神经药理学报 ›› 2011, Vol. 1 ›› Issue (5): 19-26.

• 研究论文 • 上一篇    下一篇

黄芩茎叶总黄酮预处理对缺血再灌注损伤神经元凋亡蛋白表达和超微结构的影响

赵淑敏,孔维,张树峰,陈萌,郑小影,孔祥玉   

  1. 承德医学院脊髓损伤与修复研究室,承德,067000,中国
  • 出版日期:2011-10-26 发布日期:2013-03-24
  • 通讯作者: 孔祥玉,男,教授,硕士生导师;研究方向:中枢神经损伤与修复的研究;Email:kongxiangyu58@ 163.com
  • 作者简介:赵淑敏,女,硕士;研究方向:中枢神经损伤与修复的研究;Email:zhaoshumin-2008@163.com
  • 基金资助:

    河北省科技厅科技攻关项目(No.07276101D-46),河北省教育厅资助项目(No.2005227)

The Effects of Stem-leaf Total Flavonoid on the Apoptosis Protein Expression and Ultrastructural Changes of Ischemia Reperfusion Damaged Neuron

ZHAO Shu-min,KONG Wei,ZHANG Shu-feng,CHEN Meng,ZHENG Xiao-ying,KONG Xiang-yu     

  1. Department of spinal cord injury and rehabilitation, Chengde medical college, Chengde, 067000, China
  • Online:2011-10-26 Published:2013-03-24
  • Contact: 孔祥玉,男,教授,硕士生导师;研究方向:中枢神经损伤与修复的研究;Email:kongxiangyu58@ 163.com
  • About author:赵淑敏,女,硕士;研究方向:中枢神经损伤与修复的研究;Email:zhaoshumin-2008@163.com
  • Supported by:

    河北省科技厅科技攻关项目(No.07276101D-46),河北省教育厅资助项目(No.2005227)

摘要: 目的:探讨黄芩茎叶总黄酮(Scutellaria baicalensis Stem-leaf Total Flavonoid,SSTF)预处理对大鼠缺血再灌注损伤神经元的保护作用及其机制。方法:采用不同剂量SSTF预处理实验大鼠,制备局灶性脑缺血再灌注模型,参照Zea Longa 5分制评分标准进行神经功能缺损评分,氯化三苯四氮唑(Triphenytetrazolium chloride,TTC)染色法观测大鼠脑组织梗塞体积,免疫组化法检测大脑神经元凋亡基因蛋白的表达,电镜下观察大脑神经元超微结构损伤变化。结果:不同剂量的SSTF可不同程度减轻神经功能缺损;明显上调Bcl-2基因蛋白表达,下调Bax蛋白表达;神经元各种细胞器特别是线粒体损伤减轻,且随剂量加大改善越明显。结论:SSTF预处理可减轻缺血再灌注所致的神经元损伤,具有预防性保护作用,其机制可能与抑制细胞凋亡有关。

关键词: 黄芩茎叶总黄酮, 缺血再灌注, 神经元损伤, 细胞凋亡, Bcl-2, Bax

Abstract: Objective: To investigate the protective effect of Scutellaria baicalensis Stem-leaf Total Flavonoid on ischemia reperfusion damaged neurons in rats and its mechanism. Methods: the rat model of focal ischemia reperfusion was prepared after pretreatment with different doses of SSTF. The neurological function deficit was evaluated according to the Zea Longa 5-grade marking system; the brain infarction volume was measured by Triphenytetrazolium chloride(TTC)staining methods, while the immunohistochemical method was used to detect brain neuronal apoptotic gene expression. The ultrastructural damage changes of the cerebral neurons were observed under the electron microscope. Results: The neurological function deficit was alleviated by different doses of SSTF, with the Bcl-2 protein expression up-regulated and Bax expression down-regulated. The damage of organelles, especially the mitochondria of the neuron was significantly reduced. Conclusions: SSTF pretreatment can alleviate the neuronal damage incurred by ischemia reperfusion, demonstrating neuroprotective effect. The mechanism of such a neuroprotection may involve prohibition of the apoptosis of the neurons.

Key words: scutellaria baicalensis stem-leaf total flavonoid (SSTF), ischemia reperfusion, neuron damage, Apoptosis, Bcl-2, Bax

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