Antifungal Activity of Geldanamycin Alone or in Combination with Fluconazole Against Candida species |
| |
Authors: | Jinqing Zhang Wei Liu Jingwen Tan Yi Sun Zhe Wan Ruoyu Li |
| |
Affiliation: | 1. Department of Dermatology, Peking University First Hospital, Research Center for Medical Mycology, Peking University, Beijing, People’s Republic of China 2. Department of Dermatology and Venereology, Research Center for Medical Mycology, Peking University First Hospital, No.8, Xishiku St., West District Beijing, 100034, People’s Republic of China
|
| |
Abstract: | A standardized broth microdilution method was used to test the antifungal activity of geldanamycin (GA), an inhibitor of heat shock protein 90 (Hsp90), alone or in combination with the antifungal agent fluconazole (FLC) against 32 clinical isolates of Candida spp. In addition, a disk diffusion test was also used to evaluate the antifungal effect of these two drugs against Candida spp. by measuring the inhibition zone diameters. We found that the range of minimal inhibitory concentrations (MICs) for GA alone against Candida spp. was 3.2–12.8 mg/L and the geometric mean of MICs was 6.54 mg/L. In addition, the combination of GA with FLC showed synergistic effects in vitro against 2 FLC-susceptible and 6 FLC-resistant isolates of C. albicans. As for the other isolates, indifference but no antagonism was observed. In the disk diffusion assay, the diameter of inhibition zones for FLC combined with GA against FLC-resistant C. albicans isolates was 30 mm, while no inhibition was observed with FLC alone. These results demonstrate that GA possesses antifungal activity against Candida spp., and the combination of GA with FLC shows in vitro synergistic activity against some C. albicans isolates, especially those resistant to FLC. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|