中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (29): 4675-4680.doi: 10.3969/j.issn.2095-4344.1812

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

脊髓损伤后调控星形胶质细胞和小胶质细胞活化的电针技术

潘伟滨1,林晓敏1,范  筱2   

  1. 1漳州卫生职业学院,福建省漳州市  363000;2青岛市市立医院,山东省青岛市  266011
  • 修回日期:2019-05-09 出版日期:2019-10-18 发布日期:2019-10-18
  • 通讯作者: 范筱,博士,主治医师,青岛市市立医院,山东省青岛市 266011
  • 作者简介:潘伟滨,男,1983年生,福建省漳州市人,汉族,2007年福建中医学院毕业,讲师,主要从事针灸推拿研究。
  • 基金资助:

    福建省中青年教师教育科研社科项目(社科)(JAS161084),项目负责人:潘伟滨

Electroacupuncture regulates activation of astrocytes and microglia after spinal cord injury

Pan Weibin1, Lin Xiaomin1, Fan Xiao2   

  1. 1Zhangzhou Health Vocational College, Zhangzhou 363000, Fujian Province, China; 2Qingdao Municipal Hospital, Qingdao 266011, Shandong Province, China
  • Revised:2019-05-09 Online:2019-10-18 Published:2019-10-18
  • Contact: Fan Xiao, MD, Attending physician, Qingdao Municipal Hospital, Qingdao 266011, Shandong Province, China
  • About author:Pan Weibin, Lecturer, Zhangzhou Health Vocational College, Zhangzhou 363000, Fujian Province, China
  • Supported by:

    the Social Science Project of Education Research for Young and Middle-Aged Teachers of Fujian Province, No. JAS161084 (to PWB)

摘要:

文章快速阅读:

文题释义:
胶质细胞:
在神经系统内广泛存在,包括星形胶质细胞、小胶质细胞和少突胶质细胞等,其中星形胶质细胞和小胶质细胞与炎症的关系十分密切。星形胶质细胞在生理状态下处于静息状态,脊髓损伤后可被激活而出现增生、肥大并进入增殖状态,发生反应性星形胶质细胞增生,导致胶质瘢痕形成和介导炎症。同时,小胶质细胞作为神经系统固有免疫细胞,对炎症具有重要的激发作用和调控作用。
胶质纤维酸性蛋白:是星形胶质细胞的骨架蛋白,被认为是星形胶质细胞的典型标记物,其表达量越高提示星形胶质细胞状态越活跃、增殖越多。

 

摘要
背景:
目前的临床试验证实,电针对脊髓损伤引起的运动功能障碍、感觉功能障碍及尿潴留等并发症具有良好的治疗效果,但有关电针治疗脊髓损伤的相关作用机制尚不十分明确。
目的:观察电针对脊髓损伤后星形胶质细胞和小胶质细胞活化的调控作用,探讨电针治疗脊髓损伤的相关作用机制。
方法:将36只SD大鼠(上海斯莱克实验动物公司提供)随机分为假手术组、模型组、电针组,每组12只:假手术组仅行椎板切除,模型组和电针组制备T9-T11脊髓损伤模型,电针组术后每天双侧肝俞穴、脾俞穴给予电针干预30 min,连续干预7 d。7 d后取各组大鼠腹主动脉血与损伤部位脊髓组织,ELISA法检测血清中白细胞介素1β、白细胞介素6和白细胞介素18质量浓度,尼氏染色观察神经元尼氏体形态,免疫荧光法检测ED-1和胶质纤维酸性蛋白表达,Western blot检测ED-1蛋白和胶质纤维酸性蛋白表达情况。实验获得青岛市市立医院医学伦理委员会批准,批准号:QDSLYY2018-18。
结果与结论:①与假手术组比较,模型组、电针组白细胞介素1β、白细胞介素6和白细胞介素18质量浓度明显增高(P < 0.05);与模型组比较,电针组上述炎性因子质量浓度明显降低(P < 0.05);②假手术组神经元形态正常;模型组神经元受损,部分神经元溶解、液化并形成较多空洞,尼氏体破碎,形态细小,数量少;电针组神经元形态较模型组有所改善;③免疫荧光显示与假手术组比较,模型组、电针组ED-1蛋白和胶质纤维酸性蛋白阳性表达增多(P < 0.05);与模型组比较,电针组2种蛋白阳性表达减少(P < 0.05);④Western blot检测显示与假手术组比较,模型组、电针组胶质纤维酸性蛋白和ED-1蛋白表达升高(P < 0.05);与模型组比较,电针组2种蛋白表达降低(P < 0.05);⑤结果表明,电针可抑制脊髓损伤后星形胶质细胞和小胶质细胞活化,抑制炎症反应,有利于损伤后神经元修复。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0002-7366-0603(潘伟滨)

