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An Experimental Study on Using the Porous Composite of Nanohydroxyapatite and Polymide as Scaffold Compound with rhBMP2 to Repairing Bone Defect on Rabbits |
MENG Chun-yang1 JIANG Dian-ming2 AN Hong2 HUANG Wei2 ZUO Yi3 LI Yu-bao3 |
1.Jining Medical College,Jining272113,China
2. The First Affiliated Hospital of Chong Qing University of Medical Sciences, Chongqing400016,China
3. Analytical and Testing Center,Sicuan University,Chengdu610064,China |
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Abstract AbstractObjective:To evaluate the ability of the porous nanohydroapatite crystals and polyamide composite (nHA/PA66) as scaffold compound with rhBMP2 to repairing bone defect, study the methods which fast the artificial bone with host bone healing in vivo.Methods: The animal models of bilaterial radius bone defect created with surgery in the New Zealand white rabbits, and were implanted with nHA/PA66/ rhBMP2 as experimental group, implanted nHA/PA66 as experimental control group, and no implant as blank control group. The effect were observed by gross Xray and histopathlogical examination and in situ hybridization at1, 2, 4, 8, 12W after operation, and use the spss12.0 and OneWayANOVA system to analysis. Results: The defects of experimental group and experimental control group were repair perfectly, The blank control group hadn't repaired after 12weeks, the speed of bonehealing of nHA/PA66/ rhBMP2 group were faster than nHA/PA66 group in the early time. The data of in situ hybridization analysis had statistically significant difference between nHA/PA66/ rhBMP2 and nHA/PA66 group in two weeks, but the data had no statistically significant difference between nHA/PA66/ rhBMP2 and nHA/PA66 group in four weeks . Conclusion:The results show porous scaffold of nHA/PA66 compound with rhBMP2 can enhance the ability of the artificial bone with host bone healing in the early time in vivo.
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Received: 05 January 2009
Published: 28 July 2009
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