A common neural signature of brain injury in concussion and subconcussion

Adnan A. Hirad, Jeffrey J. Bazarian, Kian Merchant-Borna, Frank E. Garcea, Sarah Heilbronner, David Paul, Eric B. Hintz, Edwin van Wijngaarden, Giovanni Schifitto, David W. Wright, Tamara R. Espinoza, Bradford Z. Mahon

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

The midbrain is biomechanically susceptible to force loading from repetitive subconcussive head impacts (RSHI), is a site of tauopathy in chronic traumatic encephalopathy (CTE), and regulates functions (e.g., eye movements) often disrupted in concussion. In a prospective longitudinal design, we demonstrate there are reductions in midbrain white matter integrity due to a single season of collegiate football, and that the amount of reduction in midbrain white matter integrity is related to the amount of rotational acceleration to which players’ brains are exposed. We then replicate the observation of reduced midbrain white matter integrity in a retrospective cohort of individuals with frank concussion, and further show that variance in white matter integrity is correlated with levels of serum-based tau, a marker of blood-brain barrier disruption. These findings mean that noninvasive structural MRI of the midbrain is a succinct index of both clinically silent white matter injury as well as frank concussion.

Original languageEnglish (US)
Article numbereaau3460
JournalScience advances
Volume5
Issue number8
DOIs
StatePublished - Aug 7 2019

PubMed: MeSH publication types

  • Journal Article
  • Research Support, N.I.H., Extramural
  • Research Support, N.I.H., Intramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

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  • Cite this

    Hirad, A. A., Bazarian, J. J., Merchant-Borna, K., Garcea, F. E., Heilbronner, S., Paul, D., Hintz, E. B., van Wijngaarden, E., Schifitto, G., Wright, D. W., Espinoza, T. R., & Mahon, B. Z. (2019). A common neural signature of brain injury in concussion and subconcussion. Science advances, 5(8), [eaau3460]. https://doi.org/10.1126/sciadv.aau3460