Morphological and biochemical characterization of the aetiological agents of white piedra
Morphological and biochemical characterization of the aetiological agents of white piedra
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DOI：
10.1590/s0074-02762008000800008
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发表时间：
2008-12-01
期刊：
影响因子：
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通讯作者：
Nishikawa, Marilia Martins
中科院分区：
文献类型：
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作者：
Magalhães, Alba Regina;Mondino, Silvia Susana Bona de;Nishikawa, Marilia Martins
丝孢酵母属由许多种组成，其中卵形丝孢酵母和墨水丝孢酵母是白色彼德拉的病原体。它们会导致生殖器毛发或头皮上的结节。目前，巴西的实验室常规通常不包括丝孢酵母属的物种的鉴定，尽管在形态和生理上不同，但存在许多相似之处，使得鉴定困难。本研究的目的是从临床标本中鉴定白色琵鹭物种水平的病原体。因此，我们研究了其宏观和微观形态，并进行了生理试验。丝孢酵母属物种从10份临床标本中分离到T. ovoides为优势种，在7个样品中发现，而T.仅在两个样本中发现了墨水。1株分离株在种属水平上无法鉴别。T.首次在10岁以下儿童的毛干中鉴定出inkin为白色piedra剂。
The Trichosporon genus is constituted by many species, of which Trichosporon ovoides and Trichosporon inkin 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.