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Detecting Behavioral Deficits in Rats After Traumatic Brain Injury
07:54

Detecting Behavioral Deficits in Rats After Traumatic Brain Injury

Published on: January 30, 2018

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EPO improved neurologic outcome in rat pups late after traumatic brain injury

Michelle E Schober1, Daniela F Requena1, Christopher K Rodesch2

  • 1Department of Pediatrics, Division of Critical Care, University of Utah, Salt Lake City, UT 84132, United States.

Brain & Development
|February 13, 2018
PubMed

Insights

Erythropoietin treatment improved long-term object recognition in young rats after traumatic brain injury. This cognitive improvement was linked to preserved hippocampal volume, not neuronal count, suggesting therapeutic potential.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Pharmacology

Background:

  • Traumatic brain injury (TBI) in developing brains poses significant long-term risks.
  • Erythropoietin (EPO) shows promise in treating TBI, with known effects on Brain-Derived Neurotrophic Factor (BDNF).
  • Long-term data on EPO's effects on developmental TBI, BDNF, histology, and cognition are limited.

Purpose of the Study:

  • To investigate the long-term effects of erythropoietin on cognitive function and brain structure after developmental TBI in rats.
  • To determine if EPO administration impacts Brain-Derived Neurotrophic Factor (BDNF) levels and hippocampal neuronal preservation.
  • To assess the correlation between EPO treatment, cognitive outcomes, and histological changes post-TBI.

Main Methods:

  • Controlled cortical impact model in 17-day-old rat pups to induce TBI.
  • Administration of erythropoietin or vehicle at multiple time points post-injury.
  • Histological analysis at 35 days, Novel Object Recognition testing in adulthood, and BDNF measurements.

Main Results:

  • Erythropoietin treatment significantly improved Novel Object Recognition performance in adulthood.
  • Histological analysis revealed preserved hippocampal volume in EPO-treated rats.
  • Neuronal fraction in the hippocampus was not significantly different between groups, despite improved cognition.

Conclusions:

  • Improved object recognition following erythropoietin treatment is associated with preserved hippocampal volume after developmental TBI.
  • These findings support further investigation into erythropoietin as a therapeutic agent for pediatric TBI.
  • EPO's potential benefits in neonatal hypoxic-ischemic injury suggest a broader role in developmental brain injury.

Keywords:
ApoptosisControlled cortical impactDevelopmentalErythropoietinNeurocognitive impairment

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