Tissue Eng Part A:非晶硅氧氮化磷涂层植入物促进内皮细胞的血管生成活性

2019-05-23 不详 网络

缺乏骨整合是无菌松动和骨替代植入物失败的主要原因。涂有血管生成生物材料的植入物可以改善骨整合并可能减少这些并发症。已显示硅和磷基材料可上调血管生成因子的表达并改善内皮细胞功能。在本研究中,我们假设通过使用等离子体增强化学气相沉积(PECVD)技术以SiONP形式涂覆无定形二氧化硅基涂层的植入物可以在体外增强人脐静脉内皮细胞(HUVEC)的血管生成特性。测试组是玻璃盖玻片(GCS),组织培养板(TC

缺乏骨整合是无菌松动和骨替代植入物失败的主要原因。涂有血管生成生物材料的植入物可以改善骨整合并可能减少这些并发症。已显示硅和磷基材料可上调血管生成因子的表达并改善内皮细胞功能。

在本研究中,我们假设通过使用等离子体增强化学气相沉积(PECVD)技术以SiONP形式涂覆无定形二氧化硅基涂层的植入物可以在体外增强人脐静脉内皮细胞(HUVEC)的血管生成特性。测试组是玻璃盖玻片(GCS),组织培养板(TCP),SiON,SiONP1(O:7.3at%)和SiONP2(O:14.2at%)植入物。

接过年时,SiONP2组合物显示出比GCS多3.5倍的纤连蛋白沉积(p <0.001)。与其他组相比,SiONP2组毛细管的长度和厚度也有显着改善(p <0.01)。在24小时,我们观察到血管内皮生长因子A(VEGF-A),缺氧诱导因子-α(HIF-1a),血管生成素-1(Ang-1)和nesprin-2至少上调2倍,在SiONP1和SiONP2组中更明显。

总之,本研究所制备的无定形二氧化硅涂层植入物,尤其是SiONP2组合物,可以在体外增强内皮细胞的血管生成特性,并且可以诱导更快的骨整合和愈合。

原始出处:

Monte F, Awad KR, et al., Amorphous Silicon Oxynitrophosphide Coated Implants Boost Angiogenic Activity of Endothelial Cells. Tissue Eng Part A. 2019 May 2. doi: 10.1089/ten.TEA.2019.0051.

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    2019-12-04 xuyu
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    2019-11-10 spoonycyy
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    2019-05-25 zhaojie88
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    2019-05-25 jiyangfei