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[Involvement of the peripheral nervous system in multiple sclerosis]
P Couratier1, S Boukhris, L Magy
1Service de Neurologie, CHU Limoges. couratie@unilim.fr
Revue Neurologique
|December 17, 2004
Summary
Multiple sclerosis (MS) may involve peripheral nervous system abnormalities, though prevalence is debated. Subtle nerve issues are detectable via electrophysiological and neuropathological exams, suggesting shared mechanisms with central nervous system demyelination.
Area of Science:
- Neurology
- Neuroimmunology
- Demyelinating Diseases
Context:
- Multiple sclerosis (MS) is primarily a central nervous system (CNS) demyelinating disease.
- Recurring evidence suggests potential peripheral nervous system (PNS) involvement in MS.
- The exact prevalence and nature of PNS abnormalities in MS patients remain controversial.
Purpose:
- To explore the association between multiple sclerosis and peripheral nervous system abnormalities.
- To review existing literature on co-occurrence of MS with peripheral neuropathies.
- To discuss potential mechanisms underlying CNS and PNS demyelination.
Summary:
- While MS is CNS-limited, case reports document co-occurrence with peripheral neuropathy (radiculopathy, mononeuropathy, polyneuropathy).
- Electrophysiological and neuropathological examinations reveal subtle nerve abnormalities in MS patients more frequently than clinically apparent.
- Hypotheses suggest shared antigenic properties or diffusing factors between CNS and PNS myelin, alongside molecular plasticity, may explain findings.
Impact:
- Highlights the need for further prospective studies to determine the prevalence of peripheral neuropathy in MS.
- Suggests that electrophysiological and neuropathological assessments are crucial for comprehensive MS evaluation.
- Provides insights into potential shared pathophysiological mechanisms in CNS and PNS demyelination, informing future research and therapeutic strategies.