四川北部地区肺癌病人GSTM1基因多态性分析

 【摘要】　目的　分析中国四川北部地区汉族肺癌人群谷胱苷肽硫转移酶M1（GSTM1）基因多态性。方法　采用聚合酶链反应（PCR）技术检测该地区125例肺癌患者GSTM1基因缺失频率，并与文献报道的其他地区人群及人种进行比较。结果　中国四川北部地区肺癌患者GSTM1纯合缺失基因型58.4 %（73／125），其中纯和缺失率女性为62.5 %（20／32），男性为56.9 %（53／93）；鳞状细胞癌56.1 %（32／57），腺癌54.8 %（17／31）。与国内外文献报道比较，中国四川北部地区肺癌患者GSTM1基因缺失频率略高于欧美，但仅与土耳其、巴西非裔美国人和印度北部人群差异有统计学意义（P＜0.05），与国内人群相近（P＞0.05）。结论　中国四川北部地区汉族肺癌人群GSTM1基因多态性未呈现显著的地域和人种特征。

Genetic polymorphism of GSTM1 to lung cancer patients in north Sichuan of China

Objective To analyze the genetic polymorphism of GSTM1 to lung cancer patients in north Sichuan of China and compare with race from other district.Methods PCR-based technique was used to detect the genotypes of GSTM1 in lung cancer patients.Results In local lung cancer patients,the frequency of homozygous deletions(null genotype) for GSTM1 was 58.4 % (73/125).Among the patients,the frequencys of null genotype for GSTM1 were 62.5 % (20/32) in female,56.9 % (53/93) in male,56.1% (32/57)in patients with squamous cell carcinoma and 54.8 % (17/31) in patients with adenocarcinoma,respectively.The frequency of deletions of GSTM1 in lung cancer patients from north Sichuan of China is slightly exceeding those of Europe and Americas (P ＜0.05) and similar to the domestic result (P ＞0.05).Conclusion The genetic polymorphism of GSTM1 to lung cancer patients in north Sichuan of China dosen' t show distinguished feature for this district and race.