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Antiviral drugs in chronic hepatitis B: review and meta-analysis
M Malaguarnera1, S Restuccia, L Ferlito
1Department of Internal Medicine and Geriatrics, University of Catania, Italy.
Abstract:
Many researchers have attempted to identify the drugs capable of acting on the viral replication cycle and maintaining clinical remission in chronic hepatitis B. We evaluated the efficacy of antiviral drugs in chronic hepatitis B, by examination of 20 controlled and non-controlled trials conducted between 1985 and 1996. In chronic hepatitis B, adenine arabinoside and its monophosphate did not achieve satisfactory results, even though combination therapy with cortisone seemed to achieve very good results (remission rates ranging from 45% to 66% in patients treated). Lamivudine did not seem to furnish lasting effects in chronic hepatitis B, because many patients relapse after suspension of the treatment due to the appearance of HBV variants resistant to the drug. Contrasting results were observed with famciclovir. Treatment of chronic hepatitis B, with this drug seemed capable of reducing HBV-DNA serum levels by a mean of 50% compared to pretreatment values, with normal alanine aminotransferase levels in about 30% of treated patients. Ganciclovir treatment of chronic hepatitis B seemed to furnish good, but transient, results. Even if no antiviral drug represented a valid alternative to interferon, antivirals may become the drugs of choice in chronic hepatitis B, because they are aimed at the etiology of disease.
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