Lymphocytes from one side of the bovine mammary gland migrate to the contra lateral gland and lymph node tissue

• Published in: Veterinary Immunology and Immunopathology Vol. 108; no. 3; pp. 409 - 415
• Main Authors: Kimura, Kayoko, Harp, James A., Goff, Jesse P., Olsen, Steven C.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 15.12.2005
• Subjects: Animals; bacterial infections; bacterial toxins; Bovine; bovine mastitis; Cattle - immunology; cell motility; Cell Movement; dairy cows; Escherichia coli; Escherichia infections; Female; immunology; lactation; liver; lymph nodes; Lymph Nodes - cytology; Lymph Nodes - immunology; Lymphocyte migration; lymphocytes; Lymphocytes - cytology; Lymphocytes - immunology; Mammary gland; mammary glands; Mammary Glands, Animal - cytology; Mammary Glands, Animal - immunology; Mastitis; Milk - cytology; spleen; vaccines; zymosan; Mastitis; Mammary gland; Bovine; Lymphocyte migration
• ISSN: 0165-2427; 1873-2534; 1365-2567
• DOI: 10.1016/j.vetimm.2005.05.014

The four quarters of bovine mammary glands are completely separated and two quarters on each side (right or left) are connected to ipsi lateral supra mammary lymph nodes. It is not clear whether cells infused into the cistern of the mammary gland are capable of migrating to lymph nodes or the general circulation. To examine cell migration, a prescapular lymph node was removed from each of two lactating and three non-lactating dairy cows, and isolated lymphocytes were stained with Hoechst 33342. Autologous stained cells were infused into the mammary gland and then activated by intramammary infusion of zymosan-stimulated serum (source of C5a). After 17 h, Escherichia coli J5 bacterin was infused into the contra lateral mammary gland to mimic infection. After 43 h cows were euthanized and tissue samples (mammary quarters, right and left supra mammary, mesenteric, ileocecal and prescapular lymph nodes, liver and spleen) were collected for microscopic examination as well as flow cytometric analysis. Hoechst stained cells were detected not only in infused quarters, but also in contra lateral quarters as well as in both supra mammary lymph nodes. This indicates that cells infused into the mammary gland migrate to contra lateral tissues and supra mammary lymph nodes.