PMID- 25862938 OWN - NLM STAT- MEDLINE DCOM- 20160328 LR - 20181113 IS - 1095-953X (Electronic) IS - 0969-9961 (Print) IS - 0969-9961 (Linking) VI - 78 DP - 2015 Jun TI - Neuroprotective role of an N-acetyl serotonin derivative via activation of tropomyosin-related kinase receptor B after subarachnoid hemorrhage in a rat model. PG - 126-33 LID - S0969-9961(15)00107-2 [pii] LID - 10.1016/j.nbd.2015.01.009 [doi] AB - N-[2-(5-hydroxy-1H-indol-3-yl) ethyl]-2-oxopiperidine-3-carboxamide (HIOC), an N-acetyl serotonin derivative, selectively activates tropomyosin-related kinase receptor B (TrkB). This study is to investigate a potential role of HIOC on ameliorating early brain injury after experimental subarachnoid hemorrhage (SAH). One hundred and fifty-six adult male Sprague-Dawley rats were used. SAH model was induced by endovascular perforation. TrkB small interfering RNA (siRNA) or scramble siRNA was injected intracerebroventricularly 24h before SAH. HIOC was administrated intracerebroventricularly 3h after SAH and compared with brain-derived neurotrophic factor (BDNF). SAH grade and neurologic scores were evaluated for the outcome study. For the mechanism study, the expression of TrkB, phosphorylated TrkB (p-TrkB), phosphorylated extracellular signal regulated kinase (p-ERK), B-cell lymphoma 2 (Bcl-2) and cleaved caspase 3 (CC3) was detected by Western blots, and neuronal injury was determined by double immunofluorescence staining of neuronal nuclei and terminal deoxynucleotidyl transferase-mediated uridine 5'-triphosphate-biotin nick end-labeling. Knocking down of TrkB decreased the expression of Bcl-2 and aggravated neurologic deficits 24h after SAH. HIOC activated TrkB/ERK pathway, decreased neuronal cell death, and improved neurobehavioral outcome, and these effects were abolished by TrkB siRNA. HIOC was more potent than BDNF in reduction of apoptosis 24h post-SAH. Thus, we conclude that administration of HIOC activated TrkB/ERK signaling cascade and attenuated early brain injury after SAH. HIOC may be a promising agent for further treatment for SAH and other stroke events. CI - Copyright (c) 2015. Published by Elsevier Inc. FAU - Tang, Junjia AU - Tang J AD - Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA. FAU - Hu, Qin AU - Hu Q AD - Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA. FAU - Chen, Yujie AU - Chen Y AD - Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA. FAU - Liu, Fei AU - Liu F AD - Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA. FAU - Zheng, Yun AU - Zheng Y AD - Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA. FAU - Tang, Jiping AU - Tang J AD - Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA. FAU - Zhang, Jianmin AU - Zhang J AD - Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China. Electronic address: zjm135@vip.sina.com. FAU - Zhang, John H AU - Zhang JH AD - Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA. Electronic address: johnzhang3910@yahoo.com. LA - eng GR - R01 NS081740/NS/NINDS NIH HHS/United States GR - R01 NS084921/NS/NINDS NIH HHS/United States GR - NS081740/NS/NINDS NIH HHS/United States GR - NS084921/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150408 PL - United States TA - Neurobiol Dis JT - Neurobiology of disease JID - 9500169 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Neuroprotective Agents) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 333DO1RDJY (Serotonin) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Animals MH - Apoptosis/drug effects MH - Brain/metabolism MH - Brain-Derived Neurotrophic Factor/metabolism MH - Disease Models, Animal MH - MAP Kinase Signaling System/drug effects MH - Male MH - Neurons/metabolism MH - Neuroprotective Agents/*administration & dosage MH - Phosphorylation MH - Proto-Oncogene Proteins c-bcl-2/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Receptor, trkB/agonists/*metabolism MH - Serotonin/*administration & dosage/*analogs & derivatives MH - Subarachnoid Hemorrhage/*metabolism/*prevention & control PMC - PMC4545490 MID - NIHMS679235 OTO - NOTNLM OT - Apoptosis OT - Brain-derived neurotrophic factor OT - Early brain injury OT - N-acetyl serotonin derivative OT - Subarachnoid hemorrhage OT - Tropomyosin-related kinase receptor B EDAT- 2015/04/12 06:00 MHDA- 2016/03/29 06:00 PMCR- 2016/06/01 CRDT- 2015/04/12 06:00 PHST- 2014/10/23 00:00 [received] PHST- 2014/12/27 00:00 [revised] PHST- 2015/01/30 00:00 [accepted] PHST- 2015/04/12 06:00 [entrez] PHST- 2015/04/12 06:00 [pubmed] PHST- 2016/03/29 06:00 [medline] PHST- 2016/06/01 00:00 [pmc-release] AID - S0969-9961(15)00107-2 [pii] AID - 10.1016/j.nbd.2015.01.009 [doi] PST - ppublish SO - Neurobiol Dis. 2015 Jun;78:126-33. doi: 10.1016/j.nbd.2015.01.009. Epub 2015 Apr 8.