PMID- 29574629 OWN - NLM STAT- MEDLINE DCOM- 20181217 LR - 20181217 IS - 1559-1182 (Electronic) IS - 0893-7648 (Linking) VI - 55 IP - 11 DP - 2018 Nov TI - Exercise Rehabilitation Attenuates Cognitive Deficits in Rats with Traumatic Brain Injury by Stimulating the Cerebral HSP20/BDNF/TrkB Signalling Axis. PG - 8602-8611 LID - 10.1007/s12035-018-1011-2 [doi] AB - Physical exercise (PE) is an effective method for improving cognitive function among patients with traumatic brain injury (TBI). We previously demonstrated that PE with an infrared-sensing running wheel (ISRW) system provides strong neuroprotection in an experimental animal model of stroke. In this study, we used fluid percussion injury in rats to simulate mild TBI. For rats, we used both passive avoidance learning and the Y-maze tests to evaluate cognitive function. We investigated whether PE rehabilitation attenuated cognitive deficits in rats with TBI and determined the contribution of hippocampal and cortical expression of heat shock protein 20 (HSP20) to PE-mediated cognitive recovery. In addition to increasing hippocampal and cortical expression of HSP20, brain-derived neurotrophic factor (BDNF), and the tropomyosin receptor kinase B (TrkB) ratio, PE rehabilitation significantly attenuated brain contusion and improved cognitive deficits in the rat model. Furthermore, reducing hippocampal and cortical expression of HSP20 with an intracerebral injection of pSUPER hsp20 small interfering RNA significantly diminished the PE-induced overexpression of hippocampal and cortical BDNF and the TrkB ratio and also reversed the beneficial effect of PE in reducing neurotrauma and the cognitive deficits. A positive Pearson correlation was found between HSP20 and BDNF, as well as between HSP20 and TrkB, in the hippocampal and cortical tissues. We thus conclude that post-ischaemic ISRW exercise rehabilitation attenuates cognitive deficits, as well as brain contusions, in TBI rats by stimulating the cerebral HSP20/BDNF/TrkB signalling axis. FAU - Chou, Willy AU - Chou W AD - Department of Physical Medicine and Rehabilitation, Chi Mei Medical Center, Tainan, 710, Taiwan. AD - Department of Recreation and Healthcare Management, Chia Nan University of Pharmacy and Science, Tainan, 71710, Taiwan. FAU - Liu, Yu-Fan AU - Liu YF AD - Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan. AD - Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, 305-8574, Ibaraki, Japan. FAU - Lin, Cheng-Hsien AU - Lin CH AD - Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan. AD - Department of Leisure, Recreation, and Tourism Management, Southern Taiwan University of Science and Technology, Tainan, 710, Taiwan. FAU - Lin, Mao-Tsun AU - Lin MT AD - Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan. FAU - Chen, Chi-Chun AU - Chen CC AD - Department of Electronic Engineering, National Chin-Yi University of Technology, Taichung, 41170, Taiwan. FAU - Liu, Wen-Pin AU - Liu WP AD - Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan. FAU - Chang, Ching-Ping AU - Chang CP AUID- ORCID: 0000-0003-0890-9414 AD - Department of Medical Research, Chi Mei Medical Center, Tainan, 710, Taiwan. jessica.cpchang@gmail.com. FAU - Chio, Chung-Ching AU - Chio CC AD - Division of Neurosurgery, Department of Surgery, Chi Mei Medical Center, Tainan, 710, Taiwan. chiocc@ms28.hinet.net. LA - eng GR - MOST 104-2314-B-384 -003 -MY3/Ministry of Science and Technology, Taiwan/ GR - MOST 106-2314-B-384-001-MY3/Ministry of Science and Technology, Taiwan/ GR - CMFHT 10504/Chi Mei Medical Center/ PT - Journal Article DEP - 20180325 PL - United States TA - Mol Neurobiol JT - Molecular neurobiology JID - 8900963 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (HSP20 Heat-Shock Proteins) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Animals MH - Brain Contusion/metabolism/pathology MH - Brain Injuries, Traumatic/*complications/*rehabilitation MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Cognition Disorders/*metabolism/*rehabilitation MH - HSP20 Heat-Shock Proteins/*metabolism MH - Hippocampus/metabolism/pathology MH - Male MH - *Physical Conditioning, Animal MH - RNA Interference MH - Rats, Sprague-Dawley MH - Receptor, trkB/*metabolism MH - Signal Transduction OTO - NOTNLM OT - Brain-derived neurotrophic factor OT - Heat shock protein 20 OT - Physical exercise OT - Traumatic brain injury EDAT- 2018/03/27 06:00 MHDA- 2018/12/18 06:00 CRDT- 2018/03/26 06:00 PHST- 2017/09/15 00:00 [received] PHST- 2018/03/16 00:00 [accepted] PHST- 2018/03/27 06:00 [pubmed] PHST- 2018/12/18 06:00 [medline] PHST- 2018/03/26 06:00 [entrez] AID - 10.1007/s12035-018-1011-2 [pii] AID - 10.1007/s12035-018-1011-2 [doi] PST - ppublish SO - Mol Neurobiol. 2018 Nov;55(11):8602-8611. doi: 10.1007/s12035-018-1011-2. Epub 2018 Mar 25.