalis but not other brain areas

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2210

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 4 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

Tachykinin analog Suc-[Asp6,MePhe8]Substance P(6–11) Tachykinin analog Suc-[Asp6,MePhe8]Substance P(6–11) Tachykinins Tachykinins TRH Tuftsin

Food intake

Rat

Decreased

Alcohol-preferring animals

16

533

88

Food intake

Rat

Alcohol-preferring animals

16

533

88

Water intake Water intake Food intake Food seeking (bar press) Food intake

Pigeon Rat Dog Monkey

Decreased at low doses but not high doses Increased Decreased Decreased Increased

ICV ICV Sham-feeding ICV

6 6 2 10

3S 181 3S 181 2S 235 1199

129 129 288 384

Rabbit

Decreased

7

745

208

Food intake

Rat

Increased

20

1425

114

Tyr-MIF-1

Food intake

Rat

No change

15

243

216

Urotensin VIP VIP VP VP

Food intake Food intake Water intake Alcohol intake Water intake

Rat Rat Rat Rat Rat

6 1 1 4 12

3S 53 383 383 359 285

392 408 408 382 584

VP

Water intake

Rat

Decreased No change No change Decreased Decreased (returned to same as controls) Decreased

1

11

190

VP VP (Lys)

Water intake Alcohol intake

Sheep Rat

Decreased Reversed

9 6

1221 669

417 453

VP (Lys)

Alcohol preference

Rat

Reversed

6

669

453

VP analog DGAVP

Alcohol intake

Rat

Decreased

6

677

102

VP antagonists VP frag. DGAVP

Water intake Alcohol intake

Dog Rat

Decreased Reversed

8 6

1003 669

532 453

VP frag. DGAVP

Alcohol preference

Rat

Reversed

6

669

453

Tyr-D-Ala-Gly-(Me) Phe-Gly-ol Tyr-MIF-1

Neonates; stress-induced feeding Peptide YY-induced hyperphagia ICV admin.

Only in VP-deficient rats Food restricted; VPdeficient Hypothalamic graft of VPproducing cells in VPdeficient rats ICV VP-deficient with enhanced alcohol intake VP-deficient with enhanced alcohol intake In Roman high avoidance and control rats ICV VP-deficient with enhanced alcohol intake VP-deficient with enhanced alcohol intake

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2211

Table 5 Social and sexual behavior Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

A18Fa octa-decapeptide

Defeat behavior

Mouse

Increased

12

235

283

A18Fa, antibody to

Defeat behavior

Mouse

Decreased

12

235

283

ACTH

Sexual behavior

Newt

4

729

361

ACTH ACTH frag. (4–10) ACTH/MSH 4–10 analog ORG 2766 ACTH/MSH 4–10 analog ORG 2766 Amylin

Sexual behavior Sexual behavior Social interaction

Rat Newt Rat

Increased ICV; decreased IP Decreased Increased Increased

ICV; subordinate mice; possible anti-analgesic effect ICV; subordinate mice; possible analgesic effect Opposite effects ICV or IP

14 4 2

379 729 255

8 361 174

Social interaction

Rat

Increased

2

255

174

Sexual behavior

Rat

Decreased

20

379

90

CCK-4

Defensive behavior

Rat

Increased

20

383

575

CGRP

Sexual behavior

Rat

Increased

20

379

90

CRF CRF CRF Dynorphin Endorphin (␤)

Aggressive behavior Defensive behavior Social interaction Lordosis Lordosis

Mouse Mouse Mouse Rat Rat

8 8 8 8 8

935 935 935 309 309

353 353 353 427 427

Enkephalin (Met)

Aggressive behavior

Goldfish

Decreased Increased Decreased No change Dose-dependent increase or decrease Decreased

1

73

474

Enkephalin (Met)

Aggressive behavior

Fish

6

139

86

Enkephalin analog [D-Ala2-Met5]enkephalinamide

Defensive behavior

Cat

9

999

486

F8Fa

Defeat behavior

Mouse

Increased

12

235

283

F8Fa, antibody to

Defeat behavior

Mouse

Decreased

12

235

283

LHRH

Sexual behavior

Human

No change

2

1S 115

163

LHRH antagonist MCH

Sexual behavior Sexual behavior

Rat Rat

Decreased Increased

2 17

393 171

157 207

MIF-1 MIF-1 Morphiceptin

Aggressive behavior Aggressive behavior Lordosis

Mouse Mouse Rat

ICV

6 7 8

165 1007 309

542 279 427

MSH

Lordosis

Rat

ICV or SC

7

581

446

MSH (␣)

Aggressive behavior

Mouse

Decreased Decreased Dose-dependent inhibition or facilitation Increased or decreased Increased

1

69

400

MSH (␣)

Aggressive behavior

Rat

Increased

17

171

207

MSH (␣)

Sexual behavior

Newt

Increased

Aggression seen in mouse paired with MSHtreated animal Admin. to ventromedial nucleus; antagonized by MCH ICV

4

729

361

Increased at low dose, decreased at high dose Increased at low dose, decreased at high dose

ICV In familiar, but not in unfamiliar, surroundings

ICV; effect blocked by CGRP Ultrasound-induced defense behavior ICV; in rats with amylinsuppressed sexual behavior ICV ICV ICV ICV ICV ICV; interaction with melatonin

Admin. to midbrain periaqueductal gray; electrical stimulationelicited defense behavior ICV; subordinate mice; possible anti-analgesic effect ICV; subordinate mice; possible analgesic effect Married men with secondary impotence ICV Admin. to ventromedial nucleus or medial preoptic area

(continued on next page)

2212

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 5 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

MSH (␣)

Sexual behavior

Rat

Increased

Admin. to ventromedial nucleus or medial preoptic area

17

171

207

MSH (␣) MSH (␣) MSH/ACTH 4–10 analog Org2766 OT OT

Social interaction Social interaction Social interaction

Mouse Rat Rat

No change Decreased No change

2 2 13

1S 123 255 541

105 174 235

Human Rat

No change Preserved recognition

13 19

461 999

62 151

OT Sauvagine Sauvagine Sauvagine Somatostatin SP SP

Facial recognition test Social discrimination response Social recognition Aggressive behavior Defensive behavior Social interaction Aggressive behavior Aggressive behavior Aggressive behavior

Rat Mouse Mouse Mouse Fish Fish Mouse

Increased Decreased Increased Decreased Decreased Decreased Decreased

19 8 8 8 6 6 5

999 935 935 935 139 139 86

151 353 353 353 86 86 220

SP frag. (1–7) SP frag. (1–7)

Aggressive behavior Aggressive behavior

Mouse Mouse

Decreased Decreased

4 5

763 86

219 220

SP frag. (4–11)

Aggressive behavior

Mouse

No change

5

86

220

SP frag. analog pyroglutamylSP(7–11) SP frag. analog pyroglutamylSP(7–11) TRH

Aggressive behavior

Mouse

Increased

4

763

219

Aggressive behavior

Mouse

Increased

5

86

220

Dominance

Rat

Increased

9

539

441

TRH

Fighting

Rat

Decreased

9

539

441

TRH TRH analog RGH 2202 Tyr-MIF-1 Vasotocin VP

Sexual behavior RGH 2202 Sexual behavior Aggressive behavior Aggressive behavior Lordosis

Rat Rat

Increased Increased

12 12

1309 1309

152 152

Mouse Rat Hamster

Decreased Decreased Increased

7 5 14

1007 1135 1049

279 61 244

VP VP

Sexual behavior Social discrimination response Social interaction Social recognition Facial recognition test

Newt Rat

Increased Preserved recognition

4 19

97 999

365 151

Mouse Rat Human

No change Increased No change

2 19 13

1S 123 999 461

105 151 62

VP VP VP analog DGAVP

Admin. to central nucleus of amygdala Olfactory bulb admin. Olfactory bulb admin. ICV ICV ICV

Isolation-enhanced aggression Isolation-enhanced aggression; effect enhanced by naloxone Isolation-enhanced aggression

Isolation-enhanced aggression; effect antagonized by naloxone Admin. to nucleus accumbens septi; in dominant, but not subordinate, animals Admin. to nucleus accumbens septi; shockinduced and apomorphine-induced fighting

Pinealectomized animals Medial preoptic area admin. ICV or IP

Olfactory bulb admin.

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2213

Table 6 Learning and memory behaviors Peptide

Paradigm

Phase

Species

ACTH ACTH ACTH

Active avoidance Acquisition and recall Mouse Active avoidance Acquisition and recall Mouse Passive avoidance response Recall Rat

ACTH

Thomson Box visual discrimination Thomson Box visual discrimination Thomson Box visual discrimination Active avoidance

Effect

Notes

Vol Page

Ref

Acquisition

Rat

Improvement Given prenatally 9 Improvement Given postnatally 9 Decreased avoidance 10 latency No improvement 1

Extinction

Rat

No improvement

1

277

472

Reversal

Rat

No improvement

1

277

472

Extinction

Rat

Delayed

ICV

2

389

570

Passive avoidance response Acquisition

Rat

Improvement

ICV

2

389

570

Thomson Box visual discrimination Thomson Box visual discrimination Thomson Box visual discrimination Active avoidance

Acquisition

Rat

No improvement

1

277

472

Extinction

Rat

No improvement

1

277

472

Reversal

Rat

No improvement

1

277

472

Retention

Rat

Improvement

9

575

223

ACTH analog Ebiratide

Passive avoidance behavior Retention

Rat

Improvement

9

575

233

ACTH analog Ebiratide

Passive avoidance behavior Retention

Rat

Improvement

9

575

233

ACTH analog Ebiratide

Radial Maze (8 arm)

Working memory

Rat

Improvement

9

575

233

ACTH analog Ebiratide ACTH analog HOE 427

Retention Acquisition

Rat Rat

Improvement No change

9 10

575 303

233 456

Recall

Rat

No change

10

303

456

Reversal

Rat

Impaired reversal

10

303

456

ACTH analog ORG 2766 ACTH analog ORG 2766

Up-hill avoidance task Two-smell discrimination task Two-smell discrimination task Two-smell discrimination task Active avoidance Active avoidance

Acquisition and recall Mouse Acquisition and recall Mouse

Improvement Improvement

9 9

745 745

239 239

ACTH analog ORG 2766

Active behavior response

Extinction

Rat

Slowed

7

563

172

ACTH analog ORG 2766

Morris water maze

Recall

Rat

Improvement

11

911

432

ACTH analog ORG 2766

Passive avoidance response Recall

Rat

No change

11

911

432

ACTH analog ORG 2766 ACTH analog ORG 2766

Passive behavior response Passive behavior response

Acquisition Acquisition

Rat Rat

No change Improved

7 7

563 563

172 172

ACTH analog ORG 2766 ACTH analog ORG 2766

Passive behavior response Passive behavior response

Retention Retention

Rat Rat

Improved Improved

7 7

563 563

172 172

ACTH analog ORG 2766 ACTH analog ORG 2766 ACTH analog ORG 2766

Acquisition Extinction Acquisition

Rat Rat Rat

Improved No change No change

6 6 10

2S 41 2S 41 303

1 1 456

Recall

Rat

Improvement

10

303

456

ACTH/MSH frag. (4–10)

T-maze T-maze Two-smell discrimination task Two-smell discrimination task Active avoidance

Acquisition and recall Mouse

Improvement

745

239

ACTH/MSH frag. (4–10)

Active avoidance

Acquisition and recall Mouse

No change

745

239

ACTH ACTH ACTH analog ␤-(Tyr9) melanotropin (9–18) ACTH analog ␤-(Tyr9) melanotropin (9–18) ACTH analog D-PheMSH-ACTH ACTH analog D-PheMSH-ACTH ACTH analog D-PheMSH-ACTH ACTH analog Ebiratide

ACTH analog HOE 427 ACTH analog HOE 427

ACTH analog ORG 2766

Socially-deprived animals ECT-induced amnesia Scopolamineinduced amnesia Scopolamineinduced amnesia

Given prenatally Given postnatally; in males only Phase-shiftinduced amnesia Rats with fimbria fornix transection Rats with fimbria fornix transection Phase-shiftinduced amnesia Phase-shiftinduced amnesia 7–21 day old 7–21 day old

Given prenatally; 9 in females only Given postnatally 9

745 745 1117

239 239 425

277

472

(continued on next page)

2214

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 6 (continued) Peptide

Paradigm

ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10)

Benton visual retention test Cardiac orienting to novel stimuli Cardiac orienting to novel stimuli Classical conditioning Classical conditioning Conditioned taste aversion Digit symbol substitution test Discriminative learning

ACTH/MSH frag. (4–10) ACTH/MSH ACTH/MSH ACTH/MSH ACTH/MSH

frag. frag. frag. frag.

