摘要目的 探讨结肠癌患者晚期糖基化终末产物受体(receptor for advanced glycation endproducts,RAGE) Gly82Ser基因多态性与结肠癌发生发展的关系.方法 选取90例结肠癌患者为实验组和78例年龄、性别相匹配的结肠良性息肉患者为对照组,应用聚合酶链反应-限制性片段长度多态性技术检测RAGE Gly82Ser基因多态性的分布频率.结果 RAGE Gly82Ser基因型GG(野生型纯合子)、GS(杂合子)和SS(突变型纯合子)在肿瘤组的分布频率分别为53.3％、36.7％、10.0％,在对照组的分布频率分别为76.9％、19.2％、3.8％,各基因型在肿瘤组和对照组的分布频率符合Hardy-Weinberg平衡(P＞0.05).与GG基因型相比,杂合子GS基因型和S等位基因携带者(GS+ SS)的OR值分别为2.037(95％ CI:1.207～3.438)和2.022(95％CI:1.275 ～3.208),这种差异在TNM分期Ⅲ期+Ⅳ期和低分化的结肠癌患者中尤为显著,OR值分别为3.575 (95％CI:1.495 ～8.550)和3.580(95％ CI:1.390 ～9.217).结论 RAGE Gly82Ser基因多态性不仅能增加罹患结肠癌的风险,并且与结肠癌的恶性程度密切相关.

abstractsObjective To investigate the role of Gly82Ser polymorphism of receptor for advanced glycation end-products (RAGE) in the genesis and progression of colon cancer in Chinese population.Methods Using the method of PCR-restriction fragment length polymorphism (PCR-RFLP),the Gly82Ser genotype of RAGE were examined in 90 colon cancer patients and 78 control subjects age and sex matched.Analyses stratified by TNM and tumor differentiation were conducted to check the associations of the Gly82Ser gene polymorphisms in RAGE and development of colon cancer.Results The genotype distribution was in agreement with that predicted under Hardy-Weinberg equilibrium for both patients and controls (both P ＞ 0.05).With the GG genotype as reference,the odds ratio (OR) for heterozygous GG and carriers with S allele (GS and SS) were 2.037 (95％ CI:1.207-3.438) and 2.022 (95％ CI:1.275-3.208),respectively,which had a significantly higher risk of colon cancer.Moreover,the elevated colon cancer risk was especially evident in patients with TNM (Ⅲ + Ⅳ) and/or patients with poor differentiation by stratification analysis (OR,3.575,95％ CI:1.495-8.550 and OR,3.580,95％ CI:1.390-9.217,respectively).Conclusions The RAGE Gly82Ser polymorphism may confer not only an increased risk of colon cancer but also with invasion of colon cancer in the Chinese population.