Objective To investigate the relationship between single nucleotide polymorphisms(SNPs) of the interleukin-4(IL-4) gene and outcome of hepatitis B virus(HBV) infection in a Chinese Han population.Methods Total of 501 ...Objective To investigate the relationship between single nucleotide polymorphisms(SNPs) of the interleukin-4(IL-4) gene and outcome of hepatitis B virus(HBV) infection in a Chinese Han population.Methods Total of 501 patients with chronic hepatitis B virus(HBV) infection and 301 controls with selflimiting HBV infection were studied. Three tag SNPs in the IL-4 gene(rs2227284G/T, rs2243283C/G and rs2243288A/G) were genotyped by the Multiplex snapshot technique. The genotype and allele frequencies were calculated and analyzed.Results The three SNPs showed no significant genotype/allele associations with chronic HBV infection. Overall allele P values were: rs2227284, P = 0.655, odds ratio(OR) [95% confidence interval(CI)] = 1.070(0.793-1.445); rs2243283, P = 0.849, OR(95% CI) = 0.976(0.758-1.257); rs2243288, P = 0.659, OR(95% CI) = 1.060(0.818-1.375). Overall genotype P values were: rs2227284, P = 0.771; rs2243283, P = 0.571; rs2243288, P = 0.902. There were no statistically significant differences between patients with chronic HBV infection and controls. Haplotypes generated by these three SNPs also had no significant differences between the two groups. Conclusions The three tag SNPs of IL-4 were not associated with the outcome of HBV infection in the Han Chinese population.展开更多
AIM To investigate the impact of IL28 B and OAS gene polymorphisms on interferon treatment responses in children with chronic hepatitis B.METHODS We enrolled 52 children(between the ages of 4 and 18) with hepatitis B ...AIM To investigate the impact of IL28 B and OAS gene polymorphisms on interferon treatment responses in children with chronic hepatitis B.METHODS We enrolled 52 children(between the ages of 4 and 18) with hepatitis B e antigen-negative chronic hepatitis B(CHB), who were treated with pegylated interferon alfa for 48 wk. Single nucleotide polymorphisms in the OAS1(rs1131476), OAS2(rs1293747),OAS3(rs2072136), OASL(rs10849829) and IL28B(rs12979860, rs12980275 and rs8099917) genes were studied to examine their associations with responses to IFN treatment in paediatric patients. We adopted two criteria for the therapeutic response, achieving an hepatitis B virus(HBV) DNA level < 2000 IU/m L and normalization of ALT activity(< 40 IU/L). To perform the analyses, we compared the patients in terms of achieving a partial response(PR) and a complete response(CR) upon measurement at the 24-wk posttreatment follow-up. RESULTS The PR and CR rates were 80.8% and 42.3%, respectively. Factors such as age, gender and liver histology had no impact on the type of response(partial or complete). A statistically significant relationship between higher baseline HBV DNA and ALT activity levels and lower rates of PR and CR was shown(P < 0.05). The allele association analysis revealed that only the IL-28 B rs12979860(C vs T) and IL28 B rs12980275(A vs G) markers significantly affected the achievement of PR(P = 0.021, OR = 3.3, 95%CI: 1.2-9.2 and P = 0.014, OR = 3.7, 95%CI: 1.3-10.1, respectively). However, in the genotype analysis, only IL-28 B rs12980275 was significantly associated with PR(AA vs AG-GG, P = 0.014, OR = 10.9, 95%CI: 1.3-93.9). The association analysis for CR showed that the TT genotype of IL28 B rs12979860 was present only in the no-CR group(P = 0.033) and the AA genotype of OASL rs10849829 was significantly more frequent in the noCR group(P = 0.044, OR = 0.26, 95%CI: 0.07-0.88). The haplotype analysis revealed significant associations between PR and CR and OAS haplotype(P = 0.0002 and P = 0.001, respectively), but no association with IL28 B haplotype was observed.CONCLUSION IL28 B and OAS polymorphisms are associated with different clinical outcomes in CHB children treated with interferon.展开更多
