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Comparative efficacies of amphotericin B, triazoles, and combination of both as experimental therapy for murine trichosporonosis.

By E J Anaissie, R Hachem, N C Karyotakis, A Gokaslan, M C Dignani, L C Stephens and C K Tin-U


We assessed the activities of amphotericin B deoxycholate, liposomal amphotericin B, fluconazole, and SCH 39304 against 10 strains of Trichosporon beigelii in mice with hematogenous infections. Cyclophosphamide-immunosuppressed CF1 male mice were challenged intravenously with a lethal inoculum of T. beigelii (5 x 10(6) conidia per mouse) and were assigned to different treatment groups or were left untreated. Amphotericin B deoxycholate (1 mg/kg of body weight and liposomal amphotericin B (1, 5, and 10 mg/kg) were given parenterally once daily. Escalating doses (5, 10, and 20 mg/kg/day) of fluconazole and SCH 39304 were tested. We also compared the activity of amphotericin B deoxycholate plus fluconazole (1 and 10 mg/kg/day, respectively) with that of each agent alone. Fluconazole significantly prolonged the survival of mice infected with each of the 10 strains tested. Amphotericin B deoxycholate achieved various responses, improving the outcomes in mice infected with seven of the strains. Liposomal amphotericin B was not more effective than amphotericin B deoxycholate against the two strains tested. Both fluconazole and SCH 39304 reduced the kidney fungal counts in a dose-dependent pattern, with SCH 39304 being more active than fluconazole against one of the two strains tested. The activity of the combination of amphotericin B deoxycholate plus fluconazole appeared to be superior to that of either agent alone, especially in reducing the kidney fungal burden. Fluconazole is more active than amphotericin B deoxycholate against experimental murine trichosporonosis

Topics: Research Article
Year: 1994
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Provided by: PubMed Central
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