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Published on: July 11, 2015
Effect of cytokines on bovine mammary gland immunity
1Mastitis Research Laboratory, Louisiana State University Agricultural Center, Homer 71040.
Insights
Cytokines like IL-2 and GCSF can help control mastitis in dairy cattle. Studies show these immune-regulating proteins boost lymphocyte and neutrophil responses, offering protection against bacterial infections.
Area of Science:
- Immunology
- Veterinary Medicine
- Dairy Science
Background:
- Cytokines are crucial glycoproteins regulating immune responses.
- Interleukin-2 (IL-2) influences lymphoid cells, while granulocyte colony-stimulating factor (GCSF) affects neutrophils.
- Mastitis is a significant concern in dairy cattle, impacting milk production and animal welfare.
Purpose of the Study:
- To investigate the potential role of IL-2 and GCSF in managing bovine mastitis.
- To evaluate the effects of IL-2 on lymphocyte populations and antibody production in the mammary gland.
- To assess the impact of GCSF on neutrophil counts and protection against Staphylococcus aureus.
Main Methods:
- Administration of IL-2 directly into the bovine mammary gland.
- Systemic administration of GCSF to dairy cattle.
- Monitoring lymphocyte and neutrophil populations in blood and milk.
- Assessing protection against Staphylococcus aureus challenge.
Main Results:
- IL-2 administration expanded lymphocyte populations and increased local antibody production in the mammary gland.
- GCSF administration increased neutrophil numbers in peripheral blood and milk.
- GCSF treatment provided partial protection against Staphylococcus aureus challenge.
Conclusions:
- Cytokines, specifically IL-2 and GCSF, demonstrate potential for controlling mastitis in dairy cattle.
- Targeting immune responses with cytokines may offer a novel approach to mastitis prevention and treatment.
- Further research into cytokine therapy could improve dairy herd health and productivity.
Abstract:
Cytokines are a family of glycoproteins produced by various cell types in response to specific stimuli that regulate the immune response. This paper reviews recent studies on two different cytokines, each with its own effector cell type: interleukin-2 (IL-2), which regulates lymphoid cell responses; and granulocyte colony-stimulating factor (GCSF), which regulates neutrophil responses. In the first study, administration of IL-2 to the bovine mammary gland was found to stimulate the expansion of lymphocyte populations and increase local antibody production. In the second study, systemic administration of GCSF increased peripheral blood as well as milk neutrophil populations, which afforded some protection against Staphylococcus aureus challenge. Results suggest a role for cytokines in the control of mastitis in dairy cattle.
