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Pathogenesis and spectrum of autoimmunity.
1Department of Medicine, College of Medicine, Upstate Medical University, State University of New York, Syracuse, NY, USA.
Methods in Molecular Medicine
|August 3, 2004
Summary
The immune system maintains self-tolerance through apoptosis and regulatory T cells. Failures in these mechanisms, due to factors like molecular mimicry, can lead to autoimmunity.
Area of Science:
- Immunology
- Autoimmunity research
Background:
- The immune system distinguishes self from non-self to protect the host.
- Immune tolerance mechanisms develop during maturation to prevent self-reactivity.
- Autoreactive cells are normally eliminated via apoptosis or suppressed by regulatory T cells.
Purpose of the Study:
- To explore the mechanisms of immune tolerance and its breakdown.
- To understand how autoreactive cells evade elimination.
- To identify factors contributing to the development of autoimmunity.
Main Methods:
- Review of immune system maturation and tolerance induction processes.
- Analysis of mechanisms leading to the survival of autoreactive cells.
- Examination of genetic and environmental influences on immune responses and tolerance.
Main Results:
- Autoreactive B and T cells are typically eliminated through apoptosis or regulatory T cell suppression.
- Survival of autoreactive cells can occur due to apoptosis failure or molecular mimicry.
- A complex interplay of genetic and environmental factors governs immune responses and tolerance.
Conclusions:
- Autoimmunity arises from the failure of one or more immune tolerance mechanisms.
- Molecular mimicry and aberrant lymphokine production are potential pathways for autoreactive cell survival.
- Understanding these pathways is crucial for addressing autoimmune diseases.