Cited by 314Multiple Sclerosis Research StudiesNeurogenesis and neuroplasticity mechanismsNeuroinflammation and Neurodegeneration Mechanisms

Extensive cortical remyelination in patients with chronic multiple sclerosis

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Albert, Monika, Antel, Jack, Brück, Wolfgang, Stadelmann, Christine·2007·Brain Pathology

Abstract

Recent studies revealed prominent cortical demyelination in patients with chronic multiple sclerosis (MS). Demyelination in white matter lesions is frequently accompanied by remyelination. This repair process, however, often remains incomplete and restricted to the lesion border. In the present study, we examined the frequency and extent of remyelination in cortical and white matter lesions in autopsy brain tissue of 33 patients with chronic MS. The majority of patients (29 of 33) harbored cortical demyelination. Remyelination of cortical lesions was identified light microscopically by the presence of thin and irregularly arranged myelin sheaths, and confirmed by electron microscopy. Extensive remyelination was found in 18%, remyelination restricted to the lesion border in 54%, and no remyelination in 28% of cortical lesions. A direct comparison of the extent of remyelination in white matter and cortical lesions of the same patients revealed that remyelination of cortical lesions was consistently more extensive. In addition, g‐ratios of fibers in areas of “normal appearing cortex” yielded values consistent with remyelination. Our data confirm the high prevalence of cortical demyelination in chronic MS and imply that the propensity to remyelinate is high in cortical MS lesions.

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Crossref · 10.1111/j.1750-3639.2006.00043.x

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  • Previous experimental and human work suggests that g-ratios are higher and internodes shorter in demyelinated cortex than in normal cortex, without directly associating newly formed internodes to BCAS1 expression.

    “Previous experimental and human work on demyelinated cortex suggests that g-ratios are indeed higher and internodes shorter than in NC, however, without directly associating newly formed internodes to the expression of BCAS1.10,17”

    From BCAS1-positive oligodendrocytes enable efficient cortical remyelination in multiple sclerosis (2025) · cites this paper as [17]

    The Results report higher g-ratios in remyelinated cortical areas than in control cortex (0.76 versus 0.65). They do not report g-ratios for demyelinated cortex or measure internode length. The paper also does not assess BCAS1 expression or link it to newly formed internodes. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • In multiple sclerosis, remyelination occurs in both white and grey matter and is more efficient in the cortex than in white matter lesions in the same patient.

    “In patients with multiple sclerosis, remyelination has been observed in both white and grey matter and found to be more efficient in the cortex.”
  • Remyelination after a demyelinating insult is more efficient in the cerebral cortex compared to the white matter.

    “Previous studies in human post-mortem tissue and experimental models suggested that remyelination after a demyelinating insult is more efficient in the cerebral cortex compared to the white matter.”

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Authors
Albert, M., Antel, J., Brück, W., & Stadelmann, C.
Affiliations
  • University of Göttingen (DE)
  • McGill University (CA)
Venue
Brain Pathology
Publisher
Wiley
Published
2007-01-22
Volume
17
Issue
2
Pages
129-138
ISSN
  • 1015-6305 (ISSN-L)
  • 1750-3639
OpenAlex
W2035195833
Cited by
314
References
2
Citations by year
2026: 9 · 2025: 13 · 2024: 18 · 2023: 15 · 2022: 16 · 2021: 30 · 2020: 14 · 2019: 15 · 2018: 13 · 2017: 21 · 2016: 12 · 2015: 16 · 2014: 15 · 2013: 20 · 2012: 22
FWCI
12.30
Type
journal article
Language
en
Open access
Locations
  • Brain Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • GRO (submittedVersion)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Multiple Sclerosis Research Studies
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
multiple sclerosis, remyelination, cortical demyelination, white matter lesions, myelin sheath, g-ratio, lesion border, autopsy brain tissue
MeSH terms
Adult, Aged, Aged, 80 and over, Brain, Female, Humans, Image Processing, Computer-Assisted, Immunohistochemistry, Male, Middle Aged, Myelin Sheath, In Situ Hybridization, Multiple Sclerosis, Chronic Progressive, Microscopy, Electron, Transmission

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