(4–10) (4–10) (4–10) (4–10)

ACTH/MSH frag. (4–10)

Phase

Species

Effect

Notes

Vol Page

Ref

Human Rabbit

Improvement Delayed

Elderly

Habituation

1 6

55 2S 97

359 228

Orienting

Rabbit

Enhanced

6

2S 97

228

Acquisition Extinction Retention

Rabbit Rabbit Rat Human

Worsening Faster Augmented version No change

3 3 1 1

715 715 207 55

478 478 501 359

Rat

Improvement

4

11

479

Rat

7

201

360

55 7

359 561

55 277

359 472

Discrimination stimulus Retention

Elderly In one out of ten rats

ACTH/MSH frag. (4–10)

Hunter delayed reaction apparatus

ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10)

Names and Faces test Passive avoidance response Retention

Human Rat

Enhanced at low doses inhibited at high doses No change Improvement

ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10)

Acquisition

Human Rat

No change Improvement

Extinction

Rat

Improvement

1

277

472

Reversal

Rat

No improvement

1

277

472

ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10)

Stroop test Thomson Box visual discrimination Thomson Box visual discrimination Thomson Box visual discrimination T-maze T-maze T-maze

Elderly 1 When admin. 3 prior to retention test, but not if admin. immediately after learning Elderly 1 1

Acquisition Extinction

Rat Rat Rat

7–21 day old 7–21 day old

6 6 10

2S 41 2S 41 1101

1 1 452

ACTH/MSH frag. (4–10) Actinomycin-D Amylin

Wechsler memory scale Passive avoidance Conditioned taste aversion

Elderly

Rat

1 13 13

55 927 961

359 308 79

Amylin Amylin

T-maze T-maze

Retention Retention

Human Rat No change Mouse Mouse

Improved No change Acted as a discrimination stimulus No change Impaired Intra-hypothalamic admin. Improvement Impairment

13 13

577 577

179 179

ANF, antiserum to ANF, antiserum to AT II

Active avoidance Extinction Passive avoidance response Consolidation Active avoidance

Rat Rat Rat

Facilitated Attenuated Improvement

13 13 21

957 957 407

46 46 37

AT II

Inhibitory shock avoidance

Retention

Rat

Impaired

16

1069

309

AT II AT II AT II

Passive avoidance Retention Passive avoidance behavior Passive avoidance behavior

Rat Rat Rat

Impaired Improvement No change

20 9 9

335 475 475

445 58 58

AT II AT II analog losartan

Plus maze Inhibitory shock avoidance

Rat Rat

Impaired Improved

20 16

335 1069

445 309

AT II analog saralasin BBS

Passive avoidance behavior Conditioned taste aversion Acquisition

Rat Rat

Improvement No change

Weak training ICV; strong training ICV ICV Hippocampal CA1 admin.; greater effect in right-side admin. Dentate gyrus admin. ICV ICV ICV with saralasin ICV Dentate gyrus admin.; AT IIinduced memory impairment ICV

9 2

475 61

58 301

ACTH/MSH frag. (4–10) ACTH/MSH frag. (4–10)

Retention

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2215

Table 6 (continued) Peptide

Paradigm

BBS

Species

Effect

Fixed interval responding

Rat

BBS BBS BBS Caerulein Caerulein

Non-reward operant task Reward operant task Taste aversion Active avoidance Morris water maze

Rat Rat Rat Rat Rat

Reduced responses after reinforcement Decreased Decreased No change Delayed Improvement

Caerulein

Morris water maze

Rat

Improvement

Caerulein

Morris water maze

Rat

Improved

Caerulein

Passive avoidance response Recall

Rat

Improved

Caerulein

Passive avoidance response Recall

Rat

Improved

Caerulein

Passive avoidance response Recall

Rat

Caerulein analog des-Gln-Caerulein Caerulein analog des-Gln-Caerulein Caerulein analog Leu-Nle-Caerulein Caerulein analog Leu-Nle-Caerulein Casein (␤) analog D-TyrD-Phe3 CCK analog Boc-CCK-4 CCK analog Boc-CCK-4

Active avoidance response

Rat

Prevented ECSinduced amnesia Delayed

Extinction

Active avoidance response

Rat

Extinction

1435

55

4 4 3 10 13

1 1 61 843 1007

242 242 581 255 256

14

1073

535

12

699

537

11

1263

534

12

699

537

10

843

255

10

843

255

10

843

255

10

843

255

843

255

Amygdalakindled seizures

13

73

27

15 Central nucleus 19 of the amygdala admin.; post-trial injection 16 16

689 27

197 247

815 959

215 264

16 7 7 19 19 10 2 2 2 15

815 809 809 849 969 843 385 385 385 689

215 273 273 376 488 255 171 171 171 197

15

689

197

Rat Rat Rat

Increased Improved

Rat Rat

Rat Rat Rat Rat Human Rat Rat Rat Rat Rat

Impaired Potentiated amphetamine response Impaired No change Worsening No change Impaired recall Delayed Delayed Accelerated No change No effect

Rat

Increased

Extinction Acquisition Extinction Maintenance

12

10

Y-maze brightness discrimination Habituation Uphill avoidance task

Recall Acquisition Retention

Ref

ECS amnesia

Prevented ECSinduced amnesia Improved learning

Passive avoidance response Passive behavior response Passive behavior response Taste aversion conditioning Word recall Active avoidance response Conditioned feeding Conditioned feeding Conditioned feeding Conditioned place preference Habituation

Protein synthesis inhibitor-induced memory impairment Chronic ICV admin.; VIPinduced memory impairment Protein kinase-C inhibitor-induced memory impairment In rats with NMDA antagonistsinduced impairment. Protein kinase-C inhibitor-induced memory impairment ECS amnesia

Vol Page

ECS amnesia

Rat

Retention

Notes

Prevented ECSinduced amnesia Delayed

Passive avoidance response Recall

CCK CCK CCK CCK CCK CCK CCK CCK CCK CCK

CCK frag. CCK-8

Spatial memory

Rat

Active avoidance response Passive reward bar pressing

CCK-4 CCK-4 CCK-4 CCK-4 CCK-4 CCK-8 CCK-8 CCK-8 CCK-8 CCK-8

Extinction

Passive avoidance response Recall

CCK analog JMV-320 CCK analog L-365,260

frag. frag. frag. frag. frag. frag. frag. frag. frag. frag.

Phase

ICV ICV ICV, IV, or IP

(continued on next page)

2216

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 6 (continued) Peptide

Paradigm

CCK frag. CCK-8 CCK frag. CCK-8

Species

Effect

Non-reward operant task Passive avoidance response Recall

Rat Rat

CCK frag. CCK-8 CCK frag. CCK-8

Passive behavior response Passive behavior response

Acquisition Acquisition

Rat Rat

No change Prevented ECSinduced amnesia Improved Improved

CCK frag. CCK-8

Passive behavior response

Acquisition

Rat

Improved

CCK frag. CCK-8

Passive behavior response

Acquisition

Rat

Improved

CCK CCK CCK CCK CCK

Passive behavior response Retention Reward operant task Taste aversion conditioning Taste aversion conditioning Taste aversion conditioning Rat

Rat Rat Rat Rat Induced aversion Rat

Worsening Decreased Induced aversion ICV, IV, or IP Induced conditioning

frag. frag. frag. frag. frag.

CCK-8 CCK-8 CCK-8 CCK-8 CCK-8

Phase

CCK frag. CCK-8

Uphill avoidance task

CCK, antibody to

Discrimination task

CCK-8 CGRP, antiserum to CRF CRF

Free-operant avoidance Active avoidance response Active avoidance response Active avoidance response

CRF CRF

Arousal Conditioned taste aversion

CRF

CRF CRF binding protein

Fixed-interval food presentation Fixed-interval shock presentation Passive avoidance Shock-prod burying response Shock-prod burying test Active avoidance

CRF binding protein

Passive avoidance

Cycloheximide DDAVP Deltorphin

Passive avoidance Complex task execution Passive avoidance response Memory consolidation Fixed-interval food presentation Fixed-interval food presentation shock termination Delayed response in Working memory Wisconsin General Test apparatus Discrimination reversal Reversal Discrimination reversal Reversal task in Wisconsin General Test apparatus

CRF CRF CRF

Dermorphin Dermorphin

DSIP

DSIP DSIP

Retention

Notes

Vol Page

Ref

ECS amnesia

4 10

1 843

242 255

7 7

105 105

274 274

7

105

274

7

105

274

8 4 19 16 17

25 1 849 539 483

143 242 376 166 377

27

247

67

357

67 893 745 745

93 296 239 239

217 345

268 41

1199

384

ICV ICV; ECSinduced amnesia ICV; VPantiserum ECS-induced amnesia and VPantiserum

Central nucleus 19 of the amygdala admin.; post-trial injection Learning and recall Mouse Impairment Posterior 14 cingulate admin. Acquisition Rat Decreased avoidance 4 Extinction Rat Facilitated ICV 15 Acquisition and recall Mouse No change Given prenatally 9 Acquisition and recall Mouse Improvement in Given postnatally 9 females Monkey Increased ICV 4 Rat Induced aversion Third ventricle 20 admin. Monkey Increased responding ICV 10

Extinction

Improved

Monkey No change

ICV

10

1199

384

Rat Rat

Improved Decreased

ICV

13 13

927 1149

308 146

Rat Rat

Delayed Improvement

13 18

1149 711

146 227

Improved performance Rat Impaired Human Increased speed Mouse Increased step-down ICV latencies Monkey Increased responding ICV

18

711

227

13 12 11

927 1 591

308 76 421

10

1199

384

Monkey Decreased responding

10

1199

384

Monkey Worsening

2

1S 131 406

Monkey Worsening Monkey No change

2 2

1S 131 406 1S 131 406

Rat

ICV ICV; aged animals ICV

ICV

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2217

Table 6 (continued) Peptide

Paradigm

Dynorphin frag. (1–13)

Appetitive discrimination

Chicken Inhibited

Dynorphin frag. (1–13)

Avoidance conditioning

Chicken Inhibited

Endorphin (␤)

Act. behavior response

Recall

Rat

Endorphin (␤)

Acquisition

Endorphin (␤)

Fixed-ratio, fixed-interval food presentation Open field habituation

Monkey Decreased responding Rat Improved

Endorphin (␤)

Passive avoidance response Recall

Endorphin (␤)

Passive behavior response

Recall

Endorphin analog D-Ala2F5Phe4-␤-endorphin

Delayed response in Wisconsin General Test apparatus Discrimination reversal task in Wisconsin General Test apparatus Discrimination reversal Conditioned aversion

Working memory

Reversed ECT8 induced amnesia but did not effect controls Rat Decreased avoidance 10 latency Rat Improved Reversed ECT8 induced- amnesia but did not affect controls Monkey Worsening 2

Reversal

Monkey No change

Reversal

Enkephalin analog D-Ala2- Delayed response in F5Phe4-Met-enkephalin Wisconsin General Test apparatus Enkephalin analog D-Ala2- Discrimination reversal F5Phe4-Met-enkephalin task in Wisconsin General Test apparatus Enkephalin analog D-Ala2-Met-enkephalinDelayed response in ethylamide Wisconsin General Test apparatus Enkephalin analog D-Ala2-Met-enkephalinDiscrimination reversal ethylamide task in Wisconsin General Test apparatus Enkephalin analog DPDPE Active avoidance response Enkephalin analog DPDPE Active avoidance response Enkephalin analog D-Phe4- Delayed response in Met-enkephalin Wisconsin General Test apparatus Enkephalin analog D-Phe4- Discrimination reversal Met-enkephalin task in Wisconsin General Test apparatus Enkephalin analog Fixed-ratio, fixed interval Metkephamide food presentation

Working memory

Monkey Worsening Rat Increased preference for conditioned stimulus, regardless of unconditioned stimulus Monkey Worsening

Reversal

Monkey No change

Working memory

Monkey Worsening

Reversal

Monkey No change

Acquisition Retention Working memory

Reversal

Endorphin analog D-Ala2F5Phe4-␤-endorphin Enkephalin (D-Phe4-Met) Enkephalin (Met)

Phase

Species

Effect

Improved

Notes

Vol Page

Intermediate 14 medial hyperstriatum ventrale admin.; chicks Intermediate 14 medial hyperstriatum ventrale admin.; chicks Reversed ECT8 induced amnesia but did not affect controls 10

