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Related Concept Videos

Traumatic Memory01:20

Traumatic Memory

677
Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
677

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Preconditioning Effect of Hydrogen Gas on Traumatic Brain Injury.

Masaya Nakagawa1, Satoshi Tomura2, Terushige Toyooka1

  • 1Department of Neurosurgery, National Defense Medical College, Tokorozawa, Japan.

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|March 25, 2026
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Summary

Hydrogen gas preconditioning reduced oxidative stress and brain injury following exercise-induced traumatic brain injury (TBI). This antioxidant approach may offer a non-invasive preventive strategy for sports-related TBI.

Keywords:
brain edemacerebral edemahydrogenoxidative stresspreconditioningtraumatic brain injury

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Area of Science:

  • Neuroscience
  • Biochemistry
  • Sports Medicine

Background:

  • Traumatic brain injury (TBI) affects 1% of the global population annually, with sports-related injuries being common.
  • Exercise can exacerbate TBI severity due to increased oxidative stress, but effective preventive treatments are lacking.
  • Hydrogen gas has demonstrated antioxidant properties and potential therapeutic benefits in TBI models.

Purpose of the Study:

  • To investigate the effect of hydrogen gas preconditioning on oxidative stress and secondary brain injury following exercise-induced TBI.
  • To evaluate hydrogen's ability to attenuate exercise-induced oxidative stress and subsequent TBI in a mouse model.

Main Methods:

  • Mice were subjected to treadmill exercise to induce oxidative stress, followed by controlled cortical impact (CCI) to model TBI.
  • Groups included resting controls, exercise alone, exercise with TBI (ExCCI), and hydrogen-preconditioned exercise with TBI.
  • Oxidative stress markers (MDA), antioxidant capacity (MnSOD), brain edema, and histological changes (GFAP, AQP4) were assessed.

Main Results:

  • Exercise significantly increased oxidative stress (MDA levels) post-TBI.
  • Hydrogen preconditioning markedly reduced MDA levels and enhanced MnSOD activity.
  • Hydrogen administration attenuated brain edema, vasogenic edema, and neuroinflammation markers (GFAP, AQP4) in ExCCI mice.

Conclusions:

  • Hydrogen gas preconditioning effectively mitigates exercise-induced oxidative stress and secondary brain injury.
  • Hydrogen's antioxidant effects appear to protect the blood-brain barrier and reduce edema.
  • Hydrogen gas shows promise as a non-invasive preventive intervention for TBI, particularly in sports contexts.