低渗联合冻干技术制备脱细胞神经支架及其力学性能分析

被引:6
作者
赵斌 [1 ]
马信龙 [1 ,2 ]
孙晓雷 [2 ]
李秀兰 [2 ]
马剑雄 [1 ]
杨召 [2 ]
李爽 [2 ]
徐桂军 [1 ]
杨强 [2 ]
机构
[1] 天津医科大学总医院骨科生物力学实验室
[2] 天津市天津医院骨研所细胞工程室
关键词
脱细胞神经; 组织工程; 力学特性;
D O I
10.16156/j.1004-7220.2013.04.017
中图分类号
R318.01 [生物力学];
学科分类号
100103 [病原生物学];
摘要
目的研究低渗联合冻干技术改良制备的脱细胞神经支架材料的组织学和生物力学特性。方法采用低渗联合冻干技术对传统脱细胞神经支架材料进行改良,脱细胞完成后通过HE染色和扫描电镜观察各组神经组织的组织学结构;利用Mimics软件测定脱细胞神经支架的孔隙率及空隙直径;并采用Endura TEC ELF3200力学仪器测试各组神经的生物力学特性。结果改良组所获得的脱细胞神经的脱细胞效果与传统脱细胞方法组相似,但组织结构更为疏松;传统和改良脱细胞组平均孔隙率分别为34.5%、49.3%,空隙直径分别为11.96、17.61μm;生物力学测试结果表明各组神经的生物力学特性(极限载荷、极限应力、极限应变、断裂功耗等)经检验无统计学差异(P>0.05)。结论低渗联合冻干技术制备的脱细胞神经可作为一种更有利于细胞复合的神经支架材料。
引用
收藏
页码:454 / 459
页数:6
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