Role of the angiotensin II type 2 receptor gene (+1675G/A) polymorphism on left ventricular hypertrophy and geometry in treated hypertensive patients.

Abstract:

OBJECTIVE:A genetic polymorphism in the angiotensin II type 2 receptor (AGTR2 +1675G/A) has been associated with left ventricular hypertrophy (LVH). We tested whether this polymorphism affects LVH and left ventricular geometry parameters in patients with essential hypertension and cardiovascular disease who are treated according to guidelines. METHODS:We analyzed a cohort of 208 women and 1030 men with essential hypertension, associated cardiovascular disease and left ventricular ejection fractions 40% or more. Previous cardiac diseases included coronary heart disease (81%) and myocardial infarction (MI; 52%). Ten parameters of left ventricular mass, geometry and function were determined by echocardiography. Genotyping was performed by PCR. Due to the X chromosomal location of AGTR2, genotype-phenotype analysis was separated for women and men. Statistical analysis was performed by univariate and multivariate analysis accounting for confounding factors. RESULTS:The mean age was 58.4 +/- 10 years. In the overall cohort, mean left ventricular mass index was 54 +/- 23.6 g/h without significant differences between patients with and without MI. The frequency of LVH (49% overall) was also similar in patients with or without MI. In men, AGTR2 +1675G/A had no influence on echocardiographic parameters. Similar findings were obtained in women, with the exception that the thickness of the interventricular septum was significantly lower in A allele carriers (-11%) in both crude (P = 0.002) and multivariate analysis (P = 0.044). CONCLUSION:In treated patients with arterial hypertension, cardiac disease and preserved left ventricular systolic function AGTR2 (+1675G/A) exhibits only a minor effect on left ventricular geometry in women and none in men.

journal_name

J Hypertens

journal_title

Journal of hypertension

authors

Huber M,Völler H,Jakob S,Reibis R,Do V,Bolbrinker J,Zergibel I,Schmieder RE,Treszl A,Wegscheider K,Kreutz R

doi

10.1097/HJH.0b013e32833aa356

subject

Has Abstract

pub_date

2010-06-01 00:00:00

pages

1221-9

issue

6

eissn

0263-6352

issn

1473-5598

pii

00004872-201006000-00016

journal_volume

28

pub_type

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