Anti-hepatitis C virus activity of geranylgeranylacetone treatment in hepatitis C-infected patients
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Background. Geranylgeranylacetone (GGA), which is an isoprenoid compound, has been used orally as an antiulcer drug inJapan. GGA induces antiviral gene expression by stimulating the formation of interferon-stimulated gene factor 3 in humanhepatoma cells. This study verified the anti-hepatitis C virus (HCV) activity of GGA in chronic hepatitis C-infected patients.Methods. The present prospective study included 20 consecutive anti-HCV antibody-positive, HCV-genotype 1b, and chronicgastritis patients who visited Nagasaki University Hospital between January 1999 and December 1999. GGA (150 mg per day,which is the dose generally used for chronic gastritis) was taken orally for four weeks. We evaluated HCV-RNA titers and otherclinical parameters at pretreatment, posttreatment, and at the endpoint of the study. Pretreatment was the beginning point ofGGA treatment. Posttreatment was the termination point of GGA treatment. The endpoint was the point four weeks after theposttreatment point.Results. All patients completed four weeks of GGA treatment and four weeks of observation. HCV-RNA titers at postpointwere not significantly diminished compared to those at pretreatment. However, HCV-RNA titers were significantly diminishedat endtreatment compared to pretreatment. Unfortunately, we did not observe a case with no titer of HCV-RNA. Alanineaminotransferase values and other parameters were not affected by GGA treatment.Conclusion. GGA has anti-HCV activities in chronic hepatitis C-infected patients. In the future, it will be necessary to examinethe clinical effectiveness of the combination of treatment with both GGA and interferon in HCV patients.
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