| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Previous Article | Next Article ![]()
Journal of Clinical Microbiology, July 2007, p. 2180-2182, Vol. 45, No. 7
0095-1137/07/$08.00+0 doi:10.1128/JCM.00399-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

VCU Medical Center, Richmond, Virginia,1 University of Texas Health Science Center, San Antonio, Texas,2 Case Western Reserve University, Cleveland, Ohio,3 Wayne State University, Detroit, Michigan,4 University of Texas-Houston Medical School, Houston, Texas,5 University of Iowa College of Medicine, Iowa City, Iowa,6 Duke University, Durham, North Carolina,7 National Cancer Institute, Bethesda, Maryland8
Received 21 February 2007/ Returned for modification 2 April 2007/ Accepted 24 April 2007
The CLSI (formerly NCCLS) M38-A document for antifungal susceptibility testing of filamentous fungi does not describe guidelines for echinocandins. A multicenter study (eight centers) evaluated inter- and intralaboratory reproducibilities of two reading times (24 and 48 h or 48 and 72 h) and two end points (MICs and minimum effective concentrations [MECs]) for evaluating anidulafungin against molds. Anidulafungin MICs (
50% inhibition) and MECs (morphological hyphal changes) were determined for seven Aspergillus isolates (four species) and one isolate each of Fusarium moniliforme, Fusarium solani, and Paecilomyces variotii and for two Scedosporium apiospermum isolates. The inter- and intralaboratory reproducibilities of 10 replicate tests performed in each laboratory on 10 different days for each isolate was 100% at 24 h (MECs,
0.015 µg/ml) for six Aspergillus and P. variotii isolates. The reproducibility was 94 to 96.7% at 72 h (MECs, 1 to 8 µg/ml) for S. apiospermum and 96.7 to 97.5% at 48 h (MICs,
32 µg/ml) for both Fusarium isolates. Introduction of these identified optimum testing conditions for anidulafungin into future versions of the M38 document is warranted.
Published ahead of print on 2 May 2007.
This article has been cited by other articles:
| Antimicrob. Agents Chemother. | Clin. Microbiol. Rev. |
|---|---|
| Clin. Vaccine Immunol. | ALL ASM JOURNALS |
|---|