PMID- 28343294 OWN - NLM STAT- MEDLINE DCOM- 20180306 LR - 20200930 IS - 1559-1166 (Electronic) IS - 0895-8696 (Linking) VI - 62 IP - 1 DP - 2017 May TI - Neuroprotective Role of Exogenous Brain-Derived Neurotrophic Factor in Hypoxia-Hypoglycemia-Induced Hippocampal Neuron Injury via Regulating Trkb/MiR134 Signaling. PG - 35-42 LID - 10.1007/s12031-017-0907-z [doi] AB - Hypoxic-ischemic brain injury is an important cause of neonatal mortality and morbidity. Brain-derived neurotrophic factor (BDNF) has been reported to play a neuroprotective role in hypoxic-ischemic brain injury; however, the specific effects and mechanism of BDNF on hypoxic-hypoglycemic hippocampal neuron injury remains unknown. The current study investigated the action of BDNF in regulating cerebral hypoxic-ischemic injury by simulating hippocampal neuron ischemia and hypoxia. We found that BDNF, p-Trkb, and miR-134 expression levels decreased, and that exogenous BDNF increased survival and reduced apoptosis in hypoxic-hypoglycemic hippocampal neurons. The results also show that BDNF inhibits MiR-134 expression by activating the TrkB pathway. Transfection with TrkB siRNA and pre-miR-134 abrogated the neuroprotective role of BDNF in hypoxic-hypoglycemic hippocampal neurons. Our results suggest that exogenous BDNF alleviates hypoxic-ischemic brain injury through the Trkb/MiR-134 pathway. These findings may help to identify a potential therapeutic agent for the treatment of hypoxic-ischemic brain injury. FAU - Huang, Weidong AU - Huang W AD - Department of Neurosurgery, Shaanxi Provincial People's Hospital, NO 256, Youyi West Road, Xi'an, 710068, China. weidonghuangsx@163.com. FAU - Meng, Facai AU - Meng F AD - Department of Neurosurgery, Shaanxi Provincial People's Hospital, NO 256, Youyi West Road, Xi'an, 710068, China. FAU - Cao, Jie AU - Cao J AD - Department of Neurosurgery, Shaanxi Provincial People's Hospital, NO 256, Youyi West Road, Xi'an, 710068, China. FAU - Liu, Xiaobin AU - Liu X AD - Department of Neurosurgery, Shaanxi Provincial People's Hospital, NO 256, Youyi West Road, Xi'an, 710068, China. FAU - Zhang, Jie AU - Zhang J AD - Department of Neurosurgery, Shaanxi Provincial People's Hospital, NO 256, Youyi West Road, Xi'an, 710068, China. FAU - Li, Min AU - Li M AD - Department of Neurosurgery, Shaanxi Provincial People's Hospital, NO 256, Youyi West Road, Xi'an, 710068, China. LA - eng PT - Journal Article DEP - 20170326 PL - United States TA - J Mol Neurosci JT - Journal of molecular neuroscience : MN JID - 9002991 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (MIRN134 microRNA, rat) RN - 0 (MicroRNAs) RN - 0 (Neuroprotective Agents) RN - EC 2.7.10.1 (Ntrk2 protein, rat) RN - EC 2.7.10.1 (Receptor, trkB) RN - IY9XDZ35W2 (Glucose) RN - S88TT14065 (Oxygen) SB - IM MH - Animals MH - Apoptosis MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Cell Hypoxia MH - Cells, Cultured MH - Glucose/deficiency MH - Hippocampus/cytology/metabolism MH - MicroRNAs/*genetics/metabolism MH - Neurons/drug effects/*metabolism MH - Neuroprotective Agents/*pharmacology MH - Oxygen/*metabolism MH - Rats MH - Receptor, trkB/*metabolism MH - Signal Transduction OTO - NOTNLM OT - BDNF OT - Hypoxic-ischemic brain injury OT - TrkB OT - hippocampal neuron OT - miR-134 EDAT- 2017/03/28 06:00 MHDA- 2018/03/07 06:00 CRDT- 2017/03/27 06:00 PHST- 2016/11/20 00:00 [received] PHST- 2017/02/27 00:00 [accepted] PHST- 2017/03/28 06:00 [pubmed] PHST- 2018/03/07 06:00 [medline] PHST- 2017/03/27 06:00 [entrez] AID - 10.1007/s12031-017-0907-z [pii] AID - 10.1007/s12031-017-0907-z [doi] PST - ppublish SO - J Mol Neurosci. 2017 May;62(1):35-42. doi: 10.1007/s12031-017-0907-z. Epub 2017 Mar 26.