AIM： To assess if the included vascular endothelial growth factor （VEGF） polymorphisms rs3025035, rs3025021 and rs2010963 are associated to proliferative retinopathy in a Mexican population with type 2 diabetes mel...AIM： To assess if the included vascular endothelial growth factor （VEGF） polymorphisms rs3025035, rs3025021 and rs2010963 are associated to proliferative retinopathy in a Mexican population with type 2 diabetes mellitus （T2DM）. METHODS： A case-control study was conducted in adult individuals with T2DM associated to proliferative retinopathy or non-proliferative retinopathy from Oct. 2014 to Jun. 2015 from the Retina Department of the Asociation to Prevent Blindness in Mexico. The selected patients were adults with a diagnosis of T2DM ≥5y. All subjects had a comprehensive ocular examination and the classification of the retinopathy severity was made considering the Early Treatment Diabetic Retinopathy Study （ETDRS） standardization protocols. Genomic DNA was extracted from whole fresh blood. All samples were genotyped by qPCR for selected VEGF polymorphisms. Hardy-Weinberg equilibrium was calculated by comparing Chi-square values between the expected and the observed values for genotype counts.RESULTS： In total 142 individuals were enrolled, 71 individuals with T2DM and associated proliferative retinopathy and 71 individuals with non-proliferative retinopathy. One-sided Fisher’s exact test was performed for rs3025021 [OR （95% CI）=0.44（0.08-2.2）; P=0.25] and rs2010963 [OR （95% CI）=0.63（0.25-1.6）; P=0.23]. The minor allelic frequencies obtained were 26% for rs3025021, 10% for rs3025035 and 61% for rs2010963. The pairwise linkage disequilibrium between the three SNP was assessed, and was as follows： rs3025021 vs rs3025035： D’=1.0, r2=0.1043, P≤0.0001; rs3025021 vs rs2010963： D’=0.442, r2=0.0446, P=0.149; rs3025035 vs rs2010963： D’=0.505, r2=0.0214, P=0.142.CONCLUSION： This is the first analysis involving VEGF polymorphisms and proliferative diabetic retinopathy in a Mexican population. A major finding of the present study is that none of the polymorphisms studied was significantly associated with proliferative retinopathy. Based on these results, we can infer tha展开更多
AIM： To evaluate the impact of the ITGA2 gene polymorphism on gastric cancer risk. METHODS： A hospital-based case-control study was conducted, including 307 gastric cancer patients and 307 age- and gender-matched co...AIM： To evaluate the impact of the ITGA2 gene polymorphism on gastric cancer risk. METHODS： A hospital-based case-control study was conducted, including 307 gastric cancer patients and 307 age- and gender-matched control subjects. The genotypes were identified by polymerase chain reaction-restriction fragment length polymorphism assay. RESULTS： The frequencies of the wild and variant genotypes in cases were significantly different from those of controls （P = 0.019）. Compared with individuals with the wild genotype CC, subjects with the variant genotypes （CT ＋ IT） had a significantly higher risk of gastric cancer （adjusted odds ratio = 1.57, 95% CI = 1.13-2.17, P = 0.007）. In stratified analyses, the elevated gastric cancer risk was especially evident in older individuals aged 〉 58 years, nonsmokers and rural subjects. Further analyses revealed that the variant genotypes were associated with poor tumor differentiation and adjacent organ invasion in the sub-analysis of gastric cancer patients. CONCLUSION： The ITGA2 gene C807T polymorphism may be associated with an increased risk of gastric cancer, differentiation and invasion of gastric cancer.展开更多
AIM:To investigate the relationship between Apolipoprotein C3(APOC3)(-455T>C) polymorphism and nonalcoholic fatty liver disease(NAFLD) in the Southern Chinese han population.METHODS:In this prospective case-control...AIM:To investigate the relationship between Apolipoprotein C3(APOC3)(-455T>C) polymorphism and nonalcoholic fatty liver disease(NAFLD) in the Southern Chinese han population.METHODS:In this prospective case-control study,we recruited 300 NAFLD patients and 300 healthy controls to a cohort representing Southern Chinese han population at The First Affiliated Hospital,Sun Yat-sen University,from January to December 2012. Polymerase chain reaction-restriction fragment length polymorphism and DNA sequencing were used to genotype the APOC3(-455T>C) variants.RESULTS:After adjusting for age,gender,and bodymass index,TC and CC genotypes were found to increase the susceptibility to NAFLD compared to the TT genotype,with adjusted odds ratios(ORs) of 1.77(95%CI:1.16-2.72) and 2.80(95%CI:1.64-4.79),respectively. Further stratification analysis indicated that carriers of the CC genotype was more susceptible to insulin resistance(IR) than those of the TT genotype,with an OR of 3.24(95%CI:1.52-6.92). The CC genotype also was associated with a significantly higher risk of hypertension,hypertriglyceridemia,and low levels of high-density lipoprotein cholesterol(hDL)(P < 0.05). No association was found between the APOC3(-455T>C) polymorphism and obesity,impaired glucose tolerance,hyperuricemia,hypercholesterolemia,or high levels of low-density lipoprotein cholesterol(LDL)(P > 0.05).CONCLUSION:APOC3(-455T>C) genetic variation is involved in the susceptibility to developing NAFLD,IR,hypertension,hypertriglyceridemia,and low hDL in the Southern Chinese han population.展开更多
