Anti-Neospora caninum IgG in fetal bovine serum
DOI:
https://doi.org/10.5433/1679-0359.2020v41n5p1809Keywords:
Serum, Abortion, Transplacental transmission.Abstract
Neospora caninum is an obligate intracellular protozoan, recognized as an important cause of abortion in infection cattle worldwide, and is responsible for major economic losses in beef and dairy herds. There are scarce data on the presence of antibodies in fetal serum samples from beef cattle. The pathogen is straggling mainly by vertical transmission in ruminants. This study aimed to determine the frequency of anti-N. caninum antibodies in fetal bovine serum. Overall, 751 fetal serum samples from slaughterhouses in Uruguaiana and Santo Ângelo (Rio Grande do Sul state) were used. Serologic diagnosis was made using indirect immunofluorescence assay (IFA). Slides were prepared by culturing infected Vero cells using tachyzoites of the N. caninum NC-1 strain and a serum dilution of 1:25. Of the 751 samples analyzed, 11.7% (88/751) were positive in the IFA assay. The results indicate an occurrence of neosporosis in the studied region, as well as the possibility of transplacental transmission of the protozoon, characterizing an important mechanism of propagation for the disease.Downloads
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References
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Buxton, D., McAllister, M. M., & Dubey, J. P. (2002). The comparative pathogenesis of neosporosis. Trends in Parasitology, 18(12), 546-552. doi: 10.1016/S1471-4922(02)02414-5
Cadore, G. C., Vogel, F. S. F., Sangioni, L. A., Pena, H. F. J., & Gennari, S. M. (2010). IgM e IgG como marcadores da infecção transplacentária por Neospora caninum em fetos bovinos. Pesquisa Veterinária Brasileira, 30(7), 551-553. doi: 10.1590/S0100-736X2010000700007
Corbellini, L. G., Driemeier, D., Cruz, C. F., Gondim, L. F., & Wald, V. (2002). Neosporosis as a cause of abortion in dairy cattle in Rio Grande do Sul, southern Brazil. Veterinary Parasitology, 103(3), 195-202. doi: 10.1016/s0304-4017(01)00600-08
Costa, G. H. N., Cabral, D. D., Varandas, N. P., Sobral, E. A., Borges, F. A., & Castagnolli, K. L. (2001). Frequência de anticorpos anti-Neospora caninum e anti-Toxoplasma gondii em soros de bovinos pertencentes aos estados de São Paulo e Minas Gerais. Semina: Ciências Agrárias, 22(1), 61-66. doi: 10.5433/1679-0359.2001v22n1p61
Dubey, J. P., & Lindsay, D. S. (1996). A review of Neospora caninum and neosporosis. Veterinary Parasitology, 67(1), 1-59. doi: 10.1016/S0304-4017(96)01035-7
Guedes, M. H. P., Guimarães, A. M., Rocha, C. M. B. M., & Hirsch, C. (2008). Frequência de anticorpos anti-Neospora caninum em vacas e fetos provenientes de municípios do sul de Minas Gerais. Revista Brasileira de Parasitologia Veterináira, 17(4), 189-194. doi: 10.1590/S1984-29612008000400004
Marques, F. A. C., Headley, A. S., Figueredo-Pereira, V., Taroda, A., Barros, L. D., Cunha, I. A. L.,... Garcia, J. L. (2011). Neospora caninum: evaluation of vertical transmission in slaughtered beef cows (Bos indicus). Parasitology Research, 108(4), 1015-1019. doi: 10.1007/s00436-010-2146-x
McAllister, M. M., Dubey, J. P., Lindsay, D. S., Jolley, W. R., Wills, R. A., & McGuire, A. M. (1998). Dogs are definitive hosts of Neospora caninum. International Journal of Parasitology, 28(9), 1473-1478. doi: 10.1016/S0020-7519(98)00138-6
Moore, D. P., Campero, C. M., Odeón, A. C., Posso, M. A., Cano, D., Leunda, M. R.,... Späth, E. (2002). Seroepidemiology of beef and dairy herds and fetal study of Neospora caninum in Argentina. Veterinary Parasitology, 107(4), 303-316. doi: 10.1016 / S0304-4017 (02) 00129-2
Sondgen, P., Peters, M., Bärwald, A., Wurm, R., Holling, F., Conraths, F. J., & Schares, G. (2001). Bovine neosporosis: immunoblot improves foetal serology. Veterinary Parasitology, 102(4), 279-290. doi: 10.1016/S0304-4017(01)00543-X
Wouda, W., Dubey, J. P., & Jenkins, M. C. (1997). Serological diagnosis of bovine fetal neosporosis. Journal of Parasitology, 83(3), 545-547. doi: 10.2307/3284431
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Published
2020-06-17
How to Cite
Reginato, C. Z., Fernandes, F. D., Braünig, P., Sangioni, L. A., & Vogel, F. S. F. (2020). Anti-Neospora caninum IgG in fetal bovine serum. Semina: Ciências Agrárias, 41(5), 1809–1812. https://doi.org/10.5433/1679-0359.2020v41n5p1809
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