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Related Experiment Video

Updated: Sep 28, 2025

A Mouse Model of Single and Repetitive Mild Traumatic Brain Injury
04:19

A Mouse Model of Single and Repetitive Mild Traumatic Brain Injury

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A novel simple traumatic brain injury mouse model.

Chen Chen1, Jiawei Hou2, Junfeng Lu1

  • 1School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China.

Chinese Neurosurgical Journal
|April 1, 2022
PubMed
Summary

A novel, simple traumatic brain injury (TBI) model using rubber bullets effectively simulates mild TBI in animals, causing neuronal damage and cognitive issues for further research.

Keywords:
Blood-brain barrierCognitive dysfunctionRubber bullet impact modelTau phosphorylationTraumatic brain injury

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Trauma Research

Background:

  • Traumatic brain injury (TBI) is a major cause of death and disability globally.
  • Existing TBI models are often complex, costly, and difficult to implement.
  • A simpler, more accessible TBI model is needed for research.

Purpose of the Study:

  • To develop a simple, reproducible animal model for mild traumatic brain injury (TBI).
  • To provide a tool for studying TBI pathobiology and screening therapies.

Main Methods:

  • A novel TBI model utilizing an air gun to launch rubber bullets at a fixed cranial site.
  • The impact device allows for focused force delivery, inducing mild closed head injury.
  • Damage severity can be modulated by adjusting the number of impacts.

Main Results:

  • The model successfully induced blood-brain barrier leakage and diffuse neuronal damage.
  • Elevated Tau phosphorylation levels and cognitive dysfunction were observed post-injury.
  • The model replicates key pathological features of mild TBI.

Conclusions:

  • This TBI model is simple, time-efficient, and mimics clinical mild brain injuries.
  • It is suitable for investigating TBI mechanisms and evaluating potential treatments.
  • Offers a practical alternative for TBI research.