The Treatment of Primary Biliary Cirrhosis

Fluconazole, a potent bis-triazole antimycotic drug, has been demonstrated to inhibit antipyrine metabolism, a cytochrome P-450 dependent process, in vivo in mice. Cyclosporine is metabolized by the cytochrome P-450 enzyme system in both mice and man. We investigated whether fluconazole had any effects on the metabolism of cyclosporine in vivo in mice. The effects of three different doses of fluconazole (1, 5, and 20 mg/kg) on the metabolism of cyclosporine in CD-1 mice were studied in single-dose experiments. Fluconazole produced significant dose-dependent decreases in the elimination rate constant and increases in the terminal half-life of cyclosporine. The 1 mg/kg dose caused a 26% prolongation of the terminal half-life and the 5 and 20 mg/kg dose prolonged the half-life by 72 and 187%, respectively. Fluconazole doses in the 1-5 mg/kg range are effective in mouse models of fungal infections. These results provide further in vivo evidence that fluconazole is a potent inhibitor of the cytochrome P-450 dependent enzyme system in mice. Future experimental studies in animals and humans are needed to evaluate possible metabolic drug-drug interactions involving fluconazole.

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Dose-dependent inhibition of cyclosporine metabolism in mice by fluconazole

Delfa

Xia²,

Blaschke³

1990

Can. J. Physiol. Pharmacol.

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The Treatment of Primary Biliary Cirrhosis

Cited by 1 publication

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Dose-dependent inhibition of cyclosporine metabolism in mice by fluconazole

Dose-dependent inhibition of cyclosporine metabolism in mice by fluconazole

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