通过喷雾制造的含有Ag的酸薄膜的抗菌作用
1Mechanical Systems Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan.
Bio-medical materials and engineering
|January 8, 2024
概括
这项研究使用喷雾开发了含银的酸 (HA) 薄膜,证明了对E. coli具有低细胞毒性的有效抗菌特性. 这些发现表明了改善骨科植入物的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 整形外科手术 整形外科手术
- 纳米技术 纳米技术
背景情况:
- 关节假肢感染在骨科中是一个重大挑战.
- 酸 (HA) 是一种具有很好的骨相容性的生物相容材料.
- 现有的抗菌HA涂层面临诸如骨折等局限性;喷雾涂层薄膜在牙科植入物中提供更高的密度和临床应用,但含有Ag的HA薄膜需要进一步研究.
研究的目的:
- 通过喷雾制备含银酸 (HA) 薄膜.
- 为了评估这些薄膜的抗菌效果.
- 为了评估含有Ag的HA薄膜的细胞毒性.
主要方法:
- 无线电频率磁铁喷射被用来制造含有Ag的HA薄膜.
- 电影的特征包括X射线光电子谱学,X射线衍光测量和扫描电子显微镜 (SEM).
- 评估了对E. coli的抗菌活性和对骨质细胞的细胞毒性.
主要成果:
- 薄膜中的Ag/Ca摩尔比率与目标材料中的Ag比率相关.
- SEM揭示了水热处理片上覆盖着球形颗粒的表面.
- 所有含有Ag的HA膜都表现出对E. coli的抗菌作用,随着Ag比率的增加,细胞数量下降. 经过热水处理的片显示出比被喷射的片更高的细胞数量.
结论:
- 通过喷制备的含有Ag的HA薄膜具有显著的抗菌特性.
- 这些膜对骨质细胞的细胞毒性较低,特别是在较低的银度下.
- 这些发现支持含有Ag的HA薄膜在骨科应用中对抗感染的潜力.
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