中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (31): 4986-4991.doi: 10.3969/j.issn.2095-4344.1459

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

补阳还五汤对脊髓损伤后Ⅰ型胶原蛋白和Ⅳ型胶原蛋白表达的影响

林晓敏1,潘伟滨1,吴玉琼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  266000)
  • 收稿日期:2019-04-27 出版日期:2019-11-08 发布日期:2019-11-08
  • 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 266000
  • 作者简介:林晓敏,女,1990年生,福建省平和县人,汉族,2017年福建中医药大学毕业,硕士,助教,主要从事康复方面研究。
  • 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

Effects of Buyang Huanwu decoction on the expression of collagen type I and IV after spinal cord injury 

Lin Xiaomin1, Pan Weibin1, Wu Yuqiong1, Fan Xiao2   

  1.  (1Zhangzhou Health Vocational College, Zhangzhou 363000, Fujian Province, China; 2Qingdao Municipal Hospital, Qingdao 266000, Shandong Province, China)
  • Received:2019-04-27 Online:2019-11-08 Published:2019-11-08
  • Contact: Fan Xiao, MD, Attending physician, Qingdao Municipal Hospital, Qingdao 266000, Shandong Province, China
  • About author:Lin Xiaomin, Master, Assistant lecturer, Zhangzhou Health Vocational College, Zhangzhou 363000, Fujian Province, China
  • Supported by:

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

摘要:

文章快速阅读:

文题释义:

Ⅰ型胶原蛋白:是由成骨细胞分泌的一种重要的、基本的蛋白质,长度约300 nm,直径约1.5 nm,呈棒状,由3条肽链组成,其中有2条α(Ⅰ)链,1条α(Ⅱ)链,其参与构成骨架结构并发挥力学稳定作用,促进损伤后血管和微血管重建,在脊髓损伤的修复中起到重要作用。
补阳还五汤:为著名的中医方剂,由黄芪、赤芍、当归、地龙、川芎、桃仁和红花药物组成,具有补气,活血,通络的功效。此方对于气虚血瘀所致的半身不遂有一定疗效,临床常用于治疗脑血管意外后遗症、小儿麻痹后遗症,以及脊髓损伤等原因引起的肢体功能障碍。
摘要
背景:
研究表明,Ⅰ型胶原蛋白和Ⅳ型胶原蛋白有利于脊髓损伤后肢体运动功能的恢复。
目的:通过观察脊髓损伤大鼠肢体运动功能变化及Ⅰ型胶原蛋白和Ⅳ型胶原蛋白的表达,探讨补阳还五汤对脊髓损伤后大鼠肢体运动功能改善的可能机制。
方法:实验方案经福建中医药大学动物实验伦理委员会批准[批准号为SYXK(闽)2013-005]。将54只大鼠随机分为3组:假手组(n=18)、模型组(n=18)和补阳还五汤组(n=18)。假手术组切除椎板后立即缝合伤口,其余2组切除椎板后应用NYU脊髓打击器建立脊髓损伤模型。造模后第1天开始补阳还五汤组给予补阳还五汤1 mL灌胃,模型组和假手术组术后蒸馏水1 mL灌胃。干预后1,3,5,7 d对各组大鼠进行BBB肢体运动功能评分;干预7 d后取材,尼式染色观察脊髓神经元形态和免疫组织化学检测Ⅰ型胶原蛋白和Ⅳ型胶原蛋白表达;电镜观察脊髓髓鞘超微结构,Western blot检测Ⅰ型胶原蛋白和Ⅳ型胶原蛋白的蛋白表达量。
结果与结论:①干预第5天后,补阳还五汤组的BBB肢体运动功能评分显著高于同期的模型组(P < 0.05);②尼式染色显示补阳还五汤组的细胞形态较为完整,细胞水肿较轻,瘀血面积较小,神经元恢复情况好于模型组;③电镜实验发现补阳还五汤组的髓鞘形态较模型组完整,水肿情况较轻,与尼式染色结果一致;④免疫组织化学显示补阳还五汤组的Ⅰ型胶原蛋白和Ⅳ型胶原蛋白的表达量均较模型组显著增多(P < 0.05);⑤Western blot显示补阳还五汤组的Ⅰ型胶原蛋白和Ⅳ型胶原蛋白的表达量均较模型组显著增多(P < 0.05);⑥结果说明,补阳还五汤能够改善脊髓损伤后大鼠的肢体运动功能障碍,其机制可能与增加Ⅰ型胶原蛋白和Ⅳ型胶原蛋白表达有关。

关键词: 脊髓损伤, 补阳还五汤, Ⅰ型胶原蛋白, Ⅳ型胶原蛋白, 髓鞘, 超微结构

Abstract:

BACKGROUND: Collagen type I and IV are shown to be beneficial for limb locomotion recovery after spinal cord injury.
OBJECTIVE: To explore the mechanism of Buyang Huanwu decoction on the rehabilitation of limb locomotion of rats after spinal cord injury by observing the changes of limb locomotion and expression levels of collagen type I and IV.
METHODS: The study was approved by the Experimental Animal Ethics Committee of Fujian University of Traditional Chinese Medicine, approval number: SYXK2013-005. Fifty-four Sprague-Dawley rats were divided into three groups, sham, model and Buyang Huanwu decoction groups (n=18/group). Rats in the sham group underwent the laminectomy and rats in the other groups were used for establishing the spinal cord injury model by NYU impactor. The rats in the Buyang Huanwu decoction group, and sham and model groups were administrated 1 mL of Buyang Huanwu decoction and normal saline via gavage, respectively, at 1 day post-injury. Basso, Beattie, and Bresnahan limb locomotion scores were evaluated at 1, 3, 5 and 7 days after injury. At 7 days after injury, samples were removed for Nissl staining to observe the morphology of spinal cord neurons and the expression levels of collagen type I and IV were detected by immunohistochemistry. The ultrastructures of medullary sheath were observed under transmission electron microscope. The expression levels of collagen type I and IV proteins were detected by western blot assay.
RESULTS AND CONCLUSION: (1) The Basso, Beattie, and Bresnahan limb locomotion scores from the fifth day after modeling in the Buyang Huanwu decoction group were significantly higher than those in the model group (P < 0.05). (2) Nissl staining showed that in the Buyang Huanwu decoction group, the structure of neurons was complete, cell edema was slight, hemostasis area was small, and the recovery of neurons was better than that in the model group. (3) Transmission electron microscope showed that the structure of myelin sheath in the Buyang Huanwu decoction group was better than that in the model group, and with slight edema, which were similar with the Nissl staining results. (4) Immunohistochemistry results showed that the expression levels of collagen type I and IV in the Buyang Huanwu decoction group were significantly higher than those in the model group (P < 0.05). (5) Western blot assay results showed that expressions of collagen type I and IV proteins in the Buyang Huanwu decoction group were significantly higher than those in the model group (P < 0.05). (6) In summary, Buyang Huanwu decoction can promote the rehabilitation of limb locomotion of rats after spinal cord injury, possibly by up-regulating the expressions of collagen type I and IV.

Key words: spinal cord injury, Buyang Huanwu decoction, collagen type I, collagen type IV, medullary sheath, ultrastructure

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