Hepatitis C is a liver disease that is transmitted through contact with the blood of an infected person. An estimated 150 million individuals worldwide have been chronically infected with the hepatitis C virus(HCV). H...Hepatitis C is a liver disease that is transmitted through contact with the blood of an infected person. An estimated 150 million individuals worldwide have been chronically infected with the hepatitis C virus(HCV). Hepatitis C shows significant genetic variation in the global population, due to the high rate of viral RNA mutation. There are six variants of the virus(HCV genotypes 1, 2, 3, 4, 5, and 6), with 15 recorded subtypes that vary in prevalence across different regions of the world. A variety of devices are used to diagnose hepatitis C, including HCV antibody test, HCV viral load test, HCV genotype test and liver biopsy. Rapid, inexpensive, sensitive, and robust analytical devices are therefore essential for effective diagnosis and monitoring of disease treatment. This review provides an overview of current electrochemical immunosensor and genosensortechnologies employed in HCV detection.There are a limited number of publications showing electrochemical biosensors being used for the detection of HCV.Due to their simplicity,specificity,and reliability,electrochemical biosensor devices have potential clinical applications in several viral infections.展开更多
戊型肝炎病毒(hepatitis E virus,HEV)是引起全球多地区大规模流行和散发病例的急性病毒性肝炎的病原体,发展中国家尤为突出;我国是戊型肝炎(hepatitis E,HE)流行的高发区.HE是一种人畜共患病,猪是人HEV病毒的主要储库,因而HE已成为一...戊型肝炎病毒(hepatitis E virus,HEV)是引起全球多地区大规模流行和散发病例的急性病毒性肝炎的病原体,发展中国家尤为突出;我国是戊型肝炎(hepatitis E,HE)流行的高发区.HE是一种人畜共患病,猪是人HEV病毒的主要储库,因而HE已成为一个全球性的的公共卫生问题.对HEV的病毒学和基因组特征、临床表征、流行病学、主要抗原表位以及HEV诊断试剂和疫苗研制的进展进行了综述.展开更多
目的：比较3种丙型肝炎病毒（HCV）RNA荧光定量PCR检测试剂的临床应用性能。方法采用国产 A 试剂（磁珠分离法）、国产 B 试剂（荧光探针法）和目前国际临床广泛应用的 C试剂（内标法）同时检测110例丙型肝炎患者临床血液样本及梯度稀...目的：比较3种丙型肝炎病毒（HCV）RNA荧光定量PCR检测试剂的临床应用性能。方法采用国产 A 试剂（磁珠分离法）、国产 B 试剂（荧光探针法）和目前国际临床广泛应用的 C试剂（内标法）同时检测110例丙型肝炎患者临床血液样本及梯度稀释的强阳性标本，从试剂间的相关性、检测灵敏度、特异度等对结果进行对比分析。结果A 和 B、A 和 C、B 和 C 试剂间的相关系数分别为0．845、0．917、0．860（P 均＜0．01）。在3种方法均有数值的58例标本中，3种试剂所检出的 HCV RNA 水平比较差异无统计学意义（P ＞0．05）。但在低病毒载量（＜103 IU ／ml）组中，3种试剂灵敏度比较差异有统计学意义（P ＜0．01），C 试剂灵敏度最高，A 试剂次之，B 试剂最低。当病毒载量在2．00＆#215;103～2．00＆#215;106 IU ／ml 时，3种试剂的定量结果与理论值均有很好的相关性与重复性，其检测浓度的平均值与理论浓度的双对数线性相关系数分别为0．9983、0．9823、0．9999（P 均＜0．01）；当病毒载量为2．00＆#215;102 IU ／ml 时，C 试剂的检测结果最接近，A 试剂次之，B 试剂未能检出。结论C 试剂作为国际上广泛应用于临床 HCV RNA 定量检测的试剂，优势明显；国产 A 试剂总体性能优于 B 试剂，且费用较国外试剂低廉，性价比较高。展开更多
