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1.
Rev Bras Parasitol Vet ; 23(2): 206-15, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25054500

RESUMO

Tick-borne infections can result in serious health problems for wild ruminants, and some of these infectious agents can be considered zoonosis. The aim of the present study was the post-mortem detection of hemoparasites in free-living Mazama gouazoubira from Minas Gerais state, Brazil. The deer samples consisted of free-living M. gouazoubira (n = 9) individuals that died after capture. Necropsy examinations of the carcasses were performed to search for macroscopic alterations. Organ samples were collected for subsequent imprint slides, and nested PCR assays were performed to detect hemoparasite species. Imprint slide assays from four deer showed erythrocytes infected with Piroplasmida small trophozoites, and A. marginale corpuscles were observed in erythrocytes from two animals. A. marginale and trophozoite co-infections occurred in two deer. A nested PCR analysis of the organs showed that six of the nine samples were positive for Theileria sp., five were positive for A. phagocytophilum and three were positive for A. marginale, with co-infection occurring in four deer. The results of the present study demonstrate that post-mortem diagnostics using imprint slides and molecular assays are an effective method for detecting hemoparasites in organs.


Assuntos
Cervos/sangue , Cervos/parasitologia , Doenças Parasitárias em Animais/sangue , Animais , Autopsia , Brasil , Feminino , Masculino , Doenças Parasitárias em Animais/diagnóstico
2.
Rev. bras. parasitol. vet ; 23(2): 206-215, 06/2014. tab, graf
Artigo em Inglês | LILACS | ID: lil-714783

RESUMO

Tick-borne infections can result in serious health problems for wild ruminants, and some of these infectious agents can be considered zoonosis. The aim of the present study was the post-mortem detection of hemoparasites in free-living Mazama gouazoubira from Minas Gerais state, Brazil. The deer samples consisted of free-living M. gouazoubira (n = 9) individuals that died after capture. Necropsy examinations of the carcasses were performed to search for macroscopic alterations. Organ samples were collected for subsequent imprint slides, and nested PCR assays were performed to detect hemoparasite species. Imprint slide assays from four deer showed erythrocytes infected with Piroplasmida small trophozoites, and A. marginale corpuscles were observed in erythrocytes from two animals. A. marginale and trophozoite co-infections occurred in two deer. A nested PCR analysis of the organs showed that six of the nine samples were positive for Theileria sp., five were positive for A. phagocytophilum and three were positive for A. marginale, with co-infection occurring in four deer. The results of the present study demonstrate that post-mortem diagnostics using imprint slides and molecular assays are an effective method for detecting hemoparasites in organs.


Patógenos transmitidos por carrapatos podem resultar em sérios problemas de saúde para os ruminantes selvagens, e alguns podem ser zoonoses. O objetivo do presente estudo foi a detecção post mortem de hemoparasitos, em Mazama gouazoubira de vida livre, oriundos de Minas Gerais, através da análise de lâminas de impressão e nested PCR. Foram amostrados nove M. gouazoubira de vida livre, que morreram após a captura. Exames de necropsia foram realizados, e as carcaças foram examinadas para detectar alterações macroscópicas. Amostras dos órgãos foram coletadas para a realização de imprint em lâminas e para nested PCR à procura de hemoparasitos. A análise das lâminas mostrou pequenos trofozoítos de Piriplasmida nos eritrócitos de quatro dos oito animais examinados, e corpúsculos de Anaplasma marginale foram observados nos eritrócitos de dois dos cervídeos. A coinfecção com A. marginale e trofozoítos de piroplasmas ocorreu em dois animais. As análises de nPCR dos órgãos mostraram que seis dos nove animais estavam positivos para Theileria sp., cinco para A. phagocytophilum e três para A. marginale, sendo que a coinfecção ocorreu em quatro cervídeos. Os resultados do presente estudo demonstram que os diagnósticos post-mortem, pelas imprints em lâminas e ensaios moleculares, são métodos eficazes de detecção de hemoparasitos nos principais órgãos parasitados.


Assuntos
Animais , Feminino , Masculino , Cervos/sangue , Cervos/parasitologia , Doenças Parasitárias em Animais/sangue , Autopsia , Brasil , Doenças Parasitárias em Animais/diagnóstico
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