南方医科大学学报 ›› 2006, Vol. 26 ›› Issue (12): 1745-1748.

• • 上一篇    下一篇

新型聚乳酸/骨基质多孔复合支架材料制备及初步研究

张育敏; 李宝兴; 李冀; 马洪强; 赵亚平; 原林;   

  1. 南方医科大学组织工程研究中心; 中国辐射防护研究院生物材料制药技术研究所; 唐山市第二医院; 南方医科大学组织工程研究中心 广东广州510515; 山西太原030006; 河北唐山063000; 广东广州510515;
  • 出版日期:2006-12-20 发布日期:2006-12-20
  • 基金资助:
    广东省科技攻关项目(2004B34001006)~~

Preparation of porous polylactic-acid/bone matrix gelatin composite as scaffold materials for bone-tissue engineering

ZHANG Yu-min1,LI Bao-xing2,LI Ji3,MA Hong-qiang2,ZHAO Ya-ping2,YUAN Lin1 1Research Center of Tissue Engineering,Southern Medical University,Guangzhou 510515,China;2Institute of Biomaterials and Pharmacy,China Institute for Radiation Protection,Taiyuan 030006,China;3Second Hospital of Tangshan,Tangshan 063000,China   

  1. 南方医科大学组织工程研究中心; 中国辐射防护研究院生物材料制药技术研究所; 唐山市第二医院; 南方医科大学组织工程研究中心 广东广州510515; 山西太原030006; 河北唐山063000; 广东广州510515;
  • Online:2006-12-20 Published:2006-12-20

摘要: 目的采用CO2超临界法(SC-CO2)制备一种新型的聚乳酸(PLA)/骨基质(BMG)多孔复合型生物活性骨支架材料,并评价其理化性能及细胞相容性,确定材料最佳复合比例,为进一步的实验提供实验依据。方法采用SC-CO2法制备不同比例的PLA/BMG多孔复合型骨植入材料,通过大体观察、孔隙率测定,力学检测、SEM观察评价其理化性能,并结合体外细胞相容性检测选择最佳复合比例。结果采用SC-CO2法制备的PLA/BMG多孔复合支架材料中BMG的比例与材料的孔隙率及细胞相容性成正相关,与力学性能成负相关;含30%BMG的复合材料具有良好的综合性能。结论采用SC-CO2法制备的PLA/BMG(7/3)多孔复合支架材料具有良好的理化性能及细胞相容性,可作为骨植入材料及骨组织工程支架进一步研究。 更多还原

Abstract: Objective To develop a novel porous poly lactic-acid(PLA)/bone matrix gelatin(BMG)bioactive composite biomaterial with supercritical carbon dioxide(SC-CO2)extraction and determine the optimal proportion of the ingredients by evaluating the physical and chemical characteristics and cellular compatibility of the composites.Methods The PLA/BMG composite biomaterials with various PLA/BMG proportions were prepared with SC-CO2 technique and evaluated by macroscopic observation,porosity and mechanical assessment,and scanning electron micrograph(SEM).The optimal proportion of PLA/BMG was determined in conjunction with the results of cellular compatibility evaluation.Results BMG proportion in BLA/BMG composite biomaterials prepared with SC-CO2 technique was positively associated with the cellular compatibility and porosity,and inversely with the mechanics of the prepared composite.The results showed BMG content of 30% in PLA/BMG composite was optimal.Conclusion The composite with PLA and BMG proportion of 7:3 possesses good physical and chemical characteristics and cellular compatibility,suggesting its potential as the bone implant biomaterial and bone-tissue engineering scaffold.

中图分类号: