Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil
Main Author: | |
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Publication Date: | 2009 |
Other Authors: | , , , , |
Format: | Article |
Language: | por |
Source: | Brazilian Journal of Veterinary Research and Animal Science |
Download full: | https://www.revistas.usp.br/bjvras/article/view/26789 |
Summary: | Neospora caninum has been described as an important cause of abortion in bovine worldwide. The objective of the present study was to characterize patterns of antibody dynamics during gestation in dairy cows naturally infected with N. caninum. Twelve N. caninum naturally infected cows were selected from four dairy herds from Brazil and blood samples were monthly collected during pregnancy. Serum were tested for antibodies against N. caninum by Indirect Fluorescent Antibody Test (IFAT). During this period, all cows remained clinically normal and gave birth to healthy calves. The cows remained seropositives during the study and N. caninum IFAT titers ranged from 100 to 12,800; only animal 234 presented one negative result in the first month of pregnancy. Significant differences of N. caninum IFAT titers were found between months from 1 to 9 of pregnancy by the Friedman Test (P<0.001). The statistical analysis showed an increase of N. caninum antibody titers from second and third trimester of pregnancy in relation to first trimester. High titers were observed in few cows after month fifth of pregnancy. This study showed a variation of specific antibody levels in seropositive cows during different gestational periods. The highest values were observed during the second and third trimester. The antibody increase after the fifth month of gestation was not associated to abortion. |
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Brazilian Journal of Veterinary Research and Animal Science |
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Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in BrazilDinâmica de anticorpos durante a gestação em vacas naturalmente infectadas com Neospora caninum de quatro rebanhos leiteiros no BrasilNeospora caninumAntibody dynamicsAntibody titerPregnancyBovineNeospora caninumDinâmica de anticorposTítulo anticorposGestaçãoBovinosNeospora caninum has been described as an important cause of abortion in bovine worldwide. The objective of the present study was to characterize patterns of antibody dynamics during gestation in dairy cows naturally infected with N. caninum. Twelve N. caninum naturally infected cows were selected from four dairy herds from Brazil and blood samples were monthly collected during pregnancy. Serum were tested for antibodies against N. caninum by Indirect Fluorescent Antibody Test (IFAT). During this period, all cows remained clinically normal and gave birth to healthy calves. The cows remained seropositives during the study and N. caninum IFAT titers ranged from 100 to 12,800; only animal 234 presented one negative result in the first month of pregnancy. Significant differences of N. caninum IFAT titers were found between months from 1 to 9 of pregnancy by the Friedman Test (P<0.001). The statistical analysis showed an increase of N. caninum antibody titers from second and third trimester of pregnancy in relation to first trimester. High titers were observed in few cows after month fifth of pregnancy. This study showed a variation of specific antibody levels in seropositive cows during different gestational periods. The highest values were observed during the second and third trimester. The antibody increase after the fifth month of gestation was not associated to abortion.Neospora caninum é descrito como uma importante causa de abortamento em bovinos por todo o mundo. O objetivo do presente estudo foi caracterizar o padrão da dinâmica de anticorpos durante a gestação em vacas leiteiras infectadas naturalmente por N. caninum. Doze vacas gestantes infectadas naturalmente com N. caninum foram selecionadas de quatro rebanhos leiteiros do Brasil e amostras de sangue foram mensalmente colhidas da concepção até o parto das vacas. Soros foram testados para anticorpos contra N. caninum pela reação de imunofluorescência indireta (RIFI). Durante a gestação, todas as vacas permaneceram clinicamente normais e geraram bezerros saudáveis. As vacas permaneceram soropositivas durante o estudo e títulos de anticorpos anti-N. caninum variaram de 100 a 12.800; somente o animal 234 apresentou um resultado negativo no primeiro mês de gestação. Diferenças significativas dos títulos da RIFI para N. caninum foram encontradas entre os meses de 1 a 9 de gestação pelo Teste de Friedman (P<0,001). As análises estatísticas mostraram um aumento dos títulos de anticorpos anti-N. caninum no segundo e terceiro trimestre de gestação em relação ao primeiro trimestre. Altos títulos de anticorpos foram observados em algumas vacas após o mês cinco de gestação. Este estudo mostrou variação dos níveis de anticorpos em vacas soropositivas durante diferentes períodos gestacionais. Altos títulos foram observados durante o segundo e terceiro trimestre e o aumento dos títulos de anticorpos após o quinto mês de gestação não foi associado a abortamentos.Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia2009-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/bjvras/article/view/2678910.11606/issn.1678-4456.bjvras.2009.26789Brazilian Journal of Veterinary Research and Animal Science; Vol. 46 Núm. 5 (2009); 395-399 Brazilian Journal of Veterinary Research and Animal Science; Vol. 46 No. 5 (2009); 395-399 Brazilian Journal of Veterinary Research and Animal Science; v. 46 n. 5 (2009); 395-399 Brazilian Journal of Veterinary Research and Animal Science; V. 46 N. 5 (2009); 395-399 1678-44561413-9596reponame:Brazilian Journal of Veterinary Research and Animal Scienceinstname:Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)instacron:USPporhttps://www.revistas.usp.br/bjvras/article/view/26789/28572Cardoso, José Márcio SbruzziNishi, Sandra MayumiFunada, Mikaela RenataAmaku, MarcosGuimarãres Júnior, José da SilvaGennari, Solange Mariainfo:eu-repo/semantics/openAccess2020-06-23T04:11:23Zoai:revistas.usp.br:article/26789Revistahttps://www.revistas.usp.br/bjvrasPUBhttps://www.revistas.usp.br/bjvras/oaibjvras@usp.br1413-95961413-9596opendoar:https://www.revistas.usp.br/bjvras/index2023-01-12T16:43:04.019802Brazilian Journal of Veterinary Research and Animal Science - Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)false |
dc.title.none.fl_str_mv |
Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil Dinâmica de anticorpos durante a gestação em vacas naturalmente infectadas com Neospora caninum de quatro rebanhos leiteiros no Brasil |
title |
Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil |
spellingShingle |
Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil Cardoso, José Márcio Sbruzzi Neospora caninum Antibody dynamics Antibody titer Pregnancy Bovine Neospora caninum Dinâmica de anticorpos Título anticorpos Gestação Bovinos |
title_short |
Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil |
title_full |
Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil |
title_fullStr |
Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil |
title_full_unstemmed |
Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil |
title_sort |
Antibody dynamics during gestation in cows naturally infected with Neospora caninum from four dairy herds in Brazil |
author |
Cardoso, José Márcio Sbruzzi |
author_facet |
Cardoso, José Márcio Sbruzzi Nishi, Sandra Mayumi Funada, Mikaela Renata Amaku, Marcos Guimarãres Júnior, José da Silva Gennari, Solange Maria |
author_role |
author |
author2 |
Nishi, Sandra Mayumi Funada, Mikaela Renata Amaku, Marcos Guimarãres Júnior, José da Silva Gennari, Solange Maria |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cardoso, José Márcio Sbruzzi Nishi, Sandra Mayumi Funada, Mikaela Renata Amaku, Marcos Guimarãres Júnior, José da Silva Gennari, Solange Maria |
dc.subject.por.fl_str_mv |
Neospora caninum Antibody dynamics Antibody titer Pregnancy Bovine Neospora caninum Dinâmica de anticorpos Título anticorpos Gestação Bovinos |
topic |
Neospora caninum Antibody dynamics Antibody titer Pregnancy Bovine Neospora caninum Dinâmica de anticorpos Título anticorpos Gestação Bovinos |
description |
Neospora caninum has been described as an important cause of abortion in bovine worldwide. The objective of the present study was to characterize patterns of antibody dynamics during gestation in dairy cows naturally infected with N. caninum. Twelve N. caninum naturally infected cows were selected from four dairy herds from Brazil and blood samples were monthly collected during pregnancy. Serum were tested for antibodies against N. caninum by Indirect Fluorescent Antibody Test (IFAT). During this period, all cows remained clinically normal and gave birth to healthy calves. The cows remained seropositives during the study and N. caninum IFAT titers ranged from 100 to 12,800; only animal 234 presented one negative result in the first month of pregnancy. Significant differences of N. caninum IFAT titers were found between months from 1 to 9 of pregnancy by the Friedman Test (P<0.001). The statistical analysis showed an increase of N. caninum antibody titers from second and third trimester of pregnancy in relation to first trimester. High titers were observed in few cows after month fifth of pregnancy. This study showed a variation of specific antibody levels in seropositive cows during different gestational periods. The highest values were observed during the second and third trimester. The antibody increase after the fifth month of gestation was not associated to abortion. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/bjvras/article/view/26789 10.11606/issn.1678-4456.bjvras.2009.26789 |
url |
https://www.revistas.usp.br/bjvras/article/view/26789 |
identifier_str_mv |
10.11606/issn.1678-4456.bjvras.2009.26789 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/bjvras/article/view/26789/28572 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia |
dc.source.none.fl_str_mv |
Brazilian Journal of Veterinary Research and Animal Science; Vol. 46 Núm. 5 (2009); 395-399 Brazilian Journal of Veterinary Research and Animal Science; Vol. 46 No. 5 (2009); 395-399 Brazilian Journal of Veterinary Research and Animal Science; v. 46 n. 5 (2009); 395-399 Brazilian Journal of Veterinary Research and Animal Science; V. 46 N. 5 (2009); 395-399 1678-4456 1413-9596 reponame:Brazilian Journal of Veterinary Research and Animal Science instname:Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) instacron:USP |
instname_str |
Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Brazilian Journal of Veterinary Research and Animal Science |
collection |
Brazilian Journal of Veterinary Research and Animal Science |
repository.name.fl_str_mv |
Brazilian Journal of Veterinary Research and Animal Science - Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) |
repository.mail.fl_str_mv |
bjvras@usp.br |
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1797051559399391232 |