Host genetic factors may predict the outcome and treatment response in hepatitis C virus（HCV）infection.One of these factors is the single nucleotide polymorphisms of the interleukin 28B（IL28B）gene.We sought to eva...Host genetic factors may predict the outcome and treatment response in hepatitis C virus（HCV）infection.One of these factors is the single nucleotide polymorphisms of the interleukin 28B（IL28B）gene.We sought to evaluate the outcome of pegylated interferon and ribavirin therapy in association with IL-28B rs8099917 and rsl2980275 in patients infected with HCV genotype 4.A total of 180 patients with chronic hepatitis C were selected from Egyptians who have received combined therapy with pegylated interferon and ribavirin for 6 months and their response was evaluated after follow-up at 0,6,12,24 and 48 weeks from the beginning of the therapy.Blood samples were collected from responders and non-responders.Genomic DNA was extracted from whole blood and genotyping was carried out by polymerase chain reaction and restriction fragment length polymorphism（PCR-RFLP）.Our results showed that TT genotype of rs8099917 was associated with higher sustained viral response（SVR）rates and G allele represented a risk factor for failure of response（OR=3.7,CI=1.8：7.64）while rs12980275 was not significantly associated with SVR in genotype 4 Egyptian patients.The determination of 1L-28B SNPs may be useful in enhancing correct prediction of SVR achievement in treating this group of genotype 4 patients.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
AIM:To analyze the role of rs12979860 and rs8099917polymorphisms in hepatitis C virus(HCV)genotype 1infection of Brazilians.METHODS:A total of 145 adult patients diagnosed with genotype 1 chronic hepatitis C(CHC)who h...AIM:To analyze the role of rs12979860 and rs8099917polymorphisms in hepatitis C virus(HCV)genotype 1infection of Brazilians.METHODS:A total of 145 adult patients diagnosed with genotype 1 chronic hepatitis C(CHC)who had completed a 48-wk regimen of pegylated-interferonα-2a or-2b plus ribavirin combination therapy were recruited from six large urban healthcare centers and199 healthy blood donors(controls)from a single site between January 2010 and January 2012.Data on the patients’response to treatment was collected.Polymerase chain reaction-restriction fragment length polymorphism genotyping of the interleukin(IL)28B gene fragment encompassing the single nucleotide polymorphisms(SNPs)rs12979860(C/T)and rs8099917(T/G)was carried out for 79 of the CHC patients and 199 of the controls.Bi-directional amplicon sequencing of the two SNPs was carried out for the remaining 66 CHC patients.RESULTS:SNP rs12979860 genotyping was successful in 99.5%of the controls and 97.2%of the CHC patients,whereas the SNP rs8099917 genotyping was successful in 95.5%of the controls and 100%of the CHC patients.The genotype and allele distributions for both rs12979860 and rs8099917 were significantly different between the control and CHC patient groups,with significantly higher genotype frequencies of CC and TT in the controls(P=0.037 and 0.046,respectively)and of TT and GG in the CHC patients(P=0.0009and 0.0001,respectively).Analysis of the CHC patients who achieved sustained virological response(SVR)to treatment(n=55)indicated that the rs12979860 C allele and CC genotype were predictors of SVR(P=0.02).No significant correlation was found between rs8099917 genotypes and treatment response,but carriers of the T allele showed significantly higher rates of SVR(P=0.02).Linkage disequilibrium analysis of the group that achieved SVR showed a significant association between rs12979860 and rs8099917(P=0.07).CONCLUSION:The higher allele frequency of rs12979860 C and rs8099917 T observed in non-HCVinfected individuals may indicate a potential protective role for these IL28B-related polymorphisms.展开更多
