Cited by 454Multiple Sclerosis Research StudiesMitochondrial Function and PathologyParkinson's Disease Mechanisms and Treatments

Mitochondrial changes within axons in multiple sclerosis

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Mahad, D. J., Ziabreva, I., Campbell, G., Lax, N., White, K., Hanson, P. S., Lassmann, H., Turnbull, D. M.·2009·Brain

Abstract

Multiple sclerosis is the most common cause of non-traumatic neurological impairment in young adults. An energy deficient state has been implicated in the degeneration of axons, the pathological correlate of disease progression, in multiple sclerosis. Mitochondria are the most efficient producers of energy and play an important role in calcium homeostasis. We analysed the density and function of mitochondria using immunohistochemistry and histochemistry, respectively, in chronic active and inactive lesions in progressive multiple sclerosis. As shown before in acute pattern III and Balo's lesions, the mitochondrial respiratory chain complex IV activity is reduced despite the presence of mitochondria in demyelinated axons with amyloid precursor protein accumulation, which are predominantly located at the active edge of chronic active lesions. Furthermore, the strong non-phosphorylated neurofilament (SMI32) reactivity was associated with a significant reduction in complex IV activity and mitochondria within demyelinated axons. The complex IV defect associated with axonal injury may be mediated by soluble products of innate immunity, as suggested by an inverse correlation between complex IV activity and macrophage/microglial density in chronic lesions. However, in inactive areas of chronic multiple sclerosis lesions the mitochondrial respiratory chain complex IV activity and mitochondrial mass, judged by porin immunoreactivity, are increased within approximately half of large (>2.5 microm diameter) chronically demyelinated axons compared with large myelinated axons in the brain and spinal cord. The axon-specific mitochondrial docking protein (syntaphilin) and phosphorylated neurofilament-H were increased in chronic lesions. The lack of complex IV activity in a proportion of Na(+)/K(+) ATPase alpha-1 positive demyelinated axons supports axonal dysfunction as a contributor to neurological impairment and disease progression. Furthermore, in vitro studies show that inhibition of complex IV augments glutamate-mediated axonal injury (amyloid precursor protein and SMI32 reactivity). Our findings have important implications for both axonal degeneration and dysfunction during the progressive stage of multiple sclerosis.

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  • Oxidative damage and mitochondrial dysfunction are key features of MS pathology.

    “Oxidative damage and mitochondrial dysfunction are key features of MS pathology [277,278,279,280].”

    From Ageing, Cellular Senescence and Neurodegenerative Disease (2018) · cites this paper as [280]

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Research works printed but not linked: 3

  1. Compston A McAlpine’s Multiple Sclerosis 2005 Vol. 1 Churchill Livingstone London
  2. Hildebrand C Waxman SG Regional node-like membrane specializations in non-myelinated Brain Research 1983 258 23 32 24010160
  3. Kornek B Storch MK Weissert R Wallstroem E Stefferl A Olsson T Multiple sclerosis and chronic autoimmune encephalomyelitis: a comparative quantitative study of axonal injury in active, inactive, and remyelinated lesions Am J Pathol 2000 157 267 76 10880396 PMC1850217

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Authors
Mahad, D. J., Ziabreva, I., Campbell, G., Lax, N., White, K., Hanson, P. S., Lassmann, H., & Turnbull, D. M.
Affiliations
  • Newcastle University (GB)
  • Medical University of Vienna (AT)
Venue
Brain
Published
2009-03-17
Volume
132
Issue
5
Pages
1161-1174
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
OpenAlex
W2149515432
Cited by
454
References
51
Citations by year
2026: 13 · 2025: 14 · 2024: 18 · 2023: 17 · 2022: 20 · 2021: 27 · 2020: 21 · 2019: 34 · 2018: 32 · 2017: 27 · 2016: 20 · 2015: 40 · 2014: 34 · 2013: 27 · 2012: 38
FWCI
25.20
Type
journal article
Language
en
Open access
Locations
  • Brain (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
  • Newcastle University ePrints (Newcastle Univesity)
Funders
  • Wellcome Trust (078415, 074454)
  • Multiple Sclerosis Society
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Multiple Sclerosis Research Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
multiple sclerosis, axonal degeneration, demyelination, axons, amyloid precursor protein, neurofilaments, innate immunity, porin, syntaphilin, Na+/K+-ATPase, chronic active lesions, disease progression
MeSH terms
Adult, Aged, Aged, 80 and over, Animals, Autopsy, Axons, Brain, Cells, Cultured, Chronic Disease, Electron Transport Complex IV, Female, Humans, Immunohistochemistry, Male, Microscopy, Electron, Middle Aged, Mitochondria, Multiple Sclerosis, Spinal Cord, Blotting, Western, Glutamic Acid, Sodium Azide, Electron Transport Complex II, Mice

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