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Related Concept Videos

Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...

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Related Experiment Video

Updated: Jun 27, 2026

Regulating Schwann Cell Growth by Nanosecond Pulsed Electric Field for Peripheral Nerve Regeneration In Vitro
09:24

Regulating Schwann Cell Growth by Nanosecond Pulsed Electric Field for Peripheral Nerve Regeneration In Vitro

Published on: May 3, 2024

Augmenting nerve regeneration with electrical stimulation.

T Gordon1, T M Brushart, K M Chan

  • 1Division of Physical Medicine and Rehabilitation/Centre for Neuroscience, Faculty of Medicine, University of Alberta, Edmonton, Alta T6G 2S2, Canada.

Neurological Research
|December 17, 2008
PubMed
Summary
This summary is machine-generated.

Electrical stimulation (ES) aids axon regeneration after nerve injury by improving neuronal growth and Schwann cell support, not target re-innervation. This approach accelerates nerve repair and muscle reinnervation in both animal models and carpal tunnel syndrome patients.

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Area of Science:

  • Neuroscience
  • Regenerative Medicine
  • Peripheral Nerve Injury

Background:

  • Poor functional recovery after peripheral nerve injury is often linked to irreversible target atrophy.
  • Schwann cell (SC) atrophy in distal nerve stumps also impairs regeneration.
  • Understanding these factors is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the functional outcomes of prolonged neuronal separation and SC atrophy on axon regeneration in rats.
  • To determine if electrical stimulation (ES) accelerates axon regeneration and functional recovery.
  • To assess ES's effect on muscle reinnervation in carpal tunnel syndrome (CTS) patients.

Main Methods:

  • Rats underwent chronic axotomy or SC denervation, followed by nerve repair with or without ES.
  • Regenerating neuron and motor unit (MU) numbers were quantified using electrophysiology and dye-labeling.
  • CTS patients received nerve release surgery with or without ES, with reinnervation assessed electrophysiologically.

Main Results:

  • Chronic axotomy reduced regenerative capacity, which was partially restored by growth factors.
  • SC atrophy significantly decreased regeneration, but SC reactivation therapies (forskolin, TGF-β) improved outcomes.
  • ES accelerated axon outgrowth and promoted full muscle reinnervation in CTS patients.

Conclusions:

  • Progressive deterioration of neuronal growth capacity and SC support, not target atrophy, limits functional recovery after nerve injury.
  • Brief ES significantly enhances axon regeneration and muscle reinnervation in both animal models and human patients.
  • ES shows promise for clinical application to improve functional recovery following peripheral nerve injuries.