中国组织工程研究

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骨髓间充质干细胞复合异体骨修复松质骨缺损

王  峰,付志厚   

  1. 辽宁医学院济南军区总医院研究生培养基地,山东省济南市  250031
  • 收稿日期:2013-03-15 修回日期:2013-04-18 出版日期:2013-07-02 发布日期:2013-07-02
  • 通讯作者: 付志厚,博士、教授、主任医师、硕士生导师,济南军区总医院骨病科,山东省济南市 250031 jzgbfzh@yahoo.com.cn
  • 作者简介:王峰★,男,1984年生,山东省烟台市人,汉族,辽宁医学院在读硕士,主要从事骨缺损修复方面的研究。 medouni@163.com
  • 基金资助:

    辽宁医学院研究生基金

Bone marrow mesenchymal stem cells combined with allogeneic bone for cancellous bone defects

Wang Feng, Fu Zhi-hou   

  1. Postgraduate Training Unit of Liaoning Medical University, General Hospital of Jinan Military Region, Jinan  250031, Shandong Province, China
  • Received:2013-03-15 Revised:2013-04-18 Online:2013-07-02 Published:2013-07-02
  • Contact: Fu Zhi-hou, M.D., Chief physician, Professor, Master’s supervisor, Postgraduate Training Unit of Liaoning Medical University, General Hospital of Jinan Military Region, Jinan 250031, Shandong Province, China jzgbfzh@yahoo.com.cn
  • About author:Wang Feng★ Studying for master’s degree, Postgraduate Training Unit of Liaoning Medical University, General Hospital of Jinan Military Region, Jinan 250031, Shandong Province, China medouni@163.com
  • Supported by:

    the Postgraduate Foundation of Liaoning Medical University

摘要:

背景:有研究表明骨髓间充质干细胞及异体骨可促进骨缺损的修复,但骨髓间充质干细胞复合异体骨对于松质骨缺损的修复效果至今少有报道。
目的:观察骨髓间充质干细胞复合异体骨修复兔松质骨缺损效果。
方法:在新西兰大白兔双侧股骨外侧髁造成0.6 cm×1.2 cm 的松质骨缺损,一侧设为模型组,骨缺损处植入复合骨髓间充质干细胞的异体骨,另一侧设为对照组,单纯植入异体骨。
结果与结论:植入后4,8,12周,大体观察、X射线检查和苏木精-伊红染色观察结果显示,模型组在新骨成长方面,缺损区修复方面均优于对照组。植入后12周,模型组骨缺损区可见大量骨小梁形成及成熟的板层骨组织,骨缺损基本修复。对照组骨缺损区仅可见大量编织骨形成,骨缺损尚未得到有效修复。模型组Lane-Sandhu法X射线结合组织学观察评分高于对照组(P < 0.05)。生物力学检测结果显示,植入后12周,模型组股骨髁最大压力载荷、载荷/应变比值均高于对照组(P < 0.05),最大应变位移较对照组低(P < 0.05)。结果证实,骨髓间充质干细胞复合异体骨可有效修复兔股骨髁松质骨缺损,且修复效果明显优于单纯异体骨移植。

关键词: 干细胞, 骨髓干细胞, 骨髓间充质干细胞, 异体骨, 松质骨缺损, 股骨髁, 其他基金, 干细胞图片文章

Abstract:

BACKGROUND: Some studies have shown that bone marrow mesenchymal stem cells and allograft bone have a certain role for repairing bone defects, but the effectiveness on cancellous bone defects is seldom reported so far.
OBJECTIVE: To observe the effectiveness of bone marrow mesenchymal stem cells combined with allogeneic bone on cancellous bone defects.
METHODS: The models of cancellous bone defects (0.6 cm×1.2 cm) were made artificially in both condylus lateralis femoris of New Zealand white rabbits: one side served as model group implanted with combination of bone marrow mesenchymal stem cells and allogeneic bone, and the other side was considered as control group implanted with allogeneic bone.
RESULTS AND CONCLUSION: The model group was better than the control group in new bone growth and defect repair at 4, 8, 12 weeks after implantation, which was confirmed by general observation, X-ray examination and hematoxylin-eosin staining. There was a large amount of trabecular bone formation and mature lamellar bone tissue in bone defects of model group by histological observation at 12 weeks after implantation, and bone defects of the model group were repaired basically; while there were only abundant woven bones in the control group, and bone defects in the control group were not repaired effectively. Scores on Lane-Sandhu’s X-ray combined with histological observation were higher in the model group than the control group (P < 0.05). Biomechanical test showed that the maximum pressure load of the femoral condyle and load/strain ratio in the model group were significantly higher than those in the control group at 12 weeks after implantation (P < 0.05), while the maximum strain and displacement of the model group was lower than that of the control group (P < 0.05). These findings suggest that the combination of bone marrow mesenchymal stem cells and allogeneic bone is superior to simple allogeneic bone implantation in the repair of cancellous bone defects of the femoral condyle.

Key words: stem cells, bone marrow-derived stem cells, bone marrow mesenchymal stem cells, allogeneic bone, cancellous bone defects, femoral condyle, other grants-supported paper, stem cell photographs-containing paper

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