AIM:To test whether the status of positive cytomegalovirus(CMV) DNA detection adds to the predictive value of IL28B and to further categorize C/T allele carriers.METHODS:This study included 166 chronic hepatitis C(CHC...AIM:To test whether the status of positive cytomegalovirus(CMV) DNA detection adds to the predictive value of IL28B and to further categorize C/T allele carriers.METHODS:This study included 166 chronic hepatitis C(CHC) patients who received combined interferon and ribavirin therapy for 48 wk,84 spontaneous hepatitis C virus(HCV) resolvers who were positive for IgG anti-HCV antibody and negative for HCV RNA,and 100 healthy subjects who were negative for both HCV antibodies and RNA as controls.Genomic DNA from peripheral blood was used for IL28B rs.12979860 single nucleotide polymorphism(SNP) and CMV DNA detection.A 139 bp fragment containing IL28B SNP was amplified in all subjects by polymerase chain reaction using a specifically designed primer.Then the IL28B rs.12979860 SNP was detected by restriction fragment length polymorphism(RFLP) genotyping.The presence of CMV DNA was tested by amplification of the gB1 gene using nested polymerase chain reaction.The role of CMV and IL28B rs.12979860 SNP genotypes in determining the response rate to combined interferon therapy and clinical status of patients were statistically analyzed.RESULTS:Current data showed that 67% of patients carrying the IL28B 12979860 C/C allele had a sustained viral response(SVR) while the genotypes C/T and TT were associated with lower SVR rates,50% and 48%,respectively.SVR rates for the C/C allele were lower than other HCV genotypes and/or other populations.Genotype CC was associated with the response to interferon(P = 0.025).Genotype C/C was reduced from 48% in controls to 14% in CHC patients suggesting its protective role against progression to chronicity.The majority of spontaneously cleared subjects(86%) were C/C,confirming its protective role.The C/T allele was present in 71% of CHC patients compared with 38% of controls,so the use of IL28B SNP genotyping only in these patients may be of little value as a predictor of response.CMV reactivation occurred in 40% of CHC patients.Co-infection with CMV seriously diminished the response to interf展开更多
Interleukin (IL) 28B genetic polymorphism is significantly associated with the sustained virological response rate in patients with chronic hepatitis C treated with pegylated interferon-α (PEG-IFN) plus ri...Interleukin (IL) 28B genetic polymorphism is significantly associated with the sustained virological response rate in patients with chronic hepatitis C treated with pegylated interferon-α (PEG-IFN) plus ribavirin and with spontaneous hepatitis C virus clearance. However, a consensus on the relationship between IL28B genetic polymorphism and the favorable outcome of chronic hepatitis B virus infection defined by hepatitis B e antigen seroconversion, and/or hepatitis B surface antigen seroclearance in patients treated with interferon or PEG-IFN has not been reached. Several reports failed to show a positive association, while some studies demonstrated a positive association in certain subject settings. More prospective studies including large cohorts are needed to determine the possible association between IL28B genetic polymorphism and the outcome of interferon or PEG-IFN treatment for chronic hepatitis B.展开更多
