Document Detail


Pathogenesis of one-kidney, one-clip hypertension in rats after renal denervation.
MedLine Citation:
PMID:  6377927     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study examines the role of the renal nerves in the chronic and early developmental stages of one-kidney, one-clip (1K-1C) Goldblatt hypertension. Groups of uninephrectomized Sprague-Dawley rats underwent renal artery constriction with a clip of an internal diameter of 0.23 mm (groups 1 and 3) or 0.40 mm (groups 2 and 4) to produce severe or moderate hypertension. Two weeks later, groups 1 and 2 were subjected to renal denervation and groups 3 and 4 were denervated 6 and 7 wk after clipping, respectively. In all four groups, hypertension remained unchanged during the subsequent 2 wk after denervation. To study further the effects of renal denervation during the early onset of hypertension, groups 5, 6, and 7 received the smaller (0.23 mm) clip after uninephrectomy. Groups 5 and 6 were renal denervated immediately before clipping; group 7 was not denervated. In groups 6 and 7 the renin-angiotensin system was blocked with a continuous infusion of the converting-enzyme inhibitor captopril for 24 h before and 15 days after clipping. In group 5, renal denervation did not prevent a prompt and severe rise in the systolic blood pressure. In groups 6 and 7, infusion of captopril prevented the hypertension only during the first 4 days after clipping; at no time was there a difference in the systolic blood pressure curves of groups 6 and 7 during or after captopril infusion. These data demonstrate that regardless of the severity and duration of hypertension, renal denervation failed to attenuate either the development or the maintenance of 1K-1C Goldblatt hypertension in the rat. Thus the present results fail to provide support for the concept that the renal nerves modulate the hypertension in this experimental model.
Authors:
D Villarreal; R H Freeman; J O Davis; G Garoutte; W D Sweet
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of physiology     Volume:  247     ISSN:  0002-9513     ISO Abbreviation:  Am. J. Physiol.     Publication Date:  1984 Jul 
Date Detail:
Created Date:  1984-08-17     Completed Date:  1984-08-17     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0370511     Medline TA:  Am J Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  H61-6     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Pressure
Captopril / pharmacology
Denervation
Hypertension, Renovascular / etiology*
Kidney / innervation*
Male
Rats
Rats, Inbred Strains
Renin-Angiotensin System / drug effects
Time Factors
Chemical
Reg. No./Substance:
62571-86-2/Captopril

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


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