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Arch Med Res ; 43(7): 555-62, 2012 Oct.
Article in English | MEDLINE | ID: mdl-23085447

ABSTRACT

BACKGROUND AND AIMS: Hepatitis C virus (HCV) has emerged as the major pathogen of liver disease worldwide. The aim of this study was to quantitate and evaluate the performance of HCV-NS4 antigen as an alternative approach for confirmation of viremia. METHODS: Detection of HCV-NS4 was assessed in 883 patients with chronic hepatitis C. Areas under the ROC curves (AUC) were used to assess and compare diagnostic accuracy of ELISA for HCV-NS4 with quantitative HCV-RNA as a gold standard. RESULTS: HCV-NS4 was identified at 27 kDa using Western blot. AUC for HCV-NS4 detection was 0.95 for all patients with different liver pathologies: 0.93 for liver fibrosis (LF), 0.95 for liver cirrhosis (LC) and 0.98 for hepatocellular carcinoma (HCC). The mean ± SD (µg/mL) of HCV-NS4 in LF was 94.2 ± 55.6; in LC was 99.3 ± 64.8 and in HCC was 124.9 ± 70.3. CONCLUSIONS: HCV-NS4 antigen detection using ELISA is a reliable test in the confirmation of HCV infection.


Subject(s)
Hepatitis C Antigens/analysis , Hepatitis C, Chronic/diagnosis , Liver Diseases/virology , Viral Nonstructural Proteins/analysis , Adult , Blotting, Western , Carcinoma, Hepatocellular/complications , Carcinoma, Hepatocellular/immunology , Carcinoma, Hepatocellular/virology , Egypt , Enzyme-Linked Immunosorbent Assay , Female , Hepacivirus/immunology , Hepacivirus/isolation & purification , Hepatitis C Antigens/immunology , Hepatitis C, Chronic/complications , Hepatitis C, Chronic/immunology , Humans , Liver Cirrhosis/complications , Liver Cirrhosis/immunology , Liver Cirrhosis/virology , Liver Diseases/complications , Liver Diseases/immunology , Liver Neoplasms/complications , Liver Neoplasms/immunology , Liver Neoplasms/virology , Male , Middle Aged , Viral Nonstructural Proteins/immunology , Viremia/complications , Viremia/diagnosis , Viremia/immunology , Young Adult
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