[Antithyroid peroxidase antibodies. Value of their assay before treatment of hepatitis C with interferon].
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Biomedical subjects
Publications and source records attributed to O Marcais.
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Acute and chronic autoimmune hepatitis are uncommon inflammatory liver diseases, mainly occurring in young women, in association with hypergammaglobulinemia and serum autoantibodies. Different types have been described: type 1 characterized by anti-smooth muscle and anti-nuclear antibodies; type 2 characterized by anti-LKM1 antibodies; type 3 characterized by anti-SLA antibodies. Other types, still not clearly defined, may exist. Autoimmune hepatitis are associated with HLA A1 B8 DR3 and HLA DR4. Without any treatment, the disease leads to cirrhosis and, uncommonly, to fulminant hepatitis. Large doses of corticosteroids usually allow to control the disease. Relapse of hepatitis is frequent after corticosteroid withdrawal. Concomitant administration of immunosuppressive agents such as azathioprine allows to reduce corticosteroid dosage and contributes to maintain the remission of the disease. Liver transplantation may be indicated in cases of severe cirrhosis or fulminant hepatitis.
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Several clinical or biological autoimmune disorders, particularly lupoid diseases, are associated with chronic hepatitis C. They may be exacerbated by alpha IFN, but they are not involved in the response to therapy.
Six months alpha IFN therapy was efficient for chronic viral hepatitis C in 31% patients after six months and in 17% after one year. Cirrhosis, low serum albumin or prealbumin levels and elevated IgA seric level were non responsiveness predictive factors.