自然凝固启发RBCs-结构遗传微凝混合体的特点是几乎连续的结构用于交叉血静止
Weijun Ji1, Mengjie Dou2, Henan Ma3
1School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China.
新的带正电荷的密集交叉链结构遗传微凝 (PEDM) 提供了快速,稳定的结路出血的静血. 这种创新材料模仿了自然凝血,与血液形成了坚固的复合结构,以防止二次出血.
科学领域:
- 生物材料科学 生物材料科学
- 止血剂 止血剂 止血剂
- 再生医学是一种再生医学.
背景情况:
- 交叉出血是一个关键的医院前护理挑战,导致可预防的死亡的很大比例.
- 现有的静血材料难以同时提供高压阻力,快速静血和稳定的伤口阻塞.
- 运输过程中发生二次出血的风险需要改进的长期伤口保护策略.
研究的目的:
- 开发一种由自然凝固过程启发的新型静血材料.
- 创建一种能够快速,耐高压和稳定的血液静止的材料,用于结节出血.
- 使用微凝和血液研究准双连续复合结构 (Q-Bi CS) 的形成和特性.
主要方法:
- 制备带正电荷的密集交联结构遗传微凝 (PEDM).
- 研究PEDM与血液的相互作用,形成一个准双连续的复合结构 (Q-Bi CS).
- 在子大腿动脉和猪 iliac 动脉出血模型中评估静血性能,评估凝时间,压缩模量和粘附稳定性.
主要成果:
- 在与血液接触后的15秒内,PEDM会自我凝,从而启动快速的机械阻塞.
- PEDM-血液复合物 (Q-Bi CS) 在120秒内形成,与PEDM-PBS相比,压缩模量增加了5.4倍,确保了强大的阻塞.
- 在动物模型中实现了快速的血液静止,在子中在61秒内控制出血,在猪中在30秒内控制出血,并证明了稳定的动态粘附.
结论:
- PEDM有效地模仿自然凝血过程,以实现快速和稳定的血液静止.
- 通过将血液作为强化阶段纳入Q-Bi CS的形成克服了传统静血材料的局限性.
- PEDM显示出管理结节出血,减少可预防的死亡和防止运输期间的二次出血的巨大潜力.
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