中国神经再生研究(英文版) ›› 2015, Vol. 10 ›› Issue (12): 2004-2010.doi: 10.4103/1673-5374.172319

• 原著:脑损伤修复保护与再生 • 上一篇    下一篇

强制性运动干预为何能促进脑卒中后运动功能的恢复?

  

  • 收稿日期:2015-05-09 出版日期:2015-12-30 发布日期:2015-12-30
  • 基金资助:

    国家自然科学基金(81372119)

Constraint-induced movement therapy promotes motor function recovery and downregulates phosphorylated extracellular regulated protein kinase expression in ischemic brain tissue of rats

Bei Zhang1, Qiang He1, Ying-ying Li1, Ce Li1, Yu-long Bai1, *, Yong-shan Hu1, 2, Feng Zhang3   

  1. 1 Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai, China
    2 State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
    3 Department of Rehabilitation, the Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
  • Received:2015-05-09 Online:2015-12-30 Published:2015-12-30
  • Contact: Yu-long Bai, M.D., Ph.D.,dr_baiyl@126.com.
  • Supported by:

    This work was supported by grants from the National Natural Science Foundation of China, No. 81372119 and a grant from the Science and Technology Commission of Shanghai Municipality,
    No. 12ZR1404000.

摘要:

强制性运动干预通过限制健肢及强制患肢运动,从而纠正或预防“习惯性废用”,改善患肢功能,但其分子生物学机制尚不明确。为证明此机制,实验用石膏限制大脑中动脉阻塞模型大鼠患侧肢体活动,同时设未进行运动干预治疗的模型大鼠(模型组)和假手术组进行对照。术后第22天,与模型组相比,强制性运动组前肢运动功能明显改善。Western blot检测显示强制性运动组双侧皮质和海马p-ERK蛋白表达与假手术组相近,但低于模型组。结果说明,脑缺血大鼠强制性运动后功能恢复与双侧皮质和海马内p-ERK蛋白表达下调有关。

关键词: 神经再生, 强制性运动疗法, 丝裂原活化蛋白激酶信号系统, 脑缺血, 运动, 皮质, 海马, 大脑中动脉闭塞, 平衡木, 大鼠, 国家自然科学基金, 神经再生

Abstract:

Motor function impairment is a common outcome of stroke. Constraint-induced movement therapy (CIMT) involving intensive use of the impaired limb while restraining the unaffected limb is widely used to overcome the effects of ‘learned non-use’ and improve limb function after stroke. However, the underlying mechanism of CIMT remains unclear. In the present study, rats were randomly divided into a middle cerebral artery occlusion (model) group, a CIMT + model (CIMT) group, or a sham group. Restriction of the affected limb by plaster cast was performed in the CIMT and sham groups. Compared with the model group, CIMT significantly improved the forelimb functional performance in rats. By western blot assay, the expression of phosphorylated extracellular regulated protein kinase in the bilateral cortex and hippocampi of cerebral ischemic rats in the CIMT group was significantly lower than that in the model group, and was similar to sham group levels. These data suggest that functional recovery after CIMT may be related to decreased
expression of phosphorylated extracellular regulated protein kinase in the bilateral cortex and hippocampi.
 

Key words: nerve regeneration, constraint-induced movement therapy, mitogen-activated protein kinase signaling system, brain ischemia, locomotion, recovery, cortex, hippocampus, middle cerebral artery occlusion, foot fault test, balance beam walking, rats, NSFC grants, neural regeneration