目的了解艾滋病患者抗病毒疗效的影响因素。方法选择2016年1月至2018年6月在北海市人民医院艾滋病门诊初治且依从性良好的107例艾滋病患者,根据患者是否自愿接受中药治疗分为两组,接受高效抗反转录病毒治疗(highly active anti-retrovir...目的了解艾滋病患者抗病毒疗效的影响因素。方法选择2016年1月至2018年6月在北海市人民医院艾滋病门诊初治且依从性良好的107例艾滋病患者,根据患者是否自愿接受中药治疗分为两组,接受高效抗反转录病毒治疗(highly active anti-retroviral therapy,HAART)联合平肝解毒方剂治疗组(42例),单纯接受HAART组(65例)。比较两组患者在治疗48周时的病毒学和免疫学应答情况。采用聚合酶链反应产物直接测序法对白细胞介素-28B(interleukin-28B,IL-28B)rs12979860进行基因分型。采用logistic回归分析艾滋病患者抗病毒疗效的影响因素。组间比较采用独立样本t检验、配对样本t检验或χ^(2)检验。结果治疗48周时,42例HAART联合平肝解毒方剂组患者中,41例(97.62%)获得了病毒学应答,65例单纯HAART组患者中有58例(89.23%)获得了病毒学应答,差异无统计学意义(χ^(2)=0.100,P>0.05);HAART联合平肝解毒方剂组患者的CD4^(+)T淋巴细胞计数增加了(244.32±101.83)/μL,与单纯HAART组患者的(211.56±112.50)/μL相比,差异无统计学意义(t=1.522,P>0.05)。92例携带IL-28B CC基因型的患者中,88例(95.65%)获得了病毒学应答,而15例携带IL-28B非CC基因型患者中有11例获得了病毒学应答,差异无统计学意义(χ^(2)=0.394,P>0.05)。携带IL-28B CC基因型患者的CD4^(+)T淋巴细胞计数增加了(229.72±101.17)/μL,高于携带IL-28B非CC基因型患者的(173.40±89.64)/μL,差异有统计学意义(t=2.028,P=0.045)。多因素logistic回归分析显示:基线CD4^(+)T淋巴细胞计数≤200/μL、IL-28B CC基因型、HAART方案中含蛋白酶抑制剂有助于提高抗病毒的疗效。结论基线CD4^(+)T淋巴细胞计数≤200/μL、IL-28B CC基因型、HAART方案中含蛋白酶抑制剂是艾滋病患者抗病毒疗效的影响因素。展开更多
基金Supported by Misr El-Khair Foundation,Cairo,Egypt
文摘AIM:To test whether the status of positive cytomegalovirus(CMV) DNA detection adds to the predictive value of IL28B and to further categorize C/T allele carriers.METHODS:This study included 166 chronic hepatitis C(CHC) patients who received combined interferon and ribavirin therapy for 48 wk,84 spontaneous hepatitis C virus(HCV) resolvers who were positive for IgG anti-HCV antibody and negative for HCV RNA,and 100 healthy subjects who were negative for both HCV antibodies and RNA as controls.Genomic DNA from peripheral blood was used for IL28B rs.12979860 single nucleotide polymorphism(SNP) and CMV DNA detection.A 139 bp fragment containing IL28B SNP was amplified in all subjects by polymerase chain reaction using a specifically designed primer.Then the IL28B rs.12979860 SNP was detected by restriction fragment length polymorphism(RFLP) genotyping.The presence of CMV DNA was tested by amplification of the gB1 gene using nested polymerase chain reaction.The role of CMV and IL28B rs.12979860 SNP genotypes in determining the response rate to combined interferon therapy and clinical status of patients were statistically analyzed.RESULTS:Current data showed that 67% of patients carrying the IL28B 12979860 C/C allele had a sustained viral response(SVR) while the genotypes C/T and TT were associated with lower SVR rates,50% and 48%,respectively.SVR rates for the C/C allele were lower than other HCV genotypes and/or other populations.Genotype CC was associated with the response to interferon(P = 0.025).Genotype C/C was reduced from 48% in controls to 14% in CHC patients suggesting its protective role against progression to chronicity.The majority of spontaneously cleared subjects(86%) were C/C,confirming its protective role.The C/T allele was present in 71% of CHC patients compared with 38% of controls,so the use of IL28B SNP genotyping only in these patients may be of little value as a predictor of response.CMV reactivation occurred in 40% of CHC patients.Co-infection with CMV seriously diminished the response to interf
文摘Interleukin (IL) 28B genetic polymorphism is significantly associated with the sustained virological response rate in patients with chronic hepatitis C treated with pegylated interferon-α (PEG-IFN) plus ribavirin and with spontaneous hepatitis C virus clearance. However, a consensus on the relationship between IL28B genetic polymorphism and the favorable outcome of chronic hepatitis B virus infection defined by hepatitis B e antigen seroconversion, and/or hepatitis B surface antigen seroclearance in patients treated with interferon or PEG-IFN has not been reached. Several reports failed to show a positive association, while some studies demonstrated a positive association in certain subject settings. More prospective studies including large cohorts are needed to determine the possible association between IL28B genetic polymorphism and the outcome of interferon or PEG-IFN treatment for chronic hepatitis B.
