In vitro activities of terbinafine against cutaneous isolates of Candida albicans and other pathogenic yeasts

被引:90
作者
Ryder, NS [1 ]
Wagner, S [1 ]
Leitner, I [1 ]
机构
[1] Novartos Res Inst, A-1235 Vienna, Austria
关键词
D O I
10.1128/AAC.42.5.1057
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Terbinatine is active in vitro against a wide range of pathogenic fungi, including dermatophytes, molds, dimorphic fungi, and some yeasts, but earlier studies indicated that the drug had little activity against Candida albicans, In contrast, clinical studies have shown topical and oral terbinafine to be active in cutaneous candidiasis and Candida nail infections. In order to define the anti-Candida activity of terbinafine, we tested the drug against 350 fresh clinical isolates and additional strains by using a broth dilution assay standardized according to the guidelines of the National Committee for Clinical Laboratory Standards (NCCLS) M27-A assay. Terbinafine was found to have an MIC of 1 mu g/ml for reference C, albicans strains. For 259 clinical isolates, the MIC at which 50% of the isolates are inhibited (MIC50) of terbinafine was 1 mu g/ml (fluconazole, 0.5 mu g/ml), and the MIC90 was 4 mu g/ml (fluconazole, 1 mu g/ml). Terbinafine was highly active against Candida parapsilosis (MIC90, 0.125 mu g/ml) and showed potentially interesting activity against isolates of Candida dubliniensis, Candida guilliermondii, Candida humicola, and Candida lusitaniae. It was not active against the Candida glabrata, Candida krusei, and Candida tropicalis isolates in this assay. Cryptococcus laurentii and Cryptococcus neoformans were highly susceptible to terbinafine, with MICs of 0.06 to 0.25 mu g/ml. The NCCLS macrodilution assay provides reproducible in vitro data for terbinafine against Candida and other yeasts. The MICs for C, albicans and C, parapsilosis are compatible with the known clinical efficacy of terbinafine in cutaneous infections, while the clinical relevance of its activities against the other species has yet to be determined.
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页码:1057 / 1061
页数:5
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