目的探讨淋巴细胞特异性蛋白1（lymphocyte-specific protein 1,LSP1）基因rs3817198 T〉C多态性与乳腺癌易感性的关系。方法检索Pubmed,Embase和Web of Science数据库,对提取的12个研究结果进行Meta分析。结果 Meta分析结果表明LSP1 rs...目的探讨淋巴细胞特异性蛋白1（lymphocyte-specific protein 1,LSP1）基因rs3817198 T〉C多态性与乳腺癌易感性的关系。方法检索Pubmed,Embase和Web of Science数据库,对提取的12个研究结果进行Meta分析。结果 Meta分析结果表明LSP1 rs3817198基因多态性与乳腺癌风险相关（OR=1.07,95%CI 1.05~1.10,P=5.38×10-11）。在所有模型（包括共显性模型、显性模型和隐形模型）中排出GWAS研究后两者也存在相关性。种族和遗传亚组分层分析表明欧洲人群组（OR=1.10;95%CI 1.06~1.14;P=4.19×10-7）和遗传型乳腺癌人群（OR=1.07,95%CI 1.05-1.10,P=1.27×10-8）该位点多态性增加癌症风险。但非洲人群组、亚洲人群组和散发型乳腺癌人群的P值未达到GWAS显著水平。结论 Meta分析表明LSP1基因rs3817198 T〉C多态性可能增加乳腺癌的风险。展开更多
Several studies investigated associations of IFN-γ rs2430561 T/A,IL28 B rs12979860 C/T and ERα rs2077647 T/C gene polymorphisms with outcomes of hepatitis B virus（HBV） infection,but the results were controversial....Several studies investigated associations of IFN-γ rs2430561 T/A,IL28 B rs12979860 C/T and ERα rs2077647 T/C gene polymorphisms with outcomes of hepatitis B virus（HBV） infection,but the results were controversial.Therefore,we performed a meta-analysis of all published observational studies to address this inconsistency.Literature was searched in online database and a systematic review was conducted based on the search results.A total of 24 studies were included and dichotomous data were presented as odds ratio（OR） with a 95%confidence interval（CI）.The rs2430561 T allele was associated with reduced persistent HBV infection risk（T vs.A：OR,0.690;95%CI,[0.490,0.971]）,while the rs2077647 T allele significantly increased the risk of persistent HBV infection（T vs.C：OR.1.678;95%CI,[1.212,2.3231）.Rs 2077647 CC might play a role in protecting individuals against HBV persistence（TT vs.CC：OR,4.109;95%CI,[2.609,6.473]）.Furthermore,carriers of the rs2430561 TT genotype were more likely to clear HBV spontaneously compared with those of the AA genotype（TT vs.AA：OR,0.555;95%CI,[0.359,0.856]）.For rs12979860 C/T polymorphism,no significant correlation with HBV infection outcomes was found.In subgroup analyses,the results were similar to those of overall analysis.However,for rs2077647 TT vs.TC＋CC,significantly increased risks were observed in the Asian and hospital-based population,but not in the overall analysis.IFN-γrs2430561 T/A and ERα rs2077647 T/C genetic polymorphisms were associated with outcomes of HBV infection,but no association was found between IL28 B rs12979860 C/T and HBV infection.展开更多
随着无线通信技术的发展,车载自组织网络(Vehicular Ad Hoc Network,VANET)已经成为一个新型的研究领域。针对VANET中车辆行驶的特征以及车辆间安全信息传输严格的时延限制和高可靠性要求,提出了一种基于簇的协作MAC(CCB-MAC)协议用于...随着无线通信技术的发展,车载自组织网络(Vehicular Ad Hoc Network,VANET)已经成为一个新型的研究领域。针对VANET中车辆行驶的特征以及车辆间安全信息传输严格的时延限制和高可靠性要求,提出了一种基于簇的协作MAC(CCB-MAC)协议用于安全信息的传输。当在广播期间节点没有接收到安全信息时,被选择的辅助节点重传先前侦听到的安全信息到目的节点,并且重传是在未被预留的时隙中进行的,这将不会中断正常的传输。数值分析和仿真结果表明,CCB-MAC明显提高了安全信息传输成功的概率,降低了传输时延和丢包率。展开更多
Background and Aims:Recent genome-wide association studies have shown that low-density lipoprotein receptor(LDLR)rs1433099 polymorphism is associated with cardiovascular disease(CVD)risk in many countries.However,the ...Background and Aims:Recent genome-wide association studies have shown that low-density lipoprotein receptor(LDLR)rs1433099 polymorphism is associated with cardiovascular disease(CVD)risk in many countries.However,the association of LDLR rs1433099 with CVD in China has not been reported yet.There are no studies on LDLR rs1433099 and non-alcoholic fatty liver disease(NAFLD)as well.The purpose of this study was to investigate whether LDLR rs1433099 is related to CVD or NAFLD in the Chinese population.Methods:LDLR rs1433099 polymorphism was genotyped in 507 individuals,including 140 healthy controls,79 NAFLD patients,185 CVD patients,and 103 patients with NAFLD combined with CVD.The expression of LDLR was tested by the sequence detection system,and clinical parameters were assessed by biochemical tests and physical examination.Results:The genotype distribution of LDLR rs1433099 was not statistically different among the NAFLD group,the CVD group,the combined group,and the healthy control group(p>0.05).There was no significant correlation of LDLR rs1433099 genotypic distribution or allele frequency and the risk of NAFLD,CVD or NAFLD combined with CVD(p>0.05).In the CVD group,T allele carriers had higher alkaline phosphatase and gamma-glutamyl transpeptidase than non-carriers(p<0.05).Conclusions:Our study demonstrated that the LDLR rs1433099 polymorphism is not a risk factor of NAFLD.The LDLR rs1433099 polymorphism may increase the risk of CVD through a mechanism involving alkaline phosphatase and gamma-glutamyl transpeptidase.展开更多
