中国临床解剖学杂志 ›› 2010, Vol. 28 ›› Issue (4): 421-.

• 实验研究 • 上一篇    下一篇

可注射性nHA/CS-BMSCs复合物修复兔股骨缺损的实验研究

刘 阳1, 朱立新1, 王庆波3, 田 京1, 许 勇1, 温永福1, 孙 进1, 黄 智2   

  1. 1.南方医科大学附属珠江医院骨科中心,  广州   510282;    2.清华大学材料科学与工程系,  北京   100084;
    3.南方医科大学附属广济医院,  广东   东莞    523690
  • 收稿日期:2010-02-20 出版日期:2010-07-25 发布日期:2010-07-27
  • 通讯作者: 田 京,教授,副主任医师,E-mail: tian_jing6723@yahoo. com.cn E-mail:liuy0802@126.com
  • 作者简介:刘 阳 (1983-),男,河南周口人,在读硕士研究生,Tel:15920196283
  • 基金资助:

    广东省科技计划项目资助(2008B030301347)

Repairing bone defects of rabbit femur adopting injectable nano-Hydroxyapatite/chitosan composite compounded with bone marrow stromal cells

LIU Yang, ZHU Li-xin, WANG Qing-bo, et al.   

  1. Department of Othorpaedics, Zhujiang Hospital, Southern Medical University, Guangzhou 510515, China
  • Received:2010-02-20 Online:2010-07-25 Published:2010-07-27

摘要:

目的 评估可注射性纳米羟基磷灰石/壳聚糖材料(nHA/CS)复合骨髓基质干细胞(BMSCs)在促进兔股骨骨缺损修复中的作用。 方法 18只成年新西兰大白兔双侧股骨外侧髁均建立骨缺损模型,造模后随机分为3组 (1)实验组:18只兔右侧股骨缺损植入nHA/CS-BMSCs复合材料;(2)对照组:其中16只兔左侧股骨髁缺损植入单纯CS凝胶材料;(3)空白组:2只兔左侧骨缺损旷置,不植入任何材料。于第12周末取材,对缺损修复区组织行大体、影像学、形态计量学观察。实验组和对照组之间进行比较,观察该复合材料对骨缺损的修复效果。 结果 18只兔均进入结果分析,X线侧位片及CT检查示实验组修复疗效优于对照组。对缺损修复区CT值测量分析显示实验组新骨形成多于对照组,差异有统计学意义(P<0.05)。 结论 在促进骨缺损的修复中,nHA/CS-BMSCs复合材料疗效优于单纯CS材料的修复能力,具有确切的骨缺损修复能力,有良好的应用前景。

关键词: 骨髓基质干细胞, 羟基磷灰石/壳聚糖, 骨缺损, 新西兰白兔

Abstract:

Objective To explore the ability of injectable nano-Hydroxyapatite/chitosan composite compounded with bone marrow stromal cells (nHA/CS-BMSCs) for repairing large bone defects of rabbit femoral condyle. Methods Animal models of bone defects were induced in 18 New Zealand white rabbits by drilling holes in bilateral femoral lateral condyles, and treated as follows: for all animals, the right defects were filled with the nHA/CS-BMSCs compounded, however, the left defects of 16 rabbits were filled with CS material, while, left defects of another 2 animals were untreated and taken as the control. The repairing effects were evaluated by gross observation, X-ray and CT scan 12 weeks after operation. Results The gross observation, X-ray lateral projection, the measurement and analysis of CT values, and the results of three dimensional reconstruction revealed that, the bone defects filled with nHA/CS-BMSCs had been repaired completely, with the better repairing effects compared to that of CS. nHA/CS-BMSCs prompt to  the new bone formation, compared to CS material(P<0.05).    Conclusions     The nHA/CS-BMSCs is effective on repairing bone defects, which maybe a promising bone repairing material for clinical application.

Key words:  Bone marrow stromal cells, nHA/CS, bone defect, New Zealand white rabbits

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