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An immunopathological study of deep pyoderma in the dog
1Department of Pathology and Microbiology, University of Bristol, Langford.
Research in Veterinary Science
|January 1, 1994
Summary
German Shepherd dogs with deep pyoderma show fewer T lymphocytes in affected skin compared to other breeds. This suggests T cell dysfunction may play a role in German Shepherd deep pyoderma.
Area of Science:
- Veterinary Dermatology
- Immunology
Background:
- Deep pyoderma is a common canine skin infection.
- T lymphocytes and B lymphocytes/plasma cells are key immune cells involved in skin health and disease.
Purpose of the Study:
- To compare T lymphocyte and B lymphocyte/plasma cell populations in normal canine skin versus deep pyoderma lesions.
- To investigate potential breed-specific differences, particularly in German Shepherd dogs.
Main Methods:
- Immunohistochemistry was used to quantify T lymphocytes (CD3+) and B lymphocytes/plasma cells (IgG+, IgM+, IgA+) in skin biopsies.
- Samples were analyzed from seven German Shepherd dogs and four dogs of other breeds with deep pyoderma, as well as normal skin controls.
Main Results:
- Dogs with deep pyoderma had comparable numbers of B lymphocytes/plasma cells regardless of breed.
- A significant reduction in T lymphocytes was observed in the affected skin of German Shepherd dogs compared to other breeds.
Conclusions:
- The findings suggest a breed-specific immune response in German Shepherds with deep pyoderma.
- T cell dysfunction may be implicated in the pathogenesis of deep pyoderma in German Shepherd dogs.