Related Experiment Video
Updated: Jul 9, 2026
07:54
Accessing the Subdural Space of the Rodent Spinal Cord for Treatment Delivery
Published on: August 8, 2025
Targeted spinal cord therapeutics delivery: stabilized platform and microelectrode recording guidance validation
Jonathan Riley1, John Butler, Kenneth B Baker
1Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio, USA.
Stereotactic and Functional Neurosurgery
|December 13, 2007
Summary
Researchers developed a new platform for precise biological therapy delivery to the spinal cord ventral horn. While targeting was accurate, further modifications are needed to reduce complications and improve safety for future human applications.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Regenerative Medicine
Background:
- Accurate delivery of biological therapies to specific spinal cord targets remains a significant challenge.
- Existing techniques lack the precision and reproducibility required for clinical translation.
Purpose of the Study:
- To develop and evaluate a novel stabilized platform for targeted delivery of biological therapies to the spinal cord ventral horn.
- To assess the feasibility of combining physiologic mapping with cellular or viral payload delivery.
Main Methods:
- A porcine model (n=7) was used due to anatomical similarities with the human spine.
- The platform facilitated physiologic mapping via microelectrode recording and microinjection of a green-fluorescent-protein-labeled cell suspension.
- Animals were assessed behaviorally before sacrifice at 3 hours post-procedure.
Main Results:
- Histologic analysis confirmed successful localization to the ipsilateral ventral horn of the spinal cord.
- Complications included malignant hyperthermia (n=1), epidural hematoma causing hindlimb dysfunction (n=1), and cord penetration causing hindlimb dysfunction (n=2).
Conclusions:
- The study demonstrated accurate targeting capability for spinal cord therapy delivery.
- High rates of neurologic morbidity necessitate further research, including procedural modifications and longer follow-up periods.
- Translating restorative therapies from small to large animal models presents significant challenges that must be addressed before human application.
