Related Experiment Videos
Mice do not respond with delayed hypersensitivity to penicillin-derived determinants
Immunology
|March 1, 1982
Summary
Mice cannot develop delayed hypersensitivity (DH) to penicillin, even when using various application methods or penicillin-conjugated cells. This inability to mount a DH response to penicillin contrasts with their ability to form antibodies to penicillin conjugates.
Area of Science:
- Immunology
- Pharmacology
Background:
- Delayed hypersensitivity (DH) is a critical immune response.
- Penicillin is a widely used antibiotic with known allergenic potential.
Purpose of the Study:
- To investigate the capacity of mice to develop delayed hypersensitivity (DH) to penicillin.
- To explore different methods for inducing penicillin-specific DH in mice.
Main Methods:
- Mice were exposed to penicillin structures of varying lipophilicity via epicutaneous application, intracutaneous injection, or subcutaneous injection with Freund's complete adjuvant.
- Cellular conjugates of penicillin with red blood cells, lymph node cells, and epidermal cells were used for subcutaneous immunization.
- Picrylchloride was used as a positive control for inducing DH.
Main Results:
- Epicutaneous application and injections of penicillin did not induce DH in mice.
- Cellular conjugates of penicillin also failed to elicit a DH response.
- Control experiments with picrylchloride and other cellular conjugates successfully induced DH, demonstrating the mice's capacity for such reactions.
Conclusions:
- Mice are incapable of responding to penicillin with delayed hypersensitivity (DH).
- This unresponsiveness to penicillin-induced DH may be linked to the inability to elicit a response to penicillin itself, despite antibody formation to penicilloyl conjugates.