Related Experiment Video
Updated: Nov 20, 2025
08:20
Author Spotlight: Unveiling the Therapeutic Effects of FSN Treatment – Bridging Research and Clinical Applications in Neuropathic Pain
Published on: June 30, 2023
2.4K
Electroacupuncture Attenuates CFA-Induced Inflammatory Pain by Regulating CaMKII
Yixiao Gu1,2, Shuangdong Chen1, Yunchang Mo1
1Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035 Zhejiang, China.
Neural Plasticity
|January 25, 2021
Summary
Electroacupuncture (EA) alleviates inflammatory pain by inhibiting CaMKII-GluA1 phosphorylation in the anterior cingulate cortex (ACC). This involves the pCaMKII-PICK1 complex, offering new insights into EA analgesia mechanisms.
Area of Science:
- Neuroscience
- Pain Research
- Pharmacology
Background:
- Ca2+/calmodulin-dependent protein kinase II (CaMKII) and its phosphorylated form (P-CaMKII) are crucial for nervous system functions, including pain regulation in the anterior cingulate cortex (ACC).
- Electroacupuncture (EA) is a validated therapy for chronic inflammatory pain, but its precise molecular mechanisms, particularly involving CaMKII and GluA1 in the ACC, are not fully understood.
Purpose of the Study:
- To investigate the role of phosphorylated CaMKII (P-CaMKII) and phosphorylated GluA1 (P-GluA1) in EA analgesia for inflammatory pain.
- To elucidate the involvement of the CaMKII-GluA1 pathway and the pCaMKII-PICK1 complex in the analgesic effects of EA in the ACC.
Main Methods:
- Induction of inflammatory pain in a mouse model using complete Freund's adjuvant (CFA).
- Administration of KN93 (a CaMKII inhibitor) via intracerebroventricular injection.
- Application of EA stimulation to mice.
- Measurement of P-CaMKII and P-GluA1 levels in the ACC.
- Assessment of pCaMKII-PICK1 complex levels.
Main Results:
- Complete Freund's adjuvant (CFA) administration led to elevated levels of P-CaMKII and P-GluA1 in the ACC.
- Intracerebroventricular injection of KN93 and EA stimulation both significantly reduced CFA-induced pain behaviors.
- EA stimulation was found to increase the levels of the pCaMKII-PICK1 complex in the ACC.
Conclusions:
- EA effectively inhibits inflammatory pain, at least partly, by suppressing CaMKII-GluA1 phosphorylation in the ACC.
- P-CaMKII, particularly within the pCaMKII-PICK1 complex, plays a significant role in mediating the analgesic effects of EA.
