Candida albicans and Candida tropicalis in oral candidosis: quantitative analysis, exoenzyme activity, and antifungal drug sensitivity |
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Authors: | da Costa Karen Regina Carim Ferreira Joseane Cristina Komesu Marilena Chinali Candido Regina Celia |
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Institution: | Faculdade de Ciências Farmacêuticas de Ribeir?o Preto, Universidade de S?o Paulo, Av. do Café S/N, 14040-903, Ribeir?o Preto, SP, Brazil. krccosta@fcfrp.usp.br |
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Abstract: | Candida albicans and C. tropicalis obtained from whole saliva of patients presenting signs of oral candidosis were assayed for quantification of colony forming
units, exoenzyme activity (phospholipase and proteinase) and antifungal drug sensitivity (amphotericin B, fluconazole and
itraconazole) by the reference method of the Clinical and Laboratory Standards Institute. The number of colony forming units
per milliliter varied according to the Candida species involved and whether a single or mixed infection was present. Proteinase activity was observed in both C. albicans and C. tropicalis, but phospholipase activity was noted only in C. albicans. In vitro resistance to antifungals was verified in both species, but C. tropicalis appears to be more resistant to the tested antifungals than C. albicans. |
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Keywords: | Antifungal drug sensitivity Candida albicans Candida tropicalis Exoenzyme activity Oral candidosis Quantitative analysis |
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