AIM To analyze the association between oncohematological diseases and GSTT1 /GSTM1 /CYP1A1 polymorphisms, dietary habits and smoking, in an argentine hospitalbased case-control study.METHODS This hospital-based case-c...AIM To analyze the association between oncohematological diseases and GSTT1 /GSTM1 /CYP1A1 polymorphisms, dietary habits and smoking, in an argentine hospitalbased case-control study.METHODS This hospital-based case-control study involved 125 patients with oncohematological diseases and 310 control subjects. A questionnaire was used to obtain sociodemographic data and information about habits. Blood samples were collected, and DNA was extracted using salting out methods. Deletions in GSTT1 and GSTM1 (null genotypes) were addressed by PCR. CYP1A1 MspI polymorphism was detected by PCR-RFLP. Odds ratio(OR) and 95%CI were calculated to estimate the association between each variable studied and oncohematological disease.RESULTS Women showed lower risk of disease compared to men(OR 0.52, 95%CI: 0.34-0.82, P = 0.003). Higher levels of education(> 12 years) were significantly associated with an increased risk, compared to complete primary school or less(OR 3.68, 95%CI: 1.82-7.40, P < 0.001 adjusted for age and sex). With respect to tobacco, none of the smoking categories showed association with oncohematological diseases. Regarding dietary habits, consumption of grilled/barbecued meat 3 or more times per month showed significant association with an increased risk of disease(OR 1.72, 95%CI: 1.08-2.75, P = 0.02). Daily consumption of coffee also was associated with an increased risk(OR 1.77, 95%CI: 1.03-3.03, P = 0.03). Results for GSTT1, GSTM1 and CYP1A1 polymorphisms showed no significant association with oncohematological diseases. When analyzing the interaction between polymorphisms and tobacco smoking or dietary habits, no statistically significant associations that modify disease risk were found. CONCLUSION We reported an increased risk of oncohematological diseases associated with meat and coffee intake. We did not find significant associations between genetic polymorphisms and blood cancer.展开更多
目的应用实时荧光定量PCR技术检测年龄相关性白内障(age-related cataract,ARC)患者谷胱甘肽-S-转移酶(glutathione S transferase,GST)M1、T1基因拷贝数变异。方法采用实时荧光定量PCR技术检测279例(558眼)ARC组患者和145例(290眼)对...目的应用实时荧光定量PCR技术检测年龄相关性白内障(age-related cataract,ARC)患者谷胱甘肽-S-转移酶(glutathione S transferase,GST)M1、T1基因拷贝数变异。方法采用实时荧光定量PCR技术检测279例(558眼)ARC组患者和145例(290眼)对照组的GSTM1、GSTT1基因重复或缺失等拷贝数变异情况,验证此方法在拷贝数检测中的准确性。结果相同条件下GSTM1、GSTT1基因和RNase P基因3次PCR扩增曲线基本重合、扩增效率基本一致、Ct值基本相同。GSTT1基因完全缺失(0个拷贝)的ARC个体(尤其是后囊下性ARC)和对照组相比,差异有统计学意义(P<0.05);至少有1个拷贝缺失的GSTT1基因型的个体发生ARC和皮质性ARC的风险升高(OR值分别为2.16、4.81,均为P<0.01),而>2个拷贝缺失的GSTT1基因型的个体发生这种风险降低(OR=0.19,P<0.05)。GSTM1基因拷贝数变异的ARC个体与对照组相比,差异无统计学意义(P>0.05)。结论 GSTT1基因拷贝数的缺失可能是ARC特别是皮质性和后囊下性白内障发生的危险因素。实时荧光定量PCR检测准确、效率高,适用于GSTM1、GSTT1基因拷贝数变异的检测,适用于包括ARC在内的眼病流行病学调查研究。展开更多
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
基金Supported by The "Consejo Nacional de Investigaciones Científicas y Técnicas"(PIP-634 to Richard S and Scholarship Grant to Cerliani MB)the "Instituto Nacional del Cáncer"(grant No.R.M.493:Asistencia financiera a proyectos de investigación en cáncer de origen nacional Ⅱ,to Pavicic W)
文摘AIM To analyze the association between oncohematological diseases and GSTT1 /GSTM1 /CYP1A1 polymorphisms, dietary habits and smoking, in an argentine hospitalbased case-control study.METHODS This hospital-based case-control study involved 125 patients with oncohematological diseases and 310 control subjects. A questionnaire was used to obtain sociodemographic data and information about habits. Blood samples were collected, and DNA was extracted using salting out methods. Deletions in GSTT1 and GSTM1 (null genotypes) were addressed by PCR. CYP1A1 MspI polymorphism was detected by PCR-RFLP. Odds ratio(OR) and 95%CI were calculated to estimate the association between each variable studied and oncohematological disease.RESULTS Women showed lower risk of disease compared to men(OR 0.52, 95%CI: 0.34-0.82, P = 0.003). Higher levels of education(> 12 years) were significantly associated with an increased risk, compared to complete primary school or less(OR 3.68, 95%CI: 1.82-7.40, P < 0.001 adjusted for age and sex). With respect to tobacco, none of the smoking categories showed association with oncohematological diseases. Regarding dietary habits, consumption of grilled/barbecued meat 3 or more times per month showed significant association with an increased risk of disease(OR 1.72, 95%CI: 1.08-2.75, P = 0.02). Daily consumption of coffee also was associated with an increased risk(OR 1.77, 95%CI: 1.03-3.03, P = 0.03). Results for GSTT1, GSTM1 and CYP1A1 polymorphisms showed no significant association with oncohematological diseases. When analyzing the interaction between polymorphisms and tobacco smoking or dietary habits, no statistically significant associations that modify disease risk were found. CONCLUSION We reported an increased risk of oncohematological diseases associated with meat and coffee intake. We did not find significant associations between genetic polymorphisms and blood cancer.
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。
