BACKGROUND: Hepatitis C viral (HCV) infection has been shown to lead to auto-immune phenomena. AIMS: We review the prevalence of serological auto-immune disorders associated to HCV infection and to clarify their clinical significance. METHODS: Literature review. RESULTS: The serological immune response to HCV infection may include the development of cryoglobulinemia, rheumatoid factor, anticardiolipin, antinuclear, anti-liver-kidney-microsome 1 and anti-smooth muscle antibodies. Serological auto-immune manifestations were explained by the lymphotropism of HCV and the polyclonal activation of B cells. Interferon-based treatment of HCV infection may precipitate or exacerbate the associated auto-immune disease. CONCLUSION: In patients with serological auto-immune disorders associated with HCV infection, a very careful analysis of clinical and biological features is needed. Application of classification criteria of systemic auto-immune diseases and testing more specific antibodies can resolve this point.
BACKGROUND:Hepatitis C viral (HCV) infection has been shown to lead to auto-immune phenomena. AIMS: We review the prevalence of serological auto-immune disorders associated to HCV infection and to clarify their clinical significance. METHODS: Literature review. RESULTS: The serological immune response to HCV infection may include the development of cryoglobulinemia, rheumatoid factor, anticardiolipin, antinuclear, anti-liver-kidney-microsome 1 and anti-smooth muscle antibodies. Serological auto-immune manifestations were explained by the lymphotropism of HCV and the polyclonal activation of B cells. Interferon-based treatment of HCV infection may precipitate or exacerbate the associated auto-immune disease. CONCLUSION: In patients with serological auto-immune disorders associated with HCV infection, a very careful analysis of clinical and biological features is needed. Application of classification criteria of systemic auto-immune diseases and testing more specific antibodies can resolve this point.