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中华脑科疾病与康复杂志(电子版) ›› 2017, Vol. 07 ›› Issue (01) : 26 -31. doi: 10.3877/cma.j.issn.2095-123X.2017.01.007

所属专题: 总编推荐 文献

基础研究

远隔缺血后适应对血管性认知功能损害小鼠模型白质的保护作用
王回1, 石晶2, 卞合涛2, 姬晓昙2, 王红娟2, 徐扬2, 闫中瑞2,()   
  1. 1. 272011 山东济宁,山东省医学科学院附属济宁市第一人民医院神经内科;250022 济南,济南大学山东省医学科学院医学与生命科学学院
    2. 272011 山东济宁,山东省医学科学院附属济宁市第一人民医院神经内科
  • 收稿日期:2016-08-10 出版日期:2017-02-01
  • 通信作者: 闫中瑞
  • 基金资助:
    国家自然科学基金(81301012)

Protective effects of remote ischemic post conditioning on white matte in a mouse model of vascular cognitive impairment

Hui Wang1, Jing Shi2, Hetao Bian2, Xiaotan Ji2, Hongjuan Wang2, Yang Xu2, Zhongrui Yan2,()   

  1. 1. Department of Neurology, Jining NO.1 People′s Hospital Affiliated Shandong Academy of Medical Sciences, Jining 272011, China; School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250022, China
    2. Department of Neurology, Jining NO.1 People′s Hospital Affiliated Shandong Academy of Medical Sciences, Jining 272011, China
  • Received:2016-08-10 Published:2017-02-01
  • Corresponding author: Zhongrui Yan
  • About author:
    Corresponding author: Yan Zhongrui, Email:
引用本文:

王回, 石晶, 卞合涛, 姬晓昙, 王红娟, 徐扬, 闫中瑞. 远隔缺血后适应对血管性认知功能损害小鼠模型白质的保护作用[J]. 中华脑科疾病与康复杂志(电子版), 2017, 07(01): 26-31.

Hui Wang, Jing Shi, Hetao Bian, Xiaotan Ji, Hongjuan Wang, Yang Xu, Zhongrui Yan. Protective effects of remote ischemic post conditioning on white matte in a mouse model of vascular cognitive impairment[J]. Chinese Journal of Brain Diseases and Rehabilitation(Electronic Edition), 2017, 07(01): 26-31.

目的

研究远隔缺血后适应(RIPostC)对血管性认知功能损害(VCI)保护作用。

方法

将12只清洁级健康雄性C57BL/6J小鼠采用随机数字表法分为3组:假手术组(sham组,n=4),模型对照组(BCAS组,n=4)及模型-远隔缺血组(BCAS+RIPostC组,n=4)。采用双侧颈总动脉狭窄(BCAS)制作小鼠VCI动物模型。手术后14 d,BCAS+RIPostC组小鼠双侧后肢同时进行RIPostC处理,持续5 min,如此反复4次/天,持续处理2周,之后采用Morris水迷宫测试认知能力,HE染色检测各组小鼠大脑白质病理损伤情况。Western blot检测各组小鼠大脑白质组织中Beclin-1蛋白表达水平,小鼠水迷宫实验平均逃避潜伏期采用重复测量方差分析,余数据采用单因素方差分析,两两比较采用LSD-t检验。

结果

28天后水迷宫测试显示,与sham组相比,BCAS组及BCAS+RIPostC组平均逃避潜伏期延长(P>0.05),与BCAS组相比,BCAS+RIPostC组平均逃避潜伏期缩短(P>0.05)。HE染色显示RIPostC可以改善BCAS所致脑白质损伤程度。Western blot显示与sham组相比BCAS组及BCAS+RIPostC组自噬相关蛋白Beclin-1水平的表达增加(P<0.05),BCAS+RIPostC组Beclin-1水平的表达增加更明显(P<0.05)。

结论

RIPostC治疗可以减轻BCAS所致脑白质损伤,具有神经保护作用,该保护作用可能与自噬途径有关。

Objective

To investigate the protective effect of limb remote ischemic postconditioning (RIPostC) on vascular cognitive impairment (VCI).

Methods

According to random number table, twelve healthy male C57BL / 6J mice were randomly divided into 3 groups: sham operation group (sham group, n=4), model control group (BCAS group, n= 4) and model-distal ischemia group (BCAS + RIPostC group, n=4). The bilateral carotid artery stenosis (BCAS) was used to produce mice model. Two weeks after the BCAS surgery, BCAS + RIPostC mice were treated with RIPostC at the same time for 5 minutes, repeated 4 times a day for 2 weeks. And morris water maze test was used to test the cognitive function. HE staining was used to detect pathological changes of white matter in each group at the same time. The expression of Beclin-1 protein in the white matter was detected by Western blot.The repeated measurement ANOVA was used to analyse verage escape latency of mice. The remaining data were analyzed by one-way ANOVA, LSD-t test was used to compare two groups.

Results

Twenty eight days later , The water maze test showed that the BCAS group and the BCAS + RIPostC group had a longer escape latency than the BCAS group(P>0.05). Compared with the sham group, The mean escape latency of RIPostC group was shortened(P>0.05). HE staining showed that RIPostC could improve the degree of white matter damage induced by BCAS. Western blot showed that the expression of Beclin-1 in BCAS group and BCAS + RIPostC group was significantly higher than that in sham group (P <0.05), and the expression of Beclin-1 in BCAS + RIPostC group increased more significantly (P <0.05).

Conclusion

RIPostC can reduce the damage of brain white matter caused by BCAS, and the neuroprotective effect of RIPostC may be related to the autophagy pathway.

图1 术后28d各组定位航行实验穿过平台潜伏期(s)
图2 术后28d各组空间探索实验穿过平台次数
图3 术后28d各组空间探索实验游泳轨迹(A:sham组,B:BCAS组,C:BCAS+RIPcost组)
图4 各组小鼠脑白质HE染色结果(X200)
图5 Western blot检测各组自噬相关蛋白Beclin-1的表达
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