目的本研究旨在探讨白细胞介素28B(interleukin-28B),IL-28B)基因多态性与丙型肝炎病毒(hepatitis C virus,HCV)感染者自发清除的关系。方法入组122例HCV感染者(其中24例自发清除者,98例慢性丙型肝炎患者),检测2组患者IL-28B基因周围rs1...目的本研究旨在探讨白细胞介素28B(interleukin-28B),IL-28B)基因多态性与丙型肝炎病毒(hepatitis C virus,HCV)感染者自发清除的关系。方法入组122例HCV感染者(其中24例自发清除者,98例慢性丙型肝炎患者),检测2组患者IL-28B基因周围rs12979860,rs8099917,rs10853728,rs12980275,rs4803219,rs4803223,rs8105790共7个位点的基因型。检测其中慢性丙型肝炎患者组未经抗病毒治疗时丙氨酸氨基转移酶(ALT)及HCV-RNA水平;采用非参数秩和检验比较7个位点不同基因型病毒载量水平的差异。结果自发清除组患者的平均感染年龄比慢性丙型肝炎组患者小[分别为(17.8±14.7)岁及(28.8±14.6)岁,P=0.002];rs12979860位点CC/CT、rs8099917位点TT/TG、rs10853728位点CC/CG、rs12980275位点AA/AG、rs4803219位点CC/CT、rs4803223位点AA/AG、rs8105790位点TT/TC不同基因型自发清除率分别为22.9%/7.7%(P=0.146)、22.0%/9.1%(P=0.279)、22.7%/14.9%(P=0.293)、22.7%/8.3%(P=0.196)、22.2%/8.7%(P=0.238)、16.7%/30.8%(P=0.109)、23.2%/7.4%(P=0.123)。在上述7个位点中,慢性HCV感染者HCV RNA水平在不同的IL-28B基因型间,差异无统计学意义,P值分别为0.836、0.715、0.301、0.301、0.486、0.996、0.312。结论 HCV感染者自发清除与年龄有关,感染时年龄越小,越容易清除病毒,而IL-28B基因对我国HCV感染者自发清除的影响不明显,此外IL-28B基因与慢性丙型肝炎病毒感染患者的基线HCV RNA水平无明显相关性。展开更多
慢性肝脏疾病是由机体的遗传因素和环境因素相互作用,经过多个阶段的发展而产生的。随着全基因组关联研究（genome-wide association study,GWAS）在近年来的迅速发展,为探寻遗传易感基因的复杂性以及为临床肝病治疗提供相应理论依据及...慢性肝脏疾病是由机体的遗传因素和环境因素相互作用,经过多个阶段的发展而产生的。随着全基因组关联研究（genome-wide association study,GWAS）在近年来的迅速发展,为探寻遗传易感基因的复杂性以及为临床肝病治疗提供相应理论依据及科学指导方面提供了有力的保障,因而可以在复杂性肝病鉴定基因的常见变异中发挥至关重要的作用。展开更多
IL-28b基因多态性与丙型肝炎病毒(hepatitis C virus,HCV)自发清除、慢性丙型肝炎发病率及IFN-α为基础的治疗效果之间的关系已非常明确,与乙型肝炎病毒(hepatitis B virus,HBV)感染及治疗之间的关系也正在研究当中,这为肝炎患者的个体...IL-28b基因多态性与丙型肝炎病毒(hepatitis C virus,HCV)自发清除、慢性丙型肝炎发病率及IFN-α为基础的治疗效果之间的关系已非常明确,与乙型肝炎病毒(hepatitis B virus,HBV)感染及治疗之间的关系也正在研究当中,这为肝炎患者的个体化治疗提供了新的依据。本文就IL-28b基因多态性、IFN-α为基础的治疗法及肝炎的个体化治疗三者之间的关系以及IL-28b单核甘酸多态性检测概况进行评述。展开更多
目的探讨IL-28B单核苷酸基因多态性与慢性乙型肝炎(CHB)干扰素疗效的相关性。方法选取300例HBeAg阳性CHB患者,给予聚乙二醇化干扰素α(Peg-INF-α)规范治疗48周后以PCR法对IL-28B SNP rs12979860及IL-28B SNP rs8099917基因分型进行检...目的探讨IL-28B单核苷酸基因多态性与慢性乙型肝炎(CHB)干扰素疗效的相关性。方法选取300例HBeAg阳性CHB患者,给予聚乙二醇化干扰素α(Peg-INF-α)规范治疗48周后以PCR法对IL-28B SNP rs12979860及IL-28B SNP rs8099917基因分型进行检测。结果治疗后HBV DNA定量、ALT、AST水平明显较治疗前下降(P<0.05),HBeAg转移率53.13%,随访1年后应答率49.44%;Peg-INF-α应答患者与非应答患者IL-28B SNP rs12979860基因型CC、CT、TT分布及等位基因C、T频率比较差异无统计学意义(P>0.05),IL-28B SNP rs8099917基因型TT、TG分布及等位基因T、G频率比较差异具有统计学意义(P<0.05)。结论 IL-28B SNP rs8099917可能对干扰素治疗的应答反应性形成影响,其中等位基因G的频率升高可能提示着干扰素的成功应答,因而检测IL-28B SNP rs8099917对干扰素治疗的CHB患者治疗疗效有一定预测价值。展开更多
基金Supported by Grants from the National Natural Science Foundationof China,No.81072342the National Pre-973 Program Projects,No.2009CB526411
文摘Objective To investigate the relationship between single nucleotide polymorphisms(SNPs) of the interleukin-4(IL-4) gene and outcome of hepatitis B virus(HBV) infection in a Chinese Han population.Methods Total of 501 patients with chronic hepatitis B virus(HBV) infection and 301 controls with selflimiting HBV infection were studied. Three tag SNPs in the IL-4 gene(rs2227284G/T, rs2243283C/G and rs2243288A/G) were genotyped by the Multiplex snapshot technique. The genotype and allele frequencies were calculated and analyzed.Results The three SNPs showed no significant genotype/allele associations with chronic HBV infection. Overall allele P values were: rs2227284, P = 0.655, odds ratio(OR) [95% confidence interval(CI)] = 1.070(0.793-1.445); rs2243283, P = 0.849, OR(95% CI) = 0.976(0.758-1.257); rs2243288, P = 0.659, OR(95% CI) = 1.060(0.818-1.375). Overall genotype P values were: rs2227284, P = 0.771; rs2243283, P = 0.571; rs2243288, P = 0.902. There were no statistically significant differences between patients with chronic HBV infection and controls. Haplotypes generated by these three SNPs also had no significant differences between the two groups. Conclusions The three tag SNPs of IL-4 were not associated with the outcome of HBV infection in the Han Chinese population.
