解剖学报 ›› 2018, Vol. 49 ›› Issue (6): 703-707.doi: 10.16098/j.issn.0529-1356.2018.06.001

• 神经生物学 •    下一篇

大鼠脑缺血再灌注后环氧合酶-2促进E-选择素表达增多及灯盏花素的脑保护作用

杨迎春1 任占川1* 陈新骥2   

  1. 1.山西医科大学汾阳学院解剖学教研室; 2.山西医科大学汾阳学院解剖学实验室 山西 汾阳 032200
  • 收稿日期:2018-01-19 修回日期:2018-03-23 出版日期:2018-12-06 发布日期:2019-02-28
  • 通讯作者: 任占川 E-mail:yf53562018@sina.com

Cyclooxygenase-2 promoting the expression of E-selectin and the cerebral protective effects of breviscapine after cerebral ischemic-reperfusion injury in rats

YANG Ying-chun1 REN Zhan-chuan1* CHEN Xin-ji2   

  1. 1.Department of Anatomy; 2.Anatomy Laboratory, Fenyang Colleage of  Shanxi Medical University, Shanxi Fenyang 032200, China
  • Received:2018-01-19 Revised:2018-03-23 Online:2018-12-06 Published:2019-02-28
  • Contact: REN Zhan-chuan E-mail:yf53562018@sina.com

摘要:

目的 观察大鼠脑缺血再灌后环氧合酶-2(COX-2)对E-选择素(E-selectin)表达的影响及灯盏花素对COX-2及E-selectin的影响,探讨脑缺血再灌注损伤后, COX-2加重脑损伤的机制及灯盏花素的脑保护作用。 方法 48只清洁级SD大鼠随机分为假手术组、生理盐水组、SC-58125组、灯盏花素治疗组,在缺血2 h再灌注24 h时,神经功能学评分观察大鼠神经行为的变化,2,3,5-氯化三苯四氮唑(TTC)染色观察大鼠脑梗死灶体积的变化;免疫印迹法和酶联免疫吸附测定检测COX-2及E-selectin表达的变化。 结果 SC-58125组和灯盏花素治疗组神经行为学评分明显降低,脑组织梗死体积显著减小,COX-2和E-selectin的表达明显下降。 结论 脑缺血再灌注后,COX-2可能通过促进E-selectin的表达加重缺血区的炎症反应;灯盏花素可能通过抑制COX-2及E-selectin的表达而发挥脑保护作用。

关键词: 大脑, 缺血再灌注损伤, 环氧合酶-2, E-选择素, 灯盏花素, 免疫印迹法, 大鼠

Abstract:

Objective To investigate the mechanisms of cyclooxygenase-2 (COX-2) aggravating cerebral injury and the protective effects of breviscapine after cerebral ischemic-reperfusion injury, by observing the effect of COX-2 on the expression of E-selectin and the effect of breviscapine on the expression of COX-2 and E-selectin. Methods Forty-eight SD rats were randomly divided into sham group, saline group, SC-58125 group and breviscapine treatment group, at ischemia hour 2/reperfusion hour 24. Nerve function scores were used to observe the neurobehavioral changes of rats, 2,3,5-triphenyltetrazolium chloride (TTC) staining was used to assess the changes of cerebral infarction volume. Western blotting and enzyme-linked immunosorbent assay were used to detect the expression of COX-2 and E-selectin. Results In SC-58125 group and breviscapine treatment group, nerve function scores, cerebral infarction volume and COX-2 and E-selectinwere significantly decreased. Conclusion COX-2 aggravates inflammatory response of ischemia area by promoting the expression of E-selectin; breviscapine may play a protective role by inhibiting the expression of COX-2 and E-selectin.

Key words: Brain, Ischemia-reperfusion injury, Cyclooxygenase-2, E-selectin, Breviscapine, Western blotting, Rat