血管紧张素原基因的六种单核苷酸多态与原发性高血压的相关性

目的　研究血管紧张素原 (angiotensinogen,AGT)基因 6个位点的单核苷酸多态及其构成的单倍型与中国汉族人原发性高血压的相关性。方法　采用多重SNa Pshot反应 ,在 185例原发性高血压患者和185名健康对照者中 ,对 AGT基因启动子区域的 G- 2 17A、G- 15 2 A、A- 2 0 C、G- 6 A及第 2外显子的T174 M和 M2 35 T多态进行基因分型。结果　 6种单核苷酸多态的基因型分布及其等位基因频率在原发性高血压组和对照组中差异无显著性 (P>0 .0 5 )。单倍型分析提示由 - 15 2 A,- 2 0 C,- 6 A和 2 35 T等位基因构成的 H4单倍型在原发性高血压组中明显增加 ,与对照组相比差异有显著性 (P<0 .0 5 )。结论　AGT基因G- 15 2 A,A- 2 0 C,G- 6 A和 M2 35 T多态可能对中国汉族人原发性高血压的发病起了重要作用。

Relationship between six single nucleotide polymorphisms of angiotensinogen gene and essential hypertension

Objective To evaluate the relationship of six single nucleotide polymorphisms(SNPs) and their haplotypes of angiotensinogen(AGT) gene to essential hypertension(EH) in Chinese Han population. Methods The genotypes in 185 patients with EH and 185 healthy controls were determined by the method of ABI PRISM SNaPshot Multiplex Kit using six AGT gene polymorphisms at position -217(G/A),-152(G/A),-20(A/C) and -6(G/A) in the promoter region and T174M,M235T in exon 2. Results The distribution of AGT genotypes and alleles frequencies showed no significant difference between the group of EH and group of controls (P>0.05). However, haplotype analysis revealed that H4 haplotype frequency,which included -152A,-20C,-6A and 235T alleles, was significantly increased in the group of EH(P<0.05). Conclusion G-152A,A-20C,G-6A and M235T polymorphisms of AGT gene might play an important role in the occurrrence of EH in Chinese Han population.