Resultado da pesquisa (3)
Termo utilizado na pesquisa Clostridium perfringens type D
#1 - Kinetics of epsilon antitoxin antibodies in different strategies for active immunization of lambs against enterotoxaemia, 33(8):979-982
Abstract in English:
ABSTRACT.- Costa H.F., Babboni S.D., Rodrigues C.F.C., Padovani C.R., Dutra I.S., Paulan S.C. & Modolo J.R. 2013. Kinetics of epsilon antitoxin antibodies in different strategies for active immunization of lambs against enterotoxaemia. Pesquisa Veterinária Brasileira 33(8):979-982. Departamento de Higiene Veterinária e Saúde Pública, Escola de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Distrito de Rubião Júnior s/n, Cx. Postal 524, Botucatu, SP 18618-970, Brazil. E-mail: jrmodolo@fmvz.unesp.br
Enterotoxaemia, a common disease that affects domestic small ruminants, is mainly caused by the epsilon toxin of Clostridium perfringens type D. The present study tested four distinct immunization protocols to evaluate humoral response in lambs, a progeny of non-vaccinated sheep during gestation. Twenty-four lambs were randomly allocated into four groups according to age (7, 15, 30 and 45 days), receiving the first dose of epsilon toxoid commercial vaccine against clostridiosis with booster after 30 days post vaccination. Indirect ELISA was performed after the first vaccine dose and booster to evaluate the immune response of the lambs. Results showed that for the four protocols tested all lambs presented serum title considered protective (≥0.2UI/ml epsilon antitoxin antibodies) and also showed that the anticipation of primovaccination of lambs against enterotoxaemia conferred serum title considered protective allowing the optimization of mass vaccination of lambs.
Abstract in Portuguese:
RESUMO.- Costa H.F., Babboni S.D., Rodrigues C.F.C., Padovani C.R., Dutra I.S., Paulan S.C. & Modolo J.R. 2013. Kinetics of epsilon antitoxin antibodies in different strategies for active immunization of lambs against enterotoxaemia. [Cinética dos anticorpos antitoxina epsilon em diferentes estratégias de imunização ativa em cordeiros contra a enterotoxemia.] Pesquisa Veterinária Brasileira 33(8):979-982. Departamento de Higiene Veterinária e Saúde Pública, Escola de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Distrito de Rubião Júnior s/n, Cx. Postal 524, Botucatu, SP 18618-970, Brazil. E-mail: jrmodolo@fmvz.unesp.br
Enterotoxemia, uma das mais comuns enfermidades que acomete os pequenos ruminantes domésticos, é causada principalmente pela toxina épsilon de Clostridium perfringens tipo D. O presente estudo avaliou a resposta humoral conferida por quatro protocolos distintos de primovacinação na progênie de ovelhas não vacinadas durante a gestação. Vinte e quatro cordeiros foram aleatoriamente divididos em quatro grupos de acordo com a idade (dias) que receberam a primeira dose da vacina comercial contra clostridiose contendo toxóide epsilon na sua formulação. Todos os cordeiros foram vacinados aos 7, 15, 30 ou 45 dias de idade e receberam um reforço da dose 30 dias após a vacinação. A avaliação sorológica dos cordeiros pelo teste de ELISA indireto foi realizada por ocasião da administração da primeira dose da vacina. Os resultados elucidaram não haver comprometimento da resposta imune de cordeiros vacinados tanto aos 7, 15, 30 ou 45 dias de idade associada ao reforço da dose 30 dias após, demonstrando assim que a antecipação da primeira vacinação conferiu proteção aos cordeiros contra a enterotoxemia, permitindo otimizar o planejamento da vacinação em massa dos cordeiros.
#2 - Kinetics of colostral antibodies against epsilon toxin produced by Clostridium perfringens type D in lambs, 32(1):17-21
Abstract in English:
ABSTRACT.- Costa H.F., Babboni S.D., Rodrigues, C.F., Padovani C.R., Dutra I.S. & Modolo J.R. 2012. [Kinetics of colostral antibodies against epsilon toxin produced by Clostridium perfringens type D in lambs.] Cinética dos anticorpos de origem colostral contra a toxina épsilon de Clostridium perfringens tipo D em cordeiros. Pesquisa Veterinária Brasileira 32(1):17-21. Departamento de Higiene Veterinária e Saúde Pública, Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Cx. Postal 524, Botucatu, SP 18618-970, Brazil. E-mail: jrmodolo@fmvz.unesp.br
Enterotoxemia, a disease that affect small ruminants, is caused mainly by the epsilon toxin from Clostridium perfringens type D. This study evaluated the kinetics of epsilon antitoxin colostral antibodies in lambs born to ewes submitted to two different types of health management. A group of pregnant ewes (n=6) was vaccinated with a single dose of commercial vaccine against polyvalent clostridial toxoid containing epsilon in its formulation some 30 days before the expected date of birth. Another group of ewes (n=6) of the same gestational age were not vaccinated. Immediately after birth, before intake of colostrum, blood samples were collected from their lambs as well as 30 and 60 days of age for serum evaluation by ELISA. The results allow to conclude that vaccination of pregnant ewes 30 days before parturition allowed the transfer of colostral antibodies specific enough to guarantee the immunity considered protective (0,5UI/ml) of the newborn lamb against enterotoxemia until its entry into the feedlot, with 60 days of age.
