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[Role of autoimmunity in multiple sclerosis]
Pathologie-Biologie
|March 24, 2000
Summary
Multiple sclerosis (MS) involves an antigen-specific immune response attacking the central nervous system. Treatments modulating the immune system are effective, while immune-activating therapies worsen the condition.
Area of Science:
- Neuroimmunology
- Immunology
Context:
- Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system.
- Evidence suggests an antigen-specific immune response drives MS lesion formation and maintenance.
Purpose:
- To review the immunological evidence implicating antigen-specific reactions in multiple sclerosis.
- To correlate clinical observations with immunological findings and therapeutic responses.
Summary:
- MS lesions involve inflammatory cell infiltration in the brain and spinal cord white matter.
- Activated T and B lymphocytes, indicated by cerebrospinal fluid IgG oligoclonal bands and surface markers, are present in MS lesions.
- Genetic linkage studies show an association between MS and the Human Leukocyte Antigen (HLA) complex, crucial for antigen presentation to T lymphocytes.
Impact:
- Understanding the immune basis of MS informs therapeutic strategies.
- Modulatory immune therapies (e.g., beta-interferon, copolymer 1) show positive effects, while immunosuppressants reduce disease activity.
- Immune-activating treatments (e.g., gamma-interferon) exacerbate MS, highlighting the critical role of immune balance.