Abstract
This haplotype-based case-control study investigated whether the aldosterone synthase gene (CYP11B2) might be implicated in the pathogenesis of essential hypertension in Yi (226 individuals) and Hani (296 individuals) minorities of China. Four tag SNPs (rs4536, rs4545, rs3097, and rs3802230) and the K173R polymorphism were genotyped using the PCR-RFLP method. In the Hani minority, rs4536 was significantly associated with hypertension, after Bonferroni correction. H9 AGGC constructed by tag SNPs was significantly higher in hypertensives than in controls (P=0.001). Further, we observed that haplotype AGGC remained significantly associated with male hypertension after adjustment for covariates (OR=3.76, P=0.002). In the Yi minority, it was found that the CYP11B2 gene was not significantly associated with hypertension. These results indicated that haplotype AGGC conferred an increased risk for hypertension in the Hani minority male. In addition, CYP11B2 may not be associated with hypertension in the Yi minority of China.
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