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Indian Journal of Medical Microbiology
Medknow Publications on behalf of Indian Association of Medical Microbiology
ISSN: 0255-0857 EISSN: 0255-0857
Vol. 24, No. 3, 2006, pp. 171-176
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Bioline Code: mb06053
Full paper language: English
Document type: Research Article
Document available free of charge
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Indian Journal of Medical Microbiology, Vol. 24, No. 3, 2006, pp. 171-176
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Special Article- Antifungal susceptibility testing method for resource constrained laboratories
Khan S, Singhal S, Mathur T, Upadhyay DJ, Rattan A
Abstract
Purpose: In resource-constrained laboratories of developing countries determination of antifungal susceptibility testing by NCCLS/CLSI method is not always feasible. We describe herein a simple yet comparable method for antifungal susceptibility testing.
Methods: Reference MICs of 72 fungal isolates including two quality control strains were determined by NCCLS/CLSI methods against fluconazole, itraconazole, voriconazole, amphotericin B and cancidas. Dermatophytes were also tested against terbinafine. Subsequently, on selection of optimum conditions, MIC was determined for all the fungal isolates by semisolid antifungal agar susceptibility method in Brain heart infusion broth supplemented with 0.5% agar (BHIA) without oil overlay and results were compared with those obtained by reference NCCLS/CLSI methods.
Results: Comparable results were obtained by NCCLS/CLSI and semisolid agar susceptibility (SAAS) methods against quality control strains. MICs for 72 isolates did not differ by more than one dilution for all drugs by SAAS.
Conclusions: SAAS using BHIA without oil overlay provides a simple and reproducible method for obtaining MICs against yeast, filamentous fungi and dermatophytes in resource-constrained laboratories.
Keywords
Antifungal susceptibility testing, minimum inhibitory concentration, NCCLS/CLSI, semisolid agar
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© Copyright 2006 Indian Journal of Medical Microbiology. Alternative site location: http://www.ijmm.org
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