老年人胃癌与谷胱甘肽转硫酶P1基因多态性关系的研究

目的 探讨幽门螺杆菌(Hp)感染及谷胱甘肽转硫酶P1(GSTP1)基因多态性与胃癌的关系.方法 选择老年胃癌患者(胃癌组)98例和胃镜检查正常者(对照组)149例,以快速尿素酶试验、13C-尿素呼气试验或活检标本吉姆萨染色(Giemsa)检测Hp感染;通过聚合酶链式反应-限制性片段长度多态性(PCR-RFLP)分析方法检测GSTP1基因型.结果 Hp感染率胃癌组(54.1%)与对照组(40.9%)比较,差异有统计学意义(x2=4.11,P＜0.05);具有GSTP1突变纯和基因型并有Hp感染阳性的人群胃癌发病风险显著增加OR值5.44(1.26～26.79)(x2=7.13,P＜0.01).结论 老年患者Hp感染和GSTP1基因型多态性与胃癌的发病风险有关.

Abstract：

Objective To study the relationships of Helicobacter pylori (Hp) infection and genetic polymorphisms of glutathione s-transferase P1 (GSTP1) with gastric cancer (GC). Methods The 98 patients with GC and 149 controls with normal finding at endoscopy were enrolled for this study. The rapid urease test (RUT), 13C- urea breath test (13C-UBT) and Giemsa staining of biopsy samples were used to check Hp infection. PCR-based restriction fragment length polymorphisms (PCR-RFLP) was used to detect GSTP1 genotype. Results The rate of Hp infection was higher in GC group than in control group (54.1% vs. 40.9%, x2 =4.11, P＜0. 05). The risk of GC would significantly increase in the GSTP1 homozygous mutant gene (MM) group with Hp infection (OR=5.44, 95%CI 1. 26-26. 79, x2=7.13, P＜0.05). Conclusions Hp infection and GSTP1 genetic polymorphisms are associated with gastric cancer risk in the elderly.

Relationship between gastric cancer and glutathione S-transferase P1 gene polymorphism in the elderly

Objective To study the relationships of Helicobacter pylori (Hp) infection and genetic polymorphisms of glutathione s-transferase P1 (GSTP1) with gastric cancer (GC). Methods The 98 patients with GC and 149 controls with normal finding at endoscopy were enrolled for this study. The rapid urease test (RUT), 13C- urea breath test (13C-UBT) and Giemsa staining of biopsy samples were used to check Hp infection. PCR-based restriction fragment length polymorphisms (PCR-RFLP) was used to detect GSTP1 genotype. Results The rate of Hp infection was higher in GC group than in control group (54.1% vs. 40.9%, x2 =4.11, P＜0. 05). The risk of GC would significantly increase in the GSTP1 homozygous mutant gene (MM) group with Hp infection (OR=5.44, 95%CI 1. 26-26. 79, x2=7.13, P＜0.05). Conclusions Hp infection and GSTP1 genetic polymorphisms are associated with gastric cancer risk in the elderly.