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Related Experiment Video

Updated: May 16, 2025

Direct Vagus Nerve Injection Protocol For Rats

Direct Vagus Nerve Injection Protocol For Rats

Published on: March 14, 2025

Direct Vagus Nerve Injection Protocol For Rats.

Nanda L Regmi¹, Xin Chen¹, Rachel M Bailey²

¹Department of Pediatrics, UT Southwestern Medical Center.

Journal of Visualized Experiments : Jove

|March 31, 2025

Summary

This summary is machine-generated.

Researchers developed a direct nerve injection technique for peripheral nervous system drug delivery. This microsurgical method, demonstrated on the vagus nerve in rats, enables precise delivery of therapeutics, including gene therapy, to nerves.

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Published on: May 11, 2020

Area of Science:

Neuroscience
Surgical Methodology
Pharmacology

Background:

Limited methods exist for direct drug delivery to the peripheral nervous system (PNS) compared to the central nervous system.
Effective PNS drug delivery is crucial for treating autonomic nervous system disorders.

Purpose of the Study:

To describe a detailed, reproducible microsurgical method for direct peripheral nerve injection.
To establish a reliable technique for delivering therapeutic agents to the vagus nerve in a preclinical rat model.

Main Methods:

A direct nerve injection procedure was developed and performed on the vagus nerve of anesthetized adult rats under a dissecting microscope.
Microsurgical techniques were employed, with a tracking dye used for real-time monitoring of injection accuracy.
The method details critical procedural steps and includes visual aids of successful and unsuccessful injections.

Main Results:

The direct vagus nerve injection method was successfully implemented in six out of six trained rats without post-delivery complications.
The procedure was demonstrated to be safe and well-tolerated by the animals.
Injection fidelity was monitored effectively using a tracking dye.

Conclusions:

Direct nerve injection is a viable and safe method for peripheral nervous system drug delivery in preclinical studies.
This technique, exemplified by vagus nerve injection, can be adapted for other peripheral nerves and for delivering various agents, including gene therapy.
The described method provides a valuable tool for researchers investigating PNS-targeted therapies.