基金supported by the National Natural Science Foundation of China(No.81102165,81102164 and 81273146)Priority Academic Program Development of Jiangsu Higher Education Institutions
文摘Several studies investigated associations of IFN-γ rs2430561 T/A,IL28 B rs12979860 C/T and ERα rs2077647 T/C gene polymorphisms with outcomes of hepatitis B virus（HBV） infection,but the results were controversial.Therefore,we performed a meta-analysis of all published observational studies to address this inconsistency.Literature was searched in online database and a systematic review was conducted based on the search results.A total of 24 studies were included and dichotomous data were presented as odds ratio（OR） with a 95%confidence interval（CI）.The rs2430561 T allele was associated with reduced persistent HBV infection risk（T vs.A：OR,0.690;95%CI,[0.490,0.971]）,while the rs2077647 T allele significantly increased the risk of persistent HBV infection（T vs.C：OR.1.678;95%CI,[1.212,2.3231）.Rs 2077647 CC might play a role in protecting individuals against HBV persistence（TT vs.CC：OR,4.109;95%CI,[2.609,6.473]）.Furthermore,carriers of the rs2430561 TT genotype were more likely to clear HBV spontaneously compared with those of the AA genotype（TT vs.AA：OR,0.555;95%CI,[0.359,0.856]）.For rs12979860 C/T polymorphism,no significant correlation with HBV infection outcomes was found.In subgroup analyses,the results were similar to those of overall analysis.However,for rs2077647 TT vs.TC＋CC,significantly increased risks were observed in the Asian and hospital-based population,but not in the overall analysis.IFN-γrs2430561 T/A and ERα rs2077647 T/C genetic polymorphisms were associated with outcomes of HBV infection,but no association was found between IL28 B rs12979860 C/T and HBV infection.
文摘随着无线通信技术的发展,车载自组织网络(Vehicular Ad Hoc Network,VANET)已经成为一个新型的研究领域。针对VANET中车辆行驶的特征以及车辆间安全信息传输严格的时延限制和高可靠性要求,提出了一种基于簇的协作MAC(CCB-MAC)协议用于安全信息的传输。当在广播期间节点没有接收到安全信息时,被选择的辅助节点重传先前侦听到的安全信息到目的节点,并且重传是在未被预留的时隙中进行的,这将不会中断正常的传输。数值分析和仿真结果表明,CCB-MAC明显提高了安全信息传输成功的概率,降低了传输时延和丢包率。
基金This study was supported by grants from the National Natural Science Foundation of China(No.31770837).
文摘Background and Aims:Recent genome-wide association studies have shown that low-density lipoprotein receptor(LDLR)rs1433099 polymorphism is associated with cardiovascular disease(CVD)risk in many countries.However,the association of LDLR rs1433099 with CVD in China has not been reported yet.There are no studies on LDLR rs1433099 and non-alcoholic fatty liver disease(NAFLD)as well.The purpose of this study was to investigate whether LDLR rs1433099 is related to CVD or NAFLD in the Chinese population.Methods:LDLR rs1433099 polymorphism was genotyped in 507 individuals,including 140 healthy controls,79 NAFLD patients,185 CVD patients,and 103 patients with NAFLD combined with CVD.The expression of LDLR was tested by the sequence detection system,and clinical parameters were assessed by biochemical tests and physical examination.Results:The genotype distribution of LDLR rs1433099 was not statistically different among the NAFLD group,the CVD group,the combined group,and the healthy control group(p>0.05).There was no significant correlation of LDLR rs1433099 genotypic distribution or allele frequency and the risk of NAFLD,CVD or NAFLD combined with CVD(p>0.05).In the CVD group,T allele carriers had higher alkaline phosphatase and gamma-glutamyl transpeptidase than non-carriers(p<0.05).Conclusions:Our study demonstrated that the LDLR rs1433099 polymorphism is not a risk factor of NAFLD.The LDLR rs1433099 polymorphism may increase the risk of CVD through a mechanism involving alkaline phosphatase and gamma-glutamyl transpeptidase.
