Cited by 699Traumatic Brain Injury ResearchTraumatic Brain Injury and Neurovascular DisturbancesAutomotive and Human Injury Biomechanics

Chronic neuropathologies of single and repetitive TBI: substrates of dementia?

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Smith, Douglas H., Johnson, Victoria E., Stewart, William·2013·Nature Reviews Neurology

Abstract

Traumatic brain injury (TBI) has long been recognized to be a risk factor for dementia. This association has, however, only recently gained widespread attention through the increased awareness of 'chronic traumatic encephalopathy' (CTE) in athletes exposed to repetitive head injury. Originally termed 'dementia pugilistica' and linked to a career in boxing, descriptions of the neuropathological features of CTE include brain atrophy, cavum septum pellucidum, and amyloid-β, tau and TDP-43 pathologies, many of which might contribute to clinical syndromes of cognitive impairment. Similar chronic pathologies are also commonly found years after just a single moderate to severe TBI. However, little consensus currently exists on specific features of these post-TBI syndromes that might permit their confident clinical and/or pathological diagnosis. Moreover, the mechanisms contributing to neurodegeneration following TBI largely remain unknown. Here, we review the current literature and controversies in the study of chronic neuropathological changes after TBI.

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Crossref · 10.1038/nrneurol.2013.29

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  • Individuals with a history of TBI are at higher risk for dementia, neurodegenerative diseases, psychiatric illness, and mortality, indicating long-term progression of sub-clinical pathology that manifests in late adulthood.

    “Furthermore, individuals with a history of TBI are at higher risk for dementia, neurodegenerative diseases, psychiatric illness, and even mortality, indicating long-term progression of sub-clinical pathology that manifests only in late adulthood (Smith et al., 2013;Wilson et al., 2017).”

    From NODDI in clinical research (2020) · cites this paper as Smith et al., 2013

    The Introduction and “Single TBI” section support increased risk of later dementia and neurodegenerative disease, particularly after moderate to severe TBI. “Repetitive mild TBI” reports neuropsychiatric symptoms in selected cases and higher neurodegenerative mortality in former NFL players, but does not establish a general increased risk of psychiatric illness or mortality for everyone with a TBI history. The “Histological features” section also describes pathology appearing within hours of injury, so the claim that it manifests only in late adulthood is not supported. (LLM, conf=0.87)

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  • Life events associated with psychological stress and injury can lead to accelerated aging-associated impairments and dementia.

    “Conversely, life events associated with psychological stress and injury can also lead to accelerated aging-associated impairments and dementia (Epel et al, 2004;Smith et al, 2013).”

    From Microglia Priming with Aging and Stress (2017) · cites this paper as Smith et al, 2013

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Research works printed but not linked: 1

  1. [95]Adams JH Diffuse axonal injury in head injury: definition, diagnosis and grading Histopathology 15 49 59 1989 2767623

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Authors
Smith, D. H., Johnson, V. E., & Stewart, W.
Affiliations
University of Pennsylvania (US)
Venue
Nature Reviews Neurology
Published
2013-03-05
Volume
9
Issue
4
Pages
211-221
ISSN
  • 1759-4758 (ISSN-L)
  • 1759-4766
OpenAlex
W2161569931
Cited by
699
References
129
Citations by year
2026: 23 · 2025: 39 · 2024: 53 · 2023: 53 · 2022: 46 · 2021: 58 · 2020: 73 · 2019: 62 · 2018: 46 · 2017: 58 · 2016: 59 · 2015: 71 · 2014: 43 · 2013: 12
FWCI
7.31
Type
journal article
Language
en
Open access
Locations
  • Nature Reviews Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (AG038911, R03AG038911)
  • National Institute of Neurological Disorders and Stroke (NS-038104, R01NS038104, P01NS056202, NS 056202)
Topics
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Automotive and Human Injury Biomechanics
Keywords
chronic traumatic encephalopathy, traumatic brain injury, dementia, repetitive head injury, athletes, neuropathology, amyloid-beta, tau pathology, TDP-43, brain atrophy, cavum septum pellucidum, cognitive impairment, neurodegeneration, boxing
MeSH terms
Aged, Athletic Injuries, Brain, Brain Injuries, Chronic Disease, Dementia, Humans, Male, Risk Factors, Neurofibrillary Tangles, Disease Progression, Young Adult

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