Document Detail


The effect of prolonged infusion and withdrawal of angiotensin II in the spontaneously hypertensive rat.
MedLine Citation:
PMID:  3756627     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In spontaneously hypertensive rats (SHR) and their normotensive Wistar-Kyoto controls (WKY), prolonged intravenous administration of angiotensin II (AII, 0.2 microgram X kg-1 X min-1 for 3h) resulted in similar increases in arterial blood pressure. Heart rate decreased in WKY and increased in SHR. At the end of the infusion, blood pressure dropped substantially in SHR, but not in WKY: at 5 h after AII withdrawal, blood pressure in SHR had fallen from a control value of 172 +/- 3.3 to 146 +/- 3.9 mmHg (p less than 0.01), whereas pressure in WKY had fallen from 116 +/- 3.0 to 107 +/- 4.2 mmHg (statistically non significant). Thus, pressure at 5 h after AII withdrawal was still substantially higher (p less than 0.01) in the SHR than in the WKY. The results demonstrate that the fall in blood pressure following withdrawal of a prolonged infusion of AII in SHR is much less than that reported to occur following withdrawal of a prolonged infusion of vasopressin (AVP) in SHR.
Authors:
E K Chiu; J R McNeill
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Canadian journal of physiology and pharmacology     Volume:  64     ISSN:  0008-4212     ISO Abbreviation:  Can. J. Physiol. Pharmacol.     Publication Date:  1986 Jun 
Date Detail:
Created Date:  1986-11-10     Completed Date:  1986-11-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372712     Medline TA:  Can J Physiol Pharmacol     Country:  CANADA    
Other Details:
Languages:  eng     Pagination:  748-50     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Angiotensin II / pharmacology*
Animals
Blood Pressure / drug effects
Heart Rate / drug effects
Hypertension / physiopathology*
Male
Rats
Rats, Inbred SHR
Rats, Inbred WKY
Substance Withdrawal Syndrome / physiopathology*
Chemical
Reg. No./Substance:
11128-99-7/Angiotensin II

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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