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Immunologic studies of a horse with lymphosarcoma
S Ansar Ahmed1, M Furr, W R Chickering
1Department of Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg 24061-0442.
Veterinary Immunology and Immunopathology
|October 1, 1993
Summary
This study investigated a horse with lymphosarcoma, revealing significant immunological abnormalities including decreased antibody levels and impaired T cell function. Immunosuppressive factors were identified in an abnormal serum protein peak.
Area of Science:
- Veterinary Immunology
- Equine Pathology
Background:
- Lymphosarcoma in horses presents complex immunological challenges.
- Understanding the immunological status is crucial for diagnosis and prognosis.
Observation:
- A horse with lymphosarcoma exhibited decreased serum immunoglobulin (IgM, IgG, IgA) levels despite hyperproteinemia.
- Increased spontaneous lymphocyte proliferation and decreased response to T cell stimulants (Concanavalin-A) were observed.
- Immunosuppressive factors were detected in the horse's serum.
Findings:
- An unusual monoclonal alpha peak was identified in the serum.
- Morphologically abnormal lymphocytes were widespread throughout the body.
- Fractionation revealed immunosuppressive factors localized within the abnormal alpha peak.
Implications:
- These findings highlight a unique immunopathological profile in equine lymphosarcoma.
- The presence of immunosuppressive factors may contribute to disease progression.
- Further research into these factors could inform therapeutic strategies for equine cancers.