نتایج جستجو برای: avp

تعداد نتایج: 2432  

Journal: :Journal of applied physiology 2003
Flavia M Paro Maria C Almeida Evelin C Carnio Luiz G S Branco

It has been reported that systemic injection of arginine vasopressin (AVP) induces a drop in body core temperature (T(c)), but little is known about the mechanisms involved. Because glutamate is an important excitatory neurotransmitter involved in a number of thermoregulatory actions, in the present study, we tested the hypothesis that glutamate plays a role in systemic AVP-induced hypothermia....

Journal: :Hormones and behavior 1999
J K Bester-Meredith L J Young C A Marler

Previous comparative studies have suggested that the distribution of arginine vasopressin (AVP) pathways within the brain is associated with species-typical patterns of social behavior. In the current study, male parental behavior and aggression were compared in two species of Peromyscus. As predicted based on other studies, male mice from a monogamous species, the California mouse Peromyscus c...

Journal: :American journal of physiology. Renal physiology 2011
Gail A Reif Tamio Yamaguchi Emily Nivens Hiroyuki Fujiki Cibele S Pinto Darren P Wallace

In autosomal dominant polycystic kidney disease (ADPKD), arginine vasopressin (AVP) accelerates cyst growth by stimulating cAMP-dependent ERK activity and epithelial cell proliferation and by promoting Cl(-)-dependent fluid secretion. Tolvaptan, a V2 receptor antagonist, inhibits the renal effects of AVP and slows cyst growth in PKD animals. Here, we determined the effect of graded concentratio...

Journal: :The Journal of clinical investigation 1973
F L Dunn T J Brennan A E Nelson G L Robertson

A sensitive and specific radioimmunoassay for plasma arginine vasopressin (AVP) has been used to study the effects of blood osmolality and volume in regulating AVP secretion in unanesthetized rats. Under basal conditions, plasma AVP and osmolality were relatively constant, averaging 2.3+/-0.9 (SD) pg/ml and 294+/-1.4 mosmol/kg, respectively. Fluid restriction, which increased osmolality and dec...

2016
Ramona Pais Juraj Rievaj Claire Meek Gayan De Costa Samanthie Jayamaha R Todd Alexander Frank Reimann Fiona Gribble

KEY POINTS Arginine vasopressin (AVP) stimulates the release of enteroendocrine L-cell derived hormones glucagon-like peptide-1 (GLP-1) and peptide YY (PYY) in vitro from mouse and human colons. This is mediated by the AVP receptor 1B, which is highly enriched in colonic L-cells and linked to the elevation of L-cell calcium and cAMP concentrations. By means of Ussing chambers, we show that AVP ...

Journal: :European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 2007
Susana Novella Ana Cristina Martínez Rosa María Pagán Medardo Hernández Albino García-Sacristán Angel González-Pinto José María González-Santos Sara Benedito

OBJECTIVE Recent studies have suggested that endogenous vasopressin (AVP) acts as a spasmogen during coronary artery bypass grafting (CABG). Given that AVP could induce vasospasm in the grafted vessel, we assessed the release of this peptide during and after CABG, and explored ways of counteracting its contractile effect on the internal mammary artery (IMA). METHODS Plasma levels of AVP were ...

Journal: :Histology and histopathology 1995
G Mazzochi L K Malendowicz V Meneghelli G Gottardo G G Nussdorfer

Arginine-vasopressin (AVP) markedly increased basal aldosterone (ALDO) secretion by dispersed zona-glomerulosa (ZG) cells, and its effect was selectively reversed by V1-receptor antagonists (AVP-A1). Corticosterone (B) production by dispersed zona fasciculata (ZF) cells was not affected. The bolus intraperitoneal (i.p.) administration of AVP acutely raised the plasma concentrations of both ALDO...

Journal: :The Journal of clinical investigation 1980
D A Hall D M Varney

Medullary thick ascending limbs of Henle's loop of the Swiss-Webster mouse were perfused in vitro with an isotonic perfusate and a Ringer's bathing medium. In five studies, addition of a supramaximal concentration of synthetic arginine vasopressin (AVP) to the bathing medium resulted in an increase in electrical potential difference (PD) from 5.0 +/- 1.5 mV, lumen positive, to 10.7 +/- 1.4 mV (...

Journal: :Brain research 2000
M Jác A Kiss A Sumová H Illnerová D Jezová

Daily rhythm of arginine vasopressin (AVP) mRNA levels in the suprachiasmatic nucleus (SCN) of rats maintained under a short, LD 8:16 photoperiod differed from that of rats maintained under a long, LD 16:8 photoperiod: under the short photoperiod the morning AVP rise occurred significantly later than under the long one. Daily profiles of AVP mRNA in the supraoptic and paraventricular nuclei wer...

Journal: :American journal of physiology. Renal physiology 2014
Nicholas G Moss Tayler E Kopple William J Arendshorst

Renal blood flow (RBF) responses to arginine vasopressin (AVP) were tested in anesthetized wild-type (WT) and CD38(-/-) mice that lack the major calcium-mobilizing second messenger cyclic ADP ribose. AVP (3-25 ng) injected intravenously produced dose-dependent decreases in RBF, reaching a maximum of 25 ± 2% below basal RBF in WT and 27 ± 2% in CD38(-/-) mice with 25 ng of AVP. Renal vascular re...

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