AIM: To evaluate the association between of the interleukin-10 (IL-10) promoter polymorphisms and survival of advanced gastric cancer (GC) patients. METHODS: The IL-10 (-1082, rs1800896; -819, rs1800871; and-592, rs18...AIM: To evaluate the association between of the interleukin-10 (IL-10) promoter polymorphisms and survival of advanced gastric cancer (GC) patients. METHODS: The IL-10 (-1082, rs1800896; -819, rs1800871; and-592, rs1800896) genotypes in 234 patients with advanced gastric cancer and in 243 healthy controls were determined by polymerase chain reaction-restriction fragment length polymorphism assay. Odds ratios (OR) and 95% confidence intervals (CI) were calculated by unconditional logistic regression for the associations between IL-10 genotypes and the risk of GC. The Kaplan-Meier method with log-rank testing was used to evaluate the association between genotype and survival of the patients.RESULTS: The IL-10 -1082 G allele and GCC (-1082, -819 and -592) haplotype were associated with increased gastric cancer risks (OR 1.2, 95% CI 0.6-3.2, P = 0.007, for -1082 G allele, OR = 2.3, 95% CI, 1.2-4.1, P = 0.005, for GCC haplotype, respectively). However, none of the three IL-10 gene polymorphisms (-1082, -819 and -592) was correlated with gastric cancer survival (P > 0.05), and none of the genotypes of the three IL-10 sites was found as independent prognostic risk factors in the multivariate test. CONCLUSION: IL-10 gene promoter polymorphisms may not be associated with the prognosis of advanced gastric cancer.展开更多
基金Supported by a grant from the Asociation to Prevent Blindness in Mexico(No.RE-14-02)
文摘AIM： To assess if the included vascular endothelial growth factor （VEGF） polymorphisms rs3025035, rs3025021 and rs2010963 are associated to proliferative retinopathy in a Mexican population with type 2 diabetes mellitus （T2DM）. METHODS： A case-control study was conducted in adult individuals with T2DM associated to proliferative retinopathy or non-proliferative retinopathy from Oct. 2014 to Jun. 2015 from the Retina Department of the Asociation to Prevent Blindness in Mexico. The selected patients were adults with a diagnosis of T2DM ≥5y. All subjects had a comprehensive ocular examination and the classification of the retinopathy severity was made considering the Early Treatment Diabetic Retinopathy Study （ETDRS） standardization protocols. Genomic DNA was extracted from whole fresh blood. All samples were genotyped by qPCR for selected VEGF polymorphisms. Hardy-Weinberg equilibrium was calculated by comparing Chi-square values between the expected and the observed values for genotype counts.RESULTS： In total 142 individuals were enrolled, 71 individuals with T2DM and associated proliferative retinopathy and 71 individuals with non-proliferative retinopathy. One-sided Fisher’s exact test was performed for rs3025021 [OR （95% CI）=0.44（0.08-2.2）; P=0.25] and rs2010963 [OR （95% CI）=0.63（0.25-1.6）; P=0.23]. The minor allelic frequencies obtained were 26% for rs3025021, 10% for rs3025035 and 61% for rs2010963. The pairwise linkage disequilibrium between the three SNP was assessed, and was as follows： rs3025021 vs rs3025035： D’=1.0, r2=0.1043, P≤0.0001; rs3025021 vs rs2010963： D’=0.442, r2=0.0446, P=0.149; rs3025035 vs rs2010963： D’=0.505, r2=0.0214, P=0.142.CONCLUSION： This is the first analysis involving VEGF polymorphisms and proliferative diabetic retinopathy in a Mexican population. A major finding of the present study is that none of the polymorphisms studied was significantly associated with proliferative retinopathy. Based on these results, we can infer tha
基金Supported by The National Natural Science Foundation of Chi-na,No. 30873099Nanjing Medical University start-up research fund for Wang XRthe Natural Science Foundation of education Department,Jiangsu Province,No. 08KJB320004
文摘AIM： To evaluate the impact of the ITGA2 gene polymorphism on gastric cancer risk. METHODS： A hospital-based case-control study was conducted, including 307 gastric cancer patients and 307 age- and gender-matched control subjects. The genotypes were identified by polymerase chain reaction-restriction fragment length polymorphism assay. RESULTS： The frequencies of the wild and variant genotypes in cases were significantly different from those of controls （P = 0.019）. Compared with individuals with the wild genotype CC, subjects with the variant genotypes （CT ＋ IT） had a significantly higher risk of gastric cancer （adjusted odds ratio = 1.57, 95% CI = 1.13-2.17, P = 0.007）. In stratified analyses, the elevated gastric cancer risk was especially evident in older individuals aged 〉 58 years, nonsmokers and rural subjects. Further analyses revealed that the variant genotypes were associated with poor tumor differentiation and adjacent organ invasion in the sub-analysis of gastric cancer patients. CONCLUSION： The ITGA2 gene C807T polymorphism may be associated with an increased risk of gastric cancer, differentiation and invasion of gastric cancer.
