In vitro activity of a new pneumocandin antifungal agent, L-733,560, against azole-susceptible and -resistant Candida and Torulopsis species

J. A. Vazquez, M. Lynch, J. D. Sobel

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

The activity of a new water-soluble pneumocandin, L-733,560, was evaluated with 107 pathogenic strains of Candida and Torulopsis, which included 23 strains with known multi-azole resistance patterns. In vitro evaluation of L- 733,560 activity was performed by a broth microdilution method, and the activity was compared with the activities of amphotericin B, fluconazole, ketoconazole, itraconazole, and flucytosine. The mean MICs of L-733,560 were 0.15 μg/ml for Candida albicans, 0.2 μg/ml for Torulopsis glabrata, 0.28 μg/ml for C. tropicalis, 0.36 μg/ml for C. kefyr, 0.70 μg/ml for C. lusitaniae, 0.72 μg/ml for C. parapsilosis, 0.78 μg/ml for C. krusei, and 1.25 μg/ml for C. guilliermondii. The results indicate that the new antifungal agent L-733,560 demonstrated the best activity with the lowest MICs against C. albicans, T. glabrata, C. tropicalis, and C. kefyr, less activity against C. krusei, C. lusitaniae, and C. parapsilosis, and the least activity against C. guilliermondii. L-733,560 also demonstrated good activity against the various multi-azole. resistant Candida and T. glabrata isolates.

Original languageEnglish (US)
Pages (from-to)2689-2691
Number of pages3
JournalAntimicrobial Agents and Chemotherapy
Volume39
Issue number12
DOIs
StatePublished - Jan 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • Pharmacology
  • Pharmacology (medical)
  • Infectious Diseases

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