PMID- 31018150 OWN - NLM STAT- MEDLINE DCOM- 20200424 LR - 20220208 IS - 1872-9754 (Electronic) IS - 0197-0186 (Linking) VI - 128 DP - 2019 Sep TI - Activation of liver x receptors prevents the spinal LTP induced by skin/muscle retraction in the thigh via SIRT1/NF-Kappab pathway. PG - 106-114 LID - S0197-0186(19)30034-8 [pii] LID - 10.1016/j.neuint.2019.04.002 [doi] AB - It has been reported that skin/muscle incision and retraction (SMIR) in the thigh, produces mechanical allodynia in the hind paw, far from the site of incision/retraction. The mechanical allodynia lasts about 22 days, indicating chronic post-operative pain develops. The precise mechanisms, however, are largely unclear. In the current study, we further found that SMIR surgery induced LTP of c-fiber evoked field potentials that lasted at least 4 h. The mRNA and protein level of tumor necrosis factor-alpha (TNFalpha) and acetylated nuclear factor-kappaB p65 (ac-NF-kappaB p65) in the lumbar spinal dorsal horn was gradually increased during LTP development, while pretreatment with either TNFalpha neutralization antibody or NF-kappaB inhibitor PDTC completely prevented the induction of LTP. Moreover, the expression of Silent information regulator 1 (SIRT1) in the lumbar spinal dorsal horn was decreased and activation of SIRT1 by SRT1720 also prevented the induction of LTP. Importantly, the spinal expression of Liver X receptors (LXRs) was increased, both at mRNA and protein level following SMIR. Application of LXRs agonist T0901317 to the spinal dorsal horn prevented LTP induction following SMIR. Mechanistically, T0901317 enhanced the expression of SIRT1 and decreased the expression of ac-NF-kappaB p65 and TNFalpha. Spinal application of SIRT1 antagonist EX-527, 30 min before T0901317 administration, completely blocked the inhibiting effect of T0901317 on LTP, and on expression of ac-NF-kappaB p65 and TNFalpha. These results indicated that activation of LXRs prevented SMIR-induced LTP by inhibiting NF-kappaB/TNFalpha pathway via increasing SIRT1 expression. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Zhong, Xiongxiong AU - Zhong X AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, PR China. FAU - Wang, Wei AU - Wang W AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, PR China. FAU - Mao, Zuchao AU - Mao Z AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, PR China. Electronic address: maozch@mail2.sysu.edu.cn. FAU - Gao, Feng AU - Gao F AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, PR China. FAU - Guo, Ruixian AU - Guo R AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, PR China; Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangzhou, Guangdong, PR China. FAU - Wei, Xuxia AU - Wei X AD - Department of Surgery ICU, The Third Affliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, PR China. Electronic address: weixuxia06@163.com. FAU - Liu, Xianguo AU - Liu X AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, PR China; Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangzhou, Guangdong, PR China. Electronic address: liuxg@mail.sysu.edu.cn. FAU - Wei, Xuhong AU - Wei X AD - Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, PR China; Guangdong Provincial Key Laboratory of Brain Function and Disease, Guangzhou, Guangdong, PR China. Electronic address: weixhong@mail.sysu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190421 PL - England TA - Neurochem Int JT - Neurochemistry international JID - 8006959 RN - 0 (6-chloro-2,3,4,9-tetrahydro-1H-carbazole-1-carboxamide) RN - 0 (Carbazoles) RN - 0 (Hydrocarbons, Fluorinated) RN - 0 (Liver X Receptors) RN - 0 (NF-kappa B) RN - 0 (Sulfonamides) RN - 0 (T0901317) RN - EC 3.5.1.- (Sirt1 protein, rat) RN - EC 3.5.1.- (Sirtuin 1) SB - IM MH - Animals MH - Carbazoles/pharmacology MH - Hydrocarbons, Fluorinated/pharmacology MH - Liver X Receptors/agonists/*metabolism MH - Long-Term Potentiation/drug effects/*physiology MH - Male MH - Muscle, Skeletal/metabolism/surgery MH - NF-kappa B/*biosynthesis MH - Posterior Horn Cells/drug effects/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Sirtuin 1/antagonists & inhibitors/*biosynthesis MH - Skin/metabolism MH - Sulfonamides/pharmacology MH - Surgical Wound/*metabolism OTO - NOTNLM OT - Acetylated nuclear factor kappaB OT - Liver X receptor OT - Long term potentiation OT - Silent information regulator 1 OT - Tumor necrosis factor-alpha EDAT- 2019/04/25 06:00 MHDA- 2020/04/25 06:00 CRDT- 2019/04/25 06:00 PHST- 2019/01/15 00:00 [received] PHST- 2019/04/03 00:00 [revised] PHST- 2019/04/05 00:00 [accepted] PHST- 2019/04/25 06:00 [pubmed] PHST- 2020/04/25 06:00 [medline] PHST- 2019/04/25 06:00 [entrez] AID - S0197-0186(19)30034-8 [pii] AID - 10.1016/j.neuint.2019.04.002 [doi] PST - ppublish SO - Neurochem Int. 2019 Sep;128:106-114. doi: 10.1016/j.neuint.2019.04.002. Epub 2019 Apr 21.