Acta Biomater:κ-角叉菜胶和纳米羟基磷灰石可注射骨替代物可更好的促进成骨

2018-11-05 MedSci MedSci原创

迄今为止,kappa-角叉菜胶(κ-CG)和羟基磷灰石(HA)组合制备的骨替代材料尚未得到充分研究。角叉菜胶(CGs)具有很多优良的特征,例如生物相容性、亲水性和与天然糖胺聚糖(GAG)的结构相似性,并且已经证明它可了刺激细胞粘附和增殖的能力。羟基磷灰石纳米粒子由于其优异的生物相容性、生物活性和骨传导性而成为研究最多的骨再生材料之一。特别地,该研究提出了一种用于制备κ-CG/nHA的新生物活性复合

迄今为止,kappa-角叉菜胶(κ-CG)和羟基磷灰石(HA)组合制备的骨替代材料尚未得到充分研究。角叉菜胶(CGs)具有很多优良的特征,例如生物相容性、亲水性和与天然糖胺聚糖(GAG)的结构相似性,并且已经证明它可了刺激细胞粘附和增殖的能力。羟基磷灰石纳米粒子由于其优异的生物相容性、生物活性和骨传导性而成为研究最多的骨再生材料之一。特别地,该研究提出了一种用于制备κ-CG/nHA的新生物活性复合物的方法,用于许多骨再生应用。

我们进行了一系列体外实验来评估骨替代物对人成骨细胞的影响。细胞培养研究表明,所有测试的样品都具有细胞相容性。相对于对照底物,细胞附着和增殖在所有测试的支架表面上更好。与由1wt%CG组成的S1测试材料相比,分别渗透1.5和2.5wt%CG的S2和S3样品表现出细胞铺展能力的增强。对于每种测试材料观察到优异的成骨细胞活力和粘附性。另外,为该研究开发的骨替代物呈现出明显的骨传导环境。碱性磷酸酶(ALP)和钙沉积分析结果显示,与对照组相比,ALP表达和钙沉积在测试κ-CG/nHA表面上均得到改善。

总之,该研究结果,本研究开发的可注射骨替代物显示出许多骨再生应用的巨大潜力,因此应进一步研究。

原始出处:

Ocampo JIG, de Paula MMM, et al., Osteoblast Responses to Injectable Bone Substitutes of kappa-Carrageenan and Nano Hydroxyapatite. Acta Biomater. 2018 Oct 17. pii: S1742-7061(18)30622-6. doi: 10.1016/j.actbio.2018.10.023. 

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    2018-11-18 windight
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    2019-02-13 sunylz
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    2018-11-07 zhaojie88
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    2018-11-05 医者仁心5538

    学习了

    0