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Related Experiment Videos

Spinal cord axonal loss in multiple sclerosis: a post-mortem study.

P Ganter1, C Prince, M M Esiri

  • 1Departments of Clinical Neurology, University of Oxford, Neuropathology, Radcliffe Infirmary NHS Trust, Oxford, UK.

Neuropathology and Applied Neurobiology
|January 13, 2000
PubMed
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Multiple sclerosis (MS) causes significant axonal loss and spinal cord atrophy, particularly in the corticospinal tracts. These changes, especially in small nerve fibers, are detectable early and are more pronounced in males.

Area of Science:

  • Neuroscience
  • Neuropathology
  • Multiple Sclerosis Research

Background:

  • Growing evidence links axonal damage to clinical disability in multiple sclerosis (MS).
  • Understanding spinal cord changes is crucial for MS progression insights.

Purpose of the Study:

  • To investigate axonal loss and white matter atrophy in the spinal cord's lateral columns in MS.
  • To quantify nerve fiber density in the corticospinal tracts at C3 and T2 levels.
  • To compare these changes between males and females with MS and controls.

Main Methods:

  • Post-mortem examination of spinal cord tissue from 43 MS patients and 31 controls.
  • Image analysis to measure lateral column cross-sectional area and nerve fiber density in corticospinal tracts.
  • Analysis focused on small ( < 5 µm²) and large (≥ 5 µm²) nerve fibers.

Related Experiment Videos

Main Results:

  • Significant reductions in lateral column area and nerve fiber density observed in MS patients at C3 and T2.
  • Axonal loss was predominantly in small nerve fibers, with no significant reduction in large fibers.
  • Males with MS showed greater reductions in nerve fiber density compared to females with MS.

Conclusions:

  • Substantial axonal loss and spinal cord white matter atrophy occur in MS, detectable at C3 and T2.
  • These pathological changes, particularly in small fibers, are evident early in the disease course.
  • Sex-based differences in axonal loss are present in multiple sclerosis.