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[Axonal damage in multiple sclerosis]
Halina Bartosik-Psujek1, Zbigniew Stelmasiak
1Katedry i Kliniki Neurologii A.M. w Lublinie.
Abstract:
Traditionally, it was believed in MS, that axonal loss occurred in chronic lesions. However, new findings suggest that axonal transection can begin very early in the course of multiple sclerosis and axonal damage was found in active and chronic active MS lesions, particularly in areas of acute inflammation and demyelination. The mechanisms of axonal loss are uncertain, but may involve axonal degeneration secondary to demyelination, the action of inflammatory mediators and immune attack directed at axonal components. Axonal destruction and it's progression, is the major cause of irreversible damage in the CNS and the increase of disability in MS patients. Currently, new diagnostic methods (MRI, MR spectroscopy, magnetic transfer, histopathological and biochemical study) allow better to know the mechanisms of neuronal damage.
Insights
Axonal loss in multiple sclerosis (MS) begins early, even in active lesions, challenging previous beliefs. This early damage significantly contributes to irreversible central nervous system (CNS) damage and increased patient disability.
Area of Science:
- Neuroscience
- Immunology
- Pathology
Context:
- Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS).
- Traditionally, axonal loss in MS was thought to occur only in chronic lesions.
- Emerging evidence indicates early axonal damage is a key feature of MS pathogenesis.
Purpose:
- To investigate the timing and characteristics of axonal damage in multiple sclerosis (MS).
- To explore potential mechanisms underlying early axonal loss in MS.
- To highlight the role of advanced diagnostic methods in understanding neuronal damage in MS.
Summary:
- Contrary to traditional views, axonal transection and damage occur early in multiple sclerosis (MS), particularly in active inflammatory and demyelinating lesions.
- Mechanisms may include secondary axonal degeneration, inflammatory mediators, and immune attacks targeting axonal components.
- Axonal destruction is a primary driver of irreversible CNS damage and progressive disability in MS patients.
Impact:
- This research reframes the understanding of MS progression, emphasizing early intervention possibilities.
- Highlights the critical role of axonal damage in irreversible neurological deficits.
- Underscores the importance of advanced diagnostic tools for elucidating neuronal injury mechanisms in MS.