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1.
Mem. Inst. Oswaldo Cruz ; 112(10): 719-722, Oct. 2017. graf
Article Dans Anglais | LILACS | ID: biblio-1040562

Résumé

We report the first two cases of Trichosporon mycotoxinivorans infections in Latin America. We also conducted a literature review and a microbiological investigation, including that of clinical and environmental isolates. A 30-year-old man with chronic renal failure had disseminated infection after dialysis and a 15-year-old boy with cystic fibrosis (CF) had pulmonary exacerbations with positive respiratory samples. A review of the relevant literature revealed that deep-seated infections were related to immunosuppression or invasive devices, while most of the CF patients showed a decline in lung function after positive cultures. Phylogenetic analyses revealed three distinct circulating genotypes. MALDI-TOF mass spectrometry analysis showed similar spectral profiles and correctly identified all strains/isolates. Biofilm production was documented in a bloodstream isolate and biofilm-producing cells showed high minimum inhibitory concentrations against antifungals.


Sujets)
Humains , Mâle , Adolescent , Adulte , Trichosporon/génétique , Trichosporonose/diagnostic , Trichosporon/classification , Trichosporon/effets des médicaments et des substances chimiques , Brésil/épidémiologie , Tests de sensibilité microbienne , Biofilms/croissance et développement , Trichosporonose/microbiologie , Trichosporonose/épidémiologie , Génotype , Amérique latine , Antifongiques/pharmacologie
2.
Rev. Soc. Bras. Med. Trop ; 45(3): 402-404, May-June 2012. ilus
Article Dans Anglais | LILACS | ID: biblio-1288064

Résumé

INTRODUCTION: White piedra is a superficial mycosis caused by the genus Trichosporon and characterized by nodules on hair shaft. METHODS: The authors report a family referred to as pediculosis. Mycological culture on Mycosel® plus molecular identification was performed to precisely identify the etiology. RESULTS: A Trichosporon spp. infection was revealed. The molecular procedure identified the agent as Trichosporon inkin. CONCLUSIONS: White piedra and infection caused by T. inkin are rarely reported in Southern Brazil. The molecular tools are essentials on identifying the Trichosporon species.


INTRODUÇÃO: Piedra branca é micose superficial causada por fungos do gênero Trichosporon e caracterizado por nódulos firmemente aderidos à haste do pêlo. MÉTODOS: Os autores relatam casos familiares encaminhados como pediculose. Foram utilizados cultura em ágar Mycosel® e identificação molecular. RESULTADOS: Exame micológico revelou a infecção por Trichosporon spp. A identificação molecular demonstrou se tratar do Trichosporon inkin. CONCLUSÕES: Piedra branca e infecção pelo T. inkin são raramente relatados na região sudeste do Brasil. A identificação molecular é essencial para correta determinação de espécies no gênero Trichosporon.


Sujets)
Adulte , Enfant , Enfant d'âge préscolaire , Femelle , Humains , Mâle , Piedra/diagnostic , Dermatoses du cuir chevelu/diagnostic , Dermatoses du cuir chevelu/microbiologie , Trichosporon/génétique , Piedra/microbiologie , Trichosporon/isolement et purification , Trichosporon/classification
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