Ref

1165

95

1165

95

605

394

729

113

605

394

1117

425

605

394

1S 131 406

2

1S 131 406

2 In utero exposure 3

1S 131 406 881 520

2

1S 131 406

2

1S 131 406

2

1S 131 406

2

1S 131 406

Rat Impaired Rat Enhanced Monkey Worsening

13 13 2

885 340 885 340 1S 131 406

Monkey No change

2

1S 131 406

Rat

3

771

Decreased responding

305

(continued on next page)

2218

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 6 (continued) Peptide

Paradigm

Galanin Melanin

Species

Effect

Notes

Vol Page

Ref

Passive avoidance response Morris water maze Spatial memory

Mouse Rat

Decreased latency Improved

ICV In rats whose learning was inhibited by receiving MSG as neonates

16 12

1283 465

556 599

Melanin-concentrating hormone Melanin-concentrating hormone

Passive avoidance

Rat

Facilitated

15

757

343

Rat

Improved

20

1517

364

␤-(Tyr9) melanotropin(9–18) ␤-(Tyr9) melanotropin(9–18) ␤-(Tyr9) melanotropin(9–18) Melatonin

Active avoidance response

Extinction

Rat

Improved

Amygdala and hippocampus admin. ICV

7

11

540

T-maze

Reversal

Rat

Improved

ICV

7

11

540

T-maze

Spatial

Rat

Improved

ICV

7

11

540

Passive avoidance response Acquisition

Rat

Delayed

1

147

119

Melatonin

Passive avoidance response Extinction

Rat

Facilitated

Sham hypophysectomy but not hypophysectomy Sham hypophysectomy but not hypophysectomy

1

147

119

MIF-1

Delayed response in Wisconsin General Test apparatus Discrimination reversal task in Wisconsin General Test apparatus Lashly III maze Morris water maze

Working memory

Monkey Worsening

2

1S 131 406

Reversal

Monkey No change

2

1S 131 406

Learning Spatial memory

Mouse Rat

Improvement No change

11 12

527 465

Retention

Rat Rat

No change No change

2 8

1S 143 120 39 26

Retention

Rat

No change

8

39

26

Acquisition

Rat

Worsening

4

725

32

Reversal

Rat

No change

4

725

32

Extinction

Rat Rat Rat

Delayed No change No improvement

15 2 1

757 343 1S 143 120 277 472

Rat Improved Monkey Improved Rat Decreased errors

2 2 12

333 401 1S 131 406 929 450

MIF-1

MIF-1 MIF-1

MIF-1 MIF-1 analog Cyclo(Leu-Gly) MIF-1 analog Cyclo(Leu-Gly) MSH MSH MSH MSH MSH MSH MSH (␣) MSH (␣)

Phase

Extinction

Passive avoidance response

Passive avoidance response Conditioned avoidance response Conditioned avoidance response Fixed-ratio food presentation Fixed-ratio food presentation Passive avoidance Passive avoidance response Thomson Box visual discrimination Visual discrimination Discrimination reversal Visual discrimination learning

Acquisition

Reversal

Neonates In rats whose learning was inhibited by receiving MSG as neonates

Haloperidoltreated

Trend toward worsening

Medial anterior hypothalamic/ preoptic area admin.; no increase in responding to correct cues

115 599

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2219

Table 6 (continued) Peptide

Paradigm

Phase

MSH (␣)

Classically-conditioned fever response

MSH (␣)

Delayed response in Wisconsin General Test apparatus Discrimination reversal task in Wisconsin General Test apparatus Morris water maze

MSH (␣) MSH (␣)

MSH (␣)

Species

Effect

Notes

Vol Page

Ref

Classical conditioning Rat

11

1127

65

Working memory

Acted as unconditioned stimulus Monkey Improvement

2

1S 131 406

Reversal

Monkey No change

2

1S 131 406

Spatial memory

Rat

Improved

12

465

599

Acquisition

Rat

No change

4

145

222

Reversal

Rat

No change

4

145

222

Acquisition

Rat

Improved

4

145

222

Reversal

Rat

Improved

4

145

222

Acquisition

Rat

Facilitated

Hypophysectomy, 1 but not in controls Hypophysectomy, 1 but not control ECS amnesia 10

147

119

147

119

361

36

10 1

361 277

36 472

1

277

472

4 4 4 4 4 4 4 2

721 721 721 145 145 145 145 101

286 286 286 222 222 222 222 402

In rats whose learning was inhibited by receiving MSG as neonates

MSH (␣)

Operant auditory discrimination Operant auditory discrimination Operant visual discrimination Operant visual discrimination Passive avoidance response

MSH (␣)

Passive avoidance response Extinction

Rat

Delayed

MSH (␣)

Passive avoidance response Recall

Rat

MSH (␣) MSH (␣)

Passive avoidance response Thomson Box visual discrimination Thomson Box visual discrimination Y maze Y maze Y maze Y maze Y maze Y maze Y maze Y maze visual discrimination test Y maze visual discrimination test Y maze visual discrimination test Y maze

Recall Extinction

Rat Rat

Prevented ECSinduced amnesia No change No change

Reversal

Rat

Improvement

Acquisition Extinction Reversal Acquisition Acquisition Reversal Reversal Acquisition

Rat Rat Rat Rat Rat Rat Rat Rat

Improvement No change Improvement Improved No change Improved No change Improvement

Extinction

Rat

No change

2

101

402

Reversal

Rat

Improvement

2

101

402

Acquisition

Rat

No change

ICV

4

721

286

Y maze

Extinction

Rat

No change

ICV

4

721

286

Y maze

Reversal

Rat

Worsening

ICV

4

721

286

Passive avoidance response Recall

Rat

No change

ECS amnesia

10

361

36

Passive avoidance response Recall

Rat

Improved recall

With controls but 10 not ECS amnesia

361

36

MSH (␣) MSH (␣) MSH (␣)

MSH (␣) MSH MSH MSH MSH MSH MSH MSH MSH

(␣) (␣) (␣) (␣) (␣) (␣) (␣) (␣)

MSH (␣) MSH (␣) MSH analog [Nle,D-Phe]␣-MSH MSH analog [Nle,D-Phe]␣-MSH MSH analog [Nle,D-Phe]␣-MSH MSH analog Ac-Cys-GluHis-D-Phe-Arg-Trp-CysNH2 MSH analog Ac-Cys-GluHis-Phe-Arg-Trp-CysNH2

ICV ICV ICV

(continued on next page)

2220

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 6 (continued) Peptide

Paradigm

MSH analog Ac-Nle-AspHis-D-Phe-Arg-Trp-LysNH2 MSH analog Ac-Nle-GluHis-D-Phe-Arg-TrpDab-NH2 MSH analog Ac-Nle-GluHis-D-Phe-Arg-Trp-GlyLys-NH2 MSH analog Ac-Nle-GluHis-D-Phe-Arg-Trp-GlyLys-NH2 MSH analog Ac-Nle-GluHis-D-Phe-Arg-Trp-GlyLys-NH2 MSH analog Ac-Nle-GluHis-D-Phe-Arg-Trp-GlyLys-NH2 MSH analog Ac-Nle-GluHis-D-Phe-Arg-Trp-GlyNH2 MSH analog Ac-Nle-GluHis-D-Phe-Arg-Trp-GlyNH2 MSH analog Ac-Nle-GluHis-D-Phe-Arg-Trp-GlyOH MSH analog H-Cys-GluD-His-Phe-D-Arg-TrpD-Cys-OH MSH analog H-Cys-GluHis-Phe-D-Arg-Phe-DCys-OH MSH analog H-Cys-GluHis-Phe-D-Arg-Phe-DCys-OH MSH analog H-Cys-GluHis-Phe-D-Arg-Phe-DCys-OH MSH analog H-Cys-GluHis-Phe-D-Arg-Trp-CysOH MSH analog H-Cys-GluHis-Phe-D-Lys-Phe-CysOH MSH analog H-Cys-GluHis-Phe-D-Lys-Phe-DCys-OH MSH analog MK-771 MSH (␤) MSH (␤) MSH (␤) MSH (␥) MSH (␥)

Phase

Species

Effect

Notes

Vol Page

Ref

Passive avoidance response Recall

Rat

No change

ECS amnesia

10

361

36

Passive avoidance response Recall

Rat

Prevented ECSinduced amnesia

ECS amnesia

10

361

36

Passive avoidance response Recall

Rat

Prevented ECSinduced amnesia

ECS amnesia

10

361

36

Thomson-Bryant discrimination test

Acquisition

Rat

No change

10

361

36

Thomson-Bryant discrimination test

Retention

Rat

No change

10

361

36

Thomson-Bryant discrimination test

Reversal

Rat

Impaired reversal

10

361

36

Passive avoidance response Recall

Rat

Prevented ECSinduced amnesia

10

361

36

Passive avoidance response Recall

Rat

No change

10

361

36

Passive avoidance response Recall

Rat

Prevented ECSinduced amnesia

ECS amnesia

10

361

36

Passive avoidance response Recall

Rat

Prevented ECSinduced amnesia

ECS amnesia

10

361

36

Thomson-Bryant discrimination test

Acquisition

Rat

No change

10

361

36

Thomson-Bryant discrimination test

Retention

Rat

No change

10

361

36

Thomson-Bryant discrimination test

Reversal

Rat

No change

10

361

36

Passive avoidance response Recall

Rat

No change

ECS amnesia

10

361

36

Passive avoidance response Recall

Rat

No change

ECS amnesia

10

361

36

Passive avoidance response Recall

Rat

No change

ECS amnesia

10

361

36

Fixed-ratio, fixed-interval shock avoidance Thomson Box visual discrimination Thomson Box visual discrimination Thomson Box visual discrimination Y maze visual discrimination test Y maze visual discrimination test

Monkey Increased

ECS amnesia

Acquisition

Rat

No Improvement

Under fixed-ratio 5 schedule 1

783

56

277

472

Extinction

Rat

No improvement

1

277

472

Reversal

Rat

Improvement

1

277

472

Acquisition

Rat

No change

2

101

402

Extinction

Rat

No change

2

101

402

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2221

Table 6 (continued) Peptide

Paradigm

Phase

Species

Effect

MSH (␥)

Reversal

Rat Rat

NPY

Y maze visual discrimination test Progressive-ratio operant schedule T-maze

Retention

Mouse

NPY

T-maze

Retention

Mouse

NPY frag. (20–36)

T-maze

Retention

Mouse

NPY frag. (20–36)

T-maze

Retention

Mouse

NPY frag. (26–36)

T-maze

Retention

Mouse

NT

Rewarded behavior

Rat

OT

Buschke restrictive reminding test Escape behavior

Human

Facial recognition test Memory comparison test One-trail step-through Retention paradigm Passive avoidance response Learning/recall Social discrimination response Social recognition

Human Human Rat

Stroop color-word test Y-maze brightness discrimination Passive avoidance T-maze T-maze

Recall

Human Rat

Retention Retention

Rat Mouse Mouse

Pancreastatin frag. (33–49) T-maze Retention Secretin Novel-object approach Secretin Passive avoidance Somatostatin Passive avoidance response

Mouse Rat Rat Rat

Somatostatin

Passive avoidance response Recall

Rat

Somatostatin (7–10) Somatostatin frag. (3–8) Somatostatin frag. (9–14) SP

Passive avoidance response Recall Passive avoidance response Recall Passive avoidance response Recall Morris water maze

Rat Rat Rat Rat

SP

Tunnel maze

Short and long term memory

Rat

SP SP analog [pGlu6]SP(6–11) SP frag. (1–7) TRH

Up-hill avoidance learning Up-hill avoidance learning

Retention Retention

Up-hill avoidance learning Active avoidance response

Retention

NPY

OT

OT OT OT OT OT OT OT OT PACAP Pancreastatin Pancreastatin

Vol Page

Ref

Worsening

2

101

402

Increased responding Perifornical region admin. Improvement ICV; weak training Impairment ICV; strong training Improvement ICV; weak training Impairment ICV; strong training No change ICV; weak training Decreased ICV responding Reduced initial storage Increased With central, but not peripheral, admin. No change No change No change

19

1667

60

10

963

177

10

963

177

10

963

177

10

963

177

10

963

177

16

1417

457

13

461

62

2

1

350

13 13 15

461 461 229

62 62 52

927 999

529 151

999

151

461 717

62 84

1067 1077 1077

536 180 180

1077 739 1067 293

180 83 536 568

1153

569

1153 1153 1153 275

569 569 569 504

85

385

Rat Rat

Prenatal exposure 11 Olfactory bulb 19 admin. Olfactory bulb 19 admin. No change 13 No change Newborns and 9 adults No change 14 Improvement 9 Improvement Scopolamine9 induced amnesia Improvement 9 Increased ICV 4 No change 14 Blocked ECTICV; ECT4 induced amnesia induced amnesia Decreased avoidance ICV 10 latency No change ICV 10 No change ICV 10 No change ICV 10 Improved Rats with lesions 17 performance of the hippocampus with or without fetal grafts Facilitated With pretrial, but 14 not post-trial, admin. Improvement 11 No change 11

163 163

224 224

Rat Rat

Improvement Improved

163 1309

224 152

Rat

Rat Rat Rat

Notes

No change Preserved recognition Increased

Rats with hypoxic amnesia

11 12

(continued on next page)

2222

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 6 (continued) Peptide

Paradigm

TRH

Active avoidance response

TRH

TRH analog MK-771

Fixed-ratio, fixed-interval food presentation Fixed-ratio, fixed-interval food presentation Fixed-ratio, fixed-interval food presentation Fixed-ratio, fixed-interval shock avoidance Passive avoidance response Radial arm maze Fixed-ratio, fixed-interval food presentation Fixed-ratio, fixed-interval food presentation Fixed-ratio, fixed-interval food presentation Radial maze (12-arm)

TRH analog RGH 2202

Active avoidance response

Recall

TRH analog RGH 2202

Active avoidance response

Recall

TRH analog RGH 2202 TRH analog RGH 2202 TSH

Passive avoidance response Recall Radial arm maze Spatial memory Fixed-interval food reward with fixed-ratio shock Fixed-interval food reward with fixed-ratio shock

TRH TRH TRH TRH TRH TRH analog MK-771 TRH analog MK-771 TRH analog MK-771

TSH

Tuftsin

Phase

Species

Effect

Rat

Monkey Recall Spatial memory

Working memory

Reversed age-related Aged animals impairment Monkey Decreased responding Pigeon Decreased responding Rabbit Decreased responding Increased Under fixed-ratio schedule Rat Improvement Rat Decreased errors Monkey Decreased responding Pigeon Decreased responding Rabbit Decreased responding Rat Improvement In medal septal lesioned but not controls Rat Reversed hypoxiaRats with induced amnesia hypoxic amnesia Rat Reversed age-related Aged animals impairment Rat Improvement Rat Decreased errors Pigeon Decreased When admin. alone Pigeon Increased When admin. with pentobarbital, chlordiazepoxide, or alcohol Monkey Increased responding ICV

Urocortin

Fixed-interval food presentation Fixed-interval shock presentation Conditioned taste aversion

Vasotocin

Passive avoidance behavior Retention

Chicken Increased

Vasotocin

Acquisition

Rat

No change

Reversal

Rat

Improvement

VIP

Thompson-Bryant discrimination box Thompson-Bryant discrimination box Morris water maze

Rat

Impairment

VIP VIP VIP

Passive avoidance Passive avoidance T-maze

Rat Rat Mouse

Impairment No change Impairment

VP VP

Active behavior response Cognition

Rat Human

Slowed Improved

Tuftsin

Vasotocin

Notes

Monkey Decreased responding Rat Induced aversion

Retention

Extinction Activation, alertness, and fatigue

ICV

Vol Page

Ref

12

1309

152

4

177

23

4

177

23

4

177

23

5

783

56

12 12 4

1309 1309 177

152 152 23

4

177

23

4

177

23

10

121

240

12

1309

152

12

1309

152

12 12 5

1309 1309 809

152 152 591

5

809

591

10

1199

384

10

1199

384

345

41

1221

122

383

35

6

383

35

14

1073

535

14 14 11

1067 1067 933

536 536 176

7 12

213 1385

290 429

Third ventricle 20 admin. ICV or IP; 2 day 5 old chicks 6

Chronic ICV admin. Central admin. Peripheral admin. ICV; effect antagonized by arecoline, naloxone and ST 587, but not CCK or NPY ICV

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2223

Table 6 (continued) Peptide

Paradigm

Phase

Species

Effect

Notes

Vol Page

Ref

VP

Conditioned aversion response

Acquisition

Rat

ICV

7

213

290

VP

Escape behavior

Rat

Did not act as unconditioned stimulus Increased

2

1

350

VP

Habituation

Mouse

Increased

With central, but not peripheral, admin. Transgenic admin.

16

1329

362

VP VP

Recall Recall

Human Human

Enhanced free recall No change

12 12

1379 1379

391 391

Retention

Rat

Impairment

15

229

52

Human

No change

12

1393

20

VP

Incidental memory task Oddball paradigm word recall One-trail step-through paradigm Orienting response and stimulus mismatch Passive avoidance

Mouse

No change

1329

362

VP VP

Passive avoidance behavior Recall Passive avoidance response Learning/recall

Rat Rat

493 927

550 529

VP VP VP

Passive avoidance response Retention Passive behavior response Acquisition Passive behavior response Acquisition

Rat Rat Rat

Impairment Increased step-down latency (improvement) in females Improvement No change Improved

Transgenic 16 admin. Given prenatally 8 Prenatal exposure 11

11 7 7

633 105 105

317 274 274

VP VP

Radial maze (12 arm) Social discrimination response Social recognition

Working

Rat Rat

1 19

261 999

66 151

19

999

151

Thompson-Bryant discrimination box Thompson-Bryant discrimination box Thompson-Bryant discrimination test Thompson-Bryant discrimination test Thompson-Bryant discrimination test Thomson-Bryant discrimination test Thomson-Bryant discrimination test Conditioned avoidance for smoking cessation Conditioned avoidance for smoking cessation Emotionally-influenced free recall Impaired free recall performance Radial maze (24-arm)

VP VP

VP VP VP VP VP VP VP VP VP (Lys) VP (Lys) VP (Lys) VP (Lys) VP analog 8-D-arginineVP VP analog 8-L-argininedeamino-VP VP analog DAVP VP analog DDAVP

Neonatal exposure

ICV ICV; ECSinduced amnesia

Rat

No change Preserved recognition Increased

Acquisition

Rat

No change

6

383

35

Reversal

Rat

Improvement

6

383

35

Acquisition

Rat

No change

Given prenatally

8

493

550

Reversal

Rat

No change

Given prenatally

8

493

550

Reversal recall

Rat

Impairment

Given prenatally

8

493

550

Acquisition

Mouse

No change

10

237

549

Reversal

Mouse

Improvement

237

549

Acquisition

Human

Improvement

In albino, but not 10 hooded, rats 3

527

164

Extinction

Human

Accelerated

3

527

164

Human

No change

Twins

6

297

170

Human

No change

Twins

6

297

170

Working memory

Rat

No change

3

725

67

Radial maze (24-arm)

Working memory

Rat

No change

3

725

67

Radial maze (12-arm) Active avoidance

Working Acquisition

Rat Rat

No change Enhanced at low dose and decreased at high dose

1 12

261 471

66 493

Olfactory bulb admin. Olfactory bulb admin.

(continued on next page)

2224

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 6 (continued) Peptide

Paradigm

Phase

Species

Effect

Notes

Vol Page

Ref

VP analog DDAVP

Active avoidance

Extinction

Rat

Inhibition

Dose-dependent effect

12

471

493

VP VP VP VP

Active avoidance test Active avoidance test Benton visual retention test Color and shape discrimination Delayed word list recall Immediate recall of sentences Immediate word list recall Implicational sentence recall

Acquisition Extinction

Rat Rat Human Human

Improved Delayed No change Improvement

6 6 3 3

23 23 627 627

221 221 29 29

Recall

Human Human

No change Improved

11 6

1313 397

31 548

Recall Recall

Human Human

11 11

1313 473

31 33

11 11 7 7

1313 633 563 563

31 317 172 172

7 7

563 563

172 172

16 1 5

1327 261 819

30 66 34

4

707

28

analog analog analog analog

DDAVP DDAVP DDAVP DDAVP

VP analog DDAVP VP analog DDAVP VP analog DDAVP VP analog DDAVP

Males Males

Paper folding test Passive avoidance response Retention Passive behavior response Acquisition Passive behavior response Acquisition

Human Rat Rat Rat

Impaired Dose-dependent impairment or facilitation No change Improvement No change Improved

VP analog DDAVP VP analog DDAVP

Passive behavior response Passive behavior response

Acquisition Acquisition

Rat Rat

Improved Improved

VP analog DDAVP VP analog DDAVP VP analog DDAVP

Phrase recall Radial maze (12-arm) Sentence comprehension and recall

Working

Human Rat Human

No change Worsening Improvement

VP analog DDAVP

Human

Improved attention

Acquisition

Human Rat

No change Improvement

11 3

1313 521

31 100

Extinction

Rat

No change

3

521

100

Reversal

Rat

Impairment

3

521

100

VP analog DDAVP

Sternberg item recognition task Stroop color word test Thomson Box visual discrimination Thomson Box visual discrimination Thomson Box visual discrimination Word list recall

Human

9

1361

430

VP analog DDAVP

Word recall

Human

Improved recent recall, worsened distant recall Improved

16

179

63

VP analog DDAVP

Y-maze brightness discrimination Y-maze brightness discrimination Classical conditioning

Acquisition

Rat

Improvement

9

717

84

Recall

Rat

Improvement

9

717

84

Acquisition

Rabbit

No change

4

37

229

VP analog Deaminodicarba-arginine-8-VP

Classical conditioning

Acquisition

Rabbit

No change

4

37

229

VP analog Deaminodicarba-arginine-8-VP

Classical conditioning

Extinction

Rabbit

Accelerated

4

37

229

VP analog Deaminodicarba-arginine-8-VP

Classical conditioning

Extinction

Rabbit

No change

4

37

229

VP VP VP VP

analog analog analog analog

DDAVP DDAVP DDAVP DDAVP

VP analog DDAVP VP analog DDAVP VP analog DDAVP VP analog DDAVP

VP analog DDAVP VP analog Deaminodicarba-arginine-8-VP

Phase-shiftinduced amnesia Phase-shiftinduced amnesia

Effect seen in males but not females Males

In men but not women Newborns but not adults Newborns and adults Classicallyconditioned bradycardia Classicallyconditioned nictitating membrane response Classicallyconditioned bradycardia Classicallyconditioned nictitating membrane response

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2225

Table 6 (continued) Peptide

Paradigm

Phase

Species

Effect

VP analog desGlyNH2DDAVP VP analog desGly-NH2VP VP analog DGAVP VP analog DGAVP

Radial maze (24-arm)

Working memory

Rat

Radial maze (12-arm)

Working

Active behavior response Active behavior response

Extinction Extinction

VP analog DGAVP

Buschke restrictive reminding test

VP analog DGAVP

Cardiac orienting to novel stimuli Cardiac orienting to novel stimuli Facial recognition test Memory comparison test

VP analog DGAVP VP analog DGAVP VP analog DGAVP

Notes

Vol Page

Ref

Improvement

3

725

67

Rat

No change

1

261

66

Rat Rat

Slowed Slowed

7 7

563 563

172 172

Human

13

461

62

6

2S 97

228

Phase-shiftinduced amnesia

Habituation

Rabbit

Increased word recall and delayed recognition Delayed

Orienting

Rabbit

Enhanced

6

2S 97

228

Human Human

13 13

461 461

62 62

13

461

62

7 11 11

213 633 633

290 317 317

Stroop color-word test

Human

No change Diminished reaction time No change

Active behavior response Extinction Passive avoidance response Retention Passive avoidance response Retention

Rat Rat Rat

Faster Improvement Improvement

Thompson-Bryant Acquisition discrimination box Thompson-Bryant Reversal discrimination box Passive avoidance response Retention

Rat

No change

6

383

35

Rat

No change

6

383

35

Rat

Improvement

11

633

317

Passive avoidance response Retention

Rat

Improvement

11

633

317

Passive avoidance response Retention Passive avoidance behavior Retention

Rat No change Chicken Enhanced avoidance

11 4

633 401

317 123

Passive avoidance response Post-learning application

Rat

No change

6

2S 177 566

VP, antibody to

Passive avoidance response Retention

Rat

Impairment

6

2S 177 566

VP, antibody to VP, antibody to

Passive avoidance response Retention Passive avoidance response Retention

Rat Mouse

Impairment Retention deficit

6 4

2S 177 566 265 306

VP analog DGAVP VP analog dPTyr(me) ArgVP VP analog D-ZNC(C)PR VP analog D-ZNC (C-OMe)PR VP analog Pressinoic acid VP analog Pressinoic acid VP analog ZNC(C)PR (VP 4–8) VP analog ZNC(COMe)PR VP analog ZNCPR dimer VP frag. L-prolyl-Larginyl-glycinamide VP, antibody to

