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Related Experiment Video

Updated: Aug 7, 2025

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Abusive Head Trauma Animal Models: Focus on Biomarkers.

Rahul M Nikam1,2, Heidi H Kecskemethy1,2, Vinay V R Kandula2

  • 1Diagnostic & Research PET/MR Center, Nemours Children's Health, Wilmington, DE 19803, USA.

International Journal of Molecular Sciences
|March 11, 2023
PubMed
Summary

Abusive head trauma (AHT) is a leading cause of death in young children. Animal models offer insights into AHT

Keywords:
N-methyl-D-aspartate receptorabusive head traumaanimal modelbiomarkerglianeurodegenerationreactive oxygen

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Area of Science:

  • Neuroscience
  • Pediatric Traumatology
  • Animal Modeling

Background:

  • Abusive head trauma (AHT) is a critical cause of mortality in children under two.
  • Developing accurate animal models for AHT is complex due to species-specific brain structures and injury mechanisms.
  • Existing models, while varied, often lack rigorous characterization and reproducibility, limiting clinical translatability.

Purpose of the Study:

  • To review clinical diagnostic challenges and biomarkers for AHT.
  • To describe preclinical biomarkers of secondary brain injury in AHT.
  • To discuss the utility and limitations of animal models in AHT research and drug discovery.

Main Methods:

  • Review of clinical and preclinical literature on abusive head trauma.
  • Analysis of biomarkers associated with AHT in human cases and animal models.
  • Evaluation of the strengths and weaknesses of various animal models for AHT research.

Main Results:

  • Clinical diagnosis of AHT faces significant challenges, with various biomarkers identified.
  • Preclinical studies highlight key mediators of secondary brain injury, including neuroinflammation (microglia, astrocytes), oxidative stress (ROS), and excitotoxicity (NMDA receptors).
  • Animal models provide valuable data on biochemical pathways but have limitations in replicating human infant brain development and long-term injury impacts.

Conclusions:

  • Animal models are instrumental in understanding secondary injury mechanisms in AHT, despite inherent limitations.
  • Further refinement of models is needed to improve clinical translatability for AHT diagnosis and treatment development.
  • Investigating biomarkers in both clinical and preclinical settings is crucial for advancing AHT research.