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  4. Electroacupuncture alleviates neuropathic pain caused by spared nerve injury by promoting AMPK/mTOR-mediated autophagy in dorsal root ganglion macrophage

Electroacupuncture alleviates neuropathic pain caused by spared nerve injury by promoting AMPK/mTOR-mediated autophagy in dorsal root ganglion macrophage

Ann Transl Med, 2022 · DOI: 10.21037/atm-22-5920 · Published: December 1, 2022

Alternative MedicinePain ManagementGenetics

Simple Explanation

This study investigates how electroacupuncture (EA) can help with neuropathic pain (NP), which is pain caused by nerve damage. The researchers looked at a specific area called the dorsal root ganglion (DRG) and a process called autophagy, which is like a cellular cleaning system. The study found that EA seems to help reduce NP by promoting autophagy in specific immune cells (macrophages) within the DRG. This process involves a particular pathway called AMPK/mTOR. The findings suggest that targeting autophagy and using EA could be a new way to treat NP. It also helps us understand how the AMPK/mTOR pathway is involved in how EA reduces pain.

Study Duration
Not specified
Participants
Adult male Sprague-Dawley rats
Evidence Level
Not specified

Key Findings

  • 1
    SNI achieved a significant upregulation of autophagy levels in DRG macrophages.
  • 2
    EA attenuated NP, which may contribute to the promotion of AMPK/mTOR (mammalian target of rapamycin)-mediated autophagy in DRG macrophages.
  • 3
    EA treatment activates macrophage autophagy and alleviates NP via AMPK/mTOR pathway.

Research Summary

In ipsilateral L4-L6 DRGs, SNI-induced activation of macrophages was accompanied by reduced autophagy. EA alleviated SNI-induced NP and activated the autophagy process in DRG macrophages. These results indicate that EA treatment activates macrophage autophagy and alleviates NP via AMPK/mTOR pathway.

Practical Implications

New Therapeutic Target

The study provides a novel therapeutic target for NP by elaborating EA’s analgesic impact that is partly related to AMPK/mTOR pathway activation and autophagy induction in DRG macrophages.

Basis for Autophagy Pathway Targeting

This study provides a fundamental basis for targeting autophagy pathway and application of EA in NP therapy.

Insights for Pain Therapy

The research further elucidates the regulation and role of AMPK/mTOR signaling pathway in EA mediated analgesia, offering new sights and targets for pain therapy.

Study Limitations

  • 1
    Lack of gene knock-out experiment research on target genes.
  • 2
    Not specified
  • 3
    Not specified

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