中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (34): 5413-5417.doi: 10.3969/j.issn.2095-4344.2014.34.001

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

羟基磷灰石/凝胶纳米复合物修复兔颅骨缺损的影像学评估

耿海霞,郭秀娟,钱君荣,封 伟   

  1. 济宁医学院附属医院口腔科,山东省济宁市  272000
  • 修回日期:2014-07-16 出版日期:2014-08-20 发布日期:2014-08-20
  • 通讯作者: 耿海霞,济宁医学院附属医院口腔科,山东省济宁市 272000
  • 作者简介:耿海霞,女,汉族,1971年生,山东省济宁市人,1999年武汉大学口腔学院毕业,硕士,主任医师,教授,主要从事口腔材料、口腔正畸临床研究。
  • 基金资助:

    山东省自然科学基金(ZR2010HL046);山东省卫生厅科技发展计划项目(2011HZ018)

Imaging evaluation of hydroxyapatite/gel nano-composite in rabbit skull defect repair

Geng Hai-xia, Guo Xiu-juan, Qian Jun-rong, Feng Wei   

  1. Department of Stomatology, Affiliated Hospital of Jining Medical College, Jining 272000, Shandong Province, China
  • Revised:2014-07-16 Online:2014-08-20 Published:2014-08-20
  • Contact: Geng Hai-xia, Master, Chief physician, Professor, Department of Stomatology, Affiliated Hospital of Jining Medical College, Jining 272000, Shandong Province, China
  • About author:Geng Hai-xia, Master, Chief physician, Professor, Department of Stomatology, Affiliated Hospital of Jining Medical College, Jining 272000, Shandong Province, China
  • Supported by:

    the Natural Science Foundation of Shandong Province, No. ZR2010HL046; the Scientific Development Plan of Shandong Health Bureau, No. 2011HZ018

摘要:

背景:羟基磷灰石/凝胶纳米新型复合物具备与天然骨相同的机械强度,但对骨缺损的修复能力与成骨效果还有待于进一步研究证实。

目的:探索羟基磷灰石/凝胶纳米复合物在兔颅骨缺损中的修复效果。
方法:建立兔颅顶骨洞型骨缺损模型,缺损区植入羟基磷灰石/凝胶新型复合物,空白缺损设为阴性对照,自体颅骨设为阳性对照。于植入后4,8,12周通过X射线片与CT观察分析骨缺损修复状况。

结果与结论:X射线片观察显示,植入后8周,大鼠自体颅骨修复区与周围正常的骨组织形态类似;羟基磷灰石/凝胶纳米复合物修复区中央位置骨质致密,形态接近正常骨组织,边缘略显模糊,植入后12周,羟基磷灰石/凝胶纳米复合物与骨缺损边缘更加模糊,复合物中心呈不连贯状态,空白缺损组可观察到明显的规则的透射阴影。植入后12周CT检测显示,羟基磷灰石/凝胶新型复合物缺损边缘部分紧密融合,与周围的正常骨组织结合为一体。结果说明,羟基磷灰石/凝胶新型仿生复合物在兔颅骨缺损中可取得较好的修复效果。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 骨生物材料, 羟基磷灰石/凝胶纳米复合物, 支架材料, 骨缺损, 组织工程, 引导骨组织再生, 颅骨, 成骨细胞, 山东省自然科学基金

Abstract:

 BACKGROUND: Hydroxyapatite/gel nano-composite has the same mechanical strength to the natural bone, but its ability to repair bone defects and osteogenic effect need to be confirmed by further studies.

OBJECTIVE: To explore the repair effect of hydroxyapatite/gel bionic composite in skull defects of rabbits.
METHODS: The hole-like calvarium defect models were established in rabbits, and treated with hydroxyapatite/ gel composites (hydroxyapatite/gel group), autologous skull as positive control (autologous bone group) and nothing as negative control (blank group). The repairing condition in the skull defect areas were observed and analyzed by X-ray and CT at 4, 8, 12 weeks after implantation. 

RESULTS AND CONCLUSION: After 8 weeks, X-ray assessment showed that normal-like bone tissue appeared in the defect region of the autologous bone group; in the hydroxyapatite/gel group, dense bone with similar morphology to normal bone tissue was found in the central site of defect region, and the boundary was slightly blurred. After 12 weeks, the hydroxyapatite/gel showed blurred edge compared with autologous bone, and the center of the composite was disconnected; in the blank group, a clear and regular transmitted shadow was observed. After 12 weeks, CT examination showed that the hydroxyapatite/gel was connected tightly with the surrounding normal bone tissue. As a new bionic composite, the hydroxyapatite/gel can achieve good effect in repairing skull defects of rabbits.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words:  tissue engineering, osteoblasts, models, animal, stents

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