共 17 条
锶纳米纤维能促进骨组织再生
被引:1
作者:

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论文数: 引用数:
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机构:
[1] 南华大学附属南华医院
来源:
关键词:
骨组织;
组织支架;
纳米复合材料;
碳酸锶;
骨形成;
D O I:
10.13417/j.gab.038.001869
中图分类号:
R318.08 [生物材料学];
学科分类号:
0805 ;
080501 ;
080502 ;
摘要:
为了探究锶纳米纤维在骨组织再生中的作用机制,本研究通过静电纺丝来制备聚合物纳米复合材料工程支架,促进骨组织再生。将碳酸锶纳米粒子(nSrCO3)以10%和15%重量比添加到聚己酸内酯(PCL)中,做成纤维直径在300~500 nm范围内的纳米复合材料纤维支架(PCL+10%SrCO3和PCL+15%SrCO3),掺入nSrCO3后降低了纤维支架的结晶度和弹性模量,复合PCL+15%SrCO3支架可在4 d内释放出高达58 ppm的Sr2+离子。细胞研究证实,体外使用的含有15%n Sr CO3的复合支架增强了人间充质干细胞的增殖。在PCL+15%SrCO3中,最小沉积量显著增加达约4倍,促进了骨形成。在PCL+15%SrCO3纤维中,成骨标志物如BMP-2和Runx2的mRNA和蛋白的高表达也可以证明锶纳米纤维能促进骨形成。本研究为研究锶纳米纤维在促进骨组织再生中的运用提供了一定的参考价值。
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页码:1869 / 1875
页数:7
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