中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (3): 383-388.doi: 10.3969/j.issn.2095-4344.2014.03.009

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

骨组织工程三维复合支架修复兔桡骨骨缺损

叶  鹏1,马立坤1,黄文良2,佘荣峰3,田仁元1,邓  江4   

  1. 1遵义医学院,贵州省遵义市  563003;遵义医学院第三附属医院,2骨一病区,4骨科,贵州省遵义市  563003;3贵州省人民医院骨一科,贵州省贵阳市  550000
  • 出版日期:2014-01-15 发布日期:2014-01-15
  • 通讯作者: 邓江,教授,主任医师,研究生导师,遵义医学院第三附属医院骨科,贵州省遵义市 563003
  • 作者简介:叶鹏,男,1988年生,重庆市人,汉族,遵义医学院2011级骨外科在读硕士,主要从事骨关节创伤方面的研究。
  • 基金资助:

    贵州省科学技术基金项目(黔科合SY字[2010] 3101),项目名称:《SF-CS-nHA支架与基因修饰后BMSCs构建人工骨种植体的成骨作用研究;贵州省社会攻关项目(遵义市科合社字 [2010] 015号),项目名称:RGD表面修饰SF-CS-nHA材料复合携带目的基因的BMSCs成骨性能研究;贵州省省长基金项目(2011(25)),项目名称:rhBMP-2缓释系统/自体松质骨复合生物支架修复骨缺损的研究

Repairing rabbit radial bone defects with three-dimensional tissue-engineered bone composite scaffold

Ye Peng1, Ma Li-kun1, Huang Wen-liang2, She Rong-feng3, Tian Ren-yuan1, Deng Jiang4   

  1. 1 Zunyi Medical University, Zunyi 563003, Guizhou Province, China; 2 First Orthopedics Ward, 4 Department of Orthopedics, Third Affiliated Hospital of Zunyi Medical University, Zunyi 563003, Guizhou Province, China; 3 First Department of Orthopedics, Guizhou Provincial People’s Hospital, Guiyang 550000, Guizhou Province, China
  • Online:2014-01-15 Published:2014-01-15
  • Contact: Deng Jiang, Professor, Chief physician, Master’s supervisor, Department of Orthopedics, Third Affiliated Hospital of Zunyi Medical University, Zunyi 563003, Guizhou Province, China
  • About author:Ye Peng, Studying for master’s degree, Zunyi Medical University, Zunyi 563003, Guizhou Province, China
  • Supported by:

    the Science and Technology Foundation of Guizhou Province, No. [2010]3101; the Social Tackle Key Program of Guizhou Province, No. [2010]015; the Governor’s Foundation of Guizhou Province, No. 2011(25) 

摘要:

背景:前期实验构建的丝素/壳聚糖/纳米羟基磷灰石复合支架具有良好的理化性质。
目的:观察丝素/壳聚糖/纳米羟基磷灰石三维复合支架修复兔桡骨大段骨缺损的效果。
方法:取新西兰大白兔36只,建立右侧桡骨长段骨缺损模型,随机均分为3组,实验组于骨缺损处植入丝素/壳聚糖/纳米羟基磷灰石复合支架,对照组于骨缺损处植入丝素/壳聚糖复合支架,空白对照组造模后不作任何处理。术后4,8,12,16周进行X射线摄片、标本大体观察、组织病理学观察。
结果与结论:术后16周,实验组缺损区X射线影像与正常骨组织无区别,骨髓腔完全再通,有明显的骨组织生成,苏木精-伊红染色可见骨小梁和较多核深染的长梭形骨细胞;对照组X射线骨密度影略低于正常骨组织,部分骨髓腔再通,苏木精-伊红染色可见骨细胞周围有不少软骨细胞,未见明显的骨小梁或骨板结构,排列较紊乱;空白对照组断端骨钙化影同正常骨组织一致,断端各自封闭形成骨不连,苏木精-伊红染色可见较多的纤维组织和少量的类骨组织。表明丝素/壳聚糖/纳米羟基磷灰石三维复合支架可较好地修复兔桡骨大段骨缺损。

关键词: 生物材料, 骨生物材料, 丝素, 壳聚糖, 纳米羟基磷灰石, 骨组织工程, 复合支架, 骨缺损

Abstract:

BACKGROUND: Silk fibroin/chitosan/nano hydroxyapatite (SF/CS/nHA) composite scaffold constructed in preliminary experiments has good physical and chemical properties.
OBJECTIVE: To study the capacity and mechanism of SF/CS/nHA composite scaffold for repair of rabbit radial bone defects.
METHODS: Thirty-six New Zealand white rabbits were selected to make animal models of right radial bone defects, and then randomly divided into SF/CS/nHA group, SF/CS group and blank control group. Blank control group had no treatment after modeling. X-ray radiography, gross observation and histopathological observation were performed at 4, 8, 12, 16 weeks postoperatively.
RESULTS AND CONCLUSION: Sixteen weeks after surgery, bone defects in the SF/CS/nHA group were completed replaced by normal bone tissue on X-ray images, and the bone marrow cavity showed complete recanalization with new bone formation; hematoxylin-eosin staining showed bone trabecula and many fusiform bone cells. In the SF/CS group, the bone mineral density in the defect area was slightly lower than that of the normal bone tissues, the bone marrow cavity was partly rehabilitated, and many chondrocytes were seen around bone cells that arranged irregularly with no bone trabecula or bone lamella. In the blank control group, the images of bone calcification were consistent with normal bone tissues, and a closed bone ununion was formed at each end; hematoxylin-eosin staining showed that the blank control group was filled by fibrous connective tissue and a small amount of bone-like tissues. SF/CS/nHA composite scaffold is better for repair of rabbit radial bone defects.

Key words: biocompatible materials, silk fibroin, chitosan, nanoparticles, hydroxyapatites

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