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Effects of denervation on the excretion of the seminal vesicle of rat
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Autonomic nervous system activity in children with cerebral palsy. Heart rate variability during sleep Eiji K u r i h a r a a n d K a z u h i k o K o m i y a Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
In order to assess the activity of the autonomic nervous system in 25 children affected by severe cerebral palsy, we measured the coefficient of variation of R-R intervals on the electrocardiogram during light sleep. The coefficient of variation was more variable than that of control children. The correlation between coefficient of variation and mean R-R interval was poor in children with cerebral palsy compared with that of the control group. Four children with cerebral palsy had very high values of coefficient of variation; in three of them there was muscle hypotonia and dyspnea due to tongue swallowing. It was suspected that there was an overload of the heart rate and respiration regulatory mechanisms. In cerebral palsy children with low values of coefficient of variation we suspected a low parasympathetic activity or poor parasympathetic functions. In the children of the control group, especially among the youngest, there was a very high coefficient of correlation between coefficient of variation and mean R-R interval, a characteristic feature of young children when compared with adults. (The Autonomic Nervous System, 25: 561-566, 1988)
Effects of denervation on the excretion of the seminal vesicle of rat T o y o h i r o T e r a s a k i , M u n e k a d o K o j i m a , M o t o h i t o K i t a m o r i , K a z u n a r i Y u r i a n d Yuji A z u m a Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan
A method for continuous sampling of the fluid excreted from one seminal vesicle was applied to rats. The volume of fluid excreted every 12 h was measured in 35 sexually mature rats. In three groups of 7 rats each we performed hypogastric neurectomy, pelvic neurectomy, and combined hypogastric and pelvic neurectomy, respectively. Fourteen rats were used as controls. We assumed that an excretion of less than 4 /~l/h represents the resting excretory level. In 3 out of 14 control rats we only observed resting levels of excretion. An excretion of larger volume was occasionally observed in the other 11 control rats, in 3 of the rats with hypogastric neurectomy and in 3 of the rats with pelvic neurectomy. In contrast, all the rats which had combined hypogastric and pelvic neurectomy showed only the resting level of excretion. The results suggest that the excretory processes of the rat seminal vesicles are under the control of both the hypogastric and pelvic nerves. (The Autonomic Nervous System, 25: 567-573, 1988)
The role of fastigial pressure response to head-up tilting N o b u y u k i T e r a d a ~, S h o z o K o y a m a 2 Joji H o r i u c h i ~ a n d T o r u T a k c u c h i 1 t Department of Physiology, Yamanashi Medical College, Yamanashi, Japan, and 2 Department of Physiology, Shinshu University School of Medicine, Matsumoto, Japan
The role of the orthostatic compensatory reflex on the fastigial nucleus of the cerebellum during a rapid cyclic head-up tilting to 90 ° (0.5 Hz for 1 min) was studied in anaesthetized rats. Oscillatory head-up
Autonomic nervous system activity in children with cerebral palsy. Heart rate variability during sleep Eiji K u r i h a r a a n d K a z u h i k o K o m i y a Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
In order to assess the activity of the autonomic nervous system in 25 children affected by severe cerebral palsy, we measured the coefficient of variation of R-R intervals on the electrocardiogram during light sleep. The coefficient of variation was more variable than that of control children. The correlation between coefficient of variation and mean R-R interval was poor in children with cerebral palsy compared with that of the control group. Four children with cerebral palsy had very high values of coefficient of variation; in three of them there was muscle hypotonia and dyspnea due to tongue swallowing. It was suspected that there was an overload of the heart rate and respiration regulatory mechanisms. In cerebral palsy children with low values of coefficient of variation we suspected a low parasympathetic activity or poor parasympathetic functions. In the children of the control group, especially among the youngest, there was a very high coefficient of correlation between coefficient of variation and mean R-R interval, a characteristic feature of young children when compared with adults. (The Autonomic Nervous System, 25: 561-566, 1988)
Effects of denervation on the excretion of the seminal vesicle of rat T o y o h i r o T e r a s a k i , M u n e k a d o K o j i m a , M o t o h i t o K i t a m o r i , K a z u n a r i Y u r i a n d Yuji A z u m a Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan
A method for continuous sampling of the fluid excreted from one seminal vesicle was applied to rats. The volume of fluid excreted every 12 h was measured in 35 sexually mature rats. In three groups of 7 rats each we performed hypogastric neurectomy, pelvic neurectomy, and combined hypogastric and pelvic neurectomy, respectively. Fourteen rats were used as controls. We assumed that an excretion of less than 4 /~l/h represents the resting excretory level. In 3 out of 14 control rats we only observed resting levels of excretion. An excretion of larger volume was occasionally observed in the other 11 control rats, in 3 of the rats with hypogastric neurectomy and in 3 of the rats with pelvic neurectomy. In contrast, all the rats which had combined hypogastric and pelvic neurectomy showed only the resting level of excretion. The results suggest that the excretory processes of the rat seminal vesicles are under the control of both the hypogastric and pelvic nerves. (The Autonomic Nervous System, 25: 567-573, 1988)
The role of fastigial pressure response to head-up tilting N o b u y u k i T e r a d a ~, S h o z o K o y a m a 2 Joji H o r i u c h i ~ a n d T o r u T a k c u c h i 1 t Department of Physiology, Yamanashi Medical College, Yamanashi, Japan, and 2 Department of Physiology, Shinshu University School of Medicine, Matsumoto, Japan
The role of the orthostatic compensatory reflex on the fastigial nucleus of the cerebellum during a rapid cyclic head-up tilting to 90 ° (0.5 Hz for 1 min) was studied in anaesthetized rats. Oscillatory head-up