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中国临床药理学与治疗学 ›› 2014, Vol. 19 ›› Issue (9): 984-987.

• 基础研究 • 上一篇    下一篇

氯沙坦对离体培养大鼠海马神经元缺糖缺氧损伤的保护作用

陈江瑛1, 闫振文2, 张素平1, 尹义臣1   

  1. 1 暨南大学医学院第四附属医院广州红十字会医院神经内科,广州 510220,广东;
    2 中山大学孙逸仙纪念医院神经科,广州 510120,广东
  • 收稿日期:2013-11-25 修回日期:2014-07-24 出版日期:2014-09-26 发布日期:2014-09-26
  • 作者简介:陈江瑛,女,硕士, 副主任医师,研究方向:脑血管病,神经遗传性疾病。 Tel: 15013316701 E-mail: carolinecjy@hotmail.com
  • 基金资助:
    广州市中医药、中西医结合科研课题(2009A25); 广东省中医药局科研立项(A2010020); 广州市卫生局一般引导项目(20131A011047); 广东省医学科研基金立项(A2013506)

Protection of losartan on cultured rats hippocampal neurons odels of hypoglycemia anoxia injury in vitro

CHEN Jiang-ying1, YAN Zhen-wen2, ZHANG Su-ping1, YIN Yi-chen1   

  1. 1 Department of Neurology of Guangzhou Red Cross Hospital, Medical College,Jinan University, Guangzhou 510220, Guangdong,China;
    2 Department of Neurology,Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, Guangdong,China
  • Received:2013-11-25 Revised:2014-07-24 Online:2014-09-26 Published:2014-09-26

摘要: 目的 研究氯沙坦对离体培养大鼠海马神经元细胞缺糖缺氧损伤的保护作用及机制。方法 取大鼠海马神经元细胞进行原代培养,分为3组:对照组、氯沙坦低剂量组、氯沙坦高剂量组。通过建立缺糖缺氧培养条件的细胞损伤模型,观察氯沙坦对细胞凋亡的拮抗作用。Tunel染色检测神经元凋亡细胞,Western blot免疫印迹方法观察Caspase-3蛋白表达改变。结果 缺糖缺氧环境可诱导海马神经元凋亡,预先加入不同剂量氯沙坦进行处理后,活性Caspase-3蛋白水平降低,神经元凋亡细胞百分比明显下降(P<0.05)。结论 氯沙坦预处理能够减少脑缺血缺氧损伤所致的大鼠海马CA1区神经元凋亡,呈剂量依赖性,其作用机制与Caspase依赖性途径相关。

关键词: 氯沙坦, 缺糖缺氧, 细胞凋亡

Abstract: AIM: To study the effects and possible mechanisms of losartan on cultured rats hippocampal neurons models of hypoglycemia anoxia injury in vitro. METHODS: The hippocampal neurons were cultured in vitro,and then cells were randomly divided into the hypoxic ischemic injury group,losartan low-dose group,losartan high-dose group.The cell model of hypoxic ischemic was established by oxygen-glucose deprivation mimicking cerebral hypoxic ischemic injury.Neuron apoptosis in hippocampus tissue were determined with Tunel staining.The expression levels of active-caspase-3 protein were observed by Western blot analysis.RESULTS: 12 h deprivation of oxygen-glucose induced cell apoptosis of hippocampal neurons. Cell apoptosis and expression of active caspase-3 were significantly decreased in pre-treatment losartan group.CONCLUSION: Losartan had protective effects on cultured hypoxic ischemic hippocampal neurons of rats.The mechanisms may be related with resisting apoptosis and caspase related pathway.

Key words: losartan, hypoglycemia anoxia, apoptosis

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