Cryptococcus neoformans var. neoformans isolado do solo Cryptococcus neoformans var. neoformans isolated from soil

Na tentativa de identificar a possível fonte de infecção, inquiriu-se, na história epidemiológica de 42 pacientes portadores de criptococose, o contato com pombos. Informações compatíveis com nicho ecológico do Cryptococcus neoformans foram positivas em 16. Foram colhidas 59 amostras de solo contendo fezes de pombos, penas e material orgânico. O C. neoformans foi detectado em 4. Uma das amostras era originada da capital e três do interior do estado. O sorotipo A do C. neoformans isolado de um liquor coincidiu com o sorotipo da amostra isolada do centro de Porto Alegre, local apontado pelo paciente como possível fonte de infecção, caracterizando caso de Cryptococcus neoformans var. neoformans.<br>We inquiry, in the epidemiologic history of 42 patients with cryptococcosis, the contact with pigeon, trying to find the possible source of infection. Of these patients, the information compatible with ecologic niche of Cryptococcus neoformans was positive in 16. Fifty nine samples were recovered from soil, associated with pigeon habitat. We found C. neoformans in four occasions, one in the capital and three in the interior of state. C. neoformans, serotype A, recovered from a central spine fluid coincides with the serotype of the fungus recovered dowtown Porto Alegre, in a place suggested by the patient as possible source of infection, characterizing of a case of Cryptococcus neoformans. var. neoformans

Guidelines In Cryptococcosis - 2008 [consenso Em Criptococose - 2008]

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Environmental straits of Cryptococcus neoformans variety grubii in the city of Santos, SP, Brazil Amostras ambientais de Cryptococcus neoformans var. grubii na cidade de Santos, SP, Brasil

This study involved a total of 116 samples, 79 taken from pigeon droppings and 37 of atmospheric air taken close to accumulations of excrement. Cryptococcus neoformans var. grubii was isolated from 11 (13.9%) of these samples. Other species of Cryptococcus were also isolated from these samples, such as C. albidus (12.6%) and C. laurentii (8.9%). C. neoformans was not isolated from the air samples, though C. albidus (5.4%) was. All the strains of C. neoformans were found to belong to the A serotype (C. neoformans var. grubii). In regard to the studies with the antifungal agents 5-fluorocytosine, fluconazole, itraconazole, amphotericin B and voriconazole, by means of the microdilution method (EUCAST), we point out that one sample demonstrated resistance to fluconazole, this being especially significant because this is an environmental strain.<br>Analisaram-se 116 amostras, sendo 79 de fezes de pombos e 37 de ar atmosférico de regiões com acúmulo de fezes. Isolou-se Cryptococcus neoformans var. neoformans de 11 (13.9%) destas amostras. Outras espécies de Cryptococcus também foram isoladas destas amostras tais como C. laurentii (8.9%) e C. albidus (12.6 %), o qual também foi isolado de amostras do ar (5.4 %). Todas as amostras de C. neoformans foram sorotipo A (C. neoformans var. grubii). Em relação à avaliação do perfil de sensibilidade às drogas antifúngicas (5-fluorocitosina, fluconazol, itraconazol, anfotericina B e voriconazol) pelo método da microdiluição (EUCAST, 2002), destacou-se a presença de uma amostra com valor de concentração inibitória mínima (CIM) elevado para fluconazol, sendo de grande significância, uma vez tratar-se de isolado ambiental

Cryptococcosis: a review of the brazilian experience for the disease Criptococose: revisão sobre a experiência brasileira sobre a doença

Cryptococcosis is a systemic mycosis caused by Cryptococcus neoformans. The disease occurs in patients with cellular immunodeficiency. The incidence of cryptococcosis arises with aids, and mycosis is one of the opportunistic infections that defines AIDS. After the HAART era the occurrence of cryptococcosis decreased all over the world, but it still continues to be a prevalent disease in Brazil. Thus, we consider this paper to be very important as a result of our reviewing of Brazilian literature regarding some relevant aspects of that disease.<br>Criptococose é micose sistêmica causada por Cryptococcus neoformans. A doença ocorre em pacientes com deficiência da imunidade celular. Com o aparecimento da doença AIDS, a incidência de criptococose aumentou, e a micose é uma das infecções oportunistas que definem um caso de AIDS. Após a era HAART, criptococose parece estar diminuindo no mundo todo, mas continua sendo uma doença prevalente no Brasil. Este artigo visa a análise da contribuição dos autores brasileiros sobre vários aspectos da doença

Molecular characterization of environmental Cryptococcus neoformans isolated in Vitoria, ES, Brazil Caracterização molecular de cepas ambientais de Cryptococcus neoformans isoladas em Vitória, ES, Brasil

Cryptococcus neoformans is the major cause of fungal meningitis, a potentially lethal mycosis. Bird excreta can be considered a significant environmental reservoir of this species in urban areas, thirty-three samples of pigeon excreta were collected within the city of Vitoria, Brazil. Cryptococcus neoformans was isolated and identified using standard biochemical assays in ten samples. PCR amplification with primer M13 and orotidine monophosphate pyrophosphorylase (URA5) gene-restriction fragment length polymorphism (RFLP) analysis discerned serotypes and genotypes within this species. All isolates were serotype A (C. neoformans var. grubii) and genotype VNI. The two alternative alleles a and &#945; at the mating type locus were determined by PCR amplification and mating assays performed on V8 medium. All isolates were MAT &#945; mating type but only 50% were able to mate in vitro with the opposite mating type MAT a tester strains (JEC20, KN99a and Bt63). This study adds information on the ecology and molecular characterization of C. neoformans in the Southeast region of Brazil.<br>O "complexo Cryptococcus neoformans" é constituído por C. neoformans var. neoformans, C. neoformans var. grubii, e C. gattii. Trinta por cento de amostras de excrementos de pombos coletados dentro da cidade de Vitória, Brasil, foram positivas para Cryptococcus neoformans, espécie identificada por testes bioquímicos convencionais. Amplificação por PCR com primer M13 e análise por orotidine monophosphate pyrophosphorylase (URA5) gene-"restriction fragment length polymorphism" (RFLP) distinguiram sorotipos e genotipos dentro desta espécie. Todos os isolados ambientais foram sorotipo A (C. neoformans var. grubii) e genotipo VNI. Os dois alelos alternativos a e &#945; do locus "mating type" foram determinados por PCR e por testes de "mating" em meio V8. Todos os isolados foram "mating type" tipo MAT &#945; mas somente 50% foram capazes de conjugar in vitro com cepas MAT a, de "mating type" oposto (JEC20, KN99a e Bt63). Este estudo adiciona informações sobre a ecologia e caracterização molecular de cepas ambientais de C. neoformans, isoladas na região sudeste do Brasil