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Fabrication of long-acting drug release property of hierarchical porous bioglasses/polylactic acid fibre scaffolds for bone tissue engineering

机译:用于骨组织工程的多层多孔生物玻璃/聚乳酸纤维支架长效释药性能的制备

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摘要

Hierarchical porous fibre scaffolds with mesoporous bioglasses (MBGs) and polylactic acid (PLA) were successfully fabricated by the electrospinning method. These compound scaffolds possess macropores with sizes of about 100 nm because of the solvent evaporation from the fibre and the mesoporous structure ( ~4.0 nm) originated from MBGs. The biomineralisation ability was investigated in simulated body fluid. The fibre structure is beneficial for inducing the growth of hydroxyapatite. In addition, compared with pure MBGs, the materials (MP-1 and MP-2) exhibit a long-acting drug release process up to 140 h and the drug release process corresponds with the Fickian diffusion mechanism. With the special fibre morphology and the hierarchical porous structure, the MBGs/PLA fibre scaffolds are expected to have potential application for bone tissue repair and regeneration.
机译:通过静电纺丝法成功地制备了具有介孔生物玻璃(MBG)和聚乳酸(PLA)的多层多孔纤维支架。这些化合物支架具有大孔,其大小约为100 nm,这是因为溶剂从纤维中蒸发,而中孔结构(〜4.0 nm)源自MBG。在模拟体液中研究了生物矿化能力。纤维结构有利于诱导羟基磷灰石的生长。此外,与纯MBGs相比,材料(MP-1和MP-2)在长达140小时内表现出长效药物释放过程,并且药物释放过程与Fickian扩散机制相对应。凭借特殊的纤维形态和分层的多孔结构,MBG / PLA纤维支架有望在骨组织修复和再生中具有潜在的应用。

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