Suppression of HHV-8 viremia by foscarnet in an HIV-infected patient with Kaposi's sarcoma and HHV-8 associated hemophagocytic syndrome.
1998
: Human herpes virus 8 (HHV-8) seems to be involved in the pathogenesis of Kaposi s sarcoma. In vitro, antiviral drugs with activity against herpes viruses also can suppress HHV-8, however, little is known about the antiviral activity against HHV-8 in vivo. In this report we describe the effects of foscarnet on HHV-8 viremia in an HIV-infected patient with disseminated Kaposi s sarcoma and a presumably HHV-8 associated hemophagocytic syndrome. HHV-8 DNA could be detected in this patient by PCR in peripheral blood mononuclear cells (PBMC), in bronchoalveolar fluid and tumor biopsies. After initiation of foscarnet because of a severe hemophagocytic syndrome HHV-8 PCR turned negative in PBMC, but stayed positive in pleural effusions and in a tumor biopsy. After termination of foscarnet therapy HHV-8 DNA in PBMC persistently reappeared. Under treatment with foscarnet the hemophagocytic syndrome dramatically improved, suggesting that HHV-8 had a pathogenetic role in this syndrome.
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