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
Atherosclerosis plays an important role in ischemic stroke, and oxidative stress participates in the entire process of atherosclerosis. Glutathione S-transferase （GST） acting with other antioxidant enzymes can elimi...Atherosclerosis plays an important role in ischemic stroke, and oxidative stress participates in the entire process of atherosclerosis. Glutathione S-transferase （GST） acting with other antioxidant enzymes can eliminate reactive oxygen species and protect cells against oxidative damage. To assess the association of glutathione S-transferase （GSTT1 and GSTM1） gene polymorphisms with ischemic stroke in the Chinese Han population, the present study selected 315 patients with ischemic stroke and 210 healthy controls for comparison. GSTT1 and GSTM1 genotypes were determined using polymerase chain reactions, electrophoresis and imaging analysis. No obvious evidence of GSTTI-nulI, GSTMI-null and GSTTI/GSTMI-double null genotype distribution differences was found between case and control groups or between genders. Subgroup analysis showed that the risk of stroke was increased when hypertension was accompanied by GSTTl-null （odds ratio （OR） = 2.996, P 〈 0.001） and GSTMl-null （OR = 3.680, P 〈 0.001 ） genotypes; diabetes mellitus was accompanied by GSTTI-null （OR = 1.860, P = 0.031） and GSTMI-null （OR = 2.444, P = 0.002） genotypes, and smokers showed a GSTTl-null genotype （OR = 2.276, P = 0.003）. GSTT1- and GSTMl-null genotypes may interact synergistically with hypertension, diabetes mellitus and smoking to increase the incidence risk of ischemic stroke.展开更多
Objective To clarify the possible association of GSTT1 homozygous deletion with the susceptibility to pancreatic cancer.Methods We searched PubMed database,Chinese Journal Full Text Database(CNKI),and EMBASE to find t...Objective To clarify the possible association of GSTT1 homozygous deletion with the susceptibility to pancreatic cancer.Methods We searched PubMed database,Chinese Journal Full Text Database(CNKI),and EMBASE to find the eligible studies published up to April 18,2018 for evaluating the relationship between GSTT1 homozygous deletion and pancreatic cancer.The frequency of null genotype for GSTT1 between the pancreatic cancer group and the healthy control group was compared with Chi-square test,and odds ratios(ORs)value and 95%confidence interval(95%CI)were calculated.Results A total of 9 studies met the inclusion criteria,and 5952 cases consisting of 2387 pancreatic cancer patients and 3565 healthy controls were included in the meta analysis.Compared with the control group,frequency of null genotype for GSTT1 in the pancreatic cancer group was higher(33.4%vs.38.7%,OR=1.26,95%CI=1.01-1.58,P=0.04).Conclusion GSTT1 homozygous deletion individuals may have higher susceptibility to pancreatic cancer.展开更多
Objective:The aim of our study was to investigate the distribution of glutathione-S-transferase M1 (GSTM1) and T1 (GSTT1) gene polymorphism in hepatocellular carcinoma (HCC) and nasopharyngeal carcinoma (NPC) patients...Objective:The aim of our study was to investigate the distribution of glutathione-S-transferase M1 (GSTM1) and T1 (GSTT1) gene polymorphism in hepatocellular carcinoma (HCC) and nasopharyngeal carcinoma (NPC) patients in a high risk area in Guangxi Zhuang Autonomous Region,China.Methods:It was a case-control study.The genotypes of GSTM1 and GSTT1 in 181 HCC and 126 NPC patients were compared with 641 matched control.The GSTM1 and GSTT1 genotypes were detected using conventional multiplex PCR method.Results:The frequency of GSTM1 null genotype in HCC,NPC and control groups were 65.2%,61.9% and 47.6% respectively,significant difference between these two cancer groups and control was observed (P < 0.01).The frequency of GSTT1 null genotype in HCC,NPC and control groups were 57.5%,62.7% and 43.1% respectively,significant difference between these two cancer groups and control was observed (P < 0.01).Conclusion:The distributions of GSTM1 and T1 genes are polymorphic in HCC and NPC patients in a high risk area in Guangxi,individuals with GSTM1-null or GSTT1-null would have an increasing risk of developing HCC and NPC,especially when combination with virus infection (HBV or EBV) and absorbed chemical toxin (AFB1 or cigarette).