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脱细胞羊膜负载骨髓间充质干细胞修复软骨缺损的实验研究 被引量:9

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摘要 目的研究人脱细胞羊膜(HAAM)负载骨髓间充质干细胞(BMSCs)修复兔膝关节软骨缺损的效果。方法分离、培养兔BMSCs,以1.63×105/cm2的密度接种于HAAM上,培养6-9d后行细胞与羊膜复合体的电镜及光镜检查。实验兔24只,随机分为A、B两组,每组12只,建立兔膝关节髁间窝非负重区关节软骨缺损模型。右膝为空白对照侧,不植入任何材料,左膝为实验侧。A组左膝植入BMSCs与HAAM复合体(复合组),B组左膝植入单纯HAAM(HAAM组)。术后8、12周,对缺损部位行大体观察、组织学观察及Wakitani的评分.评估新生组织修复软骨缺损的效果。结果大体观察结果表明,A组术后8、12周实验侧出现类软骨组织.而对照侧由纤维样组织填充;B组术后8、12周无类软骨组织出现,对照侧新生组织质地较硬。组织学观察结果表明,A组术后8、12周实验训均类软骨细胞密集,而12周类软骨细胞数较多,并出现类软骨基质,对照侧无类软骨细胞形成。B组实验侧术后8、12周出现少量的类软骨细胞,对照侧只有纤维组织。组织学评分:术后8周复合组为5.31±0.68,而术后12周为3.23±0.52,较其他组差异有统计学意义(P〈0.05)。结论人脱细胞羊膜负载BMSCs在体内环境下能够较好的修复关节软骨缺损。
出处 《中华显微外科杂志》 CSCD 北大核心 2012年第5期399-401,共3页 Chinese Journal of Microsurgery
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参考文献12

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