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Promoting neurogenesis via Wnt/beta-catenin signaling pathway accounts for the neurorestorative effects of morroniside against cerebral ischemia injury

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机构: [a]Department of Pharmacology, Xuanwu Hospital of Capital Medical University, 45 Chang-chun Street, Beijing 100053, China [b]Department of Physiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China [c]Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, No.10 Xitoutiao, You An Men Beijing 100069, China [d]Department of Neurosurgery, Xuanwu Hospital of Capital Medical University. 45 Chang-chun Street, Beiing 100053, China
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关键词: lschemic stroke Morroniside Neurogenesis Wnt/beta-catenin signaling

摘要:
Ischemic stroke is a leading cause of mortality and permanent disability in adults worldwide. Neurogenesis triggered by ischemia in the adult mammalian brain may provide insights into stroke treatment. Morroniside is an active component of sarcocarp of C. officinalis that have shown neuroprotective effects. The aim of the present study is to test whether morroniside promotes neurogenesis via Wnt/beta-catenin signaling pathway for brain recovery in a rat model of focal cerebral ischemia. Morroniside was administered intragastrically once daily at the concentrations of 30, 90 and 270 mg/kg for 7 days post-ischemia. Neurological functions were detected by Ludmila Belayev score tests. Endogenous neural stem cells responses were investigated with immunofluorescence staining of Ki-67 and Nestin to identify the neurogenesis in the subventricular zone (SVZ). The expression of proteins involved in and related to Wnt/beta-catenin signaling pathway was detected by western blotting analysis. Morroniside significantly promoted neurogenesis for brain recovery 7 days post-ischemia. Increased expression of Writ 3a, P-catenin and T-cell transcription factor-4 (Tcf-4), along with activation of downstream transcription factors Pax6 and neurogenin2 (Ngn2), indicated that the neurorestorative effects of morroniside may be associated with Wnt/beta-catenin signaling pathway. These data provide support for understanding the mechanisms of morroniside in neurorestorative effects and suggest a potential new strategy for ischemic stroke treatment. (C) 2014 Elsevier B.V. All rights reserved.

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出版当年[2013]版:
大类 | 3 区 医学
小类 | 3 区 药学
最新[2023]版:
大类 | 3 区 医学
小类 | 2 区 药学
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出版当年[2012]版:
Q2 PHARMACOLOGY & PHARMACY
最新[2023]版:
Q1 PHARMACOLOGY & PHARMACY

影响因子: 最新[2023版] 最新五年平均 出版当年[2012版] 出版当年五年平均 出版前一年[2011版] 出版后一年[2013版]

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第一作者机构: [a]Department of Pharmacology, Xuanwu Hospital of Capital Medical University, 45 Chang-chun Street, Beijing 100053, China
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通讯机构: [a]Department of Pharmacology, Xuanwu Hospital of Capital Medical University, 45 Chang-chun Street, Beijing 100053, China [c]Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, No.10 Xitoutiao, You An Men Beijing 100069, China
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