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KMID : 1160220030310020095
Mycobiology
2003 Volume.31 No. 2 p.95 ~ p.98
In Vitro Antifungal Activities of Amphotericin B, Fluconazole, Itraconazole, Terbinafine, Caspofungin, Voriconazole, and Posaconazole against 30 Clinical Isolates of Cryptococcus neoformans var. neoformancs
Lee Young-Ki

Fothergill Annette W.
Abstract
Aantifungal agents were tested against 30 clinical isolates of Cryptococcus neoformans var. neoformans using the NCCLS method (M27-A2). Posaconazole, itraconazole and amphotericin B had lower MIC than the remaining four antifungal agents. The MIC result for posaconazole was over 220-fold lower active than fluconazole. Fluconazole MICs for most isolates fell within the dose-dependant range. The overall MIC ranges and MIC50s were amphotericin B (0.03-0.25; 0.25), fluconazole (0.5-64; 16), itraconazole (0.015-1; 0.125), terbinafine (0.06->2; 1), caspofungin (8-32; 32), voriconazole (0.015-0.5; 0.25), and posaconazole (0.015-0.25; 0.06 ¥ìg/ml), respectively. In conclusion, the MIC50s of these drugs did not exhibit any sign of an upward shift with the exception of fluconazole and tendency cross-resistance between the seven drugs was not observed. We conclude that in vitro resistance to antifungal agents has not significantly changed despite the recent wide-spread use of triazoles for long-term treatment of Cryptococcal meningitis.
KEYWORD
Antifungal agents, Cryptococcal meningitis, Cryptococcus neoformans, MIC
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