BACKGROUND: Recently, a novel quantitative HCVcoreAg immunoassay developed for commercialisation by Abbott has become available in Europe and Asia. OBJECTIVES: We evaluated the correlation of HCV-RNA and HCVcoreAg and investigated the stability of HCVcoreAg and HCV-RNA. STUDY DESIGN: HCVcoreAg was quantified by a novel fully automated immunoassay (Architect HCVAg, Abbott, Germany). HCV-RNA quantification was performed either using the Cobas-TaqMan assay or Amplicor-HCV-Monitor (Roche-Diagnostics, Germany). Correlation of HCVcoreAg with HCV-RNA was studied cross-sectionally and longitudinally in untreated patients followed for up to 8 years. Stability of HCVcoreAg and HCV-RNA was evaluated in plasma and whole blood stored for up to 96 h at different conditions. RESULTS: HCVcoreAg showed good correlation with HCV-RNA in all 118 cross-sectional tested samples irrespective of the HCV genotype (r=0.75). In the majority but not all of the 10 longitudinally studied patients HCVcoreAg also demonstrated a good correlation with HCV-RNA. HCVcoreAg was stable in plasma at 4, 20, and 37 degrees C for up to 96 h, whereas HCV-RNA significantly declined at 37 degrees C. In whole blood, HCVcoreAg and HCV-RNA levels declined at all conditions with exception of HCVcoreAg at 37 degrees C. HCVcoreAg was stable after 1-5 freezing/thawing cycles and not light-sensitive. CONCLUSIONS: HCVcoreAg represents a stable and reliable marker of viral replication showing a good correlation with HCV-RNA irrespective of the HCV genotype. HCVcoreAg determination can be used to confirm viral replication and monitor viral load or acquisition of HCV over time.
BACKGROUND: Recently, a novel quantitative HCVcoreAg immunoassay developed for commercialisation by Abbott has become available in Europe and Asia. OBJECTIVES: We evaluated the correlation of HCV-RNA and HCVcoreAg and investigated the stability of HCVcoreAg and HCV-RNA. STUDY DESIGN: HCVcoreAg was quantified by a novel fully automated immunoassay (Architect HCVAg, Abbott, Germany). HCV-RNA quantification was performed either using the Cobas-TaqMan assay or Amplicor-HCV-Monitor (Roche-Diagnostics, Germany). Correlation of HCVcoreAg with HCV-RNA was studied cross-sectionally and longitudinally in untreated patients followed for up to 8 years. Stability of HCVcoreAg and HCV-RNA was evaluated in plasma and whole blood stored for up to 96 h at different conditions. RESULTS: HCVcoreAg showed good correlation with HCV-RNA in all 118 cross-sectional tested samples irrespective of the HCV genotype (r=0.75). In the majority but not all of the 10 longitudinally studied patients HCVcoreAg also demonstrated a good correlation with HCV-RNA. HCVcoreAg was stable in plasma at 4, 20, and 37 degrees C for up to 96 h, whereas HCV-RNA significantly declined at 37 degrees C. In whole blood, HCVcoreAg and HCV-RNA levels declined at all conditions with exception of HCVcoreAg at 37 degrees C. HCVcoreAg was stable after 1-5 freezing/thawing cycles and not light-sensitive. CONCLUSIONS: HCVcoreAg represents a stable and reliable marker of viral replication showing a good correlation with HCV-RNA irrespective of the HCV genotype. HCVcoreAg determination can be used to confirm viral replication and monitor viral load or acquisition of HCV over time.
Authors: V Descamps; A Op de Beeck; C Plassart; E Brochot; C François; F Helle; M Adler; N Bourgeois; D Degré; G Duverlie; S Castelain Journal: J Clin Microbiol Date: 2011-12-07 Impact factor: 5.948
Authors: Rehab I Moustafa; Juliano G Haddad; Lydia Linna; Xavier Hanoulle; Véronique Descamps; Ahmed Atef Mesalam; Thomas F Baumert; Gilles Duverlie; Philip Meuleman; Jean Dubuisson; Muriel Lavie Journal: J Virol Date: 2018-09-26 Impact factor: 5.103
Authors: Muriel Lavie; Stéphane Sarrazin; Roland Montserret; Véronique Descamps; Thomas F Baumert; Gilles Duverlie; Karin Séron; François Penin; Jean Dubuisson Journal: J Virol Date: 2014-07-02 Impact factor: 5.103