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Updated: May 28, 2026
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A Neonatal Mouse Spinal Cord Compression Injury Model
Published on: March 27, 2016
Chronic spinal compression model in minipigs: a systematic behavioral, qualitative, and quantitative
Roman Navarro1, Stefan Juhas, Sassan Keshavarzi
1Neuroregeneration Laboratory, Department of Anesthesiology, University of California, San Diego (UCSD), San Diego, California, USA.
Journal of Neurotrauma
|October 28, 2011
Summary
This study developed a porcine spinal cord injury (SCI) model. Higher compression forces caused severe, stable neurological deficits, validating the model for SCI therapeutics research.
Area of Science:
- Neuroscience
- Regenerative Medicine
- Animal Models
Background:
- Developing reliable animal models is crucial for understanding spinal cord injury (SCI) pathophysiology.
- Assessing neurological outcomes and histological changes is key to evaluating SCI severity and potential treatments.
Purpose of the Study:
- To establish a reproducible porcine spinal cord injury (SCI) model.
- To characterize neurological deficits and histological alterations at 4-9 months post-injury.
- To evaluate the model's suitability for preclinical SCI research.
Main Methods:
- Adult Gottingen-Minnesota minipigs underwent T12 spinal cord compression (1.5, 2.0, or 2.5 kg force).
- Neurological function (motor and sensory) was monitored post-injury.
- Histological analysis included MRI, axonal survival, inflammation, astrocytosis, and schwannosis assessments.
Main Results:
- 2.5 kg compression resulted in near-complete, stable motor/sensory loss.
- 2 kg compression led to incomplete injury with partial recovery.
- 1.5 kg compression caused minimal, transient deficits.
- MRI revealed white matter loss and cavitation in severely injured animals.
- Axonal loss in the ventral funiculus correlated significantly with neurological deficits.
Conclusions:
- The developed porcine SCI model demonstrates dose-dependent neurological deficits and characteristic histopathology.
- The model exhibits stable deficits and pathological similarities to human SCI.
- This model is suitable for investigating therapeutic interventions in both acute and chronic SCI stages.
