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Gene Polymorphisms of the Renin-Angiotensin System and Early Development of Hypertension
A case-control association study was conducted to investigate a possible involvement of polymorphisms of three renin-angiotensin system genes: ACE (I/D and T-3892C), AGT ( M235T and T174M), and AT1R ( A1166C) in the early development of hypertension. One hundred nineteen hypertensive and 125 normote...
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Published in: | American journal of hypertension 2006-08, Vol.19 (8), p.837-842 |
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Main Authors: | , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | A case-control association study was conducted to investigate a possible involvement of polymorphisms of three renin-angiotensin system genes:
ACE (I/D and
T-3892C),
AGT (
M235T and
T174M), and
AT1R (
A1166C) in the early development of hypertension.
One hundred nineteen hypertensive and 125 normotensive participants aged 18 to 40 years were selected from a broader sample representative of the general population of Croatia. The selection criteria for hypertensive cases were systolic blood pressure (BP) higher than 140 mm Hg or diastolic BP higher than 90 mm Hg and a history of hypertension according to patient interview.
Among the polymorphisms investigated, only those located on the
ACE gene were associated with hypertension. For
ACE I/D, the odds ratio for hypertension of
DD versus
II homozygote individuals was 2.50 (95% confidence interval [CI] 1.19–5.25) and for
ACE T-3892C, the odds ratio of
CC versus
TT individuals was 2.32 (95% CI 1.05–5.10). Both polymorphisms of the
ACE gene were in tight linkage disequilibrium. Of the investigated risk factors for hypertension, only body mass index (BMI) showed an influence on the early development of hypertension, acting independently of the
ACE polymorphism. Their additive effect gives rise to 86% of hypertensives in subjects having both the
DD genotype and BMI ≥30 kg/m
2.
The present study provides evidence of the association of the
ACE gene polymorphisms and premature hypertension. In addition, BMI proved to be another important predictor of the disorder acting independently of the
ACE gene. |
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ISSN: | 0895-7061 1879-1905 1941-7225 |
DOI: | 10.1016/j.amjhyper.2006.01.004 |