Influence of culture medium on susceptibility testing with BAY n 7133 and ketoconazole

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Abstract
The effect of four culture media (two complex and undefined [Sabouraud glucose and Kimmig] and two synthetic and defined [synthetic amino acid medium, fungal, and modified yeast nitrogen base]) on the activity in vitro of two newer azole compounds (BAY n 7133 and ketoconazole) was assessed with five strains each of Candida albicans, Candida parapsilosis, and Cryptococcus neoformans. Also, the nutritional adequacy of the four media was evaluated with the same 15 strains of yeastlike fungi. While the MICs of BAY n 7133 were higher in the complex media, the activity of ketoconazole was little affected. The Candida spp. grew least well and the C. neoformans grew best in yeast nitrogen base.