Acta Biomater:锌功能化支架用于颅面骨修复应用

2019-05-24 不详 网络

种植体骨诱导和随后的成骨活动是改善大型颅面骨缺损的再生愈合的关键。在这里,我们描述了通过包含锌离子促进颅颌面骨再生开发的一类矿物质含量的增加矿化胶原支架,以促进体外成骨。锌是骨骼组织和骨骼中必需的微量元素,可溶性锌被证明可促进猪脂肪来源的干细胞的成骨分化。我们报告了一种新型锌功能化支架,该支架是通过向矿化胶原-糖胺聚糖前体悬浮液中加入硫酸锌制成的,然后冷冻干燥形成多孔生物材料。通过成像(扫描电子显

种植体骨诱导和随后的成骨活动是改善大型颅面骨缺损的再生愈合的关键。在这里,我们描述了通过包含锌离子促进颅颌面骨再生开发的一类矿物质含量的增加矿化胶原支架,以促进体外成骨。锌是骨骼组织和骨骼中必需的微量元素,可溶性锌被证明可促进猪脂肪来源的干细胞的成骨分化。

我们报告了一种新型锌功能化支架,该支架是通过向矿化胶原-糖胺聚糖前体悬浮液中加入硫酸锌制成的,然后冷冻干燥形成多孔生物材料。通过成像(扫描电子显微镜),机械测试(压缩)和组成(X射线衍射,电感耦合等离子体质谱)分析对锌官能化支架的分析。

结果显示,锌官能化支架改变了矿物相的形态和弹性模量,但是基本上不改变透钙磷石相的组成或除去支架的微观孔形态。这些支架还显示数天至数周的锌释放动力学,并促进在这些锌支架内培养的猪脂肪来源的干细胞的成功生长和促成骨能力。

综上所述,我们认为锌功能化支架为探索改善颅颌面骨损伤模型体内成骨的策略提供了独特的平台。

原始出处:

Tiffany AS, Gray DL, et al., The inclusion of zinc into mineralized collagen scaffolds for craniofacial bone repair applications. Acta Biomater. 2019 May 20. pii: S1742-7061(19)30358-7. doi: 10.1016/j.actbio.2019.05.031. 

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    2019-10-13 windight
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    2020-05-08 sunylz
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    2019-10-24 axin020
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    2019-05-24 329523732

    不错

    0