红细胞对血栓形成的直接影响取决于组织因子和与膜脂蛋白的相互作用
Adam D Price1, Ryan C Chae, Taylor E Wallen
1From the Department of Surgery, University of Cincinnati, Cincinnati, Ohio.
The journal of trauma and acute care surgery
|April 12, 2024
概括
组织因子和协同增加红细胞聚集和血栓形成. 在红细胞上暴露的脂素 (PS) 调解了这种不依赖年龄的聚合,这对于理解血栓形成至关重要.
科学领域:
- 血液学 血液学 血液学
- 血栓形成研究研究
- 细胞生物学 细胞生物学
背景情况:
- 红细胞 (RBC) 参与了血栓形成和输血后高凝血能力的启动.
- 血清组织因子 (TF) 的升高与急性创伤有关.
- 红细胞膜上的脂素 (PS) 是一种前血栓性因子.
研究的目的:
- 为了研究这种假设,即红细胞聚合取决于暴露的PS,细胞外和TF之间的相互作用.
- 为了确定PS在/TF诱导的红细胞聚合中的作用.
主要方法:
- 人类全血,红细胞和富血小板血经过了与各种激动剂的聚合计.
- 红细胞被测试用和TF激动剂,以及Annexin V (一种PS阻断剂),其次是/TF.
- 红细胞通过体外肺微循环模型进行 perfused.
主要成果:
- 与全血和PRP相比,单独TF显著增加了红细胞聚合.
- 结合和TF协同增强了红细胞聚合.
- 素V的预处理显著降低了TF/诱导的红细胞聚合.
- 在微循环模型中,TF +暴露减少了血栓形成的时间.
结论:
- TF和协同诱导红细胞聚合.
- 暴露的PS在TF/介导的,年龄独立的红细胞聚合中起着关键作用.
- 在体外,TF+处理的红细胞在体外更快地形成血栓.
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