In vitro antifungal activity of saperconazole (R 66905) against Candida and Torulopsis.

The susceptibility of several strains of Candida and Torulopsis to saperconazole, a new triazole antifungal compound, was compared to that of ketoconazole. The MICs of the two antifungal agents were determined against 70 strains of Candida albicans, 10 strains of C. guilliermondii, 10 strains of C. krusei, 10 strains of C. parapsilosis, 10 strains of C. pseudotropicalis, 10 strains of C. tropicalis and 15 strains of Torulopsis glabrata. The fungistatic activity was evaluated by the agar dilution method using BHI and casitone media after incubation for 48 hours at 28-30 degrees C. The in vitro activity of saperconazole was similar to that of ketoconazole for most of the Candida spp. tested except for C. krusei in particular. An MIC of less than or equal to 3.12 micrograms/ml for saperconazole was found with 92% of the C. albicans strains tested. In contrast, T. glabrata was more susceptible to ketoconazole.