Influences of Angiotensin I-Converting Enzyme and Endothelial Nitric Oxide Synthase Gene Polymorphisms on Hepatocellular Carcinoma Risks in China
首发时间:2013-01-18
Abstract:Aims: Growing evidences suggested that angiotensin-converting enzyme (ACE) gene and endothelial nitric oxide synthase (eNOS) gene have been associated with the risk in a wide range of cancers. The objective of this study was to examine whether two DNA polymorphisms at the ACE insertion/deletion (I/D) and NOS intron 4 variable number of tandem repeats (4a/4b) have been linked with the risk of developing hepatocellular carcinoma (HCC) in a Chinese population. Methods: Polymorphisms of ACE I/D and eNOS 4a/4b were genotyped in 293 HCC patients and 384 healthy control subjects using the polymerase chain reaction (PCR). Results: Frequencies of D allele and DD genotype in ACE gene of HCC patients were significantly different from that in healthy controls. However, no differences were observed in eNOS 4a/4b genotype and allele frequencies between the HCC and controls. Conclusions: These findings indicate that the ACE I/D polymorphism may play a role in HCC progression.
keywords: Angiotensin-converting enzyme gene endothelial nitric oxide synthase gene hepatocellular carcinoma
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血管紧张素转换酶及内皮型一氧化氮合酶基因多态性与中国汉族人群肝细胞癌相关性研究
摘要:目的:基于HCC的遗传研究现状和人类基因组数据库中血管紧张素转换酶(ACE)基因和内皮型一氧化氮合酶(eNOS)基因相关资料,通过比较健康群体和HCC群体在ACE(I/D)和eNOS(4a/4b)特异性片段的基因型和等位基因频率,研究其与肝细胞癌的关系,发现HCC的遗传易感基因。方法:(1)根据基因组数据库资料设计并合成特异性引物。(2)随机选取中国汉族HCC患者293例及体检健康者384例作对照,抽取外周静脉血,提取DNA。(3)基因组DNA进行聚合酶链式反应(PCR)的方法检测。(4)基因型和基因频率采用基因直接计数法计算,各组间基因型及等位基因频率比较采用SPSS17.0软件的卡方检验(χ2)进行分析。结果:ACE的D/D基因型在HCC组出现例数百分比低于对照组,卡方检验(χ2)P<0.01,组间有明显差异;D等位基因在HCC组出现频率低于对照组,P=0.003,有统计学意义。eNOS的基因型和等位基因频率比较无统计学意义。结论:ACE基因可能与肝细胞癌易感性负相关,会减小肝细胞癌的遗传易感性,可作为肝细胞癌易感性的一个判断指标。
关键词: 肝细胞癌 血管紧张素转换酶 内皮细胞固有型一氧化氮合酶
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血管紧张素转换酶及内皮型一氧化氮合酶基因多态性与中国汉族人群肝细胞癌相关性研究
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