PESQUISA VETERINÁRIA BRASILEIRA

Abstract in English:

ABSTRACT.- Corte A.C., Gennari S.M., Labruna M.B., Camargo L.M.A., Itano E.N., Freire R.L., Camargo Z.P. & Ono M.A. 2012. Paracoccidioides brasiliensis infection in dogs from Western Brazilian Amazon. Pesquisa Veterinária Brasileira 32(7):649-652. Departamento de Ciências Patológicas, Universidade Estadual de Londrina, Londrina, PR 86051-980, Brazil. E-mail: marioono@uel.br The objective of the study was to evaluate Paracoccidioides brasiliensis infection in urban dogs from the municipality of Monte Negro, Rondonia, Western Brazilian Amazon. The serum samples (n=126) were analyzed by indirect ELISA and the immunodiffusion test using P. brasiliensis gp43 and exoantigen as antigens, respectively. A positivity of 54.8% was observed only in the ELISA test and no statistical difference was observed in the seroprevalence in relation to age or sex. This is the first paracoccidioidomycosis survey carried out with dogs from the Western Brazilian Amazon. The higher positivity rates of P. brasiliensis infection observed in this study suggest that veterinarians must be alert to detect new cases of natural disease in dogs living in paracoccidioidomycosis endemic areas.

• Paracoccidioides brasiliensis paracoccidioidomycosis paracoccidioidomicose

Abstract in Portuguese:

RESUMO.- Corte A.C., Gennari S.M., Labruna M.B., Camargo L.M.A., Itano E.N., Freire R.L., Camargo Z.P. & Ono M.A. 2012. Paracoccidioides brasiliensis infection in dogs from Western Brazilian Amazon. Pesquisa Veterinária Brasileira 32(7):649-652. Departamento de Ciências Patológicas, Universidade Estadual de Londrina, Londrina, PR 86051-980, Brazil. E-mail: marioono@uel.br O objetivo deste estudo foi avaliar a infecção por Paracoccidioides brasiliensis em cães urbanos do município de Monte Negro, Rondônia, Amazônia Ocidental Brasileira. As amostras de soro (n=126) foram analisadas por meio dos testes de ELISA indireto e imunodifusão utilizando gp43 de P. brasiliensis e exoantígeno como antígenos, respectivamente. Uma positividade de 54,8% foi observada apé isso mesmoenas no teste de ELISA e nenhuma diferença estatística foi observada na soroprevalência em relação ao sexo ou à idade. Este é o primeiro estudo epidemiológico de paracoccidioidomicose realizado com cães da Amazônia Ocidental Brasileira. A alta positividade de infecção por P. brasiliensis observada neste estudo sugere que os veterinários devem estar atentos para detectar a doença natural em cães de áreas endêmicas para paracoccidioidomicose.

Abstract in English:

ABSTRACT.- Lugarini C., Condas L.A.Z., Soresini G.C., Santos R.C.F., Muro M.D., Ono M., Farias M.R. & Montiani-Ferreira F. 2008. Screening of antigenemia and isolation of Cryptococcus neoformans and C. gattii from cloaca and crop of birds in the state of Paraná, Brazil. Pesquisa Veterinária Brasileira 28(7):341-344. Departamento de Medicina Veterinária, Rua dos Funcionários 1540, Juvevê, Curitiba PR 80035-050, Brazil. E-mail: camilelug@gmail.com Cryptococcus neoformans and C. gattii are associated with dry bird excreta but rarely recovered from birds’ digestive tract. The objective of the present study was (1) to verify the existence of C. neoformans and C. gattii in crop and cloaca of wildlife and captivity birds hypothesizing about a possible primary source of this yeast in the excreta, and (2) to determine the fungi’s invasive capability in avian species through latex agglutination. For that purpose, 172 cloacal and 77 crop samples of domestic pigeon, Passerine, and Psittacine birds were collected. None of these samples was positive, suggesting that the yeast is not saprobiotic in the digestive tract of these birds. Only one out of 82 serum samples collected from pigeons and Psittacine birds was positive (title 1:2) showing that Cryptococcus sp. probably has a low invasive capability in birds, and is thus considered only a dry excreta colonizer.

• Ecology birds yeast Cryptococcus neoformans Cryptococcus gattii

Abstract in Portuguese:

ABSTRACT.- Lugarini C., Condas L.A.Z., Soresini G.C., Santos R.C.F., Muro M.D., Ono M., Farias M.R. & Montiani-Ferreira F. 2008. Screening of antigenemia and isolation of Cryptococcus neoformans and C. gattii from cloaca and crop of birds in the state of Paraná, Brazil. Pesquisa Veterinária Brasileira 28(7):341-344. Departamento de Medicina Veterinária, Rua dos Funcionários 1540, Juvevê, Curitiba PR 80035-050, Brazil. E-mail: camilelug@gmail.com Cryptococcus neoformans and C. gattii are associated with dry bird excreta but rarely recovered from birds’ digestive tract. The objective of the present study was (1) to verify the existence of C. neoformans and C. gattii in crop and cloaca of wildlife and captivity birds hypothesizing about a possible primary source of this yeast in the excreta, and (2) to determine the fungi’s invasive capability in avian species through latex agglutination. For that purpose, 172 cloacal and 77 crop samples of domestic pigeon, Passerine, and Psittacine birds were collected. None of these samples was positive, suggesting that the yeast is not saprobiotic in the digestive tract of these birds. Only one out of 82 serum samples collected from pigeons and Psittacine birds was positive (title 1:2) showing that Cryptococcus sp. probably has a low invasive capability in birds, and is thus considered only a dry excreta colonizer.