Cited by 55Traumatic Brain Injury ResearchTraumatic Brain Injury and Neurovascular DisturbancesMitochondrial Function and Pathology

A Mild Traumatic Brain Injury in Mice Produces Lasting Deficits in Brain Metabolism

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Lyons, Danielle N., Vekaria, Hemendra, Macheda, Teresa, Bakshi, Vikas, Powell, David K., Gold, Brian T., Lin, Ai-Ling, Sullivan, Patrick G. +1 more·2018·Journal of Neurotrauma

Abstract

Metabolic uncoupling has been well-characterized during the first minutes-to-days after a traumatic brain injury (TBI), yet mitochondrial bioenergetics during the weeks-to-months after a brain injury is poorly defined, particularly after a mild TBI. We hypothesized that a closed head injury (CHI) would be associated with deficits in mitochondrial bioenergetics at one month after the injury. A significant decrease in state-III (adenosine triphosphate production) and state-V (complex-I) driven mitochondrial respiration was found at one month post-injury in adult C57Bl/6J mice. Isolation of synaptic mitochondria demonstrated that the deficit in state-III and state-V was primarily neuronal. Injured mice had a temporally consistent deficit in memory recall at one month post-injury. Using proton magnetic resonance spectroscopy ( 1 H MRS) at 7-Tesla, we found significant decreases in phosphocreatine, N-Acetylaspartic acid, and total choline. We also found regional variations in cerebral blood flow, including both hypo- and hyperperfusion, as measured by a pseudocontinuous arterial spin labeling MR sequence. Our results highlight a chronic deficit in mitochondrial bioenergetics associated with a CHI that may lead toward a novel approach for neurorestoration after a mild TBI. MRS provides a potential biomarker for assessing the efficacy of candidate treatments targeted at improving mitochondrial bioenergetics.

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  • Female mice showed greater deficits in bioenergetic markers such as phosphocreatine and N-acetylaspartate following mild TBI, compared with male mice.

    “female mice showed greater deficits in bioenergetic markers such as phosphocreatine and N -acetylaspartate following mild TBI, compared with male mice.”

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Authors
Lyons, D. N., Vekaria, H., Macheda, T., Bakshi, V., Powell, D. K., Gold, B. T., Lin, A.-L., Sullivan, P. G., & Bachstetter, A. D.
Affiliations
University of Kentucky (US)
Corresponding author
Bachstetter, Adam D.
Venue
Journal of Neurotrauma
Published
2018-10
Volume
35
Issue
20
Pages
2435-2447
ISSN
  • 0897-7151 (ISSN-L)
  • 1557-9042
OpenAlex
W2806143103
Cited by
55
References
60
Citations by year
2026: 8 · 2025: 6 · 2024: 9 · 2023: 4 · 2022: 6 · 2021: 5 · 2020: 8 · 2019: 7 · 2018: 2
FWCI
4.29
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurotrauma (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Veterans Affairs (I01 BX003405)
  • University of Kentucky
  • National Institutes of Health (GM110787)
  • National Institute on Aging (R00AG044445, R01AG054459)
  • National Institute of General Medical Sciences (P30GM110787)
Topics
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
mild traumatic brain injury, closed head injury, mitochondrial bioenergetics, metabolic uncoupling, synaptic mitochondria, ATP production, memory impairment, phosphocreatine, N-acetylaspartate, choline, cerebral blood flow, arterial spin labeling, 1H NMR, neurorestoration, biomarkers, mice
MeSH terms
Animals, Brain, Brain Concussion, Energy Metabolism, Mice, Inbred C57BL, Mitochondria, Mice

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