PMID- 29155323 OWN - NLM STAT- MEDLINE DCOM- 20190415 LR - 20190415 IS - 1090-2139 (Electronic) IS - 0889-1591 (Linking) VI - 69 DP - 2018 Mar TI - The role of P2X7R/ERK signaling in dorsal root ganglia satellite glial cells in the development of chronic postsurgical pain induced by skin/muscle incision and retraction (SMIR). PG - 180-189 LID - S0889-1591(17)30512-3 [pii] LID - 10.1016/j.bbi.2017.11.011 [doi] AB - The mechanisms of chronic postsurgical pain remain to be elucidated. We reported here that skin/muscle incision and retraction (SMIR), a rat model of postsurgical pain, phosphorylated the extracellular regulated protein kinases (ERK) signaling components c-Raf, MEK (ERK kinase) and ERK1/2 in lumbar 3 dorsal root ganglion (L3 DRG) in rats. Intrathecal injection of ERK specific inhibitor SCH772984 suppressed the mechanical allodynia induced by SMIR. Furthermore, SMIR upregulated tumor necrosis factor alpha (TNFalpha) in L3 DRG, which could be inhibited by SCH772984. Intrathecal injection of TNF antagonist Etanercept could also inhibit the mechanical allodynia and the increased ERK phosphorylation in L3 DRG induced by SMIR. In addition, immunofluorescent data showed that P2X7R was located exclusively in GFAP labeled satellite glial cells and was highly colocalized with p-ERK1/2 following SMIR. Pretreatment with P2X7R antagonist Brilliant Blue G (BBG) could also block the mechanical allodynia, inhibited the phosphorylation of c-Raf, MEK, ERK1/2, and decrease the expression of TNF-alpha. Finally, intrathecal injection of BzATP produced mechanical allodynia and induced ERK phosphorylation in satellite glial cells in L3 DRG. Thus, P2X7R activation in satellite glial cells in L3 DRG, leading to a positive feedback between ERK pathway activation and TNF-alpha production, is suggested to be involved in the induction of chronic postsurgical pain following SMIR. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Song, Jingnian AU - Song J AD - Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, 602 Renminbei Rd., Guangzhou 510180, China; Department of Anesthesiology, Hainan General Hospital, Xiuhua Rd., Haikou, Hainan 570311, China. FAU - Ying, Yanlu AU - Ying Y AD - Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, 602 Renminbei Rd., Guangzhou 510180, China. FAU - Wang, Wei AU - Wang W AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine Sun Yat-sen University, Guangzhou 510080, China. FAU - Liu, Xianguo AU - Liu X AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine Sun Yat-sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangzhou, Guangdong, China. FAU - Xu, Xuebing AU - Xu X AD - Department of Anesthesiology, The University of Hong Kong-Shenzhen Hospital, Haiyuan 1st Road, Futian District, Shenzhen 518053, China. Electronic address: xuxb@hku-szh.org. FAU - Wei, Xuhong AU - Wei X AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine Sun Yat-sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangzhou, Guangdong, China. Electronic address: weixhong@mail.sysu.edu.cn. FAU - Ruan, Xiangcai AU - Ruan X AD - Department of Anesthesiology, Guangzhou First People's Hospital, Guangzhou Medical University, 602 Renminbei Rd., Guangzhou 510180, China. Electronic address: xc_ruan@gzhmu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20171117 PL - Netherlands TA - Brain Behav Immun JT - Brain, behavior, and immunity JID - 8800478 RN - 0 (Enzyme Inhibitors) RN - 0 (Indazoles) RN - 0 (Piperazines) RN - 0 (Receptors, Purinergic P2X7) RN - 0 (Rosaniline Dyes) RN - 0 (SCH772984) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - M1ZRX790SI (coomassie Brilliant Blue) SB - IM MH - Animals MH - Enzyme Inhibitors/pharmacology MH - Extracellular Signal-Regulated MAP Kinases/*metabolism MH - Ganglia, Spinal/drug effects/*metabolism MH - Hyperalgesia/*metabolism MH - Indazoles/pharmacology MH - Male MH - Models, Animal MH - Pain Measurement MH - Pain, Postoperative/etiology/*metabolism MH - Phosphorylation/drug effects MH - Piperazines/pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Purinergic P2X7/*metabolism MH - Rosaniline Dyes/pharmacology MH - Satellite Cells, Perineuronal/drug effects/*metabolism MH - Signal Transduction/drug effects/*physiology MH - Surgical Wound/complications/metabolism OTO - NOTNLM OT - Chronic postsurgical pain OT - Dorsal root ganglia OT - Extracellular signal-regulated kinase OT - P2X7 receptor OT - Tumor necrosis factor alpha EDAT- 2017/11/21 06:00 MHDA- 2019/04/16 06:00 CRDT- 2017/11/21 06:00 PHST- 2017/07/19 00:00 [received] PHST- 2017/11/16 00:00 [revised] PHST- 2017/11/16 00:00 [accepted] PHST- 2017/11/21 06:00 [pubmed] PHST- 2019/04/16 06:00 [medline] PHST- 2017/11/21 06:00 [entrez] AID - S0889-1591(17)30512-3 [pii] AID - 10.1016/j.bbi.2017.11.011 [doi] PST - ppublish SO - Brain Behav Immun. 2018 Mar;69:180-189. doi: 10.1016/j.bbi.2017.11.011. Epub 2017 Nov 17.