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A Modified Method for Intrathecal Catheterization in Rats

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A rat spinal subarachnoid continuous infusion device.

E P Guazzo¹, R J Franklin, W F Blakemore

¹Department of Neurosurgery, University of Cambridge, Cambridge, UK; MRC Cambridge Centre for Brain Repair, University of Cambridge, Cambridge, UK.

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia

|October 1, 1995

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This study details a new method for continuously infusing substances into the rat spinal cord's subarachnoid space. This technique aids in studying spinal cord repair, both natural and graft-assisted.

Area of Science:

Neuroscience
Regenerative Medicine
Surgical Techniques

Background:

Investigating spinal cord repair requires methods to deliver therapeutic agents directly to the injury site.
Previous methods may lack the precision or duration needed for comprehensive repair studies.

Purpose of the Study:

To describe a reliable method for continuous infusion of substances into the rat spinal cord subarachnoid space.
To facilitate the study of spinal cord regeneration and repair processes.

Main Methods:

A novel technique using osmotic mini-pumps and fine-silicone catheters for continuous cerebrospinal fluid (CSF) infusion in rats.
Surgical procedures included laminectomy and durotomy for catheter insertion, with a fixation technique to ensure stability.
Method validation involved dye infusion, post-mortem analysis, and histological examination.

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Main Results:

The described method allows for sustained delivery of solutions into the rat spinal cord subarachnoid space.
The fixation technique effectively prevented catheter migration, disconnection, and kinking.
Validation studies confirmed the reliability and accuracy of the infusion system.

Conclusions:

This method provides a robust platform for investigating spinal cord repair in rats.
It enables continuous administration of potential repair-enhancing substances, crucial for studying regenerative strategies.
The technique is validated and reliable for preclinical spinal cord injury research.