Influence of truck-transportation on the function of bronchoalveolar lavage fluid cells in cattle.
Vet Immunol Immunopathol
; 105(1-2): 67-74, 2005 May 01.
Article
em En
| MEDLINE
| ID: mdl-15797476
ABSTRACT
The study sought to evaluate whether truck-transportation had an impact on the respiratory immune system of cattle. Six castrated 6-10-month-old Holstein calves were shipped approximately 100 km by road for 4 h. Plasma and bronchoalveolar lavage (BAL) fluid samples, collected immediately before transportation, at 4 h (soon after transportation), and on days 3 and 7 after transportation, were examined. A marked elevation of plasma cortisol concentration was observed at 4 h, but this level was unchanged in controls. The chemiluminescence (CL) response of phagocytes in BAL fluid cells, composed mainly of alveolar macrophage, decreased significantly after transportation (P<0.05). Transportation increased the CD3+ T cell population significantly (P<0.05), and a significant increase (P<0.05) in the ratio of CD4+ to CD8+ cells in BAL fluid was evident. We conclude that short-term road transportation alters pulmonary cells and their function, which may engender bovine respiratory disorders.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sistema Respiratório
/
Estresse Fisiológico
/
Bovinos
/
Líquido da Lavagem Broncoalveolar
/
Veículos Automotores
Limite:
Animals
Idioma:
En
Revista:
Vet Immunol Immunopathol
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Japão