Medical College of Wisconsin
CTSICores SearchResearch InformaticsREDCap

Vasopressin response to haemorrhage in rats: effect of hypoxia and water restriction. Clin Exp Pharmacol Physiol 1991 Oct;18(10):725-9

Date

10/01/1991

Pubmed ID

1764817

DOI

10.1111/j.1440-1681.1991.tb01387.x

Scopus ID

2-s2.0-0026341795   3 Citations

Abstract

1. The aim of the present study was to determine the effect of water restriction and/or hypoxia on the vasopressin response to haemorrhage in conscious rats. 2. Male, Long-Evans rats (n = 39) were prepared with chronically indwelling femoral artery and vein catheters and exposed to 24 h of one of the following: normoxia with ad lib drinking water (N + W); normoxia with water restriction (N - W); hypoxia with ad lib drinking water (H + W); and hypoxia with water restriction (H - W). At the end of 24 h, a 15 mL/kg arterial haemorrhage was performed. 3. Water restricted rats had elevated pre-haemorrhage vasopressin levels. Haemorrhage induced an increase in vasopressin in all groups. Water restriction (N - W) or hypoxia (H + W) each augmented the vasopressin response to haemorrhage. However, the combination of hypoxia and water restriction (H - W) failed to augment the vasopressin response to haemorrhage as compared to normoxic, water replete (N + W) rats. 4. Hypoxia or water restriction per se augment the vasopressin response to haemorrhage. This augmented vasopressin response to haemorrhage is not maintained when hypoxia and water restriction are combined.

Author List

Raff H, Rossing MH, Doepker SK, Griffen SC, Jankowski BM

Author

Hershel Raff PhD Professor in the Medicine department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Animals
Blood Pressure
Hemorrhage
Hypoxia
Male
Rats
Rats, Inbred Strains
Vasopressins
Water Deprivation
jenkins-FCD Prod-484 8aa07fc50b7f6d102f3dda2f4c7056ff84294d1d