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中国临床药理学与治疗学 ›› 2003, Vol. 8 ›› Issue (2): 139-142.

• 研究原著 • 上一篇    下一篇

3-硝基丙酸预处理诱导沙土鼠脑缺血耐受与海马星形胶质细胞的激活1

朱红灿, 孙圣刚, 李红戈   

  1. 华中科技大学同济医学院附属协和医院神经内科, 武汉 430030, 湖北
  • 收稿日期:2002-11-04 修回日期:2002-12-04 出版日期:2003-04-26 发布日期:2020-11-25
  • 通讯作者: 朱红灿, 男, 博士生。Tel:027-83692375 E-mail:zhc660407@hotmail.net
  • 作者简介:孙圣刚, 男, 博士, 教授, 博士生导师, 研究方向:脑血管病和帕金森病。
  • 基金资助:
    1 留学归国人员基金项目(№2001345)

Relation between activation of hippocampal astrocytes and ischemic tolerance induced by 3-nitropropionic acid in gerbils1

ZHU Hong-Can, SUN Sheng-Gang, LI Hong-Ge   

  1. Department of Neurology, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430030, Hubei
  • Received:2002-11-04 Revised:2002-12-04 Online:2003-04-26 Published:2020-11-25

摘要: 目的: 探讨海马区星形胶质细胞的激活与3-硝基丙酸(3-NPA) 预处理诱导脑缺血耐受的关系。方法: 阻断沙土鼠双侧颈总动脉造成前脑缺血模型,通过HE 染色和免疫组化观察海马锥体细胞死亡和星形胶质细胞的反应。结果: 对照组海马CA1 区已失去正常结构, 锥体细胞大部分丧失, 存活神经元计数显著低于假手术组。3-NPA 预处理组存活神经元减少, 但高于对照组。假手术组海马CA1 区仅见少量胶质原纤维酸性蛋白(GFAP) 阳性细胞, 染色较弱, 突起不明显。对照组海马CA1 区GFAP 阳性细胞增多, 多为弱阳性。3-NPA 预处理组海马CA1 区GFAP 阳性细胞数目明显增多, 染色较深, 突起增粗。结论: 星形胶质细胞形态和机能的改变可能与3-硝基丙酸预处理诱导脑缺血耐受有关。

关键词: 药效学, 3-硝基丙酸, 脑缺血耐受, 星形胶质细胞, 海马, 沙土鼠

Abstract: AIM: To investigate the relationship between astroglial activation state and ischemic tolerance induced by low dose of 3-nitropropionic acid (3-NPA) in gerbil hippocampus. METHODS: Transient forebrain ischemic model was induced by bilateral common carotid arteries occlution.HE staining and immunohistochemistry were used to identify neuronal and astrocyte response. RESULTS: Preconditioning with 3-NPA produced protective effects of CA1neurons.The number of glial fibrillary acidic protein positive astrocyte in hippocampal CA1 region increased slightly in control group, but increased significantly in preconditioning of the brain with 3-nitropropionic acid. CONCLUSION: The state of astroglial activation is related to neuronal survival in ischemic tolerance induced by low dose of 3-nitropropionic acid.

Key words: pharmacodynamics, 3-nitropropionic acid, cerebral ischemic tolerance, astrocyte, hippocampus, gerbil

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