884 resultados para SPIDER DRAGLINE SILK
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Pós-graduação em Química - IQ
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Pós-graduação em Agronomia (Energia na Agricultura) - FCA
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Odontologia - FOAR
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Química - IQ
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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The dimorphic pathogenic fungus, Paracoccidioides brasiliensis (Pb), is the etiological agent of paracoccidioidomycosis (PCM), the most important systemic mycosis in Latin America. While the yeast phase can be isolated from patients affected by paracoccidioidomycosis, dogs and naturally infected armadillos; several elements related to the ecology of the saprophytic phase of the pathogen, which is responsible for the production of infective propagules, are poorly understood, hampering the adoption of preventive measures. The demonstration of the high incidence of Pb infection in the 9- banded armadillo, Dasypus novemcinctus, has opened new perspectives for the identification of the pathogen’s habitat. At the opening of the armadillos’ burrows, spider webs are commonly found. The objective of this study was to evaluate the presence of Pb in spider webs samples related to the habitat of armadillos. Spider web samples were collected at Lageado Farm, Botucatu/SP and prepared for microscopic, molecular and mycological analyses. Microscopic analysis showed that different fungi were closely attached to spider web samples. Nested-PCR reaction showed positive amplification for Pb in 4 samples, with identity confirmed by amplicon sequencing. Fungal colonies also included members of Aspergillus, Blastobotrys, Penicillium, Candida, and Sporothrix genera, which are related to opportunistic disease and primary infections of great medical importance. In vitro adhesion tests of mycelia and yeast form of Pb to the spider webs were also performed, in order to analyze the possible physical attraction between fungal cells and the spider web protein network. The results showed a clear adherence of fungal particles to spider webs. In the current literature, there are no studies reporting adhesive properties of microorganisms to spider webs... (Complete abstract click electronic access below)
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Pós-graduação em Artes - IA
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)