PMID- 30232930 OWN - NLM STAT- MEDLINE DCOM- 20190114 LR - 20240402 IS - 1744-8069 (Electronic) IS - 1744-8069 (Linking) VI - 14 DP - 2018 Jan-Dec TI - Surgical incision induces learning impairment in mice partially through inhibition of the brain-derived neurotrophic factor signaling pathway in the hippocampus and amygdala. PG - 1744806918805902 LID - 10.1177/1744806918805902 [doi] LID - 1744806918805902 AB - Surgical incision-induced nociception contributes to the occurrence of postoperative cognitive dysfunction. However, the exact mechanisms involved remain unclear. Brain-derived neurotrophic factor (BDNF) has been demonstrated to improve fear learning ability. In addition, BDNF expression is influenced by the peripheral nociceptive stimulation. Therefore, we hypothesized that surgical incision-induced nociception may cause learning impairment by inhibiting the BDNF/tropomyosin-related kinase B (TrkB) signaling pathway. The fear conditioning test, enzyme-linked immunosorbent assay, and Western blot analyses were used to confirm our hypothesis and determine the effect of a plantar incision on the fear learning and the BDNF/TrkB signaling pathway in the hippocampus and amygdala. The freezing times in the context test and the tone test were decreased after the plantar incision. A eutectic mixture of local anesthetics attenuated plantar incision-induced postoperative pain and fear learning impairment. ANA-12, a selective TrkB antagonist, abolished the improvement in fear learning and the activation of the BDNF signaling pathway induced by eutectic mixture of local anesthetics. Based on these results, surgical incision-induced postoperative pain, which was attenuated by postoperative analgesia, caused learning impairment in mice partially by inhibiting the BDNF signaling pathway. These findings provide insights into the mechanism underlying surgical incision-induced postoperative cognitive function impairment. FAU - Liu, Zhen AU - Liu Z AD - 1 Department of Anesthesiology, Peking Union Medical College Hospital, Beijing, China. AD - 2 Department of Anesthesiology, Beijing Hospital, Beijing, China. FAU - Liu, Fan AU - Liu F AD - 3 Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Human Anatomy, Histology and Embryology, Neuroscience Center, School of Basic Medicine, Joint Laboratory of Anesthesia and Pain, Peking Union Medical College, Beijing, China. FAU - Liu, Xiaowen AU - Liu X AD - 1 Department of Anesthesiology, Peking Union Medical College Hospital, Beijing, China. AD - 4 Department of Anesthesiology, China-Japan Friendship Hospital, Beijing, China. FAU - Ma, Chao AU - Ma C AD - 3 Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Human Anatomy, Histology and Embryology, Neuroscience Center, School of Basic Medicine, Joint Laboratory of Anesthesia and Pain, Peking Union Medical College, Beijing, China. FAU - Zhao, Jing AU - Zhao J AD - 4 Department of Anesthesiology, China-Japan Friendship Hospital, Beijing, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180920 PL - United States TA - Mol Pain JT - Molecular pain JID - 101242662 RN - 0 (ANA 12 compound) RN - 0 (Azepines) RN - 0 (Benzamides) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Cytokines) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Amygdala/drug effects/*metabolism MH - Animals MH - Azepines/therapeutic use MH - Benzamides/therapeutic use MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Cytokines/metabolism MH - Exploratory Behavior/drug effects MH - Fear/drug effects MH - Gene Expression Regulation/drug effects MH - Hippocampus/drug effects/*metabolism MH - Learning Disabilities/drug therapy/*etiology/*pathology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Plantar Plate/innervation/pathology MH - Receptor, trkB/antagonists & inhibitors MH - Signal Transduction MH - Surgical Wound/*complications MH - Time Factors PMC - PMC6194924 OTO - NOTNLM OT - brain-derived neurotrophic factor OT - learning impairment OT - postoperative cognitive dysfunction OT - surgical incision OT - tropomyosin-related kinase B EDAT- 2018/09/21 06:00 MHDA- 2019/01/15 06:00 PMCR- 2018/09/20 CRDT- 2018/09/21 06:00 PHST- 2018/09/21 06:00 [pubmed] PHST- 2019/01/15 06:00 [medline] PHST- 2018/09/21 06:00 [entrez] PHST- 2018/09/20 00:00 [pmc-release] AID - 10.1177_1744806918805902 [pii] AID - 10.1177/1744806918805902 [doi] PST - ppublish SO - Mol Pain. 2018 Jan-Dec;14:1744806918805902. doi: 10.1177/1744806918805902. Epub 2018 Sep 20.