中国神经再生研究(英文版) ›› 2014, Vol. 9 ›› Issue (18): 1709-1715.doi: 10.4103/1673-5374.141808

• 原著:周围神经损伤修复保护与再生 • 上一篇    下一篇

依达拉奉可促进机械性损伤周围神经功能的恢复

  

  • 收稿日期:2014-07-17 出版日期:2014-09-26 发布日期:2014-09-26
  • 基金资助:

    中国国家自然科学基金项目(30901515);大连市科学技术基金项目(2009J22DW029)

Edaravone promotes functional recovery after mechanical peripheral nerve injury

Teng Zhang, Zhengwei Li, Jianli Dong, Feng Nan, Tao Li, Qing Yu   

  1. Department of Orthopedics, the Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
  • Received:2014-07-17 Online:2014-09-26 Published:2014-09-26
  • Contact: Feng Nan, M.D., Department of Orthopedics, the Second Affiliated Hospital of Dalian Medical University, Dalian 116023, Liaoning Province, China, nanf1974@163.com.
  • Supported by:

    This study was supported by the National Natural Science Foundation of China, No. 30901515; Dalian Municipal Science and Technology Project Foundation in China, No. 2009J22DW029.

摘要:

依达拉奉可以减轻缺血再灌注诱导的周围神经损伤,但对机械性因素引起的周围神经损伤治疗的效果及机制不甚明了。实验以止血钳钝性钳夹大鼠的坐骨神经建立周围神经损伤模型,连续2周腹腔注射3mg/kg依达拉奉干预。结果显示依达拉奉干预的周围神经机械损伤模型大鼠坐骨神经功能指数明显升高,且坐骨神经中丙二醛含量下降,超氧化物歧化酶活性上升,同时L4-6节段脊髓前角细胞中抗凋亡蛋白Bcl-2的表达增加,促凋亡蛋白Bax的表达下降增加。表明依达拉奉通过缓解自由基损伤和抑制脂质过氧化,调节凋亡相关蛋白的表达,从而对由于机械性因素损伤周围神经可起神经保护作用。

关键词: 神经再生, 周围神经损伤, 机械损伤, 坐骨神经损伤, 依达拉奉, 脂质过氧化, 自由基损伤, 丙二醛, 超氧化物歧化酶, Bcl-2, Bax

Abstract:

Edaravone has been shown to reduce ischemia/reperfusion-induced peripheral nerve injury. However, the therapeutic effect of edaravone on peripheral nerve injury caused by mechanical factors is unknown. In the present study, we established a peripheral nerve injury model by crushing the sciatic nerve using hemostatic forceps, and then administered edaravone 3 mg/kg intraperitoneally. The sciatic functional index and superoxide dismutase activity of the sciatic nerve were increased, and the malondialdehyde level was decreased in animals in the edaravone group compared with those in the model group. Bcl-2 expression was increased, but Bax expression was decreased in anterior horn cells of the L4–6 spinal cord segments. These results indicated that edaravone has a neuroprotective effect following peripheral nerve injury caused by mechanical factors through alleviating free radical damage to cells and inhibiting lipid peroxidation, as well as regulating apoptosis-related protein expression.

Key words: nerve regeneration, peripheral nerve injury, mechanical injury, sciatic nerve injury, edaravone, lipid peroxidation, free radical damage, malondialdehyde, superoxide dismutase, Bcl-2, Bax, NSFC grant, neural regeneration