.... In dehydrated animals (24 h water deprivation) the arterial blood plasma level of AVP doubled causing antidiuretic effects. Also the concentration of AVP in push-pull perfusates of the limbic septal area was significantly higher in dehydrated (5.6 pg AVP/ml perfusate) than in control animals (2.6 pg AVP/ml...

... of angiotensin II into the PVN and sites caudal to it was without effect on the measured variables. In dehydrated rats, on the other hand, microinjection of 5 ng angiotensin II, both into the PVN and rostral to it, resulted in a prolonged increase in the plasma vasopressin concentration. The reponse from...

... nuclei and the magnocellular accessory cells of the lateral hypothalamic area. Furthermore, dehydration and salt loading, which is known to cause release and depletion of VP and oxytocin from the neurohypophysis, also caused a marked reduction of GAL-like immunoreactivity in the posterior lobe...

.... Two days of water deprivation resulted in significant increases in hematocrit, plasma osmolality and vasopressin levels, indicating a functional activation of magnocellular vasopressin neurons. The uptake and retention of radioactivity from [l- l4 C]glucose in the dehydrated rats, compared to controls...

... and independently affected by alteration of the ingestive behavior. 25 04 1984 9 05 1985 1 4 2008 Dynorphin α-Neoendorphin β-Endorphin Food intake Drinking Dehydration Neuroendocrinology 42: 267-272 (1986) © 1986 S. Karger AG, Basel 0028-3835/86/0423-0267 S 2.75/0 Brain and Peripheral...

...Kurt Racké; Margarethe Holzbauer; Trevor R. Cooper; Dennis F. Sharman The effect of dehydration on dopamine (DA) release from the neural and intermediate lobes of the rat pituitary gland after electrical stimulation of the pituitary stalk was studied in vitro. The amount of DA released from...

... results indicate that one of these factors, Atriopeptin III, can inhibit dehydration and hemorrhage-induced AVP release in the rat. 3 days of water deprivation resulted in elevated plasma AVP levels (36.1 ± 4.7 pg AVP/ml) which were significantly reduced following intravenous infusion of 0.02 (21.4 + 3.6...

...Peter A. Doris; Frederick R. Bell Levels of arginine-vasopressin (AVP), the antidiuretic hormone, have been concurrently measured by radioimmunoassay (RIA) in plasma (p) and cerebrospinal fluid (CSF) from conscious, unrestrained steers. During 4 days of dehydration, plasma osmolarity (posm) rose...

... by a single class of high-affinity, saturable sites with a B max of 1.309 ±119 fmol/mg of protein and a K a of 0.51 ± 0.03 × 10 9 M –1l . Compared to LE rats the density of ANG-binding sites in anterior pituitary was higher in DI rats (+84.2%), with HZ having an intermediate concentration (+41.6). Dehydration...

...Charles E. Wade; Lanny C. Keil; David J. Ramsay Plasma vasopressin concentrations (pAVP) are elevated during dehydration due to alterations in extracellular fluid (ECF) volume and tonicity. The contributions of the reduction in volume and increase in plasma osmolality to the rise in pAVP were...

... the water deprivation-induced increase in plasma sodium concentration or the rate of DOPA accumulation in the posterior pituitary. These results suggest that tuberohypophyseal dopaminergic neurons are regulated, at least in part, by sodium or osmoreceptors. Dehydration Rehydration Posterior Pituitary...

... of manipulations. Dehydration of rats by 5 days enforced imbibition of a 2% solution of NaCl resulted in a significant decrease in the levels of ir-DYN, ir-l-ENK and ir-VP, but not in those of ir-β-END in the neurointermediate lobe of the pituitary. In contrast, substitution of drinking water by a solution...

..., tuberoinfundibular and tuberohypophyseal DA nerves, respectively. Severe dehydration (2 days water deprivation followed by 3 days of 2% NaCI substituted for drinking water) incressed the concentration of DA in the posterior pituitary but not in the striatum or median eminence. Less severe dehydration caused by 2...

... the osmotic threshold for vasopressin release. Ncuroendocrinology 7: 219-226 (1971) Osmotic Threshold for Vasopressin Release as Determined by Saline Infusion and by Dehydration A.M. M oses and M. M il l e r 1 Veterans Administration Hospital and the Department of Medicine, State University of New York...

...Naima Sebaai; Jean Lesage; Christophe Breton; Didier Vieau; Sylvie Deloof Dehydration is a classic homeostatic stressor in rats that leads to a series of endocrine responses including stimulation of the hypothalamo-pituitary-adrenal (HPA) axis. During the last decade, it has been well established...

... antibody directed against VP resulted in a rapid decrease in plasma corticosterone, but not ACTH, in water-restricted rats, but not in rats receiving water ad libitum. These data suggest that during dehydration, elevated plasma VP can stimulate the production of corticosterone by the adrenal, independently...

...Naima Sebaai; Jean Lesage; Didier Vieau; Abdelilah Alaoui; Jean Paul Dupouy; Sylvie Deloof Dehydration, a classic homeostatic stressor in rats, leads to a series of well characterized endocrine responses including stimulation of the hypothalamo-pituitary-adrenal (HPA) axis. In this study...

... or staining procedures. In the sample studied, a large number of TH-IR perikarya were observed specifically in all subjects that had suffered from right-sided heart failure due to pulmonary hypertension, liver cirrhosis or dehydration. In all the above illnesses, increased production and secretion...

... that these transcription factors could play a role in the maintenance of VP and oxytocin gene transcription in response to dehydration. 8 8 2002 © 2002 S. Karger AG, Basel 2002 Copyright / Drug Dosage / Disclaimer Copyright: All rights reserved. No part of this publication may be translated into other...

... renin secretion. This, however, does not prove that HA is of any physiological importance for the regulation of renin secretion. Dehydration is a physiological stimulus of renin secretion and, therefore, we studied the possible role of hypothalamic histaminergic neurons in dehydration-induced renin...