目的为中国急性乙型病毒性肝炎(乙肝)监测,筛选合适的抗乙肝病毒核心抗原抗体免疫球蛋白M(Immunoglobulin M Antibody to Hepatitis B Virus Core Antigen,Anti-HBc-IgM)检测试剂。方法选择市场销量较大的三种酶联免疫吸附试验Anti-HBc-...目的为中国急性乙型病毒性肝炎(乙肝)监测,筛选合适的抗乙肝病毒核心抗原抗体免疫球蛋白M(Immunoglobulin M Antibody to Hepatitis B Virus Core Antigen,Anti-HBc-IgM)检测试剂。方法选择市场销量较大的三种酶联免疫吸附试验Anti-HBc-IgM检测试剂,平行检测参比系统各3次,比较各试剂的组内相关系数(Intraclass Correlation Coefficient,ICC)、变异系数,以评价试剂的可靠性,绘制受试者工作特征曲线(Receiver Operating Characteristic,ROC),计算ROC下面积(Area Under Curve,AUC)、部分(Partial)AUC(pAUC)、固定特异度下灵敏度[Sensitivity at a Fix Specificity,Se(FPR=e)],以评价试剂的真实性。结果三种试剂的ICC均接近于1,一致性均好,两两比较中A试剂稳定性最好,变异性最小(Bootstrap法,P<0.05)。B试剂ROC位于最上方,AUC中位数最大,和A、C比较均有统计学意义(Bootstrap法,P<0.05);B和C、A试剂的pAUC中位数和Se(FPR=0.05)中位数差异无统计学意义。结论符合国家标准的三种试剂,以雅培试剂作为参照相比,综合评价结果,B试剂较好。展开更多
AIM: To establish a rapid, sensitive and specific immunogold assay for detection of hepatitis A virus infection.METHODS: Rabbit monoclonal antibodies to anti-human IgM and IgG (Dako) were dotted on a nitrocellulose me...AIM: To establish a rapid, sensitive and specific immunogold assay for detection of hepatitis A virus infection.METHODS: Rabbit monoclonal antibodies to anti-human IgM and IgG (Dako) were dotted on a nitrocellulose membrane (NCM) respectively to capture the human sera IgM and IgG. Then the captured antibodies would conjugate to HAV antigen, which was revealed by mouse anti-HAV IgG conjugated to gold particles. Final results were assessed by blind method.RESULTS: Sera from 96 patients with acute hepatitis were used for our study. Compared with well-recognized standard (Abbott Laboratory, USA), the sensitivity and specificity of IgM-DIGFA (self-made) were 91.3 % (42/46) and 96.0 %(48/50), and those of IgM-ELISA (Kehua, Shanghai) were 97.8 % (45/46) and 100.0 % (50/50). The identical results were produced from the study with reagents at different conditions, and the study was repeated in 15 negative sera and 10 positive sera. The serum anti-HAV IgG was tested with DIGFA at the same time. In comparison with ELISA,the sensitivity and specificity of DIGFA for IgG anti-HAV were 87.2 % (41/47) and 91.8 % (45/49), respectively.CONCLUSION: This assay can detect anti-HAV IgM and IgG simultaneously, and be done within 3 minutes. The simplicity, rapidity and specificity of the assay were useful for screening and epidemiological study.展开更多
文摘目的为中国急性乙型病毒性肝炎(乙肝)监测,筛选合适的抗乙肝病毒核心抗原抗体免疫球蛋白M(Immunoglobulin M Antibody to Hepatitis B Virus Core Antigen,Anti-HBc-IgM)检测试剂。方法选择市场销量较大的三种酶联免疫吸附试验Anti-HBc-IgM检测试剂,平行检测参比系统各3次,比较各试剂的组内相关系数(Intraclass Correlation Coefficient,ICC)、变异系数,以评价试剂的可靠性,绘制受试者工作特征曲线(Receiver Operating Characteristic,ROC),计算ROC下面积(Area Under Curve,AUC)、部分(Partial)AUC(pAUC)、固定特异度下灵敏度[Sensitivity at a Fix Specificity,Se(FPR=e)],以评价试剂的真实性。结果三种试剂的ICC均接近于1,一致性均好,两两比较中A试剂稳定性最好,变异性最小(Bootstrap法,P<0.05)。B试剂ROC位于最上方,AUC中位数最大,和A、C比较均有统计学意义(Bootstrap法,P<0.05);B和C、A试剂的pAUC中位数和Se(FPR=0.05)中位数差异无统计学意义。结论符合国家标准的三种试剂,以雅培试剂作为参照相比,综合评价结果,B试剂较好。
基金National Natural Science Foundation of China,No 30230320
文摘AIM: To establish a rapid, sensitive and specific immunogold assay for detection of hepatitis A virus infection.METHODS: Rabbit monoclonal antibodies to anti-human IgM and IgG (Dako) were dotted on a nitrocellulose membrane (NCM) respectively to capture the human sera IgM and IgG. Then the captured antibodies would conjugate to HAV antigen, which was revealed by mouse anti-HAV IgG conjugated to gold particles. Final results were assessed by blind method.RESULTS: Sera from 96 patients with acute hepatitis were used for our study. Compared with well-recognized standard (Abbott Laboratory, USA), the sensitivity and specificity of IgM-DIGFA (self-made) were 91.3 % (42/46) and 96.0 %(48/50), and those of IgM-ELISA (Kehua, Shanghai) were 97.8 % (45/46) and 100.0 % (50/50). The identical results were produced from the study with reagents at different conditions, and the study was repeated in 15 negative sera and 10 positive sera. The serum anti-HAV IgG was tested with DIGFA at the same time. In comparison with ELISA,the sensitivity and specificity of DIGFA for IgG anti-HAV were 87.2 % (41/47) and 91.8 % (45/49), respectively.CONCLUSION: This assay can detect anti-HAV IgM and IgG simultaneously, and be done within 3 minutes. The simplicity, rapidity and specificity of the assay were useful for screening and epidemiological study.
