内皮细胞性一氧化氮合酶基因可变性重复序列多态性与脑梗死的关系

目的　探讨内皮细胞性一氧化氮合酶 (eNOS)基因内含子 4可变性重复序列 (VNTR)的多态性与脑梗死 (CI)的关系。方法　应用聚合酶链反应 (PCR)技术 ,检测 15 2例CI患者的基因型 ,并与对照组比较。应用多元回归分析进行风险因素独立性分析。结果　CI组eNOS基因ab基因型的频率 (2 2 .36 % )明显高于对照组 (12 .2 8% ) ,a等位基因的频率 (12 .5 % )也明显高于对照组 (7.0 % ) ,差异均有显著性 (均P <0 0 5 )。ab基因型较bb基因型对CI的OR为 2 .0 5 (P <0 0 5 ) ,在用多元回归分析校正其他危险因素后OR为 1.98(P <0 0 5 ) ;CI组患者患高血压、高血脂、糖尿病及吸烟的比例较对照组为高 (均P <0 0 1) ,CI组患者年龄也较对照组高 (P <0 0 5 )。结论　eNOS基因ab基因型与CI有相关性 ,等位基因a可能是CI的独立危险因素。

Association between variable number of tandem repeat polymorphism of endothelial nitric oxide synthase gene and cerebral infarction

Objective To investigate the association between variable number of tandem repeat(VNTR) polymorphism of endothelial nitric oxide synthase(eNOS) gene and cerebral infarction(CI).Methods The genotypes of 152 patients with CI were detected by polymerase chain reaction(PCR) and compared with control group. Multiple regression analysis was performed to assess the independent roles of the polymorphism of eNOS and other risk factors.Results The ab genotype distribution frequency of eNOS gene in CI group(22.36%) was higher than that in control group(12.28%), and a allele frequency of eNOS gene in CI group(12.5%) was also higher than that in control group(7.0%). Both differences between CI group and control group were significant(all P<0.05). The OR of ab genotype to CI was 2.05( P<0.05). The OR was 1.98 after other risk factors were corrected by multiple regression analysis( P<0.05). The ratios of hypertension, hyperlipidemia,diabetes,and smoker in CI group were considerably higher than those in control group(all P<0.01).The age in CI group was higher than that in control group too( P<0.05).Conclusion ab genotype of eNOS is correlated with CI. The eNOS a allele may be an independent risk factor of CI.