Key result
The -344T/C polymorphism in the aldosterone synthase gene was not significantly associated with non-familial atrial fibrillation in hypertensive patients (C allele 32.3% vs 29.4%, p=0.197).
Why the study?
Is the -344T/C polymorphism in the aldosterone synthase gene associated with non-familial atrial fibrillation in Chinese patients with hypertension?
Case-Control (n=620)
Is the -344T/C polymorphism in the aldosterone synthase gene associated with non-familial atrial fibrillation in Chinese patients with hypertension?
The -344T/C polymorphism in the aldosterone synthase gene is not directly associated with atrial fibrillation in Chinese hypertensive patients, but may contribute to atrial remodeling.
INTRODUCTION: Aldosterone plays an important role in the pathogenesis of non-familial atrial fibrillation (AF). We tested the hypothesis that the -344T/C polymorphism in the aldosterone synthase gene may be associated with non-familial AF in Chinese patients with hypertension. MATERIALS AND METHODS: We performed a 1:1 paired case-control study in 310 cases of hypertension with AF and same number matched controls. The -344T/C polymorphism was determined with polymerase chain reaction-restriction fragment length polymorphism. RESULTS: The distribution of the CYP11B2 genotypes (TT, TC and CC) was 41.9%, 50.6%, and 7.4% in AF patients, which was not different from controls (48.4%, 44.5%, and 7.1%, χ(2) = 2.675, p = 0.263). The difference between the C allele (32.3% vs. 29.4%) was also not significant between two groups (χ(2) = 1.661, p = 0.197). Logistic regression analysis showed that LAD and LVEDD (both p < 0.001), rather than the C allele of the CYP11B2 gene (p= 0.107) were significant predictors for AF. The LAD of C allele carriers is significantly larger than that of non-C allele carriers (p = 0.009). CONCLUSIONS: Our results indicate that the -344T/C polymorphism in the aldostrone synthase gene is not associated with AF but it might be associated with atrial remodelling in hypertensives.
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Sun et al. (2011) conducted a case-control in Hypertension with non-familial atrial fibrillation (n=620). -344T/C polymorphism in the aldosterone synthase gene (CYP11B2) vs. Matched controls without atrial fibrillation was evaluated on Non-familial atrial fibrillation (C allele frequency) (p=0.197). The -344T/C polymorphism in the aldosterone synthase gene was not significantly associated with non-familial atrial fibrillation in hypertensive patients (C allele 32.3% vs 29.4%, p=0.197).
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