Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 1 de 1
Filter
Add filters








Year range
1.
Rev. AMRIGS ; 59(3): 204-208, jul.-set. 2015. tab
Article in Portuguese | LILACS | ID: biblio-835415

ABSTRACT

Introdução: Os fungos do gênero Cryptococcus, principalmente as espécies C. neoformans e C. gattii, são patógenos que causam a meningoencefalite, principalmente em indivíduos imunocomprometidos. O fungo é inalado, sendo as excretas de aves o nicho mais evidente do C. neoformans e as árvores do C. gattii. O presente estudo visa pesquisar o fungo Cryptococcus spp. nos arredores de grandes hospitais de Porto Alegre e verificar a susceptibilidade destes isolados ambientais aos antifúngicos. Métodos: Foram coletadas 87 amostras de excretas de pombos no entorno de seis hospitais de Porto Alegre e semeadas. As colônias leveduriformes foram analisadas macro e microscopicamente e submetidas a provas bioquímicas e moleculares. Posteriormente, estes isolados foram submetidos aos testes de susceptibilidade aos antifúngicos Etest® (Biomérieux) e MIC Strip Test® (Leofilchem). Resultados: Os fungos do gênero Cryptococcus foram isolados em seis amostras, sendo que cinco foram identificados, pelas provas convencionais, como o C. neoformans e uma o C. gattii, porém estas espécies não foram confirmadas pelas provas moleculares. No antifungigrama se encontraram entre os isolados de C. neoformans faixas de valores de concentração inibitória mínima (CIM) de 0,25-8 μg/ml para anfotericina B, 0,125->32 μg/ml para cetoconazol, 0,75->256 μg/ml para fluconazol, 0,125->32 μg/ml para voriconazol, e todas apresentaram CIM >32 μg/ml para itraconazol. Conclusões: A presença deste fungo em áreas hospitalares pode configurar um risco biológico, já que nestas áreas circulam muitos indivíduos imunocomprometidos, e a presença de cepas resistentes aos antifúngicos pode levar a uma diferente forma de conduzir o tratamento das patologias provocadas por esta levedura.


Introduction: Fungi of the Cryptococcus genus, mainly the species C. neoformans and C. gattii, are pathogens that cause meningoencephalitis, especially in immunocompromised individuals. The fungus is inhaled, with the excreta of birds being the most obvious niche of C. neoformans and trees of C. gattii. This study aims to fi nd the Cryptococcus spp. fungus on the outskirts of large hospitals in Porto Alegre and check the susceptibility of these environmental isolates to antifungal agents. Methods: We collected 87 samples of pigeon feces in the surroundings of six hospitals in Porto Alegre and cultured them. The yeast colonies were analyzed macroscopically and microscopically and subjected to biochemical and molecular tests. Subsequently these isolates were submitted to susceptibility tests to antifungals Etest® (Biomerieux) and MIC Strip Test® (Leofi lchem). Results: Fungi of the Cryptococcus genus were isolated in 6 samples, of which 5 were identifi ed by conventional tests, such as C. neoformans and C. gattii, but these species were not confi rmed by molecular tests. On antifungal susceptibility tests in C. neoformans isolates showed minimum inhibitory concentration values (MIC) ranging from 0.25 to 8 g/ml for amphotericin B, 0.125-> 32 ug/ml for ketoconazole, 0,75-> 256/ml for fl uconazole, and 0.125->32 ug/ml for voriconazole, and all showed MIC>32 mg/ml for itraconazole. Conclusion: The presence of this fungus in hospital areas may pose a biohazard, as many immunocompromised individuals circulate in these areas, and the presence of antifungal resistant strains can lead to a different way of conducting the treatment of disorders caused by this yeast.


Subject(s)
Humans , Cryptococcosis , Fungicides, Industrial
SELECTION OF CITATIONS
SEARCH DETAIL