文摘AIM To investigate the impact of IL28 B and OAS gene polymorphisms on interferon treatment responses in children with chronic hepatitis B.METHODS We enrolled 52 children(between the ages of 4 and 18) with hepatitis B e antigen-negative chronic hepatitis B(CHB), who were treated with pegylated interferon alfa for 48 wk. Single nucleotide polymorphisms in the OAS1(rs1131476), OAS2(rs1293747),OAS3(rs2072136), OASL(rs10849829) and IL28B(rs12979860, rs12980275 and rs8099917) genes were studied to examine their associations with responses to IFN treatment in paediatric patients. We adopted two criteria for the therapeutic response, achieving an hepatitis B virus(HBV) DNA level < 2000 IU/m L and normalization of ALT activity(< 40 IU/L). To perform the analyses, we compared the patients in terms of achieving a partial response(PR) and a complete response(CR) upon measurement at the 24-wk posttreatment follow-up. RESULTS The PR and CR rates were 80.8% and 42.3%, respectively. Factors such as age, gender and liver histology had no impact on the type of response(partial or complete). A statistically significant relationship between higher baseline HBV DNA and ALT activity levels and lower rates of PR and CR was shown(P < 0.05). The allele association analysis revealed that only the IL-28 B rs12979860(C vs T) and IL28 B rs12980275(A vs G) markers significantly affected the achievement of PR(P = 0.021, OR = 3.3, 95%CI: 1.2-9.2 and P = 0.014, OR = 3.7, 95%CI: 1.3-10.1, respectively). However, in the genotype analysis, only IL-28 B rs12980275 was significantly associated with PR(AA vs AG-GG, P = 0.014, OR = 10.9, 95%CI: 1.3-93.9). The association analysis for CR showed that the TT genotype of IL28 B rs12979860 was present only in the no-CR group(P = 0.033) and the AA genotype of OASL rs10849829 was significantly more frequent in the noCR group(P = 0.044, OR = 0.26, 95%CI: 0.07-0.88). The haplotype analysis revealed significant associations between PR and CR and OAS haplotype(P = 0.0002 and P = 0.001, respectively), but no association with IL28 B haplotype was observed.CONCLUSION IL28 B and OAS polymorphisms are associated with different clinical outcomes in CHB children treated with interferon.
文摘Host genetic factors may predict the outcome and treatment response in hepatitis C virus（HCV）infection.One of these factors is the single nucleotide polymorphisms of the interleukin 28B（IL28B）gene.We sought to evaluate the outcome of pegylated interferon and ribavirin therapy in association with IL-28B rs8099917 and rsl2980275 in patients infected with HCV genotype 4.A total of 180 patients with chronic hepatitis C were selected from Egyptians who have received combined therapy with pegylated interferon and ribavirin for 6 months and their response was evaluated after follow-up at 0,6,12,24 and 48 weeks from the beginning of the therapy.Blood samples were collected from responders and non-responders.Genomic DNA was extracted from whole blood and genotyping was carried out by polymerase chain reaction and restriction fragment length polymorphism（PCR-RFLP）.Our results showed that TT genotype of rs8099917 was associated with higher sustained viral response（SVR）rates and G allele represented a risk factor for failure of response（OR=3.7,CI=1.8：7.64）while rs12980275 was not significantly associated with SVR in genotype 4 Egyptian patients.The determination of 1L-28B SNPs may be useful in enhancing correct prediction of SVR achievement in treating this group of genotype 4 patients.
