Perfil fenotípico de linfócitos periféricos de bovinos de raças européias / Phenotypic profile of peripheral blood lymphocytes from European bovines
Arq. bras. med. vet. zootec
;
56(1): 107-110, fev. 2004. tab, graf
Artigo
em Português
| LILACS
| ID: lil-362145
RESUMO
The phenotypic profile of bovine lymphocytes was evaluated in 18 bovines (Bos taurus) from three different breeds, being nine Holstein, six Hereford, and three Brown Swiss. All animals were free from ticks and hemoparasites, as determined after jugular vein blood sampling. The immunophenotypes of peripheral lymphocytes were evaluated by flow cytometry. Peripheral lymphocytes were exposed to bovine fluorescein-labeled monoclonal antibodies including anti-CD4, anti-CD8, and anti-purified bovine CD21 specificities. After lysing the erythrocytes with a commercial lysing solution (FACS TM ), the lymphocytes were washed, fixed, and evaluated by flow cytometry. Significant differences in the phenotypic profiles of peripheral lymphocytes among all breeds were found. Holstein animals showed a lower percentage of total T lymphocytes (CD4 and CD8) and higher percentage of B lymphocytes (CD21). In addition, the lymphocytes from Holstein animals showed a lower T/B ratio than the lymphocytes from Hereford animals. These results suggest the existence of different phenotypic profiles of peripheral lymphocytes from European breeds of cattle. Such differences may be related to the different pattern of immune response described for these breeds in the literature and may account to varying disease resistance among breeds.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Babesiose
/
Bovinos
/
Vacinas
/
Linfócitos
/
Imunofenotipagem
/
Saúde Pública Veterinária
/
Citometria de Fluxo
Limite:
Animais
Idioma:
Português
Revista:
Arq. bras. med. vet. zootec
Assunto da revista:
Medicina Veterinária
Ano de publicação:
2004
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Centro de Pesquisa René Rachou/BR
/
Fundação Oswaldo Cruz/BR
/
Universidade Federal de Minas Gerais/BR
/
Universidade Federal de Viçosa/BR
/
Universidade de Uberaba/BR
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