聚氨酯人工血管生物材料表面改性的策略进展

doi:10.24920/004178

摘要/Abstract

摘要：

血管转流术是矫治血管缺损或良性狭窄的重要手段。由于自体血管或同种异体血管的来源有限，因此，临床上将人工血管生物材料作为重要的移植替代物。由移植物引起的蛋白质、血小板和细菌黏附，造成的移植血管狭窄、血栓形成及术后感染是血管转流术的主要并发症。聚氨酯是一种常用的人工血管生物材料。为了抵抗由移植物引起的蛋白质、血小板和细菌黏附，促进内皮细胞黏附，研究人员对聚氨酯材料进行了一系列的表面改性，以降低移植后受者的血栓形成风险。本综述总结了聚氨酯人工血管生物材料的表面改性机制及其策略。

关键词: 表面改性, 聚氨酯, 人工血管, 黏附

Abstract:

As the number of patients suffering from cardiovascular diseases and peripheral vascular diseases rises, the constraints of autologous transplantation remain unavoidable. As a result, artificial vascular grafts must be developed. Adhesion of proteins, platelets and bacteria on implants can result in stenosis, thrombus formation, and postoperative infection, which can be fatal for an implantation. Polyurethane, as a commonly used biomaterial, has been modified in various ways to deal with the adhesions of proteins, platelets, and bacteria and to stimulate endothelium adhesion. In this review, we briefly summarize the mechanisms behind adhesions, overview the current strategies of surface modifications of polyurethane biomaterials used in vascular grafts, and highlight the challenges that need to be addressed in future studies, aiming to gain a more profound understanding of how to develop artificial polyurethane vascular grafts with an enhanced implantation success rate and reduced side effect.

Key words: surface modification, polyurethane, vascular graft, adhesion

Huai-Gu Huang,Tao Xiang,Yue-Xin Chen. Current Strategies of Surface Modifications to Polyurethane Biomaterials for Vascular Grafts[J].Chinese Medical Sciences Journal, 2023, 38(4): 279-285.

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