Skip to main content
Article thumbnail
Location of Repository

Neutralizing antibody response during acute and chronic hepatitis C virus infection

By Carine Logvinoff, M E Major, D Oldach, S Heyward, A Talal, Peter Balfe, S M Feinstone, H Alter, C M Rice and Jane A McKeating

Abstract

Little is known about the role of Abs in determining the outcome of hepatitis C virus (HCV) infection. By using infectious retroviral pseudotypes bearing HCV glycoproteins, we measured neutralizing Ab (nAb) responses during acute and chronic HCV infection. In seven acutely infected health care workers, only two developed a nAb response that failed to associate with viral clearance. In contrast, the majority of chronically infected patients had nAbs. To determine the kinetics of strain-specific and crossreactive nAb emergence, we studied patient H, the source of the prototype genotype 1a H77 HCV strain. An early weak nAb response, specific for the autologous virus, was detected at seroconversion. However, neutralization of heterologous viruses was detected only between 33 and 111 weeks of infection. We also examined the development of nAbs in 10 chimpanzees infected with H77 clonal virus. No nAb responses were detected in three animals that cleared virus, whereas strain-specific nAbs were detected in six of the seven chronically infected animals after approximately 50 weeks of infection. The delayed appearance of high titer crossreactive nAbs in chronically infected patients suggests that selective mechanism(s) may operate to prevent the appearance of these Abs during acute infection. The long-term persistence of these nAbs in chronically infected patients may regulate viral replication

Topics: R Medicine (General), QR355 Virology, QR180 Immunology, QR Microbiology
Year: 2004
OAI identifier: oai:eprints.bham.ac.uk:496

Suggested articles


To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.