中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (6): 871-876.doi: 10.3969/j.issn.2095-4344.2017.06.009

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

Ⅱ型胶原修饰脱细胞真皮基质胶原膜修复关节软骨缺损

张柏青1,张仲文2,孙  磊3,江  健3,吴  瑕4 
  

  1. 1武警北京市总队第三医院,北京市  100141;2武警总医院,北京市  100039;3北京积水潭医院,北京市  100035;4中国质量认证中心,北京市  100070
  • 收稿日期:2016-12-18 出版日期:2017-02-28 发布日期:2017-03-16
  • 通讯作者: 张仲文,主任医师,武警总医院骨四科,北京市 100035
  • 作者简介:张柏青,男,1982年生,江苏省南通市人,汉族,2008年河北医科大学毕业,硕士,主治医师,主要从事创伤骨科研究。
  • 基金资助:

    中国人民武装警察部队总医院课题(WZ2012016)

Collagen type II-modified acellular dermal membrane promotes the repair of cartilage defects

Zhang Bai-qing1, Zhang Zhong-wen2, Sun Lei3, Jiang Jian3, Wu Xia4
  

  1. 1Third Hospital of Beijing Armed Police Corps, Beijing 100141, China; 2General Hospital of Chinese Armed Police Corps, Beijing 100039, China; 3Beijing Jishuitan Hospital, Beijing 100035, China; 4China Quality Certification Center, Beijing 100070, China
  • Received:2016-12-18 Online:2017-02-28 Published:2017-03-16
  • Contact: Zhang Zhong-wen, Chief physician, General Hospital of Chinese Armed Police Corps, Beijing 100039, China
  • About author:Zhang Bai-qing, Master, Attending physician, Third Hospital of Beijing Armed Police Corps, Beijing 100141, China
  • Supported by:

    the Project of General Hospital of Chinese Armed Police Corps, No. WZ2012016

摘要:

文章快速阅读:

 

文题释义:
脱细胞真皮基质胶原膜
:采用小牛皮为原料,取其真皮基质,因其自身的胶原纤维和弹性纤维互相交织在一起,埋于基质内。其内分布着各种结缔组织细胞和大量的胶原纤维弹性纤维,使脱细胞真皮基质胶原膜既有弹性又有韧性,行脱细胞及相关处理后保留其自身孔隙率,并且拥有合适的降解率,适合充当软骨修复过程中的支架材料。
Ⅱ型胶原修饰脱细胞真皮基质胶原膜:作为软骨细胞特征性分泌基质,对软骨细胞的表型的表达及生长有非常重要的作用,通过Ⅱ型胶修饰脱细胞真皮基质胶原膜能最大限度模拟软骨细胞生长环境,能够促进其正常表达,使修复过程透明软骨化,并且随着修复的进程,自然的降解,起到修复过程中临时细胞外基质的作用。

背景:前期实验发现,以小牛皮为原料的脱细胞真皮基质胶原膜修复软骨缺损,存在修复时间长、降解速度快等不足。
目的:观察Ⅱ型胶原修饰后脱细胞真皮基质胶原膜修复兔软骨缺损的效果。
方法:将新西兰乳兔软骨细胞接种于Ⅱ型胶原修饰脱细胞真皮基质胶原膜上,接种3,7,14 d进行扫描电镜观察。在24只新西兰大白兔双侧膝关节股骨髁部制作软骨缺损模型,随机分3组,空白对照组不作任何处理,对照组缺损部位植入软骨细胞-脱细胞真皮基质胶原膜,实验组缺损部位植入软骨细胞-Ⅱ型胶原修饰脱细胞真皮基质胶原膜,术后6,12周进行组织学Wakitani评分及Ⅱ型胶原免疫组织化学染色。
结果与结论:①细胞在支架材料的内部生长良好,贴附较佳;②实验组术后6,12周的组织学Wakitani评分均低于对照组、空白对照组(P < 0.05);③术后6,12周,实验组Ⅱ型胶原免疫细胞化学染色阳性最强,可见棕黄色颗粒分布于细胞质内;对照组也可见Ⅱ型胶原免疫细胞化学染色阳性,空白对照组未着色;④结果表明,Ⅱ型胶原修饰脱细胞真皮基质胶原膜可促进软骨缺损的修复。

关键词: 生物材料, 软骨生物材料, 脱细胞真皮基质, 组织工程, 软骨缺损, 修饰, 软骨细胞, 修复, 载体

Abstract:

BACKGROUND: Previous study has observed that the calf acellular dermal membrane exhibits slow repair efficiency, fast degradability speed and other shortcomings in the repair of cartilage defects.
OBJECTIVE: To investigate the repair effect of the collagen type II-modified acellular dermal membrane on cartilage defects in rabbits.
METHODS: The fetal rabbit chondrocytes were seeded onto the collagen type II-modified acellular dermal membrane, and the composite was then observed under scanning electron microscope at 3, 7 and 14 days. Cartilage defect models were established on the bilateral femoral condyles of 24 New Zealand white rabbits, and these model rabbits were randomly allocated to three groups. The cartilage-acellular dermal membrane and cartilage-collagen type II-modified acellular dermal membrane were implanted into the defect regions of control and experimental groups, respectively. Those received no intervention were as blank control group. Collagen type II immunohistochemical staining and Wakitani scoring system were performed at 6 and 12 weeks postoperatively.
RESULTS AND CONCLUSION: Chondrocytes grew and adhered well in the scaffold. The Wakitani scores in the experimental group were significantly lower than those in the control and blank control groups at postoperative 6 and 12 weeks (P < 0.05). At 6 and 12 weeks postoperatively, collagen type II immunohistochemical staining was the strongest in the experimental group, with yellow and brown particles in the cytoplasm; the control group was positive for collagen type II immunohistochemical staining, while the blank control group was negative for the staining. Our findings suggest that the collagen type II-modified acellular dermal membrane is beneficial for the repair of cartilage defects.

Key words: Collagen Type II, Cartilage, Tissue Engineering

中图分类号: