Document Detail


Effect of antihypertensive therapy using enalapril or losartan on haemostatic markers in essential hypertension: a pilot prospective randomised double-blind parallel group trial.
MedLine Citation:
PMID:  11376827     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To test the hypothesis that the hypercoagulable state in hypertension is significantly altered by anti-hypertensive therapy, we conducted a pilot prospective randomised double-blind trial of 40 untreated hypertensive patients (30 males, mean age 59 years) who were treated with either enalapril (10-20 mg per day) or losartan (50-100 mg per day) for 8 weeks. Thrombogenicity was assessed by measurement of plasma fibrinogen, soluble P-selectin (an index of platelet activation), plasminogen activator inhibitor 1 (PAI-1, an index of fibrinolysis) and von Willebrand factor (an index of endothelial dysfunction). Baseline von Willebrand factor alone was significantly higher in untreated hypertensive patients compared to controls (P<0.001). Following 8 weeks treatment with enalapril (mean dose 17 mg/day) or losartan (mean dose 77 mg/day), there was a significant reduction in mean blood pressure from 169+/-11/94+/-8 mmHg (baseline) to 147+/-14/84+/-7 mmHg (post-treatment) (P<0.001). However, there were no statistically significant changes in the levels of haemostatic markers (von Willebrand factor, fibrinogen, s-Psel and PAI-1). Our pilot study confirms previous observations of endothelial dysfunction in hypertensives. However, plasma fibrinogen and indices of platelet activation, fibrinolysis or endothelial dysfunction were not significantly affected by antihypertensive treatment with enalapril or losartan, despite satisfactory blood pressure control.
Authors:
F L Li-Saw-Hee; D G Beevers; G Y Lip
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of cardiology     Volume:  78     ISSN:  0167-5273     ISO Abbreviation:  Int. J. Cardiol.     Publication Date:  2001 May 
Date Detail:
Created Date:  2001-05-29     Completed Date:  2001-07-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  241-6     Citation Subset:  IM    
Affiliation:
Haemostasis Thrombosis and Vascular Biology Unit, University Department of Medicine, City Hospital, B18 7QH, Birmingham, UK.
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MeSH Terms
Descriptor/Qualifier:
Angiotensin-Converting Enzyme Inhibitors / pharmacology*
Biological Markers
Cross-Sectional Studies
Double-Blind Method
Enalapril / pharmacology*
Female
Fibrinogen / metabolism
Hemostasis / drug effects*
Humans
Hypertension / blood,  drug therapy*
Losartan / pharmacology*
Male
Middle Aged
P-Selectin / blood
Pilot Projects
Plasminogen Inactivators / blood
Prospective Studies
Receptors, Angiotensin / antagonists & inhibitors*
Statistics, Nonparametric
von Willebrand Factor / metabolism
Chemical
Reg. No./Substance:
0/Angiotensin-Converting Enzyme Inhibitors; 0/Biological Markers; 0/P-Selectin; 0/Plasminogen Inactivators; 0/Receptors, Angiotensin; 0/von Willebrand Factor; 114798-26-4/Losartan; 75847-73-3/Enalapril; 9001-32-5/Fibrinogen

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


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