Advances of researches on peripheral PKCε pathway during transformation from acute to chronic pain and possibility of application of electroacupuncture intervention
10.13702/j.1000-0607.180542
- Author:
Hai-Ju SUN
1
Author Information
1. Third Clinical Medical College, Zhejiang Chinese Medical University
- Publication Type:Journal Article
- Keywords:
Electroacupuncture;
Hyperalgesic priming;
Protein kinase Cε;
Transition from acute to chronic pain
- From:
Acupuncture Research
2019;44(7):543-547
- CountryChina
- Language:Chinese
-
Abstract:
Protein kinase Cε (PKCε) is a transforming oncogene and plays an important role in many cellular processing. In the present paper, we review the development of experimental researches on the acute-chronic pain transformation. Results indicated that prostaglandin E2 (PGE2) / EP1 receptor-Gq-PKCε is an important signaling pathway to modulate chronic pain in peripheral dorsal root ganglion (DRG) neurons, and also plays a role in the later stage of hyperalgesia during transformation from acute to chronic pain. PKCε in DRG neurons induces mechanical and thermal hypersensitivity respectively by over expression of transient receptor potential vanilloid 1 (TRPV1) and TRP ankyrin-1 (TRPA1), further mediating the transformation from acute to chronic pain. Whereas, PGE2-evoked activation of EP1-Gq-PKCε signaling may be the key link in initiating the pain translation process through regulating downstream TRPA1 and TRPV1. Electroacupuncture (EA) has been used to effectively relieving various types of acute and chronic pain for decades, and can significantly inhibit the expression of PKCε and its upstream and downstream molecules. Therefore, it can be inferred that there exists a possibility of EA interventions in interfering the transformation from acute to chronic pain by regulating peripheral PKCε signaling pathway.
