有机氯农药残留及GSTM1基因与女性乳腺癌关系

目的研究血清中有机氯农药残留及谷胱甘肽转移酶M1(GSTM1)基因多态性与女性乳腺癌患病风险的关系。方法运用1∶1配比病例对照研究方法,自2006年9月-2007年10月收集女性乳腺癌病例及对照共70对,采用气相色谱法检测血清中有机氯农药残留,用聚合酶链反应(PCR)检测GSTM1基因多态性。结果2型交互作用模型分析结果显示,单独暴露于滴滴涕(DDT)高残留的OR值为3.859,95%CI=1.195～12.466,单独GSTM1缺失基因型的OR值为1.343,95%CI=0.355～5.075,两因素共同作用的OR值为5.557,95%CI=1.633～18.903,r值为1.237,提示GSTM1缺失基因型对血清DDT残留效应有放大作用;单独暴露于六六六(HCH)高残留的OR值为2.731,95%CI=0.841～8.869,单独GSTM1缺失基因型的OR值为1.483,95%CI=0.478～4.603,两因素共同作用的OR值为3.866,95%CI=1.178～12.682,r值为1.379,提示GSTM1缺失基因型对血清HCH残留效应有放大作用。结论GSTM1基因多态性与环境危险因素DDT、HCH暴露在乳腺癌发生中存在一定的交互作用。

Relationship between serum organochlorine residues,genetic polymorphism of glutathione S-transferase M1 and breast cancar in women

Objective To study the interactive effect of serum organochlorine residues and glutathione S-transferase M1(GSTM1) on the risk of breast cancer in women.Methods Seventy newly diagnosed female breast cancer patients and 70 controls were investigated with face-to-face interview.The organochlorine residue level in serum were measured with gas chromatography(GC).Genotypes of GSTM1 polymorphism were analyzed with multiplex allele-specific polymerase chain reaction(PCR).Results Odds ratio(OR) of breast cancer for...