基金Supported by Natural Scientific Foundation of Guangdong Province,No.S2012040007685Doctoral Program Foundation of Institutions of Higher Education of China,No.20120171120090National Natural Science Foundation of China,No.81301769 and No.81170392
文摘AIM:To investigate the relationship between Apolipoprotein C3(APOC3)(-455T>C) polymorphism and nonalcoholic fatty liver disease(NAFLD) in the Southern Chinese han population.METHODS:In this prospective case-control study,we recruited 300 NAFLD patients and 300 healthy controls to a cohort representing Southern Chinese han population at The First Affiliated Hospital,Sun Yat-sen University,from January to December 2012. Polymerase chain reaction-restriction fragment length polymorphism and DNA sequencing were used to genotype the APOC3(-455T>C) variants.RESULTS:After adjusting for age,gender,and bodymass index,TC and CC genotypes were found to increase the susceptibility to NAFLD compared to the TT genotype,with adjusted odds ratios(ORs) of 1.77(95%CI:1.16-2.72) and 2.80(95%CI:1.64-4.79),respectively. Further stratification analysis indicated that carriers of the CC genotype was more susceptible to insulin resistance(IR) than those of the TT genotype,with an OR of 3.24(95%CI:1.52-6.92). The CC genotype also was associated with a significantly higher risk of hypertension,hypertriglyceridemia,and low levels of high-density lipoprotein cholesterol(hDL)(P < 0.05). No association was found between the APOC3(-455T>C) polymorphism and obesity,impaired glucose tolerance,hyperuricemia,hypercholesterolemia,or high levels of low-density lipoprotein cholesterol(LDL)(P > 0.05).CONCLUSION:APOC3(-455T>C) genetic variation is involved in the susceptibility to developing NAFLD,IR,hypertension,hypertriglyceridemia,and low hDL in the Southern Chinese han population.
基金Supported by Natural Science Foundation of Shandong Province China, No. ZR2009CM138
文摘AIM: To evaluate the association between of the interleukin-10 (IL-10) promoter polymorphisms and survival of advanced gastric cancer (GC) patients. METHODS: The IL-10 (-1082, rs1800896; -819, rs1800871; and-592, rs1800896) genotypes in 234 patients with advanced gastric cancer and in 243 healthy controls were determined by polymerase chain reaction-restriction fragment length polymorphism assay. Odds ratios (OR) and 95% confidence intervals (CI) were calculated by unconditional logistic regression for the associations between IL-10 genotypes and the risk of GC. The Kaplan-Meier method with log-rank testing was used to evaluate the association between genotype and survival of the patients.RESULTS: The IL-10 -1082 G allele and GCC (-1082, -819 and -592) haplotype were associated with increased gastric cancer risks (OR 1.2, 95% CI 0.6-3.2, P = 0.007, for -1082 G allele, OR = 2.3, 95% CI, 1.2-4.1, P = 0.005, for GCC haplotype, respectively). However, none of the three IL-10 gene polymorphisms (-1082, -819 and -592) was correlated with gastric cancer survival (P > 0.05), and none of the genotypes of the three IL-10 sites was found as independent prognostic risk factors in the multivariate test. CONCLUSION: IL-10 gene promoter polymorphisms may not be associated with the prognosis of advanced gastric cancer.
