PMID- 24603592 OWN - NLM STAT- MEDLINE DCOM- 20150130 LR - 20211124 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 9 IP - 3 DP - 2014 TI - Curcumin alleviates neuropathic pain by inhibiting p300/CBP histone acetyltransferase activity-regulated expression of BDNF and cox-2 in a rat model. PG - e91303 LID - 10.1371/journal.pone.0091303 [doi] LID - e91303 AB - The management of neuropathic pain is still a major challenge because of its unresponsiveness to most common treatments. Curcumin has been reported to play an active role in the treatment of various neurological disorders, such as neuropathic pain. Curcumin has long been recognized as a p300/CREB-binding protein (CBP) inhibitor of histone acetyltransferase (HAT) activity. However, this mechanism has never been investigated for the treatment of neuropathic pain with curcumin. The aim of the present study was to investigate the anti-nociceptive role of curcumin in the chronic constriction injury (CCI) rat model of neuropathic pain. Furthermore, with this model we investigated the effect of curcumin on P300/CBP HAT activity-regulated release of the pro-nociceptive molecules, brain-derived neurotrophic factor (BDNF) and cyclooxygenase-2 (Cox-2). Treatment with 40 and 60 mg/kg body weight curcumin for 7 consecutive days significantly attenuated CCI-induced thermal hyperalgesia and mechanical allodynia, whereas 20 mg/kg curcumin showed no significant analgesic effect. Chromatin immunoprecipitation analysis revealed that curcumin dose-dependently reduced the recruitment of p300/CBP and acetyl-Histone H3/acetyl-Histone H4 to the promoter of BDNF and Cox-2 genes. A similar dose-dependent decrease of BDNF and Cox-2 in the spinal cord was also observed after curcumin treatment. These results indicated that curcumin exerted a therapeutic role in neuropathic pain by down-regulating p300/CBP HAT activity-mediated gene expression of BDNF and Cox-2. FAU - Zhu, Xiaoyan AU - Zhu X AD - Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, China. FAU - Li, Qian AU - Li Q AD - Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, China. FAU - Chang, Ruimin AU - Chang R AD - Liver Cancer Laboratory, Xiangya Hospital of Central South University, Changsha, China. FAU - Yang, Dong AU - Yang D AD - Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. FAU - Song, Zongbing AU - Song Z AD - Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, China. FAU - Guo, Qulian AU - Guo Q AD - Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, China. FAU - Huang, Changsheng AU - Huang C AD - Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140306 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Analgesics) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Enzyme Inhibitors) RN - 0 (Histones) RN - EC 1.14.99.1 (Cyclooxygenase 2) RN - EC 2.3.1.48 (p300-CBP Transcription Factors) RN - IT942ZTH98 (Curcumin) RN - K3Z4F929H6 (Lysine) SB - IM MH - Acetylation/drug effects MH - Analgesics/pharmacology/therapeutic use MH - Animals MH - Brain-Derived Neurotrophic Factor/*genetics/metabolism MH - Curcumin/*pharmacology/therapeutic use MH - Cyclooxygenase 2/*genetics/metabolism MH - Disease Models, Animal MH - Enzyme Inhibitors/pharmacology/therapeutic use MH - Gene Expression Regulation, Enzymologic/*drug effects MH - Histones/chemistry/metabolism MH - Lysine/metabolism MH - Male MH - Neuralgia/*drug therapy/*genetics/metabolism/physiopathology MH - Nociception/drug effects MH - Promoter Regions, Genetic/drug effects/genetics MH - Protein Transport/drug effects MH - Rats MH - Rats, Sprague-Dawley MH - Spinal Cord/drug effects/metabolism MH - p300-CBP Transcription Factors/*antagonists & inhibitors/metabolism PMC - PMC3946321 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2014/03/08 06:00 MHDA- 2015/01/31 06:00 PMCR- 2014/03/06 CRDT- 2014/03/08 06:00 PHST- 2013/11/12 00:00 [received] PHST- 2014/02/10 00:00 [accepted] PHST- 2014/03/08 06:00 [entrez] PHST- 2014/03/08 06:00 [pubmed] PHST- 2015/01/31 06:00 [medline] PHST- 2014/03/06 00:00 [pmc-release] AID - PONE-D-13-47409 [pii] AID - 10.1371/journal.pone.0091303 [doi] PST - epublish SO - PLoS One. 2014 Mar 6;9(3):e91303. doi: 10.1371/journal.pone.0091303. eCollection 2014.