ICV; VP treated

ICV but not IP; 2 day old chicks Dorsal septum admin. after learning Hippocampal admin. ICV ICV

2226

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 7 Stereotyped and other behaviors sorted by peptide Peptide

Behavior

Species

Effect

ACTH ACTH ACTH ACTH

Distress vocalization Grooming Grooming Grooming

Chicken Rat Rat Rat

Increased Increased Increased Increased

ACTH ACTH

Grooming Grooming

Rat Rat

Increased Increased

ACTH

Grooming

Rat

Increased

ACTH

Grooming

Rat and mouse

Increased

ACTH

Mouse

No change

ACTH ACTH

Myoclonus (serotonergic behavior) Vomiting Yawning

Dog Rat

No change Increased

ACTH frag. (1–24) ACTH frag. (1–24)

Anxiety behaviors Grooming

Chicken Rat

Increased Increased

ACTH frag. (1–4)

Grooming

Rat

Enhanced

ACTH frag. (4–10) ACTH frag. (4–10) ACTH/MSH 4–10 analog ORG 2766 ACTH/MSH frag. analogs, C-frag. elongated or cyclized Adrenal Peptide E (Frog)

Anxiety behaviors Distress vocalization Rotation

Chicken Chicken Rat

Increased Increased Decreased

Grooming

Rat

Increased

Mouse

No change

Rat Dog Rat

BBS BBS BBS

Morphine-induced behaviors Grooming Vomiting Amphetamine-induced stereotypy Apomorphine-induced stereotypy Bite/scratch behavior Grooming Grooming

Vol

Page

Ref

11 7 4 5

915 597 907 713

414 476 202 546

6 7

369 651

562 160

16

1263

434

8

841

159

10

5

439

6 16

1S 173 1263

597 434

11 4

915 833

414 6

7

1

134

11 11 14

915 915 1317

414 414 10

5

1197

232

ICV

17

1291

97

No change No change Increased

ICV ICV ICV

17 6 9

589 1S 173 475

91 597 58

Rat

Increased

ICV

9

475

58

Mouse Rat Rat

Increased Increased Increased

7 2 8

835 2S 179 237

47 198 303

Grooming Grooming Grooming

Rat Rat Rat

Increased Increased Increased

12 13 4

761 1215 693

182 99 355

BBS

Grooming

Rat

Increased

7

557

352

BBS

Grooming

Rat

Increased

9

1S 245

260

BBS

Grooming

Rat

Increased

9

1S 245

260

BBS

Grooming

Rat

Increased

Intraspinal admin. ICV With admin. to multiple brain areas ICV ICV; developed over 8 days ICV; effect antagonized by neuroleptics ICV; antagonized by morphine With admin. to nucleus tractus solitarius but not nucleus accumbens With admin. to nucleus tractus solitarius but not nucleus accumbens With ICV but not IV admin.; no antagonism by haloperidol, morphine, naloxone, or NT. No effect of hypophysectomy or adrenalectomy

BBS BBS BBS

4

907

202

Amylin AT AT II AT II

Notes ICV; blocked by naloxone ICV Pre-optic, anterior hypothalamic admin. ICV ICV; area of action localized to anterior-ventral third ventricle ICV; not antagonized by nitric oxide synthase inhibitor ICV; greater effect in rats than mice 5-hydroxytryptophaninduced ICV ICV; antagonized by nitric oxide synthase inhibitor ICV; effect antagonized by naloxone In MSH-induced grooming; no effect alone

Nigrostriatal lesions and amphetamine-induced turning More potent than unmodified frag.

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2227

Table 7 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

BBS

Grooming

Rat

Increased

6

369

562

BBS

Grooming

Rat

Increased

6

1179

564

BBS

Grooming

Rat

Increased

6

1179

563

BBS BBS BBS BBS BBS

Grooming and scratching Licking Licking Respiration Righting

Rat Rat Rat Rat Rat

Increased Decreased Decreased Increased Impaired

ICV; different doses induce different types of grooming Effect enhanced by haloperidol, antagonized by naloxone and NT ICV; antagonized by haloperidol Neonates

10 17 16 4 2

529 107 903 277 1S 99

259 175 523 395 187

BBS

Scratching

Mouse

Increased

9

909

567

BBS

Scratching

Rat

Increased

6

1179

563

BBS BBS Bradykinin Calcitonin Calcitonin

Sighing Vomiting Vomiting Respiration Writhing

Rat Dog Dog Rat Mouse

Increased No change No change Increased Increased analgesia

4 6 6 4 6

277 1S 173 1S 173 277 3S 277

395 597 597 395 200

Casomorphin analog BCH 325 Casomorphin analog BCH 325

Jerking

Rat

Decreased

16

635

447

Yawning

Rat

Normalized

16

635

447

Casomorphin analogs

Yawning

Rat

Decreased

13

69

464

Casomorphin frag. (1–5) CCK CCK CCK

Distress vocalization Anxiety behavior Respiration Stretching

Chicken Rat Cat Mouse

Decreased Increased Increased tidal volume Decreased

5 16 9 10

829 1313 809 31

415 263 246 9

CCK analog Boc-CCK-4

Anxiety behavior

Rat

No change

19

27

247

CCK frag. CCK-8

Anxiety behavior

Rat

No change

19

27

247

CCK-4 CCK-4 CCK-8

Circling Defecation Catalepsy

Rat Rat Rat

No change No change Blocked

7 6 6

809 91 237

367 275 253

CCK-8 CCK-8 CCK-8

Circling Defecation Rotation

Rat Rat Rat

Increased No change Increased

7 6 18

809 91 1161

367 275 396

CCK-8 CCK-8, desulfated Ceruletide

Rumination Circling Catalepsy

Sheep Rat Rat

No change No change Decreased

5 7 10

81 809 779

238 367 250

Ceruletide analogs Ceruletide analogs

Catalepsy Convulsions

Mouse Mouse

Increased Decreased

3 3

701 701

610 610

ICV ICV; alcohol-induced righting impairment Intrathecal admin.; not antagonized by D-Pro2,DTrp7,9-SP and phenoxybenzamine ICV; antagonized by naloxone ICV ICV ICV ICV ICV, IP, and IV, but no effect SC; Ach-induced writhing Bromocriptine-induced jerks Bromocriptine-evoked yawning that was inhibited by reserpine ICV; apomorphine-induced yawning ICV; chicks Ventral medulla admin. ICV; abdominal irritantinduced stretching Central nucleus of the amygdala admin. Central nucleus of the amygdala admin. ICV Nucleus accumbens admin. ICV; endorphin-induced catalepsy; effect blocked by frontal cortex lesion ICV Nucleus accumbens admin. Animals pre-treated with peptide prior to nigrostriatal lesions; dopaminedepletion-induced turning ICV Haloperidol-induced catalepsy Hexobarbital-induced sleep Harman-induced convulsions

(continued on next page)

2228

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 7 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

Ceruletide analogs

Gnawing

Mouse

Increased

Methylphen-induced gnawing

2

2S 65

609

Ceruletide analogs CGRP

Ptosis Grooming

Mouse Rat

Increased Increased

2 17

2S 65 1183

609 294

CGRP CRF

Grooming Boxing behavior

Rat Rat

Decreased Decreased

5 6

861 891

297 107

CRF CRF CRF

Grooming Grooming Grooming

Rat Rat Rat

Increased Increased Increased

13 6 20

1149 3S 53 509

146 392 571

CRF

Grooming

Rat and mouse

Increased

8

841

159

CRF CRF antagonist ␣-helical CRF Cyclo (Leu-Gly)

Huddling and lying down Freezing behavior

Monkey Rat

Increased Decreased

4 15

217 1303

268 237

Rat

Decreased

8

39

26

Cyclo (Leu-Gly)

Apomorphine-induced stereotypy Rotation

Rat

No change

8

39

26

Dermorphin

Catalepsy

Rat

Increased

6

3S 165

59

Dermorphin

Catalepsy

Rat

Decreased

6

3S 165

59

Dynorphin analog desTyr1-dynorphin (1–13) Dynorphin frag (1–13) Dynorphin frag. (1–13)

Grooming

Rat

Increased

4

833

6

Barrel rolling Grooming

Rat Rat

Increased Increased

8 4

1089 833

201 6

Dynorphin frag. (1–13)

Grooming

Rat and mouse

Increased

1

341

578

Dynorphin Dynorphin Dynorphin Dynorphin Dynorphin

Hind limb paralysis Shaking Circling Circling Circling

Rat Rat Rat Rat Rat

Increased Increased Increased Increased Increased

4 8 8 8 8

631 1089 837 837 837

168 201 186 186 186

Dynorphin frag. (2–17) Endorphin (␣)

Circling Distress vocalization

Rat Chicken

Increased Decreased

8 5

837 823

186 573

Endorphin (␤)

Catalepsy

Rat

Increased

6

237

253

Endorphin (␤)

Distress vocalization

Chicken

Decreased

5

823

573

Endorphin (␤)

Righting

Rat

Impaired

2

1S 99

187

Endorphin (␤) Endorphin (␤)

Startle Trembling

Rat Rat

Decreased Decreased

2 2

1S 137 1S 99

234 187

Endorphin (␥)

Amphetamine-induced stereotypy

Rat

Decreased

2

9

285

Endorphin (␣)

Distress vocalization

Chicken

Decreased

5

823

573

Enkephalin

Vocalization

Sheep

Decreased

9

1221

417

frag. frag. frag. frag. frag.

(1–13) (1–13) (1–6) (1–7) (1–8)

Antagonized by nitric oxide synthase inhibitor ICV Medial frontal cortex admin.; carbachol-induced boxing behavior ICV ICV but not SC ICV; not antagonized by melanocortin-4 receptor antagonist ICV; greater effect in rats than mice; not antagonized by dexamethasone ICV Foot-shock-induced behavior Rats treated chronically with haloperidol Apomorphine-induced rotation in rats with unilateral nigrostriatal lesions ICV; effects increased by caudate lesion ICV; in dermorphin-tolerant but not morphine-tolerant rats ICV; effect antagonized by naloxone ICV or IV ICV; effect antagonized by naloxone ICV; not reversible by naloxone Intrathecal admin. ICV or IV Substantia nigra admin. Substantia nigra admin. Substantia nigra admin.; not antagonized by naloxone Substantia nigra admin. With ICV, but not IP, admin. ICV; effects enhanced by frontal cortex ablation With ICV, but not IP, admin.; chicks ICV; alcohol-induced righting impairment ICV; alcohol-induced tremors Effect antagonized by 2bromo-ergocryptine and naloxone With ICV, but not IP, admin. ICV

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2229

Table 7 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

Enkephalin (Leu) Enkephalin (Met) Enkephalin analog DADLE

Circling Shaking Respiration

Rat Fish Rat

Increased Increased Increased

Substantia nigra admin.

8 6 3

837 139 1031

186 86 225

Enkephalin analog DADLE Enkephalin analog DAGO

Respiration Respiration

Rat Rat

3 3

1023 1031

236 225

Enkephalin analog DAMA Enkephalin analog FK33– 824 Galanin Galanin

Shaking Respiration

Rat Mouse

Increased Increased at low dose decreased at high dose Increased Decreased rate

4 9

239 777

155 378

Anxiety behavior Freezing behavior

Mouse Rat

No change No change

16 15

1283 1303

556 237

Galanin

Grooming

Rat

No change

11

1001

304

Galanin

Rat

No change

15

1303

237

Gastrin (1–17) Gastrin-releasing peptide Gastrin-releasing peptide

Opiate withdrawal behavior Rumination Bite/scratch behavior Licking

Sheep Mouse Rat

Increased Increased Decreased

5 7 17

81 835 107

238 47 175

Gastrin-releasing peptide Kassinin L-pyroglutamyl-L-leucine

Licking Bite/scratch behavior Jumping

Rat Mouse Rat

Decreased Increased Delayed

16 7 4

903 835 417

523 47 295

MCH

Anxiety behavior

Rat

Decreased

17

171

207

Melatonin MIF-1

Startle response Catalepsy

Rat Mouse

Decreased Prevented tolerance

2 8

1S 155 1051

118 380

MIF-1

Catalepsy

Rat

Decreased

2

105

85

MIF-1

Circling

Rat

No change

2

189

148

MIF-1 MIF-1

Defecation Head turning

Rat Rat

Decreased No change

2 2

1S 143 189

120 148

MIF-1 MIF-1

Head twitch Oral act. (serotonergic behavior)

Mouse Rat

No change No change

2 14

189 1159

148 206

MIF-1 MIF-1 analog 3(R)-[(2(S)pyrrolidinylcarbonyl) amino]-2-oxo-1pyrrolidineacetamide MIF-1 analog Cyclo(Leu-Gly) MIF-1 analog parepide

Depressive behaviors Rotation

Human Rat

Decreased Increased

4 18

297 1209

559 363

Sniffing

Rat

Increased

5

7

310

Catalepsy

Rat

Increased

5

883

381

MIF-1 analog YPLG

Catalepsy

Mouse

No change

8

1051

380

MSH

Defecation

Rat

Increased

1

147

119

MSH MSH MSH

Defecation Grooming Vocalization

Rat Rat Chicken

Increased Increased Decreased

2 2 11

1S 143 333 647

120 401 413

MSH (␣)

Anxiety behavior

Rat

Increased

17

171

207

Nucleus tractus solitarius admin. Third ventricle admin. Nucleus tractus solitarius admin. ICV

ICV Foot-shock-induced behavior Paraventricular nucleus admin.

