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Influence of chronic hormone replacement therapy on left ventricular mass and serum-ACE activity.

Journal article
Authors Karin Manhem
Bachar Ghanoum
Magnus C Johansson
Ian Milsom
Helena Gustafsson
Published in Blood pressure
Volume 19
Issue 5
Pages 295-300
ISSN 1651-1999
Publication year 2010
Published at Institute of Medicine, Department of Emergeny and Cardiovascular Medicine
Institute of Clinical Sciences, Department of Obstetrics and Gynecology
Pages 295-300
Language en
Links dx.doi.org/10.3109/08037051.2010.48...
Subject categories Medical and Health Sciences

Abstract

AIMS: The aim of this investigation was to study the effects of hormone replacement therapy (HRT) on left ventricular mass (LVM) and serum-angiotensin-converting enzyme (ACE) activity (S-ACE) in well controlled hypertensive postmenopausal women. METHODS: In this prospective, randomized, crossover, double-blind trial we studied 20 well controlled hypertensive postmenopausal women who received 6 months of HRT and 6 months of placebo on top of antihypertensive treatment. Two-dimensional M-mode, office blood pressure, 24-h ambulatory blood pressure (ABPM), S-estradiol and S-ACE activity were investigated at baseline, after 6 and 12 months. RESULTS: LVM was significantly influenced by HRT (analysis of variance, ANOVA, p<0.01). However, the order in randomization of HRT and placebo had an impact on the analysis of LVM reduction (baseline - HRT - placebo: ns; baseline - placebo - HRT: p<0.01 ANOVA). Only the women lacking blockade of the renin-angiotensin-aldosterone system (RAAS) as antihypertensive treatment (n=10) experienced a reduction in LVM and a tendency of decreased S-ACE activity in response to HRT compared with baseline (p< 0.05 and p= 0.06 respectively). CONCLUSIONS: Six months of HRT resulted in significant reduction of LVM without any change in ABPM. HRT may reduce LVM through interaction with the RAAS, since hypertensive women without RAAS blockade exhibited an effect of HRT on LVM and S-ACE activity, which was not seen in women on RAAS blockade.

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