Explore the cutting-edge intersection of chemogenetics and electroacupuncture in alleviating neuropathic pain, a promising advance revealing the role of the TRPV1 signaling pathway in pain management.
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Chemogenetics Modulation of Electroacupuncture Analgesia in Mice Spared Nerve Injury-Induced Neuropathic Pain through TRPV1 Signaling Pathway.
Hsiao et al., Int J Mol Sci 2024
<!– DOI: 10.3390/ijms25031771 //–>
https://doi.org/10.3390/ijms25031771
Summary of Findings:
The study investigates the therapeutic effects of electroacupuncture (EA) on neuropathic pain in mice and explores the involvement of the transient receptor potential V1 (TRPV1) signaling pathway and inflammation. The research utilized a spared nerve injury (SNI) model in mice to induce neuropathic pain, which resulted in both mechanical and thermal hyperalgesia. Treatment with 2 Hz EA partially alleviated mechanical hyperalgesia and fully reduced thermal hyperalgesia, unlike sham EA which had no significant effect. Mice with TRPV1 deletion exhibited partial mechanical hyperalgesia and no thermal hyperalgesia, indicating the role of TRPV1 in neuropathic pain.
Furthermore, the study observed increased levels of inflammatory factors post-SNI, which were reduced by EA and in TRPV1 knockout mice. Analyses of the dorsal root ganglion, spinal cord dorsal horn, somatosensory cortex (SSC), and anterior cingulate cortex (ACC) supported these findings. A novel chemogenetics approach was employed to inhibit SSC to ACC activity, demonstrating analgesic effects through the TRPV1 pathway.
Significance:
This research is significant as it elucidates a novel mechanism for neuropathic pain relief through EA, highlighting the anti-inflammatory effects and the critical role of TRPV1 signaling. The findings contribute to the understanding of neuropathic pain and offer a potential therapeutic target for treatment.