脑利钠肽基因型和生活习惯与高血压关系的病例对照研究

目的研究脑利钠肽（BNP）基因T-381C单核苷酸多态性和生活习惯与原发性高血压的关系。方法用病例-对照研究设计,选取高血压病例（高血压组）和与之年龄、性别匹配的按1：1配对的健康对照各796例（对照组）,运用PCR-限制片段多态（RFLP）技术检测BNP基因启动子区第381位点的T/C基因多态性,并比较不同基因型、生活习惯与高血压发病风险的关系。结果两组人群BNP基因T-381C等位基因的分布差异无显著性（χ~2=2.29,P=0.13）;高血压组CC基因型频率明显高于对照组,TC基因型频率低于对照组,三种基因型分布比较差异有统计学意义（χ~2=48.81,P〈0.05）。与携带TT或TC基因型者比较,携带CC基因型个体患高血压的风险增加（OR=1.98,95%CI 1.39～2.38）。吸烟显著增加了高血压风险（OR=2.30,95%CI1.70～2.91）,经常嗜酒（≥2次/周）增加高血压风险,OR处于临界值（OR=1.53,95%CI 1.19～1.89）,高盐饮食的作用较明显（OR=1.97,95%CI 1.48～2.31）,同时有吸烟、饮酒与高盐饮食习惯且携带CC基因型者发生高血压的风险增高,体育锻炼是保护性因素。结论原发性高血压与BNP基因T-381C多态性、生活习惯及它们之间的相互作用有关。

Relationship of brain natriuretic peptide genotypes and life style with susceptibility to essential hypertension: a case-control study

Objective To evaluate the association of brain natriuretic peptide(BNP) gene T-381C polymorphism and life style with the risk of essential hypertension(EH).Methods A case-control study was carried out.The BNP gene T-381C polymorphism was determined by PCR-restriction fragment length polymorphism(RFLP) among 796 patients with EH and 796 age- and sex-matched controls.The association between the genetic polymorphism and the risk of EH was examined by a multivariate analysis.Results The C allele frequency of BN...