基于奇托桑/万科米辛纳米颗粒的涂层:在水-二氧化碳双相系统中的形成模式和体内稳定性
Ivan S Chaschin1, Evgenii I Perepelkin2, Maria A Sinolits3
1Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova, Moscow 119991, Russian Federation; Bakulev Scientific Center for Cardiovascular Surgery, 135 Rublevskoe Sh., Moscow 121552, Russian Federation.
International journal of biological macromolecules
|August 22, 2024
概括
这项研究开发了用于生物假肢心脏门涂层的化纳米颗粒. 这种新型涂层有效地抑制S. aureus生物膜的生长,同时保持组织完整性并显示受控的抗生素释放.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 药物输送系统 药物输送系统
背景情况:
- 生物假体心脏门易受细菌感染,尤其是黄金菌的感染.
- 素纳米颗粒为药物输送和抗菌涂层提供了一个有前途的平台.
- 开发有效的涂层来保持组织完整性并防止生物膜的形成至关重要.
研究的目的:
- 为了研究在异心脏组织上形成的康胺化奇托桑纳米颗粒及其涂层.
- 评估这些涂料在防止黄金葡萄球菌生物膜形成方面的有效性.
- 评估涂层对组织机械性能和生物降解的影响.
主要方法:
- 纳米粒子产量和封装效率的放射性指标.
- 谱光计和高分辨率显微镜用于涂层表征.
- 涂层组织的机械测试和组织学分析.
- 在老鼠模型中进行体内生物降解研究.
主要成果:
- 化纳米颗粒与万科米辛合,成功合成了高产量 (~85%) 和封装效率 (~30%).
- 异心脏组织上的涂层证明了原纤维与60nm纳米颗粒的完全覆盖.
- 涂层保持了机械强度,完全抑制了金黄色细菌生物膜,并在酸化时显示出受控的万科米辛释放.
- 生物降解研究表明,与奇托桑相比,万科米辛在纳米颗粒中的降解速度较慢.
结论:
- 添加了万科米辛的奇托桑纳米颗粒形成了生物假体心脏门的有效抗菌涂层.
- 这些涂层可以增强对S. aureus生物膜的组织保护,而不会损害机械完整性.
- 控制释放和降解速度较慢的万科米辛有助于持续的抗微生物活性.
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