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Macrophage function in deer

M L Cross1, A J Thomson, L J Slobbe

  • 1Department of Microbiology, University of Otago, New Zealand.

Veterinary Immunology and Immunopathology
|January 1, 1996
PubMed
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Red deer macrophages exhibit inflammatory and immune functions similar to other mammals, producing superoxide and key cytokines in response to stimuli. These findings support their role in resistance to bovine tuberculosis.

Area of Science:

  • Veterinary Immunology
  • Comparative Immunology

Background:

  • Bovine tuberculosis poses a significant threat to cattle and wildlife.
  • Red deer (Cervus elaphus) are susceptible to natural infection with Mycobacterium bovis.
  • Understanding cervine immune responses is crucial for disease management.

Purpose of the Study:

  • To characterize macrophage inflammatory and immune functions in red deer.
  • To evaluate red deer macrophages as a model for studying bovine tuberculosis.
  • To investigate the role of cervine macrophages in mycobacterial infection resistance.

Main Methods:

  • Isolation and enrichment of deer macrophages from peripheral blood mononuclear cells.
  • Assay of respiratory burst activity (superoxide production).
  • Measurement of lysosomal enzyme activity (acid phosphatase, lysozyme).

Related Experiment Videos

  • Quantification of cytokine production (IL-1, TNF) via cell-based assays and Northern blotting.
  • Assessment of macrophage-mediated T-cell proliferation in response to mycobacterial antigens.

    • Main Results:

    • Cervine macrophages produced superoxide anion but not detectable nitric oxide.
    • Lysosomal enzymes were present intercellularly and extracellularly.
    • Lipopolysaccharide (LPS) stimulation enhanced superoxide and acid phosphatase production.
    • LPS induced significant production of interleukin-1 (IL-1) and tumour necrosis factor (TNF).
    • Macrophages stimulated T-cell proliferation when pulsed with Mycobacterium bovis antigens.

    Conclusions:

    • Macrophage inflammatory and immune responses in red deer share similarities with other mammalian species.
    • Cervine macrophages possess key functions relevant to controlling mycobacterial infections.
    • Red deer macrophages represent a valuable model for studying bovine tuberculosis.