Streptococcal products and leukocyte activities

M Lambot, J J Letesson, N Lostrie, A Depelchin

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Various streptococcal species are directly responsible for udder infections which should normally be countered by polymorphonuclear neutrophils (PMNs). In order to detect a putative inhibition of streptococcal products on the activities of bovine PMNs, we used a combination of four tests which permits an adequate evaluation of PMNs functions, e.g. PMN adherence on endothelial cells, chemotactic assay, phagocytosis of bacteria labelled with fluorescein isothiocyanate (FITC) and measurement of anion superoxide production. The conclusion is that neither of the two pathogenic streptococcal species isolated from mastitis appeared to produce in vitro factors affecting PMN activities.
langue originaleAnglais
Pages (de - à)129-40
Nombre de pages12
journalVeterinary immunology and immunopathology
Numéro de publication1-2
Etat de la publicationPublié - 1992

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