血管紧张素转换酶基因插入/缺失多态性在人群中的分布及其与原发性高血压的关系

目的　研究血管紧张素转换酶 (angiotensin converting enzyme,ACE)基因 I/ D多态性在人群中的分布特征及其与原发性高血压的关系。方法　应用 PCR方法对 2 966名开滦矿务局职工进行 ACEI/ D基因型检测 ,并分析比较。结果　研究人群中 II、ID、DD基因型分布频率分别为 41.5%、3 8.4%、2 0 .1% ,I、D等位基因分布频率分别为 60 .7%和 3 9.3 %。ACE DD基因型在高血压组 (13 0 8例 )和对照组(1658名 )的频率分别为 18.9%和 2 1.0 % ,差异无显著性 (P>0 .0 5) ,按年龄及性别分层后差异也无显著性(P>0 .0 5)。DD基因型及 D等位基因分布频率有随年龄的增长而下降的趋势 (P<0 .0 0 1)。结论　 ACE I/D多态性与原发性高血压无关 ,基因型及等位基因的分布因年龄不同而不同 ,并提示具有 DD基因型特征的人群早期死亡危险的增加

The distribution of angiotensin converting enzyme gene I/D polymorphism and its relationship with essential hypertension

Objective To observe the distribution character o f angiotensin converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism in C hinese population and its relationship with essential hypertension. Meth ods Polymerase chain reaction (PCR) technique was us ed to detect the angiotensin converting enzyme gene I/D polymorphism in 2966 su bjects of Kailuan Coal Mine, and further restriction analysis was performed. Resu lts The frequencies of ACE II, ID, DD genotypes in total study popul ati on were 41.5%, 38.4%, 20.1%, respectively. The DD genotypes in hypertensive grou p and that in control group were 18.9% and 21.0%, respectively. There was no sig nificant differen ce between hypertensive group and control group (P>0.05). The same result w as seen after stratification by age and gender in each group, respectively(P> 0.05) . The DD genotype and D allele showed a tendency to decrease with the increase of age (P<0.001). Conclusion The above results suggested that essenti al hypertension was not associated with ACE I/D polymorphism. The distributions of ACE genotype and allele varied with age, and the subjects with the character of DD genotype were at higher risk of early death.