摘要:
目的:探讨新疆地区汉、维吾尔族心房颤动患者血管紧张素原基因(AGT)G-6A 的突变位点定位和基因频率的异同。方法选取2013年2月-2014年8月新疆医科大学第一附属医院综合心脏内科收住的汉族心房颤动患者(汉族房颤组)100例、汉族非心房颤动患者(汉族对照组)100例、维吾尔族心房颤动患者(维吾尔族房颤组)100例及维吾尔族非心房颤动患者(维吾尔族对照组)100例、对4组患者基因启动子区域的 G-6A 位点进行PCR 扩增反应,经测序验证位点的多态性,并比较其差异性。结果4组患者年龄、性别、体质指数(BMI)、血清甘油三酯、总胆固醇等差异无统计学意义(P <0.05)。AGT G-6A 基因位点的测序结果显示其存在3种基因型:GG 型、GA 型、AA 型。AGT G-6A 基因型 GG、GA、AA 在汉族房颤及非房颤人群中分别有5例(0.025)、72例。%Objective To investigate the difference of angiotensinogen (AGT)gene frequency and gene mu-tation location in Han and Uygur atrial fibrillation (AF)population of Xinjiang.Methods Select 100 cases Chinese Han patients with atrial fibrillation (AF group),100 cases Chinese Han patients with non-atrial fi-brillation (control group),100 cases Chinese Uygur patients with atrial fibrillation (AF group),100 cases Chinese Uygur patients with non-atrial fibrillation (control group),admitted by the First Affiliated Hospi-tal Heart Center of Xinjiang Medical University from February 2013 to August 2014.Results There was no statistically significant difference in the two groups of patients′age,gender,BMI,serum triglyceride, total cholesterol.The sequencing results of AGT G-6A loci show that the existence of three genotypes:GG,GA,AA genotype.Three genotypes in the Han population were 5 cases (0.025),72 cases (0.360), 123 cases (0.615),Allele A and G frequencies were 0.795,0.205;Three genotypes in the Uygur popula-tion were 27 cases (0.135),77 cases (0.385),96 cases (0.480),Allele A and G frequencies were 0.672, 0.328;There was statistically significant difference in the Allele gene frequency of Han and Uygur people (χ2 =14.742,P <0.001),also in the genotype frequency (χ2 = 18.622,P <0.001).Samples in Hardy-Weinberg equilibrium law test,which suggests the samples were from the same Mendelian groups.Accord-ing to the comparison of the dominant pattern AA and GA+GG (OR =0.932,95% CI :0.625~1.390)and the recessive pattern GG and GA+AA (OR =0.873,95% CI :0.423~1.800).Conclusion Genotype AA and GA were the relatively common genotype in AGT G-6A loci of Xinjiang Han and Uygur population, The allele frequency of A was higher than allele G,genotype AA was not a risk factor for atrial fibrillation.