目的建立EB病毒衣壳抗原IgM抗体检测试剂国家参考品并制定质量标准。方法收集并筛选EB病毒衣壳抗原IgM抗体阳性和阴性血浆样本,建立EB病毒衣壳抗原IgM抗体检测试剂国家参考品并进行均匀性和稳定性研究,经10个实验室的协助标定,确定参考...目的建立EB病毒衣壳抗原IgM抗体检测试剂国家参考品并制定质量标准。方法收集并筛选EB病毒衣壳抗原IgM抗体阳性和阴性血浆样本,建立EB病毒衣壳抗原IgM抗体检测试剂国家参考品并进行均匀性和稳定性研究,经10个实验室的协助标定,确定参考品的质量标准。结果建立的EB病毒衣壳抗原IgM抗体检测试剂国家参考品包括阳性参考品6份、阴性参考品10份、重复性参考品1份和检测限参考品3份。参考品均匀性变异系数(coefficient of variation,CV)为3.1%,满足行业标准CV≤15.0%的要求;2~8℃放置7 d、室温放置3 d和反复冻融3次对参考品均无影响。质量标准为:阳性符合率应≥4/6,阴性符合率应为10/10,重复性(2个浓度水平)的检测结果应均为阳性且CV均≤15.0%,检测限参考品L1应为阳性,L2~L3不作要求。结论建立的EB病毒衣壳抗原IgM抗体检测试剂国家参考品可用于相关试剂研发的质量控制及评价。展开更多
基金Supported by Brazilian funding agencies(Sao Paulo Research Foundation-FAPESP and National Council for Scientific and Technological Development-CNPq)
文摘Hepatitis C is a liver disease that is transmitted through contact with the blood of an infected person. An estimated 150 million individuals worldwide have been chronically infected with the hepatitis C virus(HCV). Hepatitis C shows significant genetic variation in the global population, due to the high rate of viral RNA mutation. There are six variants of the virus(HCV genotypes 1, 2, 3, 4, 5, and 6), with 15 recorded subtypes that vary in prevalence across different regions of the world. A variety of devices are used to diagnose hepatitis C, including HCV antibody test, HCV viral load test, HCV genotype test and liver biopsy. Rapid, inexpensive, sensitive, and robust analytical devices are therefore essential for effective diagnosis and monitoring of disease treatment. This review provides an overview of current electrochemical immunosensor and genosensortechnologies employed in HCV detection.There are a limited number of publications showing electrochemical biosensors being used for the detection of HCV.Due to their simplicity,specificity,and reliability,electrochemical biosensor devices have potential clinical applications in several viral infections.
文摘戊型肝炎病毒(hepatitis E virus,HEV)是引起全球多地区大规模流行和散发病例的急性病毒性肝炎的病原体,发展中国家尤为突出;我国是戊型肝炎(hepatitis E,HE)流行的高发区.HE是一种人畜共患病,猪是人HEV病毒的主要储库,因而HE已成为一个全球性的的公共卫生问题.对HEV的病毒学和基因组特征、临床表征、流行病学、主要抗原表位以及HEV诊断试剂和疫苗研制的进展进行了综述.
文摘目的建立EB病毒衣壳抗原IgM抗体检测试剂国家参考品并制定质量标准。方法收集并筛选EB病毒衣壳抗原IgM抗体阳性和阴性血浆样本,建立EB病毒衣壳抗原IgM抗体检测试剂国家参考品并进行均匀性和稳定性研究,经10个实验室的协助标定,确定参考品的质量标准。结果建立的EB病毒衣壳抗原IgM抗体检测试剂国家参考品包括阳性参考品6份、阴性参考品10份、重复性参考品1份和检测限参考品3份。参考品均匀性变异系数(coefficient of variation,CV)为3.1%,满足行业标准CV≤15.0%的要求;2~8℃放置7 d、室温放置3 d和反复冻融3次对参考品均无影响。质量标准为:阳性符合率应≥4/6,阴性符合率应为10/10,重复性(2个浓度水平)的检测结果应均为阳性且CV均≤15.0%,检测限参考品L1应为阳性,L2~L3不作要求。结论建立的EB病毒衣壳抗原IgM抗体检测试剂国家参考品可用于相关试剂研发的质量控制及评价。