ICV Intraspinal admin. Admin. simultaneously with neuromedin B-10 Intraspinal admin. Morphine-withdrawalinduced jumping Admin. to medial preoptic area Haloperidol-induced catalepsy Haloperidol-induced catalepsy ICV; dopamine- or 5HTstimulated circling Novelty-induced defecation Striatally-evoked head turning 5HT-stimulated twitch 6-hydroxydopaminelesioned rats treated with desipramine Apomorphine- or L-DOPAinduced rotation in 6hydroxydopamine-lesioned rats Apomorphine-induced sniffing Haloperidol-induced catalepsy Haloperidol-induced catalepsy Passive-avoidance-induced defecation Novelty-induced defecation ICV Separation-induced vocalization in chicks Admin. to medial preoptic area

(continued on next page)

2230

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 7 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

MSH (␣) MSH (␣) MSH (␣)

Grooming Grooming Grooming

Rat Rat Rat

Increased Increased Increased

2 4 16

101 721 821

402 286 110

MSH (␣)

Grooming

Rat

Increased

18

393

470

MSH (␣)

Grooming

Rat

Increased

7

1

134

MSH (␣)

Grooming

Rat

Increased

Not antagonized by ␥-MSH ICV ICV; antagonized by diazepam or baclofen ICV; antagonized by melanin-concentrating hormone Enhanced by ACTH frag. (1–4) Ventral tegmental area admin.; effect enhanced by bicuculline, blocked by atropine

12

203

127

MSH (␥) MSH analog [Nle4, DPhe7]-␣ MSH MSH analogs MSH antagonist [D-Trp7, Ala8, D-Phe10) ␣-MSH(6–11)amide Neuromedin B Neuromedin B-10

Grooming Grooming

Rat Rat

No change Increased

2 4

101 721

402 286

Grooming Walking pattern

Rat Rat

Increased Increased recovery

6 16

1185 319

505 433

Bite/scratch behavior Licking

Mouse Rat

Increased Decreased

7 17

835 107

47 175

NP-E-I NPY NPY

Grooming Anxiety behavior Anxiety behaviors

Rat Rat Mouse

18 14 19

393 909 359

470 428 387

NPY NPY NPY antibody

Catalepsy Grasping Barrel rolling

Rat Rat Mouse

Increased Decreased Decreased at low dose, increased at high dose Increased Increased Increased

15 15 15

799 799 607

54 54 579

NPY antibody

Circling

Mouse

Increased

15

607

579

NPY frag. (1–30) NPY frag. (1–30) NT NT NT NT

Catalepsy Grasping Grooming Respiration Respiration Righting

Rat Rat Rat Monkey Rat Rat

No effect No effect No change Decreased No change Impaired

15 15 4 5 4 2

799 799 493 125 277 1S 99

54 54 511 366 395 187

NT NT NT

Rotation Vomiting Yawning

Rat Dog Rat

Increased Increased Decreased

6 6 12

1057 1S 173 755

389 597 398

NT analog [D-Trp11]NT

Yawning

Rat

Decreased

12

755

398

OT OT OT

Barrel rolling Grooming Grooming

Rat Rat Rat

Increased Increased Increased

6 12 9

747 113 1S 223

492 405 522

OT OT

Grooming Grooming and scratching

Rat Rat

Increased

18 2

1389 1

153 350

ICV

Admin. after sciatic nerve crush Intraspinal admin. Admin. simultaneously with gastrin-releasing peptide ICV; antagonized by MSH ICV ICV; anxiolytic effect via Y1 receptors and anxiogenic via Y2 receptors ICV ICV With admin. to ventrolateral thalamus but not other brain areas With admin. to ventromedial thalamus but not other brain areas ICV ICV PVN and IV admin. ICV ICV ICV; alcohol-induced righting impairment Substantia nigra admin. ICV ICV; apomorphine-induced yawning ICV; apomorphine-induced yawning ICV ICV Ventral tegmental area admin.; effect not altered by sex, sex-steroids or dopamine antagonists ICV With central, but not peripheral, admin.; in nonstressful, but not stressful, conditions

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2231

Table 7 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

OT

Human

Decreased

In a single patient

13

1083

139

Rat Rat Dog Rat Rat Mouse Rat

Increased Increased Increased Increased No change Increased Increased

Intrathecal admin. ICV ICV ICV Intraspinal admin. ICV

6 6 6 10 20 7 9

567 1191 1S 173 559 1445 835 475

284 538 597 11 14 47 58

Rat

Increased

ICV

9

475

58

Sauvagine

Obsessive compulsive behavior Startle response Tail movement Vomiting Yawning Anxiety behavior Bite/scratch behavior Amphetamine-induced stereotypy Apomorphine-induced stereotypy Grooming

Rat

Increased

6

3S 53

392

Sauvagine Secretin Secretin Secretin Somatostatin Somatostatin

Grooming Defecation Gnawing Grooming Barrel rolling Scratching

Rat Rat Rat Rat Rat Mouse

Decreased Increased No change No change Increased Increased

6 4 4 4 10 9

3S 53 739 739 739 1153 909

392 83 83 83 569 567

Somatostatin frag. (3–8), (9–14), or (7–10) SP SP SP

Barrel rolling

Rat

No change

ICV but not SC; in fasted, but not satiated animals SC but not ICV ICV ICV ICV ICV Intrathecal admin.; not antagonized by D-Pro2,DTrp7,9-SP and phenoxybenzamine ICV

10

1153

569

Bite/scratch behavior Biting Boxing behavior

Mouse Mouse Rat

Increased Increased Increased

Intraspinal admin. Spinal subarachnoid admin. Medial frontal cortex admin.; carbachol-induced boxing behavior

7 20 6

835 301 891

47 469 107

SP SP

Chafing movements Grooming

Fish Mouse

Increased Increased

6 6

139 363

86 217

SP SP

Grooming Grooming

Rat Rat

Increased Increased

1 7

103 557

262 352

SP SP SP SP

Licking Respiration Rigidity Risk assessment behavior

Mouse Rat Rat Rat

Increased No change Reversed Increased

20 4 1 20

301 277 103 1437

469 395 262 126

SP

Rotation

Rat

Normalized

18

1161

396

SP SP

Scratching Scratching

Mouse Mouse

Increased Increased

4 6

517 363

249 217

SP

Scratching

Mouse

Increased

9

909

567

SP SP SP SP antagonist [D-Pro2, D-Phe7, D-Trp9]-SP

Scratching Scratching and licking Vomiting Boxing behavior

Mouse Rat Dog Rat

Increased Increased No change Decreased

20 3 6 9

301 49 1S 173 1S 117

469 485 597 521

OT OT OT OT Pancreatic polypeptide Ranatensin Saralasin Saralasin

ICV; different effectiveness in different strains and ages; enhanced by naloxone but not phenoxybenzamine or haloperidol ICV ICV; not antagonized by morphine Spinal subarachnoid admin. ICV ICV; in haloperidol treated Dorsal periaqueductal gray matter admin. Animals pre-treated with peptide prior to nigrostriatal lesions; dopaminedepletion-induced turning Intrathecal admin. ICV; different effectiveness in different strains and ages Intrathecal admin.; antagonized by D-Pro2,DTrp7,9-SP and phenoxybenzamine Spinal subarachnoid admin. Intrathecal admin. ICV Carbachol-induced boxing behavior

(continued on next page)

2232

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 7 (continued) Peptide 2

Behavior

Species

Effect

Notes

Vol

Page

Ref

Carbachol-induced boxing behavior Carbachol-induced boxing behavior

9

1S 117

521

9

1S 117

521

4 20

763 1437

219 126

4

763

219

SP antagonist [D-Pro , D-Trp7,9]-SP SP antisera

Boxing behavior

Rat

Decreased

Boxing behavior

Rat

No change

SP frag. (1–7) SP frag. (7–11)

Grooming Risk assessment behavior

Mouse Rat

Decreased Increased

SP frag. analog pyroglutamyl-SP (7–11) Substance K Tachykinin agonist GR73632 Tachykinin agonist GR73632 Tachykinin agonist GR73632 Tachykinin antagonist [Sar9,Met(O2)11]SP TK PG-KII TRH

Grooming

Mouse

Increased

Bite/scratch behavior Biting

Mouse Mouse

Increased Increased

Intraspinal admin. Spinal subarachnoid admin.

7 20

835 301

47 469

Licking

Mouse

Increased

Spinal subarachnoid admin.

20

301

469

Scratching

Mouse

Increased

Spinal subarachnoid admin.

20

301

469

Grooming

Rat

Increased

18

1349

87

Grooming Grooming

Rat Rat

Increased Increased

18 9

825 283

437 565

TRH

Licking

Rat

Increased

2

1S 99

187

TRH

Respiration

Rat

Increased

4

277

395

TRH

Righting

Rat

Improved

2

1S 99

187

TRH TRH TRH analog RGH 2202 TRH analog RX 77386 TRH analog RX 77386 Urotensin I

Shaking Tail movement Grooming Grooming Shaking Grooming

Rat Rat Rat Rat Rat Rat

Increased Increased Increased Increased Increased Increased

Nucleus basalis magnocellularis admin. ICV ICV; effect antagonized by haloperidol, naloxone and NT ICV; punished licking in water-deprived, ethanoltreated rats ICV; decreased tidal volume ICV; alcohol-induced righting impairment ICV Intrathecal admin.

4 6 12 11 11 6

239 1191 1309 897 897 3S 53

155 538 152 258 258 392

Urotensin I Vasotocin VIP antagonists

Grooming Development behaviors Development behaviors

Rat Cat Mouse

Decreased Delayed Decreased

6 5 18

3S 53 25 1131

392 204 596

VP VP VP

Barrel rolling Flank marking Flank marking

Rat Hamster Hamster

Increased Increased Increased

7 14 17

213 1049 1359

290 244 5

VP

Flank marking

Hamster

Increased

16

269

4

VP VP

Grooming Grooming and scratching

Rat Rat

Increased Increased

18 2

1389 1

153 350

VP VP

Hind limb movement Scratching

Rat Gerbil

Decreased Increased

9 4

1335 801

324 311

Dorsal periaqueductal gray matter admin.

