中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (16): 2324-2332.doi: 10.3969/j.issn.2095-4344.2016.16.006

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

外科生物补片修复退变椎间盘纤维环

朱 旭1,马  原1,孟祥玉2,田慧中1   

  1. 新疆医科大学第六附属医院,1脊柱外一科,2微创脊柱外科,新疆维吾尔自治区乌鲁木齐市  830000
  • 收稿日期:2016-02-25 出版日期:2016-04-15 发布日期:2016-04-15
  • 通讯作者: 马原,硕士,主任医师,副教授,新疆医科大学第六附属医院脊柱外一科,新疆维吾尔自治区乌鲁木齐市 830000
  • 作者简介:朱旭,男,汉族,1987年生,新疆医科大学在读硕士,医师。
  • 基金资助:

     新疆维吾尔自治区自然科学基金资助项目(2014211C135)

Surgical biomaterials to repair the ruptured annulus fibrosus due to intervertebral disc degeneration

Zhu Xu1, Ma Yuan1, Meng Xiang-yu2, Tian Hui-zhong1   

  1. 1First Department of Spine Surgery, 2Department of Minimally Invasive Spine Surgery, Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • Received:2016-02-25 Online:2016-04-15 Published:2016-04-15
  • Contact: Ma Yuan, Master, Chief physician, Associate professor, First Department of Spine Surgery, Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • About author:Zhu Xu, Studying for master’s degree, Physician, First Department of Spine Surgery, Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the Natural Science Foundation of Xinjiang Uygur Autonomous Region, No. 2014211C135

摘要:

文章快速阅读:

 

文题释义:
外科生物补片:广泛应用于修复缺损的硬脑(脊)膜等组织,具有张力强、无粘连、来源广泛等多项优势采用聚氨酯膜复合材料修复退变椎间盘纤维环,对修复椎间盘承载负荷、扭曲力、维持椎间隙高度等具有一定的作用。
椎间盘退行性病变:是指椎间盘自然老化、退化的病理生理过程。随着年龄的增长,过度的活动和超负荷的承载,使椎间盘加快出现老化,严重的椎间盘退行性病变可以引起腰腿痛甚至神经损害,影响工作能力和生活质量。


 

背景:近年来国内外采用实验动物构造腰椎间盘退变模型,结合组织工程、细胞工程、基因工程等技术手段修复退变椎间盘已成为当前研究热点。
目的:观察病探索外科生物补片对兔椎间盘纤维环缺损修复作用的生物学效应。
方法:随机选取兔的L3-4,L4-5,L5-6椎间盘,分别设为空白组、对照组及实验组,实验组做椎间盘纤维环切开造模及外科补片修补;对照组仅做椎间盘纤维环切开建立椎间盘退变模型;空白组仅显露相应椎间盘。随机选取6只兔分别于术前,术后1,2,4,8,12周行腰椎X线及MRI检查;于术前选取1只兔,术后1,2,4,8,12周每周选取3只兔,处死后获取相应椎间盘组织行苏木精-伊红染色和Ⅱ型胶原免疫组织化学染色,观察外科生物补片对早期椎间盘退变的干预效果。
结果与结论:①椎间盘高度指数百分比:术后1,2,4周,对照组和实验组椎间盘高度指数百分比随时间进展呈持续减小趋势;②影像学和组织学变化:术后2周,实验组和对照组MRI T2WI信号强度、苏木精-伊红染色分级评分明显升高(P < 0.05),实验组和对照组苏木精-伊红染色显示髓核细胞随术后时间推移逐渐减少,纤维环缺损处逐步被肉芽、纤维组织填充,生物膜与外层纤维环贴合紧密;③Ⅱ型胶原免疫组织化学染色:术后随时间延长,实验组和对照组髓核组织染色逐渐由阳性转为阴性;④结果证实:纤维环切开法造模可引起椎间盘早期剧烈的退变;外科生物补片与外层纤维环组织良好的贴合并有封堵纤维环缺损阻止髓核进一步突出的作用;但该法并不能抑制椎间盘持续退变。

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程
ORCID: 0000-0002-0014-7411(马原)

关键词: 生物材料, 骨生物材料, 外科生物材料, 椎间盘退变, 椎间盘高度指数, 磁共振T2加权像, 免疫组织化学染色, 新疆维吾尔自治区自然科学基金

Abstract:

BACKGROUND: In recent years, animal models of lumbar disc degeneration have been popularized to explore the effect of tissue engineering, cell engineering and genetic engineering technologies on intervertebral disc degeneration.

OBJECTIVE: To investigate the influence of biological patches on rabbit anulus fibrosus repair.
METHODS: L3-4, L4-5, L5-6 segments from rabbits were randomly divided into normal control group (the intervertebral disc was exposed correspondingly), control group (the annulus fibrosus was only cut with a surgical scalpel) and experimental group (the annulus fibrosus was cut and sutured with the surgical biomaterial). Six rabbits were selected randomly to take the lumbar X-ray and MRI preoperatively and 1, 2, 4, 8, 12 weeks postoperatively; one rabbit was chosen preoperatively and three rabbits selected respectively at 1, 2, 4, 8, 12 weeks postoperatively to execute hematoxylin-eosin and type II collagen immunohistochemistry.
RESULTS AND CONCLUSION:At postoperative 1, 2 and 4 weeks, the disc height index decreased significantly in the control and experimental groups. MRI and histopathological examination showed that the T2WI signal intensity and hematoxylin-eosin grading were both increased significantly in the control and experimental groups at 2 weeks after surgery (P < 0.05). With time, the number of nucleus pulposus cells gradually reduced in the control and experimental groups. Annulus fibrosus defects were filled with granulation and fibrous tissues, and the biofilm was tightly fused with the annulus fibrosus. Findings from the type II collagen immunohistochemical staining showed that the histological staining of the nucleus pulposus was gradually changed from positive to negative in the experimental and control groups. Therefore, cutting the annulus fibrosus can lead to severe disc degeneration at early period, and surgical biomaterials can be integrated with the annulus fibrosus well to seal annulus fibrosus defects and further prevent nucleus pulposus protrusion. However, this approach cannot restrain the continuous process of disc degeneration.
中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Tissue Engineering, Intervertebral Disk, Biocompatible Materials