中国神经再生研究(英文版) ›› 2017, Vol. 12 ›› Issue (9): 1519-1528.doi: 10.4103/1673-5374.215264

• 原著:脊髓损伤修复保护与再生 • 上一篇    下一篇

中药复方脊髓康促进脊髓损伤后神经功能恢复和神经营养因子的表达

  

  • 收稿日期:2017-08-22 出版日期:2017-09-15 发布日期:2017-09-15
  • 基金资助:

    国家自然科学基金(81573997);江苏省高校自然科学基金项目(15kjd360001);江苏省自然科学基金(bk2011180)

Jisuikang, a Chinese herbal formula, increases neurotrophic factor expression and promotes the recovery of neurological function after spinal cord injury

 Yang Guo1, Yong Ma1, 2, Ya-lan Pan1, Su-yang Zheng1, Jian-wei Wang3, Gui-cheng Huang1   

  1. Nanjing University of Chinese Medicine, Nanjing, Jiangsu Province, China
    2 Department of Traumatology & Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu Province, China
    3 Department of Traumatology & Orthopedics, Wuxi Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Wuxi, Jiangsu Province, China
  • Received:2017-08-22 Online:2017-09-15 Published:2017-09-15
  • Contact: Gui-cheng Huang, M.D.,hgc@njucm.edu.cn.
  • Supported by:

    This work was partially supported by the National Natural Science Foundation of China, No. 81573997; the Natural Science Foundation for Colleges and Universities in Jiangsu Province of China, No. 15KJD360001; the Natural Science Foundation of Jiangsu Province of  China, No. BK2011180.

摘要:

 

研究表明中药复方脊髓康可抑制脂质过氧化反应,清除氧自由基,有效改善脊髓损伤后局部微环境,促进神经功能恢复,但机制尚不清楚。为此,实验设计构建改良Allen法急性脊髓损伤模型大鼠,于麻醉恢复后30 min灌胃脊髓康50,25,12.5 g/(kg.d)及泼尼松龙。以BBB评分和斜板试验见泼尼松龙组和脊髓康中剂量组大鼠在损伤后3-7 d运动功能恢复较好,且脊髓康中剂量组在损伤后14 d功能恢复最佳;以苏木精-伊红染色和透射电镜观察见在给药3-7 d后,各治疗组的神经元存活率提高,神经元及神经胶质细胞的结构更清晰,尤以泼尼松龙组和脊髓康中剂量组为最佳;以Western blot和免疫组织化学染色见各治疗组治疗7-14 d后脊髓损伤节段脑源性神经营养因子表达均保持在高水平,而脊髓损伤7 d后神经生长因子表达轻微下调。RT-PCR检测显示,泼尼松龙和脊髓康干预后均可促进大鼠脊髓损伤节段脑源性神经营养因子和神经生长因子 mRNA的表达,损伤后3-7 d,泼尼松龙组效应更高,而损伤后14 d,脊髓康中剂量组的效应更高。实验结果证实中药复方脊髓康可在脊髓损伤后长时间内上调脑源性神经营养因子和神经生长因子的表达,促进急性脊髓损伤的修复,效果与泼尼松龙相当。

 

orcid:0000-0002-7518-4073(Gui-cheng Huang)

关键词: 神经再生, 脊髓损伤, 脊髓康, 中药, 泼尼松龙, 微环境, 轴突再生, 继发性改变, 神经元凋亡, 脑源性神经营养因子, 神经生长因子

Abstract:

The Chinese medicine compound, Jisuikang, can promote recovery of neurological function by inhibiting lipid peroxidation, scavenging oxygen free radicals, and effectively improving the local microenvironment after spinal cord injury. However, the mechanism remains unclear. Thus, we established a rat model of acute spinal cord injury using a modified version of Allen’s method. Jisuikang (50, 25, and 12.5 g/kg/d) and prednisolone were administered 30 minutes after anesthesia. Basso, Beattie, and Bresnahan locomotor scale scores and the oblique board test showed improved motor function recovery in the prednisone group and moderate-dose Jisuikang group compared with the other groups at 3–7 days post-injury. The rats in the moderate-dose Jisuikang group recovered best at 14 days post-injury. Hematoxylin-eosin staining and transmission electron microscopy showed that the survival rate of neurons in treatment groups increased after 3–7 days of administration. Further, the structure of neurons and glial cells was more distinct, especially in prednisolone and moderate-dose Jisuikang groups. Western blot assay and immunohistochemistry showed that expression of brain-derived neurotrophic factor (BDNF) in injured segments was maintained at a high level after 7–14 days of treatment. In contrast, expression of nerve growth factor (NGF) was down-regulated at 7 days after spinal cord injury. Real-time fluorescence quantitative polymerase chain reaction showed that expression of BDNF and NGF mRNA was induced in injured segments by prednisolone and Jisuikang. At 3–7 days after injury, the effect of prednisolone was greater, while 14 days after injury, the effect of moderate-dose Jisuikang was greater. These results confirm that Jisuikang can upregulate BDNF and NGF expression for a prolonged period after spinal cord injury and promote repair of acute spinal cord injury, with its effect being similar to prednisolone.
 

Key words: nerve regeneration, spinal cord injury, Jisuikang, Chinese medicine, prednisolone, microenvironment, axon regeneration, secondary changes, neuronal apoptosis, brain-derived neurotrophic factor, nerve growth factor, neural regeneration