Linalool modulates dermatophyte susceptibility to azole drugs
Hellen Aparecida Silva Ponte1, Maria Islaine de Oliveira Lima1, Edeltrudes de Oliveira Lima2
1Laboratory of Biochemistry, Academic Unit of Health, Education and Health Center, Federal University of Campina Grande, Cuité, Brazil.
Abstract:
This study investigated the monoterpene linalool and its resistance modulating activity involving ergosterol biosynthesis inhibitors (ketoconazole, fluconazole, and itraconazole) in strains of Microsporum spp. and Trichophyton spp. The minimum inhibitory concentration (MIC) of test-drugs were determined by microdilution. The modulating effect of linalool was evaluated by determining the MIC of the antifungals in the presence of subinhibitory concentrations of linalool. We also investigated the association effect (checkerboard) of linalool together with ketoconazole and itraconazole. The fungi became more sensitive to ketoconazole and itraconazole in the presence of linalool. The linalool and azole drug associations presented synergism.
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