PMID- 28243312 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1741-427X (Print) IS - 1741-4288 (Electronic) IS - 1741-427X (Linking) VI - 2017 DP - 2017 TI - Acupuncture Improved Neurological Recovery after Traumatic Brain Injury by Activating BDNF/TrkB Pathway. PG - 8460145 LID - 10.1155/2017/8460145 [doi] LID - 8460145 AB - How to promote neural repair following traumatic brain injury (TBI) has long been an intractable problem. Although acupuncture has been demonstrated to facilitate the neurological recovery, the underlying mechanism is elusive. Brain-derived neurotrophic factor (BDNF) exerts substantial protective effects for neurological disorders. In this study, we found that the level of BDNF and tropomyosin receptor kinase B (TrkB) was elevated spontaneously after TBI and reached up to the peak at 12 h. Nevertheless, this enhancement is quickly declined to the normal at 48 h. After combined stimulation at the acupoints of Baihui, Renzhong, Hegu, and Zusanli, we found that BDNF and TrkB were still significantly elevated at 168 h. We also observed that the downstream molecular p-Akt and p-Erk1/2 were significantly increased, suggesting that acupuncture could persistently activate the BDNF/TrkB pathway. To further verify that acupuncture improved recovery through activating BDNF/TrkB pathway, K252a (specific inhibitor of TrkB) was treated by injection stereotaxically into lateral ventricle. We observed that K252a could significantly prevent the acupuncture-induced amelioration of motor, sensation, cognition, and synaptic plasticity. These data indicated that acupuncture promoted the recovery of neurological impairment after TBI by activating BDNF/TrkB signaling pathway, providing new molecular mechanism for understanding traditional therapy of acupuncture. FAU - Li, Xiaohong AU - Li X AD - Institute of Traumatic Brain Injury and Neurology, Pingjin Hospital, Logistics University of Chinese People's Armed Police Forces, Tianjin 300162, China; Key Laboratory of Neurotrauma Repair of Tianjin, Tianjin 300162, China. FAU - Chen, Chong AU - Chen C AD - Institute of Traumatic Brain Injury and Neurology, Pingjin Hospital, Logistics University of Chinese People's Armed Police Forces, Tianjin 300162, China; Key Laboratory of Neurotrauma Repair of Tianjin, Tianjin 300162, China. FAU - Yang, Xiping AU - Yang X AD - Institute of Traumatic Brain Injury and Neurology, Pingjin Hospital, Logistics University of Chinese People's Armed Police Forces, Tianjin 300162, China; Key Laboratory of Neurotrauma Repair of Tianjin, Tianjin 300162, China. FAU - Wang, Jingjing AU - Wang J AD - Institute of Traumatic Brain Injury and Neurology, Pingjin Hospital, Logistics University of Chinese People's Armed Police Forces, Tianjin 300162, China; Key Laboratory of Neurotrauma Repair of Tianjin, Tianjin 300162, China. FAU - Zhao, Ming-Liang AU - Zhao ML AD - Institute of Traumatic Brain Injury and Neurology, Pingjin Hospital, Logistics University of Chinese People's Armed Police Forces, Tianjin 300162, China; Key Laboratory of Neurotrauma Repair of Tianjin, Tianjin 300162, China. FAU - Sun, Hongtao AU - Sun H AD - Institute of Traumatic Brain Injury and Neurology, Pingjin Hospital, Logistics University of Chinese People's Armed Police Forces, Tianjin 300162, China; Key Laboratory of Neurotrauma Repair of Tianjin, Tianjin 300162, China. FAU - Zhang, Sai AU - Zhang S AUID- ORCID: 0000-0002-8028-4183 AD - Institute of Traumatic Brain Injury and Neurology, Pingjin Hospital, Logistics University of Chinese People's Armed Police Forces, Tianjin 300162, China; Key Laboratory of Neurotrauma Repair of Tianjin, Tianjin 300162, China. FAU - Tu, Yue AU - Tu Y AUID- ORCID: 0000-0001-5592-4751 AD - Institute of Traumatic Brain Injury and Neurology, Pingjin Hospital, Logistics University of Chinese People's Armed Police Forces, Tianjin 300162, China; Key Laboratory of Neurotrauma Repair of Tianjin, Tianjin 300162, China. LA - eng PT - Journal Article DEP - 20170124 PL - United States TA - Evid Based Complement Alternat Med JT - Evidence-based complementary and alternative medicine : eCAM JID - 101215021 PMC - PMC5294361 COIS- There are no actual or potential competing interests. EDAT- 2017/03/01 06:00 MHDA- 2017/03/01 06:01 PMCR- 2017/01/24 CRDT- 2017/03/01 06:00 PHST- 2016/08/24 00:00 [received] PHST- 2016/11/15 00:00 [revised] PHST- 2016/11/28 00:00 [accepted] PHST- 2017/03/01 06:00 [entrez] PHST- 2017/03/01 06:00 [pubmed] PHST- 2017/03/01 06:01 [medline] PHST- 2017/01/24 00:00 [pmc-release] AID - 10.1155/2017/8460145 [doi] PST - ppublish SO - Evid Based Complement Alternat Med. 2017;2017:8460145. doi: 10.1155/2017/8460145. Epub 2017 Jan 24.