Tissue-engineered annular fibrosus scaffold constructed by konjac glucomannan/nano-hydroxyapatite/collagen composite material
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国家科技期刊平台
NETL
NSTL
万方数据
维普
背景：研究符合天然椎间盘生物学结构与功能的组织工程移植物，对退变椎间盘进行生物学功能重建，已逐步成为治疗椎间盘退变性疾病较理想的解决方案。<br> 目的：设计构建一种新型的组织工程纤维环支架材料。<br> 方法：以魔芋葡甘聚糖、纳米羟基磷灰石和胶原为原料，依次应用湿法纺丝、化学交联、冷冻干燥等技术构建一种全新的组织工程化纤维环支架，采用 X 射线衍射分析和傅里叶变换红外光谱仪对其进行定性成分分析，同时对其理化性能、生物力学性能及细胞相容性进行分析。<br> 结果与结论：魔芋葡甘聚糖/纳米羟基磷灰石/胶原组织工程椎间盘纤维环支架呈三维立体多孔结构，孔径(425.8±47.3)μm，孔隙率为(73.4±5.6)%，吸水率为(718.6±24.3)%，具有与天然纤维环相似的抗压强度，具有良好的生物相容性，无细胞毒性。结果表明魔芋葡甘聚糖/纳米羟基磷灰石/胶原组织工程椎间盘纤维环支架具有适宜的三维多孔结构、生物相容性、孔隙率、吸水率和生物力学强度。
BACKGROUND:Tissue-engineered transplantation technique has become an ideal therapeutic regimen for degenerative disc diseases through reconstituting the biological functions of the degenerated intervertebral discs. <br> OBJECTIVE:To construct a novel tissue-engineered annular fibrosus scaffold. <br> METHODS:Konjac glucomannan, nano-hydroxyapatite and colagen were used to fabricate a new tissue-engineered annular fibrosus scaffold by wet spinning, chemical crosslinking, and freeze drying methods. Afterwards, X-ray diffraction and Fourier transform infrared spectrometer were used to analyze the scaffold qualitative components, physico-chemical property, biomechanical performance and cytocompatibility. <br> RESULTS AND CONCLUSION:The bionic scaffold had a three-dimensional porous structure, with the average pore size of (425.8±47.3) μm, the average porosity of (73.4±5.6)%, and the water absorption of (718.6±24.3)%. In addition, the compressive strength of the scaffold was similar with that of the natural annular fibrosus. More importantly, the scaffold had good biocompatibility without cytotoxicity. These results show that the tissue-engineered annular fibrosus scaffold constructed by konjac glucomannan, nano-hydroxyapatite and colagen has proper three-dimensional porous structure, biocompatibility, porosity, water absorption and biomechanical strength.
国家科技期刊平台
NSTL
万方数据
维普
