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Effect of Mild Traumatic Brain Injury on Behavioral Reactions and Neocortical Morphology in Rats.

NG Plekhova | IV Radkov | SV Zinoviev | IV Dyuizen | AN Baryshev | VB Shumatov
Bulletin of experimental biology and medicine | 2021 Mar

The original weight-drop model was employed to examine the effect of mild traumatic brain injury (TBI) on behavioral phenotype and neocortical morphology in rats. The neurological examination of rats with moderate TBI revealed the focal symptoms corresponding to pronounced neurological disorders, whereas in rats after mild TBI, there were only minor coordination disorders. On day 7 after injury, the rats with mild TBI demonstrated enhanced anxiety assessed by conditioned passive avoidance response. The morphometric analysis of the brain tissues revealed narrowing of the capillaries and increased score of hyperchromic neocortical neurons, which attested to cerebral hypoxia. The manifestations of mild TBI in original rat model demonstrated a close similarity to the symptoms of TBI in humans.

Pubmed ID: 33788107

TBI Model

  • Weight-drop model
  • Animal Information

  • Species: rat
  • Strain: Wistar
  • Age (weeks): No age reported
  • Weight (grams): 200 - 250
  • Assessments

    modified Neurological Severity Score (mNSS), Neurological examination, Sensorimotor examination, Nissl staining, light/dark anxiety transition test, conditioned passive avoidance response, elevated plus-maze, histology, Hematoxylin and Eosin

    TBI model parameters

  • Impact Depth (mm): No information available
  • Impact Duration (ms): No information available
  • Impact Velocity (m/s): No information available
  • Impactor Tip: No information available
  • Device Name

    No information available

    Associated Datasets

    No information available

    Associated Protocols

    No information available