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BMSCs与软骨细胞共培养复合BMG修复关节软骨缺损的实验研究

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摘要 本文探讨BMSCs与同种异体肋软骨细胞共培养及复合自体“双相”骨基质明胶(BMG)修复关节软骨缺损的可行性。①获取两种细胞的P2代随机分为三组:共培养组、高浓度软骨细胞组,低浓度软骨细胞组,体外培养2周后检测各组GAG含量。②改良的Urist法制备自体“双相”BMG支架,并与共培养细胞体外培养5天。⑤制备56只兔膝关节软骨缺损模型,随机分为5组。实验组植入共培养细胞-BMG复合体,对照组植入单纯BMG支架,空白组不作特殊处理。术后1、2、5个月取材行大体、组织学观察和改良的Pineda法评分。结果:①2周后A组培养液的GAG含量明显多于B、C组,差异有统计学意义(P〈0.05)。②电镜示“双相”BMG呈多孔网络状结构,细胞黏附其表面,生长良好。③术后3个月实验组软骨缺损由透明软骨修复,对照组和空白组仅由部分纤维组织填充。实验组各时期的评分优于对照组和空白组,差异均有统计学意义(P〈0.05)。结论:OBMSCs与同种异体肋软骨细胞共培养,可被诱导分化为软骨细胞,减少了软骨细胞的用量;②共培养细胞与自体“双相”BMG复合可有效地修复关节软骨缺损。
出处 《中国科技成果》 2013年第16期57-61,共5页 China Science and Technology Achievements
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