In vitro studies of group E streptococci in swine leukocytes. I. Phagocytic and bactericidal properties of polymorphonuclear leukocytes from swine

Serum from both immune and nonimmune ten-week-old swine contained factors which promoted phagocytosis of group E Streptococci (GES). The factors in nonimmune serum, which were heat labile at 70 degrees C for ten minutes, were less efficient than the factors present in immune serum.Bactericidal activ...

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Published inCanadian journal of comparative medicine Vol. 37; no. 2; pp. 107 - 111
Main Authors Cargill, C.F, Olson, L.D
Format Journal Article
LanguageEnglish
Published Canada 01.04.1973
Subjects
animal diseases
animal health
Animals
Antigen-Antibody Complex
Female
Hot Temperature
Immune Sera
Immunoglobulin G
Immunoglobulin M
In Vitro Techniques
Leukocyte Count
Leukocytes - immunology
Mercaptoethanol - pharmacology
Phagocytes - immunology
Phagocytosis
Streptococcus - drug effects
Streptococcus - immunology
Swine
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Summary:Serum from both immune and nonimmune ten-week-old swine contained factors which promoted phagocytosis of group E Streptococci (GES). The factors in nonimmune serum, which were heat labile at 70 degrees C for ten minutes, were less efficient than the factors present in immune serum.Bactericidal activity of the polymorphonuclear (PMN) leukocytes against GES was observed with serum from both immune and nonimmune ten-week-old swine, as well as with serum from normal sows and piglets. However, the bactericidal activity of PMN leukocytes in serum from either normal sows or immune ten-week-old swine was greater than the bactericidal activity of PMN leukocytes in either piglet serum or serum from nonimmune ten-week-old swine. When the serum was either heated to 70 degrees C for ten minutes or treated with 2-mercaptoethanol, bactericidal activity of PMN leukocytes against GES was only observed in the presence of immune serum.
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Portion of a dissertation presented by the senior author to the Graduate Faculty of the University of Missouri as partial Fulfillment of the requirements for the degree, Doctor of Philosophy.
ISSN:0008-4050