Association between the low activity genotype of catechol-O-methyltransferase and myocardial infarction in a hypertensive population.

Abstract:

AIM:Estrogens regulate several biological processes involved in the pathogenesis of myocardial infarction. Catechol-O-methyltransferase (COMT) is a key enzyme in the degradation of estrogens. There is a functional polymorphism in the COMT gene (Val158Met), affecting the activity of the enzyme. We investigated if the low activity genotype of COMT is associated with an altered risk of myocardial infarction. METHODS AND RESULTS:In a prospectively followed hypertensive cohort we identified 174 patients who suffered a myocardial infarction during the study and compared them to 348 controls from the same cohort. The COMT polymorphism and serum levels of sex hormones were analysed. Patients homozygous for the low activity COMT genotype had a decreased risk of myocardial infarction compared to those with the high activity genotype, odds ratio 0.65 (95% CI 0.44-0.97, p=0.033 ). The protective effect of the low activity genotype was most evident among older patients (> 58 years of age), odds ratio 0.43 (95% CI 0.23-0.79, p=0.006 ). Serum levels of estradiol were increased ( p=0.006 ) in males with the low activity genotype. CONCLUSIONS:Our findings suggest that the low activity COMT genotype is protective against myocardial infarction. One may speculate that the altered estrogen status could be involved in this effect.

journal_name

Eur Heart J

journal_title

European heart journal

authors

Eriksson AL,Skrtic S,Niklason A,Hultén LM,Wiklund O,Hedner T,Ohlsson C

doi

10.1016/j.ehj.2003.12.026

subject

Has Abstract

pub_date

2004-03-01 00:00:00

pages

386-91

issue

5

eissn

0195-668X

issn

1522-9645

pii

S0195668X04000119

journal_volume

25

pub_type

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