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氨基氨基高正电荷层:基于静电相互作用的稳定和持久的替代品,用于应用,结合抗菌和生物特性
João Pedro Dos S Silva1,2, Mariana Mireski1, Irene Mallor-Solís3
1Department of Prosthodontics and Periodontology, Piracicaba Dental School, Universidade Estadual de Campinas (UNICAMP). Av. Limeira, 901, Piracicaba, São Paulo 13414-903, Brazil.
ACS applied bio materials
|September 23, 2025
概括
在植入物上的阴离子涂层中,3-aminopropyltriethoxysilane (APTES) 的较低度可以提高生物相容性,而不会改变静电性质. 这一发现对于开发更安全,更有效的抗微生物植入物表面至关重要.
科学领域:
- 生物材料科学 生物材料科学
- 表面化学 表面化学
- 纳米技术 纳米技术
背景情况:
- 植入物的阴离子涂层提供了一种具有成本效益的,无抗生素的抗菌策略.
- 3-aminopropyltriethoxysilane (APTES) 用于在氧化表面上制造这些涂层.
- APTES度对表面特性和生物相容性的影响尚不清楚.
研究的目的:
- 为了研究变化的APTES度在阴离子涂层如何影响的静电行为.
- 评估APTES度对细菌相互作用和介质干细胞 (MSC) 反应的影响.
- 为了确定细胞相容和抗微生物植入物涂层的最佳APTES度.
主要方法:
- 圆盘经历了血电解氧化 (PEO),然后在不同度 (83.8,167.6,251.4毫米) 的APTES处理.
- 表面特征包括SEM,EDS,XPS,FTIR,XRD,接触角度,Zeta电位和形状测量.
- 用MSC进行了微生物学测定 (细菌粘附,生物膜形成) 和细胞培养研究 (新陈代谢,活力).
主要成果:
- 经过PEO处理,会产生多孔表面;APTES的化会增加粗性和疏水性.
- 证实了XPS和Zeta潜在的氨基存在和表面电荷变化,但增加APTES并没有比例地增加离子密度.
- 阴离子涂层显著降低了细菌粘附和生物膜的形成,而较低的APTES度促进了MSC的新陈代谢和生命力.
结论:
- APTES度不会对表面阴离子密度或静电性质产生比例的影响.
- 较低的APTES度对于在上实现细胞相容的阴离子涂层至关重要.
- 这些发现指导了改进的,更安全的生物医学植入物涂层的开发,具有抗微生物有效性.
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