Document Detail


Dissociation of the prostaglandin and renin angiotensin systems during captopril therapy for chronic congestive heart failure secondary to coronary artery disease.
MedLine Citation:
PMID:  3314460     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Neurohumoral systems are activated as compensatory mechanisms in congestive heart failure (CHF). A close correlation has been reported between the renin angiotensin and prostaglandin systems in CHF. Furthermore, serum sodium concentration provided an excellent index of hormonal status. In this study, these relations were examined after acute and chronic blockade of renin angiotensin system with captopril. Eight patients with advanced CHF (New York Heart Association III or IV) were studied. Before captopril treatment, all hormone levels were elevated. Mean plasma renin activity was 24 +/- 7 ng Al/ml/hour, angiotensin concentration was 221 +/- 11 pg/ml and aldosterone concentration was 82 +/- 17 pg/ml. Plasma PGE2 metabolite was 1,425 +/- 321 pg/ml. A close correlation was observed between plasma angiotensin II and PGE2 metabolite levels (r = 0.7); inverse correlations existed between serum sodium concentration and PGE2 metabolite levels (r = -0.9) and with plasma renin activity (r = -0.6). Captopril therapy reduced the plasma angiotensin II level to 38 +/- 6 pg/ml and aldosterone concentration to 15 +/- 3 pg/ml, but did not affect plasma renin activity (31 +/- 10 ng Al/ml/hour) when measured in 1 week. Paradoxically, PGE2-metabolite levels increased further (to 3,031 +/- 346 pg/ml) despite blockade of the renin angiotensin system. Serum sodium concentration no longer correlated with hormone levels. These effects were sustained at 2 months of follow-up. Thus, captopril caused a dissociation between the renin angiotensin system and prostaglandin. The activation of prostaglandin is probably due to captopril's effect on prostaglandin biosynthesis and may contribute to captopril's sustained efficacy in CHF.
Authors:
V J Dzau; S L Swartz
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The American journal of cardiology     Volume:  60     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1987 Nov 
Date Detail:
Created Date:  1987-12-17     Completed Date:  1987-12-17     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1101-5     Citation Subset:  AIM; IM    
Affiliation:
Division of Vascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Captopril / therapeutic use*
Coronary Disease / complications*
Dinoprostone
Heart Failure / blood,  drug therapy*,  etiology
Humans
Male
Middle Aged
Prostaglandins E / blood*
Renin-Angiotensin System / drug effects*
Grant Support
ID/Acronym/Agency:
HL19259/HL/NHLBI NIH HHS; HL35610/HL/NHLBI NIH HHS; HL35792/HL/NHLBI NIH HHS
Chemical
Reg. No./Substance:
0/Prostaglandins E; 363-24-6/Dinoprostone; 62571-86-2/Captopril

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


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