Cited by 659Amyotrophic Lateral Sclerosis ResearchTraumatic Brain Injury ResearchAlzheimer's disease research and treatments

TDP-43 proteinopathy and motor neuron disease in chronic traumatic encephalopathy

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McKee, Ann C., Gavett, Brandon E., Stern, Robert A., Nowinski, Christopher J., Cantu, Robert C., Kowall, Neil W., Perl, Daniel P., Hedley-Whyte, E. Tessa +8 more·2010·Journal of Neuropathology & Experimental Neurology

Abstract

Epidemiological evidence suggests that the incidence of amyotrophic lateral sclerosis is increased in association with head injury. Repetitive head injury is also associated with the development of chronic traumatic encephalopathy (CTE), a tauopathy characterized by neurofibrillary tangles throughout the brain in the relative absence of β-amyloid deposits. We examined 12 cases of CTE and, in 10, found a widespread TAR DNA-binding protein of approximately 43kd (TDP-43) proteinopathy affecting the frontal and temporal cortices, medial temporal lobe, basal ganglia, diencephalon, and brainstem. Three athletes with CTE also developed a progressive motor neuron disease with profound weakness, atrophy, spasticity, and fasciculations several years before death. In these 3 cases, there were abundant TDP-43-positive inclusions and neurites in the spinal cord in addition to tau neurofibrillary changes, motor neuron loss, and corticospinal tract degeneration. The TDP-43 proteinopathy associated with CTE is similar to that found in frontotemporal lobar degeneration with TDP-43 inclusions, in that widespread regions of the brain are affected. Akin to frontotemporal lobar degeneration with TDP-43 inclusions, in some individuals with CTE, the TDP-43 proteinopathy extends to involve the spinal cord and is associated with motor neuron disease. This is the first pathological evidence that repetitive head trauma experienced in collision sports might be associated with the development of a motor neuron disease.

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  • It is well established that a large percentage of former athletes identified as having CTE neuropathology also have neuropathology associated with age related neurodegenerative diseases such as AD, PD, Lewy body disease, hippocampal sclerosis, and ALS to the extent that they meet full neuropathological criteria for an alternative, well-characterized neurodegenerative disease.

    “It is now well established that a large percentage of former athletes identified as having CTE neuropathology also have neuropathology associated with age related neurodegenerative diseases such as AD, PD, Lewy body disease, hippocampal sclerosis, and ALS [14, 41–44] to the extent that they meet full neuropathological criteria for an alternative, well-characterized neurodegenerative disease [16].”
  • In 2013, the largest single cohort of neuropathologically confirmed cases of CTE was reported.

    “In 2013, the largest single cohort of neuropathologically confirmed cases of CTE was reported [127]”

    From The neuropathology of sport (2014) · cites this paper as [127]

  • CTE is associated with the development of other neurodegenerations, notably Lewy body disease, AD, frontotemporal lobar degeneration, and motor neuron disease.

    “CTE is associated with the development of other neurode-generations, notably Lewy body disease (LBD), AD, fron-totemporal lobar degeneration (FTLD), and motor neuron disease (MND) [127, 128].”

    From The neuropathology of sport (2014) · cites this paper as [127]

  • CTE has been diagnosed neuropathologically in American football players, professional and amateur boxers, ice hockey players, professional wrestlers, soccer players, rugby players, and a professional baseball player.

    “Although CTE was first identified in association with boxing, CTE has been diagnosed neuropathologically in American football players, professional and amateur boxers, ice hockey players, professional wrestlers, soccer players, rugby players, and a professional baseball player (Figs. 3, 4, 5, 6) [38, 65, 66, 88, 91, 127, 128, 146–148].”

    From The neuropathology of sport (2014) · cites this paper as [127]

  • Either repetitive trauma or the accumulation of tau pathology in CTE provokes the deposition of other abnormal proteins involved in neurodegeneration.

    “In our current experience of 103 neuropathologically confirmed cases of CTE, co-existent LBD was found in 12 (12 %) cases, MND in 13 (13 %), AD in 15 (15 %), and FTLD in 6 (6 %), suggesting that either repetitive trauma or the accumulation of tau pathology in CTE provokes the deposition of other abnormal proteins involved in neurodegeneration [127, 128].”

    From The neuropathology of sport (2014) · cites this paper as [127]

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Authors
McKee, A. C., Gavett, B. E., Stern, R. A., Nowinski, C. J., Cantu, R. C., Kowall, N. W., Perl, D. P., Hedley-Whyte, E. T., Price, B., Sullivan, C., Morin, P., Lee, H.-S., Kubilus, C. A., Daneshvar, D. H., Wulff, M., & Budson, A. E.
Affiliations
Boston University (US)
Corresponding author
McKee, Ann C.
Venue
Journal of Neuropathology & Experimental Neurology
Published
2010-09
Volume
69
Issue
9
Pages
918-929
ISSN
  • 0022-3069 (ISSN-L)
  • 1554-6578
OpenAlex
W2077024919
Cited by
659
References
75
Citations by year
2026: 13 · 2025: 25 · 2024: 26 · 2023: 30 · 2022: 36 · 2021: 43 · 2020: 27 · 2019: 50 · 2018: 36 · 2017: 44 · 2016: 44 · 2015: 67 · 2014: 48 · 2013: 73 · 2012: 47
FWCI
32.26
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuropathology & Experimental Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
Funders
  • U.S. Department of Veterans Affairs (AG13846, P30 AG13846, CSP501)
  • National Operating Committee on Standards for Athletic Equipment
  • National Institute on Aging (P50 AG 05138, AG 13846, P01 AG 02219, P50AG005138, 0572063345–5, 0572063345, P50 AG05134, supplement 0572063345, P30AG013846, P50AG005134, P01AG002219, P30-AG13846))
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
chronic traumatic encephalopathy, TDP-43 proteinopathy, motor neuron disease, repetitive head injury, tauopathy, neurofibrillary tangles, frontotemporal lobar degeneration, corticospinal tract degeneration, collision sports, athletes, amyotrophic lateral sclerosis
MeSH terms
Adult, Aged, Aged, 80 and over, Athletic Injuries, Brain, DNA-Binding Proteins, Humans, Middle Aged, Motor Neuron Disease, Brain Injury, Chronic, Athletes, TDP-43 Proteinopathies

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