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Year 2017 - Volume 37, Number 9
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Transplacental transmission of Neospora caninum in naturally infected small ruminants from northeastern Brazil, 37(9):921-925
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ABSTRACT.- Nunes A.C.B.T., Yamasaki E.M., Kim P.C.P., Melo R.P.M., Ribeiro-Andrade M., Porto W.J.N. & Mota R.A. 2017. Transplacental transmission of Neospora caninum in naturally infected small ruminants from northeastern Brazil. Pesquisa Veterinária Brasileira 37(9):921-925. Laboratório de Doenças Infecto-contagiosas dos Animais Domésticos, Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros s/n, Dois Irmãos, Recife, PE 52171-900, Brazil. E-mail: rinaldo.mota@hotmail.com
Toxoplasma gondii and Neospora caninum are causative agents of abortion in sheep and goats. Thus, the present study aimed to describe the transplacental transmission of these protozoans in small ruminants of northeastern Brazil. Seventeen fetuses (6 goats and 11 sheep) from farms with history of abortion were necropsied and samples were collected from different tissues (brain, liver, lung, kidney and heart). The samples were analyzed by PCR, histopathology (HP) and immunohistochemistry (IHC) to evaluate whether T. gondii and/or N. caninum infection were the cause of abortion. None of the samples was positive for T. gondii according to PCR and IHC results. Some brain, liver, lung, kidney and heart samples of goat fetuses were positive for N. caninum by PCR. In the histopathology, mild mononuclear infiltration and necrosis with calcification were observed in the liver and brain of one goat fetus, respectively, that also was positive for N. caninum by PCR and IHC. The results confirmed vertical transmission of N. caninum in naturally infected goats of northeastern, Brazil. |
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