中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (51): 9558-9562.doi: 10.3969/j.issn.2095-4344.2012.51.011

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

复合骨形态发生蛋白缓释材料修复兔桡骨缺损

崔 旭,马远征,李大伟,薛海滨   

  • 出版日期:2012-12-16 发布日期:2012-12-16

Bone morphogenic protein slow-release compound materials for repair of radial defects in rabbits

Cui Xu, Ma Yuan-zheng, Li Da-wei, Xue Hai-bin   

  • Online:2012-12-16 Published:2012-12-16

摘要:

背景:在聚乳酸-聚羟基乙酸中加入β-磷酸三钙可调控其降解速率和强度,加载骨形态发生蛋白可增强材料的诱导成骨能力。
目的:检验β-磷酸三钙/聚乳酸-聚羟基乙酸/异烟肼/骨形态发生蛋白缓释材料修复兔桡骨节段性骨缺损的效果。
方法:制作兔左侧桡骨12 mm缺损模型,随机分4组,分别于骨缺损处植入β-磷酸三钙/聚乳酸-聚羟基乙酸材料、β-磷酸三钙/聚乳酸-聚羟基乙酸/异烟肼缓释材料、β-磷酸三钙/聚乳酸-聚羟基乙酸/异烟肼/骨形态发生蛋白缓释材料,并设置空白对照组(不植入任何材料)。
结果与结论:术后12周时,β-磷酸三钙/聚乳酸-聚羟基乙酸材料组、β-磷酸三钙/聚乳酸-聚羟基乙酸/异烟肼缓释材料组、β-磷酸三钙/聚乳酸-聚羟基乙酸/异烟肼/骨形态发生蛋白缓释组骨缺损都得到较好修复,其中β-磷酸三钙/聚乳酸-聚羟基乙酸/异烟肼/骨形态发生蛋白缓释组骨缺损修复效果最佳(P < 0.05),空白对照组骨缺损未修复。表明β-磷酸三钙/聚乳酸-聚羟基乙酸/异烟肼/骨形态发生蛋白缓释材料可很好修复兔节段性骨缺损。

Abstract:

BACKGROUND: The degradation rate and strength of poly (lactic-co-glycolic acid) (PLGA) can be regulated by the addition of β-tricalcium phosphate (TCP), and the load of bone morphogenetic protein (BMP) can promote the osteoinductive capacity.
OBJECTIVE: To test the effect of slow-release PLGA/β-TCP/isoniazid (INH)/BMP material on the repair of segmental radial defects in rabbits.
METHODS: Forty New Zealand rabbits were collected and a rabbit model of 12-mm left radial defects was established. The rabbits were randomly divided into four groups: group 1, group 2, group 3 and group 4. The former three groups were implanted PLGA/β-TCP material, PLGA/β-TCP/INH material and PLGA/β-TCP/INH / BMP material, respectively. The group 4 served as the blank control group (without implants).
RESULTS AND CONCLUSION: At week 12 after treatment, radial defects in the former three groups were all repaired well, and the PLGA/β-TCP/INH /BMP group obtained the best results (P < 0.05). The blank control group failed to restore radial defects. These results suggest that the slow-release PLGA/β-TCP/INH/BMP material can effectively repair the 12-mm long radial defects in rabbits.