title: Evaluation of Etest and macrodilution broth method for antifungal susceptibility testing of Candida sp strains isolated from oral cavities of AIDS patients.
abstract: A comparison of the Etest and the reference broth macrodilution susceptibility test for fluconazole, ketoconazole, itraconazole and amphotericin B was performed with 59 of Candida species isolated from the oral cavities of AIDS patients. The Etest method was performed according to the manufacturer's instructions, and the reference method was performed according to National Committee for Clinical Laboratory Standards document M27-A guidelines. Our data showed that there was a good correlation between the MICs obtained by the Etest and broth dilution methods. When only the MIC results at +/- 2 dilutions for both methods were considered, the agreement rates were 90.4% for itraconazole, ketoconazole and amphotericin B and 84.6% for fluconazole of the C. albicans tested. In contrast, to the reference method, the Etest method classified as susceptible three fluconazole-resistant isolates and one itraconazole-resistant isolate, representing four very major errors. These results indicate that Etest could be considered useful for antifungal sensitivity evaluation of yeasts in clinical laboratories.
authors.affiliation: Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brasil. rosario@iptsp.ufg.br
authors.forename: Maria do Rosário R
authors.initials: Mdo R
authors.lastname: Silva
authors.forename: Márcio R
authors.initials: MR
authors.lastname: Costa
authors.forename: André T B
authors.initials: AT
authors.lastname: Miranda
authors.forename: Orionalda de F L
authors.initials: Ode F
authors.lastname: Fernandes
authors.forename: Carolina R
authors.initials: CR
authors.lastname: Costa
authors.forename: Claudete R de
authors.initials: CR
authors.lastname: Paula
mesh_terms: D000935:Antifungal Agents / Q000494:pharmacology*; D002175:Candida / Q000187:drug effects*; D003470:Culture Media; D015725:Fluconazole / Q000494:pharmacology; D006801:Humans; D017964:Itraconazole / Q000494:pharmacology; D008826:Microbial Sensitivity Tests / Q000379:methods*
chemical_list: D000935:Antifungal Agents; D003470:Culture Media; D017964:Itraconazole; D015725:Fluconazole