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Hypersensitivity responses to Staphylococcus aureus infections in rabbits. An experimental study
J P Varshney1, M P Kapur, J R Sadana
1Department of Veterinary Medicine, Haryana Agricultural University, Hissar, India.
Indian Journal of Experimental Biology
|January 1, 1991
Summary
Repeated Staphylococcus aureus infections in rabbits caused immediate and delayed hypersensitivity skin reactions. Early responses showed edema and polymorphonuclear cells, while later reactions involved lymphocytes.
Area of Science:
- Immunology
- Veterinary Medicine
- Dermatology
Background:
- Staphylococcus aureus is a common pathogen causing bovine mastitis.
- Understanding the immune response to S. aureus infections is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the hypersensitivity reactions in rabbits following repeated S. aureus infections.
- To characterize the cellular infiltrate in skin responses at different time points.
Main Methods:
- Rabbits were infected weekly with S. aureus (bovine mammary origin) three times.
- Skin responses were analyzed at 6 hours and 24 hours post-infection.
Main Results:
- Repeated S. aureus infections induced both immediate and delayed hypersensitivity.
- The 6-hour skin response featured edema, hemorrhages, and polymorphonuclear cell infiltration.
- The 24-hour response was characterized by mononuclear cells, particularly lymphocytes, in the dermis.
Conclusions:
- The study demonstrates a biphasic hypersensitivity response to S. aureus in rabbits.
- These findings highlight the dynamic cellular changes during S. aureus-induced skin inflammation.