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Downregulation of Spinal G Protein-Coupled Kinase 2 Abolished the Antiallodynic Effect of Electroacupuncture.

Authors: Liu, Huan  Liu, Shen-Bin  Li, Qian  Wang, Huijing  Wang, Yan-Qing  Mao-Ying, Qi-Liang 
Citation: Liu H, etal., Evid Based Complement Alternat Med. 2015;2015:848603. doi: 10.1155/2015/848603. Epub 2015 Apr 29.
Pubmed: (View Article at PubMed) PMID:26064176
DOI: Full-text: DOI:10.1155/2015/848603

Acupuncture or electroacupuncture (EA) has been demonstrated to have a powerful antihypernociceptive effect on inflammatory pain. The attenuation of G protein-coupled receptor kinase 2 (GRK2) in spinal cord and peripheral nociceptor has been widely acknowledged to promote the transition from acute to chronic pain and to facilitate the nociceptive progress. This study was designed to investigate the possible role of spinal GRK2 in EA antiallodynic in a rat model with complete Freund's adjuvant (CFA) induced inflammatory pain. EA was applied to ST36 ("Zusanli") and BL60 ("Kunlun") one day after CFA injection. Single EA treatment at day 1 after CFA injection remarkably alleviated CFA induced mechanical allodynia two hours after EA. Repeated EA displayed significant antiallodynic effect from 2nd EA treatment and a persistent effect was observed during the rest of treatments. However, downregulation of spinal GRK2 by intrathecal exposure of GRK2 antisense 30┬┐mins after EA treatment completely eliminated both the transient and persistent antiallodynic effect by EA treatment. These pieces of data demonstrated that the spinal GRK2 played an important role in EA antiallodynia on inflammatory pain.


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RGD Object Information
RGD ID: 13514046
Created: 2018-03-22
Species: All species
Last Modified: 2018-03-22
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.