关键词: 脊髓损伤, 电针, 中医药, 反应性星形胶质细胞增生, 星形胶质细胞, 小胶质细胞, 炎症, 神经修复

Abstract:

BACKGROUND: Current clinical trials have confirmed that electroacupuncture has a therapeutic effect on motor dysfunction, sensory dysfunction and urinary retention due to spinal cord injury, but the mechanism of electroacupuncture in treating spinal cord injury is still unclear.
OBJECTIVE: To observe the effect of electroacupuncture on the activation of astrocytes and microglia after spinal cord injury and to explore the mechanism of electroacupuncture in the treatment of spinal cord injury.
METHODS: Thirty-six Sprague-Dawley rats (Provided by Shanghai Slack Laboratory Animal Company, China) were randomly divided into sham operation group, model group and electroacupuncture group, with 12 rats in each group. The sham operation group was only treated with laminectomy, and the other two groups were prepared for the spinal cord injury model (T9-T11). Electroacupuncture group received electroacupuncture at Ganyu and Shenyu on both sides for 30 minutes every day for 7 continuous days. Abdominal aortic blood and spinal cord tissue at injured sites were taken from the rats in each group after 7 days of intervention. ELISA was used to detect the mass concentration of interleukin-1β, interleukin-6 and interleukin-18 in the venous blood of rats. Nissl’s staining was used to observe the neurons morphology. The expression of ED-1 and glial fibrillary acidic protein was detected by immunofluorescence, and the protein expression of ED-1 and glial fibrillary acidic protein was detected by western blot. The study was approved by the Medical Ethics Committee of Qingdao Municipal Hospital (approval No. QDSLYY2018-18).
RESULTS AND CONCLUSION: (1) Compared with the sham operation group, the mass concentration of interleukin-1β, interleukin-6 and interleukin-18 in the model group and electroacupuncture group increased significantly (P < 0.05), and the mass concentration of above inflammatory factors in the electroacupuncture group decreased significantly as compared with the model group (P < 0.05). (2) Neurons in the sham operation group were normal in morphology. Neurons in the model group were damaged, and some neurons dissolved and liquefied with more holes. Nissl body was broken and reduced in number and size. Neurons in the electroacupuncture group were better than that in the model group. (3) Compared with the sham operation group, the positive expression of glial fibrillary acidic protein and ED-1 in the model and electroacupuncture groups increased significantly (P < 0.05). Compared with the model group, the positive expression of above two proteins in the electroacupuncture group decreased significantly (P < 0.05). (4) Western blot results showed that the expression of glial fibrillary acidic protein and ED-1 protein in the model and electroacupuncture groups was higher than that in the sham operation group, while the expression of these two proteins in the electroacupuncture group was lower than that in the model group (P < 0.05). In conclusion, electroacupuncture could inhibit the activation of astrocytes and microglia after spinal cord injury, thereby inhibiting inflammatory response and facilitating the repair of injured neurons.

Key words: spinal cord injury, electroacupuncture, traditional Chinese medicine, reactive astrocyte proliferation, astrocyte, microglia, inflammation, nerve repair

中图分类号: