个人信息Personal Information
副教授
硕士生导师
性别:女
毕业院校:大连理工大学
学位:博士
所在单位:生物工程学院
学科:生物化工. 药理学. 神经生物学
办公地点:生物工程学院 323
联系方式:bojiang@dlut.edu.cn 13842650392
电子邮箱:bojiang@dlut.edu.cn
Catalpol protects primary cultured astrocytes from in vitro ischemia-induced damage
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论文类型:期刊论文
发表时间:2008-05-01
发表刊物:INTERNATIONAL JOURNAL OF DEVELOPMENTAL NEUROSCIENCE
收录刊物:SCIE、PubMed
卷号:26
期号:3-4
页面范围:309-317
ISSN号:0736-5748
关键字:catalpol; astrocyte; ischemia; ROS; iNOS
摘要:Catalpol, an iridoid glycoside abundant in the roots of Rehmannia glutinosa, has been previously found to prevent the loss of CA1 hippocampal neurons and to reduce working errors in gerbils after ischemia-reperfusion injury. In the present study, we investigated the effects of catalpol on astrocytes in an ischemic model to further characterize its neuroprotective mechanisms. Primary cultured astrocytes exposed to oxygen-glucose deprivation (OGD) followed by reperfusion (adding back oxygen and glucose, OGD-R), were used as an in vitro ischemic model. Treatment of the astrocytes with catalpol during ischemia-reperfusion increased astrocyte survival significantly in a concentration-dependent manner, as demonstrated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, lactate dehydrogenase (LDH) release and morphological observation. In addition, catalpol prevented the decrease in mitochondrial membrane potential, inhibited the formation of reactive oxygen species (ROS) and the production of nitric oxide (NO), decreased the level of lipid peroxide and the activity of inducible nitric oxide synthase (iNOS), and elevated the activities of superoxide dismutase (SOD), glutathione peroxidase (GPx) and the content of glutathione (GSH). Our results suggest that catalpol exerts the most significant cytoprotective effect on astrocytes by suppressing the production of free radicals and elevating antioxidant capacity. (C) 2008 ISDN. Published by Elsevier Ltd. All rights reserved.