目的探讨代谢酶基因C Y P 1A1和G STM 1多态性与广西人群胃癌遗传易感性之间的相关性。方法采用PC R技术检测广西地区121例胃癌患者和138例健康人的C Y P 1A1基因M SP1多态性和G STM 1基因多态性的分布频率,分析其与广西地区胃癌遗传易...目的探讨代谢酶基因C Y P 1A1和G STM 1多态性与广西人群胃癌遗传易感性之间的相关性。方法采用PC R技术检测广西地区121例胃癌患者和138例健康人的C Y P 1A1基因M SP1多态性和G STM 1基因多态性的分布频率,分析其与广西地区胃癌遗传易感性的相关性及交互作用。结果 C Y P 1A1、M SP1 3种基因型(m 1/m 1、m 1/m 2、m 2/m 2)分布频率在两组间比较无统计学意义(χ2=0.901,P=0.342)。胃癌组G STM 1(-)基因型频率(54.5%)显著高于对照组(39.1%)(χ2=6.140,P=0.013)。携带G STM 1(-)基因型的个体患胃癌的风险是携带G STM 1(+)基因型个体的2.13倍(95%C I=1.079～1.831,P=0.013)。与同时携带G STM 1(+)和C Y P 1A1 M SP1 m 1/m 1的个体比较,同时携带G STM 1(-)和C Y P 1A1 M SP1突变m 2基因型的个体患胃癌的O R为2.327(95%C I=1.110～4.280),差异具有统计学意义(P=0.030)。结论单独的C Y P 1A1基因M SP1多态性与广西人群胃癌易感性无明显相关。G STM 1(-)基因型增加广西人群患胃癌的风险。G STM 1(-)基因型与C Y P 1A1 m 2突变基因型联合显著增加广西人群的胃癌易感性。展开更多
AIM: To evaluate whether alcohol dehydrogenase-1B (ADH1B) His47Arg and aldehyde dehydrogenase-2 (ALDH2) Glu487Lys polymorphism is involved in the esophageal squamous cell carcinoma (ESCC) risk in Chinese Han populatio...AIM: To evaluate whether alcohol dehydrogenase-1B (ADH1B) His47Arg and aldehyde dehydrogenase-2 (ALDH2) Glu487Lys polymorphism is involved in the esophageal squamous cell carcinoma (ESCC) risk in Chinese Han population. METHODS: Seven studies of ADH1B and ALDH2 genotypes in Chinese Han population in 1450 cases and 2459 controls were included for meta-analysis. Stratified analyses were carried out to determine the genealcohol and gene-gene interaction with ESCC risk. Potential sources of heterogeneity between studies were explored, and publication bias was also evaluated. RESULTS: Individuals with ADH1B arginine (Arg)/Arg genotype showed 3.95-fold increased ESCC risk in the recessive genetic model [Arg/Arg vs Arg/histidine (His) + His/His: odds ratio (OR) = 3.95, 95% confidence in- terval (CI): 2.76-5.67]. Signif icant association was found in the dominant model for ALDH2 lysine (Lys) allele [glutamate (Glu)/Lys + Lys/Lys vs Glu/Glu: OR = 2.00,95% CI: 1.54-2.61]. Compared with the non-alcoholics, Arg/Arg (OR = 25.20, 95% CI: 10.87-53.44) and Glu/ Lys + Lys/Lys (OR = 21.47, 95% CI: 6.44-71.59) were found to interact with alcohol drinking to increase the ESCC risk. ADH1B Arg+ and ALDH2 Lys+ had a higher risk for ESCC (OR = 7.09, 95% CI: 2.16-23.33). CONCLUSION: The genetic variations of ADH1B His47Arg and ALDH2 Glu487Lys are susceptible loci for ESCC in Chinese Han population and interact substantially with alcohol consumption. The individuals carrying both risky genotypes have a higher baseline risk of ESCC.展开更多
文摘目的探讨代谢酶基因C Y P 1A1和G STM 1多态性与广西人群胃癌遗传易感性之间的相关性。方法采用PC R技术检测广西地区121例胃癌患者和138例健康人的C Y P 1A1基因M SP1多态性和G STM 1基因多态性的分布频率,分析其与广西地区胃癌遗传易感性的相关性及交互作用。结果 C Y P 1A1、M SP1 3种基因型(m 1/m 1、m 1/m 2、m 2/m 2)分布频率在两组间比较无统计学意义(χ2=0.901,P=0.342)。胃癌组G STM 1(-)基因型频率(54.5%)显著高于对照组(39.1%)(χ2=6.140,P=0.013)。携带G STM 1(-)基因型的个体患胃癌的风险是携带G STM 1(+)基因型个体的2.13倍(95%C I=1.079～1.831,P=0.013)。与同时携带G STM 1(+)和C Y P 1A1 M SP1 m 1/m 1的个体比较,同时携带G STM 1(-)和C Y P 1A1 M SP1突变m 2基因型的个体患胃癌的O R为2.327(95%C I=1.110～4.280),差异具有统计学意义(P=0.030)。结论单独的C Y P 1A1基因M SP1多态性与广西人群胃癌易感性无明显相关。G STM 1(-)基因型增加广西人群患胃癌的风险。G STM 1(-)基因型与C Y P 1A1 m 2突变基因型联合显著增加广西人群的胃癌易感性。
基金Supported by The National Natural Science Foundation of China, No. 30901726
文摘AIM: To evaluate whether alcohol dehydrogenase-1B (ADH1B) His47Arg and aldehyde dehydrogenase-2 (ALDH2) Glu487Lys polymorphism is involved in the esophageal squamous cell carcinoma (ESCC) risk in Chinese Han population. METHODS: Seven studies of ADH1B and ALDH2 genotypes in Chinese Han population in 1450 cases and 2459 controls were included for meta-analysis. Stratified analyses were carried out to determine the genealcohol and gene-gene interaction with ESCC risk. Potential sources of heterogeneity between studies were explored, and publication bias was also evaluated. RESULTS: Individuals with ADH1B arginine (Arg)/Arg genotype showed 3.95-fold increased ESCC risk in the recessive genetic model [Arg/Arg vs Arg/histidine (His) + His/His: odds ratio (OR) = 3.95, 95% confidence in- terval (CI): 2.76-5.67]. Signif icant association was found in the dominant model for ALDH2 lysine (Lys) allele [glutamate (Glu)/Lys + Lys/Lys vs Glu/Glu: OR = 2.00,95% CI: 1.54-2.61]. Compared with the non-alcoholics, Arg/Arg (OR = 25.20, 95% CI: 10.87-53.44) and Glu/ Lys + Lys/Lys (OR = 21.47, 95% CI: 6.44-71.59) were found to interact with alcohol drinking to increase the ESCC risk. ADH1B Arg+ and ALDH2 Lys+ had a higher risk for ESCC (OR = 7.09, 95% CI: 2.16-23.33). CONCLUSION: The genetic variations of ADH1B His47Arg and ALDH2 Glu487Lys are susceptible loci for ESCC in Chinese Han population and interact substantially with alcohol consumption. The individuals carrying both risky genotypes have a higher baseline risk of ESCC.
