Cited by 167Multiple Sclerosis Research StudiesNeuroinflammation and Neurodegeneration MechanismsPeripheral Neuropathies and Disorders

Mechanisms of Neurodegeneration and Axonal Dysfunction in Progressive Multiple Sclerosis

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Correale, Jorge, Marrodan, Mariano, Ysrraelit, María Célica·2019·Biomedicines

Abstract

Multiple Sclerosis (MS) is a major cause of neurological disability, which increases predominantly during disease progression as a result of cortical and grey matter structures involvement. The gradual accumulation of disability characteristic of the disease seems to also result from a different set of mechanisms, including in particular immune reactions confined to the Central Nervous System such as: (a) B-cell dysregulation, (b) CD8+ T cells causing demyelination or axonal/neuronal damage, and (c) microglial cell activation associated with neuritic transection found in cortical demyelinating lesions. Other potential drivers of neurodegeneration are generation of oxygen and nitrogen reactive species, and mitochondrial damage, inducing impaired energy production, and intra-axonal accumulation of Ca2+, which in turn activates a variety of catabolic enzymes ultimately leading to progressive proteolytic degradation of cytoskeleton proteins. Loss of axon energy provided by oligodendrocytes determines further axonal degeneration and neuronal loss. Clearly, these different mechanisms are not mutually exclusive and could act in combination. Given the multifactorial pathophysiology of progressive MS, many potential therapeutic targets could be investigated in the future. This remains however, an objective that has yet to be undertaken.

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  • Neurological deficits in multiple sclerosis patients result from two pathogenic events: acute inflammatory demyelination and axonal injury.

    “Neurological deficits in MS patients result from two pathogenic events: acute inflammatory demyelination and axonal injury [150,151].”

    From Beneficial Effects of Spirulina Consumption on Brain Health (2022) · cites this paper as [151]

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Authors
Correale, J., Marrodan, M., & Ysrraelit, M. C.
Affiliations
  • Fundación para la Lucha contra las Enfermedades Neurológicas de la Infancia (AR)
  • Department of Neurology, FLENI, Buenos Aires 1428, Argentina
Corresponding author
Correale, Jorge
Venue
Biomedicines
Publisher
MDPI AG
Published
2019-02-20
Volume
7
Issue
1
Pages
14
ISSN
2227-9059 (ISSN-L)
OpenAlex
W2917933180
Cited by
167
References
174
Citations by year
2026: 15 · 2025: 25 · 2024: 39 · 2023: 27 · 2022: 20 · 2021: 15 · 2020: 19 · 2019: 7
FWCI
2.27
Type
journal article
Language
en
Open access
Locations
  • Biomedicines (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Fleni
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Multiple Sclerosis Research Studies
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Neurology › Peripheral Neuropathies and Disorders
Keywords
multiple sclerosis, progressive multiple sclerosis, neurodegeneration, axonal dysfunction, axonal degeneration, B cell dysregulation, CD8+ T cells, demyelination, microglial activation, reactive oxygen species, mitochondrial damage, calcium accumulation, neuronal loss, disability progression, therapeutic target

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