Distribution of immunoglobulin-bearing leukocytes in bovine mammary tissue infected chronically with Staphylococcus aureus.
Mammary parenchymal and test end tissues from cows with chronic Staphylococcus aureus mastitis were examined to determine the distribution of immunoglobulin (Ig) G1- and IgG2-bearing leukocytes. Leukocytes bearing IgG2 predominated in S. aureus infected quarters, with highest numbers observed at the Furstenberg's rosette followed by streak canal and parenchymal tissue areas. Significantly more IgG1- and IgG2-bearing leukocytes were observed at the Furstenberg's rosette and significantly more IgG2-bearing leukocytes were observed at the streak canal of S. aureus infected quarters compared to uninfected quarters. Receptors for cytophilic IgG on neutrophils and macrophages may increase efficiency of phagocytosis and improve the antimicrobial effectiveness of these cells in treat end tissues.
Department of Animal Sciences, University of Tennessee, Knoxville.
L M
LM
Sordillo
M Z
MZ
Doymaz
S P
SP
Oliver
D000818:Animals; D002417:Cattle; D005260:Female; D007074:Immunoglobulin G / Q000032:analysis*; D007958:Leukocyte Count / Q000662:veterinary; D007962:Leukocytes / Q000276:immunology*; D008321:Mammary Glands, Animal / Q000276:immunology*; D008414:Mastitis, Bovine / Q000276:immunology*; D013203:Staphylococcal Infections / Q000276:immunology / Q000662:veterinary*
D007074:Immunoglobulin G