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- 2015
同种异体骨支架复合自体骨髓间充质干细胞修复下颌骨节段缺损动物模型的建立
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Abstract:
摘要 目的:建立同种复合自体骨髓间充质干细胞修复下颌骨节段性的动物模型,为研究同种异体骨支架复合自体骨髓间充质干细胞修复下颌骨节段性缺损效果及其机制打下基础。方法:24只1岁龄比格犬,拔出所有动物右侧下颌前磨牙和磨牙,伤口愈合后制造左侧下颌骨3 mm节段性缺损(从颏孔后1 mm到下颌角前),随机分两组,实验组用同种异体骨支架复合骨髓间充质干细胞修复重建,对照组仅用同种异体骨修复重建。术后4、12、24、48周处死动物(每组3只),取标本并行CT检查。结果:实验组和对照组所有动物同种异体骨均能与自体骨愈合,48周时实验组动物同种异体骨几乎全部被自体骨替代,但是新骨的大小较植入时同种异体骨支架变小。对照组中,新骨主要在同种异体骨与自体骨结合部形成,新骨大小与原植入时同种异体骨大小变化不大。结论:同种异体骨支架复合自体骨髓间充质干细胞能加速成骨,该动物模型的成功建立,为进一步研究同种异体骨支架复合自体骨髓间充质干细胞修复下颌骨节段行缺损的效果及其机制打下基础
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