Biomed Mater:新型低温系统对羟基磷灰石-氧化锆生长及成骨矿化的影响

2019-10-15 不详 网络

陶瓷和生物陶瓷,如羟基磷灰石和锆,被用于骨组织工程中。羟基磷灰石具有与骨骼相似的化学性质,而锆具有合适的机械性质。本文旨在评估通过基于不同低温(例如873°K(HZ600),923°K(HZ650)和973°K(HZ700))的新系统获得的羟基磷灰石-锆的细胞生长和成骨细胞矿化的能力。通过热重特征和X射线衍射图检查了通过该新系统获得的羟基磷灰石-氧化锆。此外,分析其表面成骨细胞生长和矿化的能力。通

陶瓷和生物陶瓷,如羟基磷灰石和锆,被用于骨组织工程中。羟基磷灰石具有与骨骼相似的化学性质,而锆具有合适的机械性质。本文旨在评估通过基于不同低温(例如873°K(HZ600),923°K(HZ650)和973°K(HZ700))的新系统获得的羟基磷灰石-锆的细胞生长和成骨细胞矿化的能力。

通过热重特征和X射线衍射图检查了通过该新系统获得的羟基磷灰石-氧化锆。此外,分析其表面成骨细胞生长和矿化的能力。通过X射线衍射分析,我们清楚地表明不需要高温处理。另外,可以在650℃下形成四方锆。增殖试验表明,成骨细胞的生长不受任何评估的复合材料的影响。关于成骨标记物Col1,与HZ600和HZ700相比,HZ650的表达增加了2倍。有趣的是,在HZ650上生长的成骨细胞显示出球状分泌物,覆盖着胶原蛋白束和富含钙的细胞外基质,而HZ600和HZ700没有显示出磷酸盐或钙沉积物。

总之,这项研究表明,在650°C下可能生成稳定的四方锆,并且所得的HZ650复合材料能够促进合适的成骨细胞矿化过程。

原始出处:

Bermudez-Reyes B, Lara-Banda M, et al., Effect on growth and osteoblast mineralization of hydroxyapatite-zirconia (HA-ZrO2) obtained by a new low temperature system. Biomed Mater. 2017 Dec 22. doi: 10.1088/1748-605X/aaa3a4.

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    2019-12-04 yahu
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    2020-09-13 sunylz
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    2019-10-17 zhaojie88
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