Related Experiment Videos
Immunology: resistance to paratuberculosis
1International Association for Paratuberculosis, Inc. Rehoboth, Massachusetts, USA.
Summary
Mycobacterium paratuberculosis causes disease through complex immune cell interactions. Resistance requires a strong cellular immune response to infection and reinfection, otherwise immune reactions cause disease manifestations.
Area of Science:
- Immunology
- Veterinary Medicine
- Microbiology
Background:
- Johne's disease, caused by Mycobacterium paratuberculosis, affects ruminants.
- The disease involves intricate interactions between lymphoid and phagocytic cells in immune responses.
- Both peripheral and mucosal immunity play roles in the disease pathogenesis.
Purpose of the Study:
- To elucidate the immunologic mechanisms underlying Mycobacterium paratuberculosis infection.
- To understand the factors contributing to disease resistance versus susceptibility.
- To explore the role of immune reactions in disease manifestation.
Main Methods:
- Analysis of lymphoid and phagocytic cell interactions.
- Evaluation of cellular immune responses to primary and secondary infections.
- Characterization of the immunologic spectrum in infected animals.
Main Results:
- Disease pathogenesis is linked to complex immune cell interplay.
- Effective cellular immunity is crucial for resistance to Mycobacterium paratuberculosis.
- Failure to mount an adequate immune response leads to immunopathology.
Conclusions:
- Mycobacterium paratuberculosis infection outcome depends on the host's immune response.
- The immune system's reaction, not just the pathogen, drives disease symptoms.
- Understanding these immune dynamics is key for managing Johne's disease.