[Association of CMA1 gene tag single nucleotide polymorphisms with essential hypertension in Yi population from Yunnan].

ABSTRACT

OBJECTIVE: To assess the association of tag single nucleotide polymorphisms (tag SNPs) of chymase gene (CMA1) with essential hypertension in Yi population from Yunnan, China. METHODS: A case-control study was carried out. Four tag SNPs(rs1956921, rs1800876, rs5244 and rs1885108) were genotyped in 303 patients with essential hypertension and 312 healthy controls using polymerase chain reaction - restriction fragment length polymorphism(PCR-RFLP) method. RESULTS: No significant difference in genotypic and allelic distributions of the four polymorphisms was detected between the two groups(P>0.05), and the same results existed in the females. The frequencies of rs1956921 C allele and a C-T haplotype constructed with rs1956921 and rs5244 were greater in male patients compared with male controls(P<0.01). CONCLUSION: The rs1956921 C allele of the CMA1 gene and the C-T haplotype constructed with rs1956921 and rs5244 may be risk factors for essential hypertension in ethnic Yi males from Yunnan.