通过sol-gel化学,通过表面局部释放氧化
Mary E Robbins1, Mark H Schoenfisch
1Department of Chemistry, University of North Carolina at Chapel Hill, 27599, USA.
Journal of the American Chemical Society
|June 6, 2003
概括
释放氧化 (NO) 的微型表面通过减少血小板粘附来提高医疗植入物的血液兼容性. 这种局部的NO释放提高了植入物性能,同时允许其他表面功能.
科学领域:
- 生物材料科学 生物材料科学
- 表面化学 表面化学
- 医疗设备工程 医疗设备工程
背景情况:
- 从聚合物表面释放的氧化 (NO) 有效地抑制了血小板粘附,改善了医疗植入物的血液兼容性.
- 目前的方法可能不允许局部NO释放,限制了基板对传感器等额外应用的实用性.
- 开发用于可控NO输送的图案表面对于先进的生物医学应用至关重要.
研究的目的:
- 为局部释放氧化 (NO) 创造和表征微型图案表面.
- 为了评估这些新型基质的稳定性,NO表面流量和抗血小板粘附性质.
- 评估这些表面在医疗植入物中增强血液兼容性的潜力.
主要方法:
- 利用微型图案技术设计无释放表面.
- 使用含有aminosilane的甲基trimethoxysilane溶凝制备的基板.
- 特点是表面稳定性,NO表面流量,以及体外血小板粘附阻力.
主要成果:
- 成功制备了稳定的微型模式的NO释放基板.
- 从sol-gel微型模式中显示局部NO释放.
- 与对照组相比,在NO释放基板上观察到显著降低的体外血小板粘附.
结论:
- 从sol-gel微模式释放的局部表面NO增加了血液的兼容性.
- 微模式的NO释放基板为开发先进的医疗植入物提供了有前途的战略.
- 这种方法保留了潜在的基板功能,以便与其他应用程序 (如传感器) 进行潜在的集成.
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