Phagocytic activity of bovine polymorphonuclear neutrophil leucocytes.
J Dairy Res
; 61(2): 271-9, 1994 May.
Article
en En
| MEDLINE
| ID: mdl-8063967
ABSTRACT
Two different investigations were conducted on the chemiluminescent activity of bovine milk polymorphonuclear neutrophil leucocytes (PMN) activated by different stimuli zymosan, derived from the wall of Saccharomyces cerevisiae (Experiment A), and Streptococcus uberis and Escherichia coli (Experiment B). In Experiment A, a quarter with a phagocytic activity of PMN < 20 mV/1000 PMN following stimulation with zymosan was found to be 23 times more likely to be a clinical mastitis case than a quarter with phagocytic activity above this threshold value. In Experiment B, calculation of the odds ratio showed similar results following stimulation with Str. uberis or Esch. coli. These results provide evidence that immunocompromisation of mammary gland defences could predispose to clinical mastitis. They also support the need to challenge phagocytic cells with appropriate stimuli, and the Esch. coli test seems to be the most sensitive.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fagocitosis
/
Bovinos
/
Leche
/
Mastitis Bovina
/
Neutrófilos
Límite:
Animals
Idioma:
En
Revista:
J Dairy Res
Año:
1994
Tipo del documento:
Article
País de afiliación:
Italia