中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (25): 4629-4636.doi: 10.3969/j.issn.2095-4344.2013.25.010

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

深低温冻存羟基磷灰石/骨髓间充质干细胞修复兔桡骨缺损

邢志远1, 2,张继波2,孔令菊2,刘建生2,郑德宇2   

  1. 1 盘锦市中心医院骨科,辽宁省盘锦市  124000
    2 辽宁医学院解剖学教研室,辽宁省锦州市  121001
  • 收稿日期:2013-02-18 修回日期:2013-05-17 出版日期:2013-06-18 发布日期:2013-06-18
  • 通讯作者: 郑德宇,博士,教授,硕士生导师,辽宁医学院解剖学教研室,辽宁省锦州市 121001 zdy4673349@163.com
  • 作者简介:邢志远★,男,1969年生,辽宁省营口市人,汉族,2012年辽宁医学院毕业,硕士,副主任医师,主要从事骨关节外科研究。
  • 基金资助:

    实验获得辽宁省教育厅一般项目的支持 (L2011144)。

Combination of cryopreserved hydroxyapatite/bone marrow mesenchymal stem cells repairs rabbit radial defects

Xing Zhi-yuan1, 2, Zhang Ji-bo2, Kong Ling-ju2, Liu Jian-sheng2, Zheng De-yu2   

  1. 1 Department of Orthopedics, Municipal Central Hospital of Panjin, Panjin  124000, Liaoning Province, China
    2 Department of Anatomy, Liaoning Medical University, Jinzhou  121001, Liaoning Province, China
  • Received:2013-02-18 Revised:2013-05-17 Online:2013-06-18 Published:2013-06-18
  • Contact: Zheng De-yu, M.D., Professor, Master’s supervisor, Department of Anatomy, Liaoning Medical University, Jinzhou 121001, Liaoning Province, China zdy4673349@163.com
  • About author:Xing Zhi-yuan★, Master, Associate chief physician, Department of Orthopedics, Municipal Central Hospital of Panjin, Panjin 124000, Liaoning Province, China; Department of Anatomy, Liaoning Medical University, Jinzhou 121001, Liaoning Province, China
  • Supported by:

    the Educational Bureau of Liaoning Province, No. L2011144

摘要:

背景:以往研究表明羟基磷灰石复合骨髓间充质干细胞具有良好的骨缺损修复效果,但这种复合材料在冻存后是否具有骨缺损修复效果还不清楚。
目的:观察深低温冻存羟基磷灰石/骨髓间充质干细胞复合修复骨缺损的效果。
方法:制备27只日本大耳白兔桡骨10 mm缺损模型,随机分为冻存复合材料组、新鲜复合材料组与羟基磷灰石组,3组分别于骨缺损处植入-80 ℃保存3个月的羟基磷灰石/同种异体骨髓间充质干细胞复合物、新鲜制备的羟基磷灰石/同种异体骨髓间充质干细胞复合物及单纯羟基磷灰石,植入后8,12周行大体观察、X射线观察及苏木精-伊红染色等组织学观察,并于12周行生物力学检测。
结果与结论:术后12周,冻存复合材料组、新鲜复合材料组骨缺损大部分愈合,有成熟骨小梁通过,有的可见髓腔通畅,塑形较好;羟基磷灰石组骨痂生成少,骨缺损部分愈合,塑形欠佳,新骨生成少于冻存复合材料组、新鲜复合材料组(P < 0.05)。冻存复合材料组、新鲜复合材料组最大载荷明显大于羟基磷灰石组(P < 0.05)。表明低温冻存羟基磷灰石/骨髓间充质干细胞复合植骨材料的骨缺损修复能力与新鲜制作的复合材料几乎一致,未因冻存受到影响。

关键词: 生物材料, 骨组织构建, 羟基磷灰石, 骨髓间充质干细胞, 支架材料复合物, 低温冻存, 桡骨缺损, 省级基金

Abstract:

BACKGROUND: Previous studies have showed that hydroxyapatite combined with bone marrow mesenchymal stem cells has a good effect on bone defects, but the repair effect of cryopreserved composite material is unclear.
OBJECTIVE: To observe the effect of cryopreserved hydroxyapatite/bone marrow mesenchymal stem cells on bone defects.
METHODS: Twenty-seven Japanese rabbits were used to prepare 10 mm radial defect models and then randomly divided into cryopreserved composite group, fresh composite group and hydroxyapatite group. The three groups were respectively implanted with cryopreserved hydroxyapatite/bone marrow mesenchymal stem cells which were cryopreserved at -80℃ for 3 months, fresh hydroxyapatite/bone marrow mesenchymal stem cells and pure hydroxyapatite. After 8 and 12 weeks, general observation, X-ray observation and hematoxylin-eosin staining were performed, and biomechanical test was done at 12 weeks.
RESULTS AND CONCLUSION: At postoperative 12 weeks, bone defects were almost healed in the cryopreserved composite group and fresh composite group. Mature trabecular bone was seen, some canals were of patency, and good shape was found. While in the hydroxyapatite group, callus formation was less, only part of bone defects were healed, shaping was poor, and new bone formation was also less than the other two groups (P < 0.05). In addition, the maximal loading in the cryopreserved composite group and fresh composite group was significantly higher than that in the hydroxyapatite group (P < 0.05). These findings indicate that the cryopreserved hydroxyapatite/bone marrow mesenchymal stem cells composite material is similar to the fresh one in the repair capacity.

Key words: biomaterials, bone tissue construction, hydroxyapatite, bone marrow mesenchymal stem cells, composite scaffold materials, cryopreservation, radial defects, provincial grants-supported paper

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