PMID- 38530642 OWN - NLM STAT- Publisher LR - 20240326 IS - 2042-7158 (Electronic) IS - 0022-3573 (Linking) DP - 2024 Mar 26 TI - Ciprofol alleviates remifentanil-induced hyperalgesia by regulating alpha2GABAARs, NR2B, and P-CaMKIIalpha levels in the spinal cord and hippocampus. LID - rgae027 [pii] LID - 10.1093/jpp/rgae027 [doi] AB - OBJECTIVES: Several studies have shown that propofol administration during surgery effectively attenuates remifentanil-induced hyperalgesia (RIH). Ciprofol, a novel intravenous sedative agent analogous to propofol, has not yet been proven efficacious in alleviating RIH. The present study aimed to investigate the effect of ciprofol on RIH and the possible mechanisms involved. METHODS: The RIH model was established by an infusion of remifentanil (1 mug.kg-1.min-1) 60 min in rats with incisional pain. Ciprofol (0.1, 0.25, and 0.4 mg.kg-1.min-1) was simultaneously infused to evaluate its effect on RIH. The antinociception of ciprofol was verified by measured paw withdrawal mechanical threshold (PWMT) and paw withdrawal thermal latency (PWTL). gamma-aminobutyric acid type A receptor alpha2 subunit (alpha2GABAAR), N-methyl-d-aspartate receptor NR2B subunit (NR2B), calcium/calmodulin-dependent protein kinase II alpha (CaMKIIalpha), and phosphorylated CaMKIIalpha (P-CaMKIIalpha) in the spinal cord and hippocampus of rats were assessed by western blotting and immunohistochemistry. KEY FINDINGS: The results showed that ciprofol dose-dependently increased PWMT and PWTL values in RIH rats. Moreover, ciprofol upregulated alpha2GABAAR and downregulated NR2B and P-CaMKIIalpha in the rat spinal cord and hippocampus. CONCLUSIONS: Ciprofol alleviates RIH effectively, and the anti-hyperalgesic mechanisms may involve increasing alpha2GABAAR levels and decreasing NR2B and P-CaMKIIalpha levels in the spinal cord and hippocampus. CI - (c) The Author(s) 2024. Published by Oxford University Press on behalf of the Royal Pharmaceutical Society. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Yang, Yang AU - Yang Y AUID- ORCID: 0009-0003-2493-7551 AD - Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China. FAU - Yang, Chao AU - Yang C AUID- ORCID: 0009-0007-0064-0461 AD - Bengbu Medical University, Bengbu 233030, Anhui, China. FAU - Shi, Yujie AU - Shi Y AUID- ORCID: 0009-0000-6345-282X AD - Bengbu Medical University, Bengbu 233030, Anhui, China. FAU - Tang, Chengyuan AU - Tang C AUID- ORCID: 0009-0000-1489-1965 AD - Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China. FAU - Wang, Hanyu AU - Wang H AUID- ORCID: 0000-0002-9036-4996 AD - Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China. FAU - Tan, Mengyuan AU - Tan M AUID- ORCID: 0009-0009-8453-8871 AD - Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China. FAU - Xing, Ruyi AU - Xing R AUID- ORCID: 0000-0001-7342-3379 AD - Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China. FAU - Gao, Chen AU - Gao C AUID- ORCID: 0000-0002-2860-4784 AD - Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China. FAU - Zhang, Min AU - Zhang M AUID- ORCID: 0000-0001-5915-8214 AD - Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China. FAU - Xie, Yanhu AU - Xie Y AUID- ORCID: 0000-0003-1704-8249 AD - Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China. LA - eng GR - Xiaoping Chen Foundation/ GR - CXPJJH121003-2216/Development of Science and Technology of Hubei Province/ PT - Journal Article DEP - 20240326 PL - England TA - J Pharm Pharmacol JT - The Journal of pharmacy and pharmacology JID - 0376363 SB - IM OTO - NOTNLM OT - N-methyl-d-aspartate receptors NR2B subunits OT - calcium/calmodulin-dependent protein kinase II alpha OT - ciprofol OT - remifentanil-induced hyperalgesia OT - gamma-aminobutyric acid type A receptors alpha2 subunits EDAT- 2024/03/26 18:43 MHDA- 2024/03/26 18:43 CRDT- 2024/03/26 12:26 PHST- 2023/11/26 00:00 [received] PHST- 2024/02/29 00:00 [accepted] PHST- 2024/03/26 18:43 [medline] PHST- 2024/03/26 18:43 [pubmed] PHST- 2024/03/26 12:26 [entrez] AID - 7635098 [pii] AID - 10.1093/jpp/rgae027 [doi] PST - aheadofprint SO - J Pharm Pharmacol. 2024 Mar 26:rgae027. doi: 10.1093/jpp/rgae027.