Peripheral Nerve Axons
Peripheral Nerve Axons - Related Videos
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Toluidine Blue Staining of Peripheral Nerve Sections: A Technique to Stain Myelinated Nerve Fibers For Peripheral Nerve Structure Visualization
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2025
This video demonstrates the staining technique of resin-embedded, osmium tetroxide-treated rat peripheral nerve sections using toluidine blue. The stained nerve sections help visualize the fine structures of peripheral nerves.
02:40
Axonal Regeneration in the Sciatic Nerve of a Mouse Following a Crush Injury
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2025
Source: Li, Q., et al. Investigating Mammalian Axon Regeneration: In Vivo Electroporation of Adult Mouse Dorsal Root Ganglion. J. Vis. Exp. (2018)This video demonstrates the process of axonal regeneration in a mouse sciatic nerve following a crush injury. The isolated nerve is fixed and prepared for imaging, with fluorescent proteins expressed in neurons to visualize axon growth. Using an epifluorescence microscope, axon regeneration is traced from the injury site to assess the extent of...
04:56
In Vivo Electrophysiological Measurement of the Rat Ulnar Nerve with Axonal Excitability Testing
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Cited by 3 •
2018
Axonal excitability techniques provide a powerful tool to examine pathophysiology and biophysical changes that precede irreversible degenerative events. This manuscript demonstrates the use of these techniques on the ulnar nerve of anesthetized rats.
02:00
Vagus Nerve Stimulation via Chronically Implanted Peripheral Nerve Cuff Electrodes in Rats
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2025
Source: Sanchez, C. A., et al. Preparation of Peripheral Nerve Stimulation Electrodes for Chronic Implantation in Rats. J. Vis. Exp. (2020).This video demonstrates vagus nerve stimulation in an awake rat. A rat with an implanted chronic peripheral nerve cuff electrode and trained in a lever press task is connected to a stimulus generator via an implanted head cap. The vagus nerve is stimulated immediately after each successful lever press, resulting in the expansion of the motor map.
20:14
Combining Peripheral Nerve Grafting and Matrix Modulation to Repair the Injured Rat Spinal Cord
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Cited by 21 •
2009
Traumatic injury to the spinal cord disrupts communication with the brain. To restore lost connectivity we utilize a peripheral nerve graft to provide a substratum for regenerating fibers in combination with neurotrophic factors and matrix-modulating enzymes to remove inhibitory molecules to promote long distance growth.
FAQs
Myelin produced by Schwann cells electrically insulates many peripheral nerve axons. This insulation changes how the membrane supports signal transmission, allowing action potentials to travel efficiently between exposed regions rather than along the entire axon surface. As a result, myelination enables rapid communication between the central nervous system and peripheral tissues.
Nodes of Ranvier are gaps between myelinated segments where action potentials are regenerated as they move along an axon. Conduction that proceeds from node to node is called saltatory conduction. This organization helps explain why myelinated peripheral nerve axons can transmit electrical signals rapidly, supporting timely sensory, motor, and autonomic communication.
Regrowth depends strongly on the local cellular environment created after damage. Schwann-cell responses can influence the conditions surrounding injured axons, while guidance across the damaged nerve helps direct further growth. Studying these factors clarifies why axonal degeneration and regeneration are linked to both cellular support and the physical path available for repair.
Peripheral nerve axon research connects electrical signaling with the cellular events that occur when axons are damaged or fail to function normally. Examining membrane-based action potentials, myelin, Schwann-cell behavior, and post-injury degeneration can help investigators analyze mechanisms underlying neuropathies and identify which parts of signaling or repair are affected.
Findings from peripheral nerve axon studies inform approaches aimed at restoring function after injury. In particular, understanding axonal degeneration, Schwann-cell responses, and guidance across damaged nerves provides biological context for designing nerve-repair strategies. This work also supports investigation of biomaterials and therapies intended to help reconnect injured pathways with peripheral tissues.
The relevant outcomes include sensation, movement, and autonomic control because peripheral nerve axons participate in communication supporting all three. Research is therefore judged not only by electrical signaling or axonal regrowth, but also by its potential relationship to restoring these functions after peripheral nerve damage or disease.