Cited by 52Traumatic Brain Injury and Neurovascular DisturbancesTraumatic Brain Injury ResearchRedox biology and oxidative stress

Deletion of NADPH oxidase 4 reduces severity of traumatic brain injury

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Ma, Merry W., Wang, Jing, Dhandapani, Krishnan M., Brann, Darrell W.·2018·Free Radical Biology and Medicine

Abstract

Traumatic brain injury (TBI) contributes to over 30% of injury-related deaths and is a major cause of disability without effective clinical therapies. Oxidative stress contributes to neurodegeneration, neuroinflammation, and neuronal death to amplify the primary injury after TBI. NADPH oxidase (NOX) is a major source of reactive oxygen species following brain injury. Our current study addresses the functional role of the NOX4 isoform in the damaged cortex following TBI. Adult male C57BL/6 J and NOX4 -/- mice received a controlled cortical impact and lesion size, NOX4 expression, oxidative stress, neurodegeneration, and cell death were assessed in the injured cerebral cortex. The results revealed that NOX4 mRNA and protein expression were significantly upregulated at 1–7 days post-TBI in the injured cerebral cortex. Expression of the oxidative stress markers, 8-OHdG, 4-HNE, and nitrotyrosine was upregulated at 2 and 4 days post-TBI in the WT injured cerebral cortex, and nitrotyrosine primarily colocalized with neurons. In the NOX4 -/- mice, expression of these oxidative stress markers, 8-OHdG, 4-HNE, and nitrotyrosine were significantly attenuated at both timepoints. In addition, examination of NOX4 -/- mice revealed a reduced number of apoptotic (TUNEL + ) and degenerating (FJB + ) cells in the perilesional cortex after TBI, as well as a smaller lesion size compared with the WT group. The results of this study implicate a functional role for NOX4 in TBI induced oxidative damage and neurodegeneration and raise the possibility that targeting NOX4 may have therapeutic efficacy in TBI.

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Authors
Ma, M. W., Wang, J., Dhandapani, K. M., & Brann, D. W.
Affiliations
Augusta University (US)
Corresponding author
Brann, Darrell W.
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2018-03
Volume
117
Pages
66-75
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2794115153
Cited by
52
References
81
Citations by year
2026: 7 · 2025: 5 · 2024: 9 · 2023: 4 · 2022: 3 · 2021: 6 · 2020: 10 · 2019: 4 · 2018: 4
FWCI
4.07
Type
journal article
Language
en
Open access
Locations
  • Free Radical Biology and Medicine (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
United States Department of Veteran's Affairs (5l101BX001117)
Topics
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
traumatic brain injury, NOX4, oxidative stress, reactive oxygen species, neurodegeneration, neuronal apoptosis, nitrotyrosine, 8-hydroxy-2'-deoxyguanosine, 4-hydroxynonenal, cerebral cortex, controlled cortical impact, lesion size, neuroinflammation
MeSH terms
Brain Injuries, Traumatic, NADPH Oxidase 4, Animals, Male, Mice, Inbred C57BL, Nerve Degeneration, Neurons, Mice, Knockout, Oxidative Stress, Mice

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