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Molecular detection of Trypanosoma evansi na Amazonia Oriental, Brasil
The present study aimed to diagnose the natural infection of captive and free-living procyonids with Trypanosoma evansi in the states of Amapa and Para, Brazil From February 2012 to August 2013, whole blood samples and blood smears were obtained from 45 free-living procyonids and from nine procyonid...
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Published in: | Ciência rural 2016-04, p.663 |
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Main Authors: | , , , , , , , , , , |
Format: | Article |
Language: | Spanish |
Online Access: | Get full text |
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Summary: | The present study aimed to diagnose the natural infection of captive and free-living procyonids with Trypanosoma evansi in the states of Amapa and Para, Brazil From February 2012 to August 2013, whole blood samples and blood smears were obtained from 45 free-living procyonids and from nine procyonids kept in captivity in wild life refuges and zoobotanical parks in the states of Amapa and Para. Whole blood samples were collected and kept at -20°C for the detection of T evansi DNA by PCR using the RoTat 1.2 forward and RoTat 1.2 reverse primers. In addition, the blood smears were processed and examined for the presence of trypomastigote forms of T evansi. T evansi DNA was detected in 18.52% (10/54) of the procyonids, namely, in captive crabeating raccoons and captive and free-living coatis in Para State. No trypomastigote forms were observed in the blood smears. DNA from T. evansi was detected in P. cancrivorus and N. nasua in Para State, being this the first such report in P. cancrivorus. Key words: Trypanosoma evansi, PCR, Procyonidae, Eastern Amazon. O objetivo do presente trabalho foi realizar o diagnostico da infeccao natural por Trypanosoma evansi em procionideos de vida livre e de cativeiro dos estados do Amapa e Para, Brasil. Durante o periodo de fevereiro de 2012 a agosto de 2013, amostras de sangue total e esfregacos sanguineos foram obtidos de 45 procionideos de vida livre e de nove mantidos em cativeiro em mantenedores e Parques Zoobotanicos dos estados do Amapa e Para. As amostras de sangue total foram coletadas e mantidas a -20°C para pesquisa de DNA de T. evansi pela PCR utilizando-se os iniciadores RoTat 1.2 forward e RoTat 1.2 reverse. Os esfregacos sanguineos tambem foram processados e examinados para a pesquisa de formas tripomastigotas do agente. DNA de T evansi foi detectado em 18,52% (10/54) dos procionideos, ocorrendo em maos-peladas de cativeiro e quatis de vida livre e de cativeiro no estado do Para. Nao foram observadas formas tripomastigotas nos esfregacos sanguineos. DNA de T. evansi foi detectado em P. cancrivorus e N. nasua no estado do Para, sendo este o primeiro relato em P. cancrivorus. Palavras-chave: Trypanosoma evansi, PCR, Procyonidae, Amazonia Oriental. |
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ISSN: | 0103-8478 |
DOI: | 10.1590/0103-8478cr20150679 |