Neonates Neonates ICV but not SC; in fasted, but not satiated, animals SC but not ICV Neonates Admin. during embryogenesis; neonates ICV Medial preoptic area admin. Medial preoptic-anterior hypothalamus admin.; estradiol- and progesteronesensitive response Medial preoptic-anterior hypothalamus, central gray or lateral septum-bed nucleus admin.; testosterone-sensitive effect ICV With central, but not peripheral, admin.; in nonstressful, but not stressful, conditions Intrathecal admin. With IV, but not SC, admin.; spontaneously seizing gerbil

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2233

Table 7 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

VP

Scratching

Rat

Increased

13

17

547

VP VP and OT Z-L-glutamyl-L-leucine

Vocalization Grooming Jumping

Sheep Rat Mouse

Decreased Increased Delayed

9 15 4

1221 229 417

417 52 295

Z-L-glycyl-L-proline

Jumping

Mouse

Delayed

4

417

295

Z-L-leucyl-L-glycine

Jumping

Mouse

No change

4

417

295

Z-L-prolyl-L-leucine

Jumping

Mouse

No change

4

417

295

Z-L-prolyl-D-leucine

Jumping

Mouse

Delayed

Intrathecal admin.; potentiated by naltrexone ICV Prenatal exposure Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping

4

417

295

2234

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 8 Stereotyped and other behaviors sorted by behavior Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

AT II

Amphetamine-induced stereotypy Amphetamine-induced stereotypy

Rat

Increased

ICV

9

475

58

Rat

Decreased

2

9

285

Rat

Increased

9

475

58

CCK CCK analog Boc-CCK-4

Amphetamine-induced stereotypy Anxiety behavior Anxiety behavior

Effect antagonized by 2-bromo-ergocryptine and naloxone ICV

Rat Rat

Increased No change

16 19

1313 27

263 247

CCK frag. CCK-8

Anxiety behavior

Rat

No change

19

27

247

Galanin MCH

Anxiety behavior Anxiety behavior

Mouse Rat

No change Decreased

16 17

1283 171

556 207

MSH (␣)

Anxiety behavior

Rat

Increased

17

171

207

NPY Pancreatic polypeptide ACTH frag. (1–24) ACTH frag. (4–10) NPY

Anxiety Anxiety Anxiety Anxiety Anxiety

Rat Rat Chicken Chicken Mouse

Decreased No change Increased Increased Decreased at low dose, increased at high dose

909 1445 915 915 359

428 14 414 414 387

AT II

Apomorphine-induced stereotypy Apomorphine-induced stereotypy Apomorphine-induced stereotypy Barrel rolling Barrel rolling

Rat

Increased

ICV; anxiolytic effect via Y1 receptors and anxiogenic via Y2 receptors ICV

14 20 11 11 19

9

475

58

Rat

Increased

ICV

9

475

58

Rat

Decreased

8

39

26

Rat Mouse

Increased Increased

8 15

1089 607

201 579

OT Somatostatin Somatostatin frag. (3–8), (9–14), or (7–10) VP BBS Gastrin-releasing peptide Kassinin Neuromedin B Ranatensin SP Substance K SP

Barrel rolling Barrel rolling Barrel rolling

Rat Rat Rat

Increased Increased No change

Rats treated chronically with haloperidol ICV or IV With admin. to ventrolateral thalamus but not other brain areas ICV ICV ICV

6 10 10

747 1153 1153

492 569 569

Barrel rolling Bite/scratch behavior Bite/scratch behavior Bite/scratch behavior Bite/scratch behavior Bite/scratch behavior Bite/scratch behavior Bite/scratch behavior Biting

Rat Mouse Mouse Mouse Mouse Mouse Mouse Mouse Mouse

Increased Increased Increased Increased Increased Increased Increased Increased Increased

7 7 7 7 7 7 7 7 20

213 835 835 835 835 835 835 835 301

290 47 47 47 47 47 47 47 469

Tachykinin agonist GR73632 CRF

Biting

Mouse

Increased

20

301

469

Boxing behavior

Rat

Decreased

6

891

107

SP

Boxing behavior

Rat

Increased

6

891

107

Endorphin (␥)

Sarlasin

Saralasin Cyclo (Leu-Gly) Dynorphin frag. (1–13) NPY antibody

behavior behavior behaviors behaviors behaviors

Central nucleus of the amygdala admin. Central nucleus of the amygdala admin. ICV Admin. to medial preoptic area Admin. to medial preoptic area ICV ICV

ICV Intraspinal admin. Intraspinal admin. Intraspinal admin. Intraspinal admin. Intraspinal admin. Intraspinal admin. Intraspinal admin. Spinal subarachnoid admin. Spinal subarachnoid admin. Medial frontal cortex admin.; carbacholinduced boxing behavior Medial frontal cortex admin.; carbacholinduced boxing behavior

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2235

Table 8 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

SP antagonist [D-Pro , D-Phe7, D-Trp9]-SP SP antagonist [D-Pro2, D-Trp7,9]-SP SP antisera

Boxing behavior

Rat

Decreased

9

1S 117

521

Boxing behavior

Rat

Decreased

9

1S 117

521

Boxing behavior

Rat

No change

9

1S 117

521

CCK-8

Catalepsy

Rat

Blocked

6

237

253

Ceruletide

Catalepsy

Rat

Decreased

10

779

250

Ceruletide analogs

Catalepsy

Mouse

Increased

3

701

610

Dermorphin

Catalepsy

Rat

Increased

6

3S 165

59

Dermorphin

Catalepsy

Rat

Decreased

6

3S 165

59

Endorphin (␤)

Catalepsy

Rat

Increased

6

237

253

MIF-1

Catalepsy

Mouse

Prevented tolerance

8

1051

380

MIF-1

Catalepsy

Rat

Decreased

2

105

85

MIF-1 analog parepide

Catalepsy

Rat

Increased

5

883

381

MIF-1 analog YPLG

Catalepsy

Mouse

No change

8

1051

380

NPY NPY frag. (1–30) SP CCK-4 CCK-8 CCK-8, desulfated Dynorphin frag. (1–6) Dynorphin frag. (1–7) Dynorphin frag. (1–8)

Catalepsy Catalepsy Chafing movements Circling Circling Circling Circling Circling Circling

Rat Rat Fish Rat Rat Rat Rat Rat Rat

Increased No effect Increased No change Increased No change Increased Increased Increased

Carbachol-induced boxing behavior Carbachol-induced boxing behavior Carbachol-induced boxing behavior ICV; endorphininduced catalepsy; effect blocked by frontal cortex lesion Haloperidol-induced catalepsy Hexobarbital-induced sleep ICV; effects increased by caudate lesion ICV; in dermorphintolerant, but not morphine-tolerant, rats ICV; effects enhanced by frontal cortex ablation Haloperidol-induced catalepsy Haloperidol-induced catalepsy Haloperidol-induced catalepsy Haloperidol-induced catalepsy ICV ICV

15 15 6 7 7 7 8 8 8

799 799 139 809 809 809 837 837 837

54 54 86 367 367 367 186 186 186

Dynorphin frag. (2–17) Enkephalin (Leu) MIF-1

Circling Circling Circling

Rat Rat Rat

Increased Increased No change

8 8 2

837 837 189

186 186 148

NPY antibody

Circling

Mouse

Increased

15

607

579

Ceruletide analogs

Convulsions

Mouse

Decreased

3

701

610

CCK-4

Defecation

Rat

No change

6

91

275

CCK-8

Defecation

Rat

No change

6

91

275

MIF-1

Defecation

Rat

Decreased

2

1S 143

120

MSH

Defecation

Rat

Increased

1

147

119

2

ICV ICV ICV Substantia nigra admin. Substantia nigra admin. Substantia nigra admin.; not antagonized by naloxone Substantia nigra admin. Substantia nigra admin. ICV; dopamine- or 5HT-stimulated circling With admin. to ventromedial thalamus, but not other brain areas Harman-induced convulsions Nucleus accumbens admin. Nucleus accumbens admin. Novelty-induced defecation Passive-avoidanceinduced defecation

(continued on next page)

2236

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 8 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

MSH

Defecation

Rat

Increased

2

1S 143

120

Secretin MIF-1 Vasotocin VIP antagonists

Defecation Depressive behaviors Development behaviors Development behaviors

Rat Human Cat Mouse

Increased Decreased Delayed Decreased

Novelty-induced defecation ICV

4 4 5 18

739 297 25 1131

83 559 204 596

ACTH ACTH frag. (4–10) Casomorphin frag. (1–5) Endorphin (␣)

Distress Distress Distress Distress

vocalization vocalization vocalization vocalization

Chicken Chicken Chicken Chicken

Increased Increased Decreased Decreased

11 11 5 5

915 915 829 823

414 414 415 573

Endorphin (␤)

Distress vocalization

Chicken

Decreased

5

823

573

Endorphin (␥)

Distress vocalization

Chicken

Decreased

5

823

573

VP

Flank marking

Hamster

Increased

14

1049

244

VP

Flank marking

Hamster

Increased

17

1359

5

VP

Flank marking

Hamster

Increased

16

269

4

CRF antagonist ␣-helical CRF Galanin

Freezing behavior

Rat

Decreased

15

1303

237

Freezing behavior

Rat

No change

15

1303

237

Ceruletide analogs

Gnawing

Mouse

Increased

2

2S 65

609

Secretin NPY NPY frag. (1–30) ACTH

Gnawing Grasping Grasping Grooming

Rat Rat Rat Rat

No change Increased No effect Increased

4 15 15 7

739 799 799 597

83 54 54 476

ACTH ACTH

Grooming Grooming

Rat Rat

Increased Increased

4 5

907 713

202 546

ACTH ACTH

Grooming Grooming

Rat Rat

Increased Increased

6 7

369 651

562 160

ACTH

Grooming

Rat

Increased

16

1263

434

ACTH

Grooming

Rat and mouse

Increased

8

841

159

ACTH frag. (1–24)

Grooming

Rat

Increased

4

833

6

ACTH frag. (1–4)

Grooming

Rat

Enhanced

7

1

134

ACTH/MSH frag. analogs, C-frag. elongated or cyclized

Grooming

Rat

Increased

5

1197

232

Neonates Admin. during embryogenesis; neonates

ICV; chicks With ICV, but not IP, admin. With ICV, but not IP, admin.; chicks With ICV, but not IP, admin. Medial preoptic area admin. Medial preopticanterior hypothalamus admin.; estradiol- and progesterone-sensitive response Medial preopticanterior hypothalamus, central gray or lateral septum-bed nucleus admin.; testosteronesensitive effect Foot-shock-induced behavior Foot-shock-induced behavior Methylphen-induced gnawing ICV ICV ICV ICV; blocked by naloxone ICV Pre-optic, anterior hypothalamic admin. ICV ICV; area of action localized to anteriorventral third ventricle ICV; not antagonized by nitric oxide synthase inhibitor ICV; greater effect in rats than mice ICV; effect antagonized by naloxone In MSH-induced grooming; no effect alone More potent than unmodified frag.

(continued on next page)

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2237

Table 8 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

Amylin BBS BBS

Grooming Grooming Grooming

Rat Rat Rat

No change Increased Increased

17 2 8

589 2S 179 237

91 198 303

BBS BBS

Grooming Grooming

Rat Rat

Increased Increased

12 13

761 1215

182 99

BBS

Grooming

Rat

Increased

4

693

355

BBS

Grooming

Rat

Increased

7

557

352

BBS

Grooming

Rat

Increased

9

1S 233

260

BBS

Grooming

Rat

Increased

9

1S 245

260

BBS

Grooming

Rat

Increased

4

907

202

BBS

Grooming

Rat

Increased

6

369

562

BBS

Grooming

Rat

Increased

6

1179

564

BBS

Grooming

Rat

Increased

6

1179

563

CGRP

Grooming

Rat

Increased

17

1183

294

CGRP CRF CRF CRF

Grooming Grooming Grooming Grooming

Rat Rat Rat Rat

Decreased Increased Increased Increased

5 13 6 20

861 1149 3S 53 509

297 146 392 571

CRF

Grooming

Rat and mouse

Increased

8

841

159

Dynorphin analog desTyr1-dynorphin (1–13) Dynorphin frag. (1–13)

Grooming

Rat

Increased

4

833

6

Grooming

Rat

Increased

4

833

6

Dynorphin frag. (1–13)

Grooming

Rat and mouse

Increased

1

341

578

Galanin

Grooming

Rat

No change

11

1001

304

MSH MSH (␣)

Grooming Grooming

Rat Rat

Increased Increased

2 2

333 101

401 402

MSH (␣) MSH (␣)

Grooming Grooming

Rat Rat

Increased Increased

ICV ICV With admin. to multiple brain areas ICV ICV; developed over 8 days ICV; effect antagonized by neuroleptics ICV; antagonized by morphine With admin. to nucleus tractus solitarius but not nucleus accumbens With admin. to nucleus tractus solitarius but not nucleus accumbens With ICV, but not IV, admin.; no antagonism by haloperidol, morphine, naloxone, or NT. No effect of hypophysectomy or adrenalectomy ICV; different doses induce different types of grooming Effect enhanced by haloperidol, antagonized by naloxone and NT ICV; antagonized by haloperidol Antagonized by nitric oxide synthase inhibitor ICV ICV ICV but not SC ICV; not antagonized by melacortin-4 receptor antagonist ICV; greater effect in rats than mice; not antagonized by dexamethasone ICV; effect antagonized by naloxone ICV; effect antagonized by naloxone ICV; not reversible by naloxone Paraventicular nucleus admin. ICV Not antagonized by ␥ MSH ICV ICV; antagonized by diazepam or baclofen

4 16

721 821

286 110

(continued on next page)

2238

R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 8 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

MSH (␣)

Grooming

Rat

Increased

18

393

470

MSH (␣)

Grooming

Rat

Increased

7

1

134

MSH (␣)

