KCC2-GABAA pathway correlates with the analgesic effect of electro-acupuncture in CCI rats
| Autor: | Song He Jiang, Qi‑Miao Hu, Bin Lu, Guan‑Hu Yang, Si-Si Li, Wen Ci Chen, Xin‑Ru Qian, Xia Jiang, Wen Zhan Tu, Cheng‑Qian Jia |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Male Cancer Research Electroacupuncture medicine.medical_treatment KCC2 Down-Regulation Stimulation Pharmacology Biochemistry Rats Sprague-Dawley 03 medical and health sciences 0302 clinical medicine Genetics medicine Animals RNA Messenger Receptor Molecular Biology Spinal Cord Injuries chronic constriction injury Symporters Chemistry GABAA receptor Articles analgesic Receptors GABA-A electro-acupuncture Rats Up-Regulation 030104 developmental biology Oncology Spinal Cord Hyperalgesia Peripheral nerve injury Neuropathic pain Molecular Medicine Sciatic nerve medicine.symptom 030217 neurology & neurosurgery Signal Transduction |
| Zdroj: | Molecular Medicine Reports |
| ISSN: | 1791-3004 |
| Popis: | Potassium-chloride cotransporter 2 (KCC2) has been indicated to serve a crucial role during chronic neuropathic pain (NP). Following the emergence of NP, γ‑aminobutyric acid (GABA) A receptor‑mediated signaling may be further impaired by the changes of KCC2 chloride anion gradient. In the present study, the authors investigate the effect of electro-acupuncture (EA) on the behavior and the expression of KCC2 and GABAA receptor γ2 subunit in the spinal cord of chronic constriction injury (CCI) model rats. A total of 60 adult male Sprague‑Dawley rats were divided into four groups: Normal group, sham‑CCI group, CCI group and CCI+EA group. The effect of EA was assessed via the values of mechanical withdrawal threshold and thermal withdrawal latency, which were significantly improved upon stimulation of the ST‑36 and GB‑34 acupoints. In addition, a marked reduction in both the mRNA and protein levels of KCC2 and GABAA receptor γ2 subunit was observed in the spinal cord following loose ligation of the sciatic nerve. The reductions in KCC2 and GABAA receptor γ2 subunit expression were reversed by EA treatment. These results support the notion that KCC2 and GABAA receptor γ2 subunit contribute to NP following peripheral nerve injury and extend the understanding of the analgesic effects of EA on NP. |
| Databáze: | OpenAIRE |
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