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Trichosporon mucoides
Guého & M.Th. Smith (Guého et al. 1992b)
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Colonies on Sabouraud dextrose agar at 25°C are cream colored, glistening, strongly elevated and become cerebriform in the center but maintain smooth margins. The agar often cracks adjacent to the colony. Colony size is 13-17 mm after 7 days incubation.
On cornmeal following 72 hours incubation at 25°C, it produces true hyphae that disarticulate into rectangular arthroconidia. Appressoria are not formed [928, 1270].
This isolate is urease positive, grows on media containing cycloheximide and at 37°C, but fails to grow at 42°C. The type strain was isolated from the CSF of a patient with meningitis. It has been involved in a cluster of cases in children associated with a faulty bronchoscope[2112], recovered from a heart and kidney transplant recipient[1635], and in infection in premature newborns[854]. Other unpublished isolations are from pubic white piedra, sputum, skin lesions, and blood. This species is the most frequent associated with disseminated disease[925]. The species also biotransforms biphenyl with the formation of novel ring cleavage products[2103].
| AMB |
ITRA |
FLU |
5FC |
VORI |
KETO |
CAS |
| 0.06 µg/ml=1 |
<0.0015 µg/ml=1 |
0.25 µg/ml=1 |
4.0 µg/ml=1 |
0.03 µg/ml=1 |
0.06 µg/ml=1 |
8.0 µg/ml=1 |
| 0.25 µg/ml=4 |
0.03 µg/ml=1 |
0.5 µg/ml=1 |
>64 µg/ml=1 |
0.25 µg/ml=1 |
0.25 µg/ml=1 |
16 µg/ml=1 |
| 0.5 µg/ml=1 |
0.125 µg/ml=2 |
1.0 µg/ml=1 |
|
0.5 µg/ml=1 |
|
32 µg/ml=1 |
| 1.0 µg/ml=1 |
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2.0 µg/ml=2 |
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| 2.0 µg/ml=1 |
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8.0 µg/ml=1 |
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| Drug/N |
AMB/8 |
ITRA/4 |
FLU/6 |
5FC/2 |
VORI/3 |
KETO/2 |
CAS/3 |
| MIC Range |
0.06-2.0 |
<0.015-0.125 |
0.25-8.0 |
4.0->64 |
0.03-0.5 |
0.06-0.25 |
8.0-32 |
* Fungus Testing Laboratory unpublished data (CLSI M27-A2)
PubMed
GenBank
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References
854. Gokahmetoglu, S., A. Nedret Koc, T. Gunes, and N. Cetin. 2002. Case reports. Trichosporon mucoides infection in three premature newborns. Mycoses. 45:123-5.
925. Gueho, E., L. Improvisi, G. S. de Hoog, and B. Dupont. 1994. Trichosporon on humans: a practical account. Mycoses. 37:3-10.
928. Gueho, E., M. T. Smith, G. S. de Hoog, G. Billon-Grand, R. Christen, and W. H. Batenburg-van der Vegte. 1992. Contributions to a revision of the genus Trichosporon. Antonie Van Leeuwenhoek. 61:289-316.
1270. Kurtzman, C. P., and J. W. Fell (ed.). 2000. The Yeasts. A Taxonomic Study. Elsevier Scientific B.V., Amsterdam, The Netherlands.
1635. Nettles, R. E., L. S. Nichols, K. Bell-McGuinn, M. R. Pipeling, P. J. Scheel, Jr., and W. G. Merz. 2003. Successful treatment of Trichosporon mucoides infection with fluconazole in a heart and kidney transplant recipient. Clin Infect Dis. 36:E63-6. Epub 2003 Jan 30.
2103. Sietmann, R., E. Hammer, M. Specht, C. E. Cerniglia, and F. Schauer. 2001. Novel ring cleavage products in the biotransformation of biphenyl by the yeast Trichosporon mucoides. Appl Environ Microbiol. 67:4158-65.
2112. Singh, N., O. Belen, M. M. Leger, and J. M. Campos. 2003. Cluster of Trichosporon mucoides in children associated with a faulty bronchoscope. Pediatr Infect Dis J. 22:609-12.
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