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Functional characteristics of the luteinizing hormone-releasing hormone pulse generator in conscious unrestrained female rabbits: activation by norepinephrine.
TLDR
The data indicate that the activity of the L HRH pulse generator in this species presents remarkable annual variations in its mean LHRH output mainly due to a greater amplitude of theLHRH signal and that norepinephrine is a potent stimulator of LHRh release in conscious unrestrained female rabbits.
Total Cerebral Blood Flow in the Monkey Measured by Hydrogen Clearance
TLDR
The experience suggests that one may reliably measure average total cerebral blood flow in the experimental setting by following the clearance of hydrogen from torcular blood, and this method can be easily combined with the standard hydrogen clearance technique for measuring local tissue blood flow.
Comparison of radio-iodinated serum albumin and blue dextran as indicators to measure rate of formation of cerebrospinal fluid
TLDR
It is concluded that blue dextran is preferable to RISA-125 to measure the rate of formation of cerebrospinal fluid in the experimental setting because it is easier to detect accurately small changes of CSF formation with blue deXTran.
The positive feedback action of vasopressin on its own release from rat septal tissue in vitro is receptor-mediated
TLDR
The results suggest that the positive feedback action of AVP on its own release from septal fragments is potassium-stimulated, calcium-dependent and mainly V2 receptor-mediated.
Push‐Pull Perfusion of the Hypothalamus and the Caudate Nucleus in Conscious, Unrestrained Animals a
TLDR
The PPP technique coupled to HPLC-EC and RIA procedures to measure localized release of neurotransmitters, metabolites, and neuropeptides simultaneously in the same perfusate samples from discrete brain areas appears to be a powerful technique in furthering knowledge of the in vivo local neurochemistry of the brain of conscious, freely moving animals.
A Practical Circuit for Hydrogen Clearance Blood Flow Measurement.
Abstract : An electronic circuit which may be used to record tissue hydrogen concentrations with platinum electrodes is described. This circuit provides constant electrode polarization potential for
Positive Feedback of Vasopressin on its Own Release in the Central Nervous System: in vitro Studies
TLDR
Evidence is shown that synthetic AVP can evoke marked in vitro release of endogenous immunoreactive AVP from male rat septal and hypothalamic tissue superfused in vitro and it is proposed that this novel and robust positive feedback of AVP on its own release may be involved in the mechanism of memory consolidation of certain behavioral tasks known to be affected by AVP.
The effect of dexamethasone on the rate of formation of cerebrospinal fluid in the monkey.
TLDR
It is concluded that the therapeutic benefit of dexamethasone for intracranial spatial decompensation derives from a mechanism of action that leaves the rate of CSF formation unchanged.
The Effect of a Simulated Subarachnoid Hemorrhage on Cerebral Blood Flow in the Monkey
TLDR
The hydrogen clearance method was used to measure local and total cerebral blood flow in the rhesus monkey before and for five hours after a simulated subarachnoid hemorrhage, suggesting that vasoactive agents in fresh whole blood and the arterial spasm they produce when added to cerebrospinal fluid play only a limited role in the pathogenesis of ischemic encephalopathy that follows an SAH.
Release of Vasopressin from the Septum and Hippocampus of Freely Behaving Male Rats: Effect of Bacitracin and Synthetic Vasopressin
TLDR
The major findings were that the spontaneous release of immunoreactive AVP from the dorsal hippocampus was episodic in nature and did not require the presence of bacitracin in the perfusion medium to reliably demonstrate its pattern of release.
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