Abstract in Portuguese:
RESUMO.- Costa H.F., Babboni S.D., Rodrigues, C.F., Padovani C.R., Dutra I.S. & Modolo J.R. 2012. [Kinetics of colostral antibodies against epsilon toxin produced by Clostridium perfringens type D in lambs.] Cinética dos anticorpos de origem colostral contra a toxina épsilon de Clostridium perfringens tipo D em cordeiros. Pesquisa Veterinária Brasileira 32(1):17-21. Departamento de Higiene Veterinária e Saúde Pública, Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Cx. Postal 524, Botucatu, SP 18618-970, Brazil. E-mail: jrmodolo@fmvz.unesp.br
Enterotoxemia, uma das mais importantes enfermidades que acomete os pequenos ruminantes domésticos, é causada principalmente pela toxina épsilon de Clostridium perfringens tipo D. O presente estudo avaliou a cinética de anticorpos colostrais antitoxina épsilon em cordeiros nascidos de ovelhas submetidas a dois diferentes tipos de manejo sanitário. Um grupo de ovelhas prenhes (n=6) foi vacinado com uma dose única de vacina comercial polivalente contra clostridioses contendo toxóide épsilon na sua formulação cerca de 30 dias antes da data prevista para a parição. Outro grupo de ovelhas (n=6) de mesma idade gestacional não foi vacinado. Imediatamente após o parto, antes da ingestão do colostro, foram colhidas amostras sanguíneas dos respectivos cordeiros, bem como aos 30 e 60 dias de idade e submetidas à avaliação sorológica pelo teste de ELISA indireto. Os resultados encontrados permitem concluir que a vacinação de ovelhas prenhes 30 dias antes do parto contra a enterotoxemia causada pela toxina épsilon, com dose única de produto comercial, induz imunidade passiva em níveis considerados protetores (>0,5UI/ml) aos cordeiros por, no mínimo, 60 dias de idade.
#3 - Immunophrophylactic strategies against enterotoxemia caused by Clostridium perfringens type D in goats
Abstract in English:
Veschi J.L.A., Dutra I.S., Miyakawa M.E.F., Perri S.H.V. & Uzal F.A. 2006. Immunophrophylactic strategies against enterotoxemia caused by Clostridium perfringens type D in goats. Pesquisa Veterinária Brasileira 26(1):51-54. Departamento de Produção e Saúde Animal, Universidade Estadual Paulista, Rua Clóvis Pestana 793, Araçatuba, SP 16050-680, Brazil. E-mail: isdutra@fmva.unesp.br
The serological response to an experimental vaccine against Clostridium perfringens type D enterotoxemia was evaluated in four groups of goats. Group 1 received colostrum from unvaccinated cows and no vaccine. Groups 2, 3 and 4 received colostrum from vaccinated cows. In addition, Groups 3 and 4 received a vaccine dose at 80 days of age, and Group 4 received a second vaccine dose at 120 days of age. Serum antibody levels were determined by ELISA in cows before and after calving, and in goats at 3, 80, 120 and 160 days of age. No significant difference in serum antibody levels was observed between vaccinated and unvaccinated cows, or between the four groups of goats evaluated at 3 days of life. Groups 3 and 4 presented mean antibody titers of 0.6 and 1.1 IU/ml, respectively, 40 days after first vaccination. The vaccine response of Group 4 was 1.8 IU/ml 40 days after the booster dose and was higher than that observed for Group 3 (0.2 IU/ml). Thus, in the proposed regimen the use of heterologous colostrum did not induce passive immunization in goat kids. However, first vaccination and a booster dose after 40 days triggered satisfactory antibody levels.
Abstract in Portuguese:
Veschi J.L.A., Dutra I.S., Miyakawa M.E.F., Perri S.H.V. & Uzal F.A. 2006. Immunophrophylactic strategies against enterotoxemia caused by Clostridium perfringens type D in goats. Pesquisa Veterinária Brasileira 26(1):51-54. Departamento de Produção e Saúde Animal, Universidade Estadual Paulista, Rua Clóvis Pestana 793, Araçatuba, SP 16050-680, Brazil. E-mail: isdutra@fmva.unesp.br
The serological response to an experimental vaccine against Clostridium perfringens type D enterotoxemia was evaluated in four groups of goats. Group 1 received colostrum from unvaccinated cows and no vaccine. Groups 2, 3 and 4 received colostrum from vaccinated cows. In addition, Groups 3 and 4 received a vaccine dose at 80 days of age, and Group 4 received a second vaccine dose at 120 days of age. Serum antibody levels were determined by ELISA in cows before and after calving, and in goats at 3, 80, 120 and 160 days of age. No significant difference in serum antibody levels was observed between vaccinated and unvaccinated cows, or between the four groups of goats evaluated at 3 days of life. Groups 3 and 4 presented mean antibody titers of 0.6 and 1.1 IU/ml, respectively, 40 days after first vaccination. The vaccine response of Group 4 was 1.8 IU/ml 40 days after the booster dose and was higher than that observed for Group 3 (0.2 IU/ml). Thus, in the proposed regimen the use of heterologous colostrum did not induce passive immunization in goat kids. However, first vaccination and a booster dose after 40 days triggered satisfactory antibody levels.
