PMID- 33173987 OWN - NLM STAT- MEDLINE DCOM- 20210525 LR - 20221207 IS - 1791-3004 (Electronic) IS - 1791-2997 (Print) IS - 1791-2997 (Linking) VI - 22 IP - 6 DP - 2020 Dec TI - Effects of nicorandil on p120 expression in the spinal cord and dorsal root ganglion of rats with chronic postsurgical pain. PG - 4821-4827 LID - 10.3892/mmr.2020.11546 [doi] AB - Chronic postsurgical pain (CPSP) has a high incidence, but the underlying mechanism is not well understood. Accumulating evidence has suggested that central sensitization is the main mechanism of pain. To study the role of p120 in CPSP, a skin/muscle incision and retraction (SMIR) model was established, and immunofluorescence staining and western blotting were performed to analyze the expression of p120 in the spinal cord and dorsal root ganglion (DRG). The results demonstrated that SMIR increased the expression of p120 in the DRG and the spinal cord compared with the naive group. Furthermore, it was demonstrated that p120 was mainly distributed in the glial fibrillary acidic protein‑positive astrocytes in the spinal cord, and in the neurofilament 200‑positive medium and large neurons in the DRG. Our previous studies have shown that adenosine triphosphate‑sensitive potassium channel (KATP) agonists can reduce postoperative pain in rats. Therefore, the changes in p120 were observed in the DRG and spinal cord of rats following the intraperitoneal injection of nicorandil, a KATP agonist. It was demonstrated that nicorandil administration could relieve mechanical pain experienced following SMIR in rats, and decrease the expression of p120 in the DRG and spinal cord. The results revealed that p120 may contribute to the prophylactic analgesic effect of nicorandil, thus providing a novel insight into the mechanism of CPSP prevention. FAU - Huang, Sai-Sai AU - Huang SS AD - Department of Anesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, P.R. China. FAU - Cao, Su AU - Cao S AD - Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China. FAU - Lu, Cui E AU - Lu CE AD - Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China. FAU - Qin, Yi-Bin AU - Qin YB AD - Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China. FAU - Yang, Jian-Ping AU - Yang JP AD - Department of Anesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, P.R. China. LA - eng PT - Journal Article DEP - 20200928 PL - Greece TA - Mol Med Rep JT - Molecular medicine reports JID - 101475259 RN - 0 (Catenins) RN - 0 (Glial Fibrillary Acidic Protein) RN - 260456HAM0 (Nicorandil) RN - 0 (Delta Catenin) SB - IM MH - Animals MH - Astrocytes/metabolism MH - Catenins/*metabolism MH - Chronic Pain/*drug therapy/metabolism MH - Ganglia, Spinal/drug effects/metabolism MH - Glial Fibrillary Acidic Protein/metabolism MH - Hyperalgesia/drug therapy/metabolism MH - Male MH - Nicorandil/*pharmacology/therapeutic use MH - Pain Measurement MH - Pain, Postoperative/*drug therapy/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Spinal Cord/*drug effects/metabolism MH - Delta Catenin PMC - PMC7646919 EDAT- 2020/11/12 06:00 MHDA- 2021/05/26 06:00 PMCR- 2020/09/28 CRDT- 2020/11/11 06:00 PHST- 2020/02/20 00:00 [received] PHST- 2020/08/21 00:00 [accepted] PHST- 2020/11/12 06:00 [pubmed] PHST- 2021/05/26 06:00 [medline] PHST- 2020/11/11 06:00 [entrez] PHST- 2020/09/28 00:00 [pmc-release] AID - mmr-22-06-4821 [pii] AID - 10.3892/mmr.2020.11546 [doi] PST - ppublish SO - Mol Med Rep. 2020 Dec;22(6):4821-4827. doi: 10.3892/mmr.2020.11546. Epub 2020 Sep 28.