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Atherosclerosis plays an important role in ischemic stroke, and oxidative stress participates in the entire process of atherosclerosis. Glutathione S-transferase （GST） acting with other antioxidant enzymes can eliminate reactive oxygen species and protect cells against oxidative damage. To assess the association of glutathione S-transferase （GSTT1 and GSTM1） gene polymorphisms with ischemic stroke in the Chinese Han population, the present study selected 315 patients with ischemic stroke and 210 healthy controls for comparison. GSTT1 and GSTM1 genotypes were determined using polymerase chain reactions, electrophoresis and imaging analysis. No obvious evidence of GSTTI-nulI, GSTMI-null and GSTTI/GSTMI-double null genotype distribution differences was found between case and control groups or between genders. Subgroup analysis showed that the risk of stroke was increased when hypertension was accompanied by GSTTl-null （odds ratio （OR） = 2.996, P 〈 0.001） and GSTMl-null （OR = 3.680, P 〈 0.001 ） genotypes; diabetes mellitus was accompanied by GSTTI-null （OR = 1.860, P = 0.031） and GSTMI-null （OR = 2.444, P = 0.002） genotypes, and smokers showed a GSTTl-null genotype （OR = 2.276, P = 0.003）. GSTT1- and GSTMl-null genotypes may interact synergistically with hypertension, diabetes mellitus and smoking to increase the incidence risk of ischemic stroke.
文摘Objective To clarify the possible association of GSTT1 homozygous deletion with the susceptibility to pancreatic cancer.Methods We searched PubMed database,Chinese Journal Full Text Database(CNKI),and EMBASE to find the eligible studies published up to April 18,2018 for evaluating the relationship between GSTT1 homozygous deletion and pancreatic cancer.The frequency of null genotype for GSTT1 between the pancreatic cancer group and the healthy control group was compared with Chi-square test,and odds ratios(ORs)value and 95%confidence interval(95%CI)were calculated.Results A total of 9 studies met the inclusion criteria,and 5952 cases consisting of 2387 pancreatic cancer patients and 3565 healthy controls were included in the meta analysis.Compared with the control group,frequency of null genotype for GSTT1 in the pancreatic cancer group was higher(33.4%vs.38.7%,OR=1.26,95%CI=1.01-1.58,P=0.04).Conclusion GSTT1 homozygous deletion individuals may have higher susceptibility to pancreatic cancer.
基金Supported by agrant from the National Natural Sciences Foundation of China (No. 39860032)
文摘Objective:The aim of our study was to investigate the distribution of glutathione-S-transferase M1 (GSTM1) and T1 (GSTT1) gene polymorphism in hepatocellular carcinoma (HCC) and nasopharyngeal carcinoma (NPC) patients in a high risk area in Guangxi Zhuang Autonomous Region,China.Methods:It was a case-control study.The genotypes of GSTM1 and GSTT1 in 181 HCC and 126 NPC patients were compared with 641 matched control.The GSTM1 and GSTT1 genotypes were detected using conventional multiplex PCR method.Results:The frequency of GSTM1 null genotype in HCC,NPC and control groups were 65.2%,61.9% and 47.6% respectively,significant difference between these two cancer groups and control was observed (P < 0.01).The frequency of GSTT1 null genotype in HCC,NPC and control groups were 57.5%,62.7% and 43.1% respectively,significant difference between these two cancer groups and control was observed (P < 0.01).Conclusion:The distributions of GSTM1 and T1 genes are polymorphic in HCC and NPC patients in a high risk area in Guangxi,individuals with GSTM1-null or GSTT1-null would have an increasing risk of developing HCC and NPC,especially when combination with virus infection (HBV or EBV) and absorbed chemical toxin (AFB1 or cigarette).
