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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 103, No. 8, 2008, pp. 786-790
Bioline Code: oc08142
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 103, No. 8, 2008, pp. 786-790

 en Morphological and Biochemical Characterization of the Aetiological Agents of White Piedra
Magalhães, Alba Regina; de Mondino, Silvia Susana Bona; da Silva, Manuela & Nishikawa, Marilia Martins


The Trichosporon check for this species in other resources genus is constituted by many species, of which Trichosporon ovoides check for this species in other resources and Trichosporon inkin check for this species in other resources are the causative agents of white piedra. They can cause nodules in genital hair or on the scalp. At present, Brazilian laboratory routines generally do not include the identification of the species of Trichosporon genus, which, although morphologically and physiologically distinct, present many similarities, making the identification difficult. The aim of this study was to identify the aetiological agents at the species level of white piedra from clinical specimens. Therefore, both the macro and micro morphology were studied, and physiological tests were performed. Trichosporon spp. was isolated from 10 clinical samples; T. ovoides was predominant, as it was found in seven samples, while T. inkin was identified just in two samples. One isolate could not be identified at the species level. T. inkin was identified for the first time as a white piedra agent in the hair shaft on child under the age of 10.

Trichosporon - white piedra - mycosis - phenotypic identification

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