从涂层中释放的边际 Zn2+ 过量对人类骨质细胞分化的影响
Michał Bartmański1, Łukasz Pawłowski1, Agata Knabe1
1Department of Biomaterials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-233 Gdańsk, Poland.
ACS applied materials & interfaces
|August 30, 2024
概括
植入物的素-纳米颗粒复合涂层显示了骨整合的潜力. 低离子度支持骨质细胞活动,而高度导致细胞死亡,表明可调节的治疗窗口.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 整形外科工程 整形外科工程
背景情况:
- 为植入物开发先进的涂层对于改善骨植入物集成至关重要.
- 和纳米粒子 (ZnNPs) 为生物医学应用提供了有前途的特性.
- 控制复合涂料中离子的释放对于生物相容性至关重要.
研究的目的:
- 在Ti13Zr13Nb基板上使用电泳沉积 (EPD) 制造奇托桑-ZnNP复合涂层.
- 评估释放的离子 (Zn2+) 对骨质细胞活力和功能的影响.
- 评估这些涂料在增强骨植入体融合方面的潜力.
主要方法:
- 阴极电泳沉积 (EPD) 用于制造素-ZnNP涂层.
- 分析了表面特性 (粗度,水友性).
- hFOB1.19 骨质细胞暴露在不同的Zn2+度 (0.125-0.175 mmol/L) 中,以评估细胞毒性,线粒体代谢,性酸酶和乳酸脱酶活性.
主要成果:
- 复合涂层成功地制造了使用优化的EPD参数 (低电压,短时间) 的减少不均性.
- 亚毒性Zn2+度 (0.125 mmol/L) 并没有损害骨质细胞活力或线粒体代谢,甚至增强了性酸酶和乳酸脱酶活动.
- 高度的Zn2+ (>0.175 mmol/L) 导致细胞因线粒体酶抑制而完全死亡.
结论:
- 素-ZnNP复合涂层是增强植入物特性的一种可行的选择.
- 可以控制Zn2+的释放,以在低度下促进骨质母细胞活动,这表明骨再生的潜力.
- 需要仔细控制Zn2+的释放,以避免在更高度下引起细胞毒性.
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