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.
基金Supported by Grants from the Research Fund from University of Region of Joinville,FAP-UNIVILLE
文摘AIM:To analyze the role of rs12979860 and rs8099917polymorphisms in hepatitis C virus(HCV)genotype 1infection of Brazilians.METHODS:A total of 145 adult patients diagnosed with genotype 1 chronic hepatitis C(CHC)who had completed a 48-wk regimen of pegylated-interferonα-2a or-2b plus ribavirin combination therapy were recruited from six large urban healthcare centers and199 healthy blood donors(controls)from a single site between January 2010 and January 2012.Data on the patients’response to treatment was collected.Polymerase chain reaction-restriction fragment length polymorphism genotyping of the interleukin(IL)28B gene fragment encompassing the single nucleotide polymorphisms(SNPs)rs12979860(C/T)and rs8099917(T/G)was carried out for 79 of the CHC patients and 199 of the controls.Bi-directional amplicon sequencing of the two SNPs was carried out for the remaining 66 CHC patients.RESULTS:SNP rs12979860 genotyping was successful in 99.5%of the controls and 97.2%of the CHC patients,whereas the SNP rs8099917 genotyping was successful in 95.5%of the controls and 100%of the CHC patients.The genotype and allele distributions for both rs12979860 and rs8099917 were significantly different between the control and CHC patient groups,with significantly higher genotype frequencies of CC and TT in the controls(P=0.037 and 0.046,respectively)and of TT and GG in the CHC patients(P=0.0009and 0.0001,respectively).Analysis of the CHC patients who achieved sustained virological response(SVR)to treatment(n=55)indicated that the rs12979860 C allele and CC genotype were predictors of SVR(P=0.02).No significant correlation was found between rs8099917 genotypes and treatment response,but carriers of the T allele showed significantly higher rates of SVR(P=0.02).Linkage disequilibrium analysis of the group that achieved SVR showed a significant association between rs12979860 and rs8099917(P=0.07).CONCLUSION:The higher allele frequency of rs12979860 C and rs8099917 T observed in non-HCVinfected individuals may indicate a potential protective role for these IL28B-related polymorphisms.
文摘慢性肝脏疾病是由机体的遗传因素和环境因素相互作用,经过多个阶段的发展而产生的。随着全基因组关联研究（genome-wide association study,GWAS）在近年来的迅速发展,为探寻遗传易感基因的复杂性以及为临床肝病治疗提供相应理论依据及科学指导方面提供了有力的保障,因而可以在复杂性肝病鉴定基因的常见变异中发挥至关重要的作用。
文摘IL-28b基因多态性与丙型肝炎病毒(hepatitis C virus,HCV)自发清除、慢性丙型肝炎发病率及IFN-α为基础的治疗效果之间的关系已非常明确,与乙型肝炎病毒(hepatitis B virus,HBV)感染及治疗之间的关系也正在研究当中,这为肝炎患者的个体化治疗提供了新的依据。本文就IL-28b基因多态性、IFN-α为基础的治疗法及肝炎的个体化治疗三者之间的关系以及IL-28b单核甘酸多态性检测概况进行评述。
文摘目的探讨IL-28B单核苷酸基因多态性与慢性乙型肝炎(CHB)干扰素疗效的相关性。方法选取300例HBeAg阳性CHB患者,给予聚乙二醇化干扰素α(Peg-INF-α)规范治疗48周后以PCR法对IL-28B SNP rs12979860及IL-28B SNP rs8099917基因分型进行检测。结果治疗后HBV DNA定量、ALT、AST水平明显较治疗前下降(P<0.05),HBeAg转移率53.13%,随访1年后应答率49.44%;Peg-INF-α应答患者与非应答患者IL-28B SNP rs12979860基因型CC、CT、TT分布及等位基因C、T频率比较差异无统计学意义(P>0.05),IL-28B SNP rs8099917基因型TT、TG分布及等位基因T、G频率比较差异具有统计学意义(P<0.05)。结论 IL-28B SNP rs8099917可能对干扰素治疗的应答反应性形成影响,其中等位基因G的频率升高可能提示着干扰素的成功应答,因而检测IL-28B SNP rs8099917对干扰素治疗的CHB患者治疗疗效有一定预测价值。
