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  • Title: G-455A polymorphism of beta-fibrinogen gene and the risk of premature myocardial infarction in Greece.
    Author: Rallidis LS, Gialeraki A, Fountoulaki K, Politou M, Sourides V, Travlou A, Lekakis I, Kremastinos DT.
    Journal: Thromb Res; 2010 Jan; 125(1):34-7. PubMed ID: 19409601.
    Abstract:
    INTRODUCTION: There are limited and controversial data regarding the impact of G-455A polymorphism of beta-fibrinogen gene in the pathogenesis of premature myocardial infarction (MI). We examined whether the G-455A polymorphism of beta-fibrinogen gene is associated with the development of MI< or =35 years of age. METHODS: We recruited 181 consecutive patients who had survived their first acute MI< or =35 years of age (mean age=32.2+/-3.4 years). The control group consisted of 129 healthy individuals matched with cases for age and sex, without a family history of premature coronary heart disease. G-455A polymorphism of beta-fibrinogen was tested with polymerase chain reaction and reverse hybridization. RESULTS: There was a higher prevalence of carriers of the A allele (GA+AA genotype) in controls than in patients (odds ratio [OR] 0.57, 95% confidence interval [CI] 0.36 to 0.91, p=0.02). G-455A polymorphism of beta-fibrinogen gene was associated with lower risk for acute MI (OR 0.46, 95% CI 0.25 to 0.83, p=0.01) after adjusting for major cardiovascular risk factors. Fibrinogen levels were higher in patients compared to controls [332 (292-385) vs. 311 (262-373) mg/dL, p=0.01], but the adjusted for classical risk factors fibrinogen levels did not differ (OR 1.003, 95% CI 0.99 to 1.01, p=0.37). Patients possessing the A allele did not differ in their fibrinogen and lipid levels compared to patients with the -455GG genotype. CONCLUSIONS: Our data indicate that the presence of the G-455A polymorphism of beta-fibrinogen gene has a "protective effect" against the development of non-fatal acute MI< or =35 years of age in Greece.
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