Grooming

Rat

Increased

ICV; antagonized by melanin-concentrating hormone Enhanced by ACTH frag. (1–4) Ventral tegmental area admin.; effect enhanced by bicuculline, blocked by atropine

12

203

127

MSH (␥) MSH analog [Nle4, D-Phe7]-␣ MSH MSH analogs NP-E-I

Grooming Grooming

Rat Rat

No change Increased

2 4

101 721

402 286

Grooming Grooming

Rat Rat

Increased Increased

6 18

1185 393

505 470

NT OT OT

Grooming Grooming Grooming

Rat Rat Rat

No change Increased Increased

4 12 9

493 113 1s 223

511 405 522

OT Sauvagine

Grooming Grooming

Rat Rat

Increased Increased

18 6

1389 3S 53

153 392

Sauvagine Secretin SP

Grooming Grooming Grooming

Rat Rat Mouse

Decreased No change Increased

6 4 6

3S 53 739 363

392 83 217

SP SP

Grooming Grooming

Rat Rat

Increased Increased

1 7

103 557

262 352

SP frag. (1–7) SP frag. analog pyroglutamyl-SP (7–11) Tachykinin antagonist [Sar9,Met(O2)11]SP TK PG-KII TRH

Grooming Grooming

Mouse Mouse

Decreased Increased

4 4

763 763

219 219

Grooming

Rat

Increased

18

1349

87

Grooming Grooming

Rat Rat

Increased Increased

18 9

825 283

437 565

TRH analog RGH 2202 TRH analog RX 77386 Urotensin I

Grooming Grooming Grooming

Rat Rat Rat

Increased Increased Increased

12 11 6

1309 897 3S 53

152 258 392

Urotensin I VP VP and OT BBS

Grooming Grooming Grooming Grooming and scratching

Rat Rat Rat Rat

Decreased Increased Increased Increased

6 18 15 10

3S 53 1389 229 529

392 153 52 259

ICV

ICV; antagonized by MSH PVN and IV admin. ICV Ventral tegmental area admin.; effect not altered by sex, sexsteroids, or dopamine antagonists ICV ICV but not SC; in fasted, but not satiated, animals SC but not ICV ICV ICV; different effectiveness in different strains and ages; enhanced by naloxone but not phenoxybenzamine or haloperidol ICV ICV; not antagonized by morphine

Nucleus basalis magnocellularis admin. ICV ICV; effect antagonized by haloperidol, naloxone and NT Neonates ICV but not SC; in fasted, but not satiated, animals SC but not ICV ICV Prenatal exposure Neonates

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2239

Table 8 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

OT

Grooming and scratching

Rat

Increased

2

1

350

VP

Grooming and scratching

Rat

Increased

2

1

350

MIF-1

Head turning

Rat

No change

2

189

148

MIF-1 VP Dynorphin frag. (1–13) CRF

Mouse Rat Rat Monkey

No change Decreased Increased Increased

2 9 4 4

189 1335 631 217

148 324 168 268

Casomorphin analog BCH 325 L-pyroglutamyl-Lleucine Z-L-glutamyl-L-leucine

Head twitch Hind limb movement Hind limb paralysis Huddling and lying down Jerking

With central, but not peripheral, admin.; in non-stressful, but not stressful, conditions With central, but not peripheral, admin.; in non-stressful, but not stressful, conditions Striatally-evoked head turning 5HT-stimulated twitch Intrathecal admin. Intrathecal admin. ICV

Rat

Decreased

16

635

447

Jumping

Mouse

Delayed

4

417

295

Jumping

Mouse

Delayed

4

417

295

Z-L-glycyl-L-proline

Jumping

Mouse

Delayed

4

417

295

Z-L-leucyl-L-glycine

Jumping

Mouse

No change

4

417

295

Z-L-prolyl-L-leucine

Jumping

Mouse

No change

4

417

295

Z-L-prolyl-D-leucine

Jumping

Mouse

Delayed

Bromocriptine-induced jerks Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping Morphine-withdrawalinduced jumping

4

417

295

BBS BBS Gastrin-releasing peptide

Licking Licking Licking

Rat Rat Rat

Decreased Decreased Decreased

17 16 17

107 903 107

175 523 175

Gastrin-releasing peptide Neuromedin B-10

Licking Licking

Rat Rat

Decreased Decreased

16 17

903 107

523 175

SP

Licking

Mouse

Increased

20

301

469

Tachykinin agonist GR73632 TRH

Licking

Mouse

Increased

20

301

469

Licking

Rat

Increased

2

1S 99

187

Morphine-induced behaviors Myoclonus (serotonergic behavior) Obsessive compulsive behavior Opiate withdrawal behavior Oral act. (serotonergic behavior)

Mouse

No change

17

1291

97

Mouse

No change

10

5

439

Human

Decreased

13

1083

139

Rat

No change

15

1303

237

Rat

No change

14

1159

206

Mouse Rat Rat

Increased Increased Increased

2 4 4

2S 65 277 277

609 395 395

Adrenal Peptide E (Frog) ACTH OT Galanin MIF-1

Ceruletide analogs BBS Calcitonin

Ptosis Respiration Respiration

Admin. simultaneously with neuromedin B-10 Admin. simultaneously with gastrin-releasing peptide Spinal subarachnoid admin. Spinal subarachnoid admin. ICV; punished licking in water-deprived, ethanol-treated rats ICV 5-hydroxytryptophaninduced In a single patient

6-hydroxydopaminelesioned rats treated with desipramine ICV ICV

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Table 8 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

CCK Enkephalin analog DADLE Enkephalin analog DADLE Enkephalin analog DAGO Enkephalin analog FK33–824 NT NT SP TRH

Respiration Respiration

Cat Rat

Increased tidal volume Increased

9 3

809 1031

246 225

Respiration

Rat

Increased

Ventral medulla admin. Nucleus tractus solitarius admin. Third ventricle admin.

3

1023

236

Respiration

Rat

Nucleus tractus solitarius admin.

3

1031

225

Respiration

Mouse

Increased at low dose decreased at high dose Decreased rate

9

777

378

Respiration Respiration Respiration Respiration

Monkey Rat Rat Rat

Decreased No change No change Increased

5 4 4 4

125 277 277 277

366 395 395 395

BBS

Righting

Rat

Impaired

2

1S 99

187

Endorphin (␤)

Righting

Rat

Impaired

2

1S 99

187

NT

Righting

Rat

Impaired

2

1S 99

187

TRH

Righting

Rat

Improved

2

1S 99

187

SP

Rigidity

Rat

Reversed

1

103

262

SP

Risk assessment behavior

Rat

Increased

20

1437

126

SP frag. (7–11)

Risk assessment behavior

Rat

Increased

20

1437

126

ACTH/MSH 4–10 analog ORG 2766

Rotation

Rat

Decreased

14

1317

10

CCK-8

Rotation

Rat

Increased

18

1161

396

Cyclo (Leu-Gly)

Rotation

Rat

No change

8

39

26

MIF-1 analog 3(R)-[(2(S)pyrrolidinylcarbonyl) amino]-2-oxo-1pyrrolidineacetamide NT SP

Rotation

Rat

Increased

ICV ICV ICV ICV; decreased tidal volume ICV; alcohol-induced righting impairment ICV; alcohol-induced righting impairment ICV; alcohol-induced righting impairment ICV; alcohol-induced righting impairment ICV; in haloperidol treated Dorsal periaqueductal gray matter admin. Dorsal periaqueductal gray matter admin. Nigrostriatal lesions and amphetamineinduced turning Animals pre-treated with peptide prior to nigrostriatal lesions; dopamine-depletioninduced turning Apomorphine-induced rotation in rats with unilateral nigrostriatal lesions Apomorphine- or LDOPA-induced rotation in 6-hydroxydopaminelesioned rats

18

1209

363

Rotation Rotation

Rat Rat

Increased Normalized

6 18

1057 1161

389 396

CCK-8 Gastrin (1–17) BBS

Rumination Rumination Scratching

Sheep Sheep Mouse

No change Increased Increased

5 5 9

81 81 909

238 238 567

BBS

Scratching

Rat

Increased

6

1179

563

Substantia nigra admin. Animals pre-treated with peptide prior to nigrostriatal lesions; dopamine-depletioninduced turning ICV Intrathecal admin.; not antagonized by DPro2,D-Trp7,9-SP and phenoxybenzamine ICV; antagonized by naloxone

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R.N. McLay et al. / Peptides 22 (2001) 2181–2255

2241

Table 8 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

Somatostatin

Scratching

Mouse

Increased

9

909

567

SP SP

Scratching Scratching

Mouse Mouse

Increased Increased

4 6

517 363

249 217

SP

Scratching

Mouse

Increased

9

909

567

SP

Scratching

Mouse

Increased

20

301

469

Tachykinin agonist GR73632 VP

Scratching

Mouse

Increased

20

301

469

Scratching

Gerbil

Increased

4

801

311

VP

Scratching

Rat

Increased

13

17

547

SP Dynorphin frag. (1–13) Enkephalin (Met) Enkephalin analog DAMA TRH TRH analog RX 77386 BBS MIF-1 analog Cyclo(Leu-Gly) Endorphin (␤) Melatonin OT CCK

Scratching and licking Shaking Shaking Shaking

Rat Rat Fish Rat

Increased Increased Increased Increased

Intrathecal admin.; not antagonized by DPro2,D-Trp7,9-SP and phenoxybenzamine Intrathecal admin. ICV; different effectiveness in different strains and ages Intrathecal admin.; antagonized by DPro2,D-Trp7,9-SP and phenoxybenzamine Spinal subarachnoid admin. Spinal subarachnoid admin. With IV, but not SC, admin.; spontaneously seizing gerbil Intrathecal admin.; potentiated by naltrexone Intrathecal admin. ICV or IV

3 8 6 4

49 1089 139 239

485 201 86 155

Shaking Shaking Sighing Sniffing

Rat Rat Rat Rat

Increased Increased Increased Increased

4 11 4 5

239 897 277 7

155 258 395 310

Startle Startle response Startle response Stretching

Rat Rat Rat Mouse

Decreased Decreased Increased Decreased

2 2 6 10

1S 137 1S 155 567 31

234 188 284 9

OT TRH Endorphin (␤)

Tail movement Tail movement Trembling

Rat Rat Rat

Increased Increased Decreased

6 6 2

1191 1191 1S 99

538 538 187

Enkephalin MSH

Vocalization Vocalization

Sheep Chicken

Decreased Decreased

9 11

1221 647

417 413

VP ACTH AT BBS Bradykinin NT OT SP MSH antagonist [D-Trp7, Ala8, DPhe10)␣-MSH (6–11)amide Calcitonin

Vocalization Vomiting Vomiting Vomiting Vomiting Vomiting Vomiting Vomiting Walking pattern

Sheep Dog Dog Dog Dog Dog Dog Dog Rat

Decreased No change No change No change No change Increased Increased No change Increased recovery

9 6 6 6 6 6 6 6 16

1221 1S 173 1S 173 1S 173 1S 173 1S 173 1S 173 1S 173 319

417 597 597 597 597 597 597 597 433

Writhing

Mouse

Increased analgesia

6

3S 277

200

ICV ICV Neonates ICV Apomorphine-induced Sniffing

ICV; abdominal irritant-induced stretching Intrathecal admin. Intrathecal admin. ICV; alcohol-induced tremors ICV Separation-induced vocalization in chicks ICV ICV ICV ICV ICV ICV ICV ICV Admin. after sciatic nerve crush

ICV, IP, and IV, but no effect SC; Achinduced writhing

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R.N. McLay et al. / Peptides 22 (2001) 2181–2255

Table 8 (continued) Peptide

Behavior

Species

Effect

Notes

Vol

Page

Ref

ACTH

Yawning

Rat

Increased

16

1263

434

Casomorphin analog BCH 325

Yawning

Rat

Normalized

16

635

447

Casomorphin analogs

Yawning

Rat

Decreased

13

69

464

NT

Yawning

Rat

Decreased

12

755

398

NT analog[D-Trp11]NT

Yawning

Rat

Decreased

12

755

398

OT

Yawning

Rat

Increased

ICV; antagonized by nitric oxide synthase inhibitor Bromocriptine-evoked yawning that was inhibited by reserpine ICV; apomorphineinduced yawning ICV; apomorphineinduced yawning ICV; apomorphineinduced yawning ICV

10

559

11

2.7. Stereotyped and other behaviors No categorization system is likely to capture all of the types of behaviors that peptides can affect. Because readers might be interested in a particular behavior listed in this catch-all category, the table is presented twice, once organized by peptide (Table 7) and once by behavior (Table 8).

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