聚硫膜的柔性内表面防止了血小板粘合蛋白的吸附,并改善了体外抗血栓性
Ryo Takatsuji1, Masahide Koremoto1, Yoko Fujimoto1
1Asahi Kasei Medical Co., Ltd., Japan.
The International journal of artificial organs
|September 4, 2024
概括
血液透析器中空纤维上的维生素E涂层通过增强内部表面的灵活性来改善血液的兼容性. 这减少了血小板损失和蛋白质吸附,这表明透析的性能更好.
科学领域:
- 生物材料科学 生物材料科学
- 血液透析技术 血液透析技术
- 表面化学 表面化学
背景情况:
- 血液透析器中空洞纤维的内部表面状况对于血液相容性至关重要.
- 了解表面特性,如厚度和柔软度,是改善透析器件性能的关键.
研究的目的:
- 为了研究空心纤维的内部表面特征如何影响血液透析器血液兼容性.
- 评估不同涂层对空心纤维膜的物理性质和血液兼容性的影响.
主要方法:
- 使用扫描探针显微镜/原子力显微镜 (SPM/AFM) 来评估内部表面层的厚度和软度.
- 在体外测试血液兼容性,通过在动态刺激下将各种涂层的透析器暴露在没有循环的血液中.
主要成果:
- 维生素E涂层的多硫 (PS) 膜的厚度和柔软度比纤维素三酸和PS膜的多烯 (PVP) 厚度和柔软度更高.
- 与NV聚合物涂层相比,以维生素E涂层的透析剂显著降低了血小板减少,β-血小板球蛋白 (β-TG) 和血小板因子4 (PF4) 水平.
- 在维生素E涂层的内部表面上,总蛋白质,纤维素和·威尔布兰德因子 (vWF) 的吸附率明显较低.
结论:
- 空洞纤维膜内部表面的体外灵活性会影响血液凝固性能.
- 维生素E涂层显示出优异的血红相容性,需要进一步研究.
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