Previous Article | Next Article ![]()
Journal of Clinical Microbiology, Jan 1997, 139-143, Vol 35, No. 1
A Espinel-Ingroff, M Bartlett, R Bowden, NX Chin, C Cooper Jr, A Fothergill, MR McGinnis, P Menezes, SA Messer, PW Nelson, FC Odds, L Pasarell, J Peter, MA Pfaller, JH Rex, MG Rinaldi, GS Shankland, TJ Walsh and I Weitzman
A multicenter study was conducted to expand the generation and analysis of
data that supports the proposal of a reference method for the antifungal
susceptibility testing of filamentous fungi. Broth microdilution MICs of
amphotericin B and itraconazole were determined in 11 centers against 30
coded duplicate pairs of Aspergillus spp., Fusarium spp., Pseudallescheria
boydii, and Rhizopus arrhizus. The effect of inoculum density
(approximately 10(3) and 10(4) CFU/ml), incubation time (24, 48, and 72 h),
and procedure of MIC determination (conventional and colorimetric [Alamar
Blue] evaluation of growth inhibition) on intra- and interlaboratory
agreement was analyzed. Based on intra- (97 to 100%) and interlaboratory
(94 to 95%) agreement for both drugs, the overall optimal testing
conditions identified were determination of colorimetric MICs after 48 to
72 h of incubation with an inoculum density of approximately 10(4) CFU/ml.
These testing conditions are proposed as guidelines for a reference broth
microdilution method.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Multicenter evaluation of proposed standardized procedure for antifungal susceptibility testing of filamentous fungi
Medical College of Virginia/Virginia Commonwealth University, Richmond 23298-0049, USA.
This article has been cited by other articles:
| Antimicrob. Agents Chemother. | Clin. Microbiol. Rev. |
|---|---|
| Clin. Vaccine Immunol. | ALL ASM JOURNALS |
|---|