在患有轻度至中度出血障碍的患者中,活性蛋白C和自由蛋白S
Dino Mehic1, Theresa Schramm1, Birgit Forstner-Bergauer1
1Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria.
Thrombosis research
|February 7, 2024
概括
患有原因不明的出血障碍的患者表现出较高水平的活性蛋白C (APC),一种天然抗凝剂. 这一发现可能解释出血倾向,并建议BDUC.新的治疗点.
科学领域:
- 血液学 血液学 血液学
- 凝血科学 凝血科学
- 生物化学 生物化学
背景情况:
- 在轻度至中度出血障碍 (MBD) 中,特别是原因不明的出血 (BDUC) 中,出血的机制尚不清楚.
- 天然抗凝剂,活性蛋白C (APC) 和自由蛋白S (PS) 在MBD和BDUC中的作用以前没有被研究过.
研究的目的:
- 在患有MBD和BDUC的患者中量化APC和PS的抗原水平.
- 探索APC和PS水平与临床出血特征,严重程度和整体静血能力之间的关联.
主要方法:
- 分析了来自维也纳出血生物库 (VIBB) 的262名患者和61名健康对照 (HC) 的队列.
- 使用ELISA测量APC和自由PS的抗原水平.
主要成果:
- 与HC相比,MBD患者的调整APC抗原水平明显高于MBD患者,最显著的是BDUC组.
- 在患者和HC之间没有观察到PS抗原水平的显著差异.
- 在APC或PS水平和出血严重程度或全球静血/血栓生成测试之间没有发现相关性,尽管APC在BDUC中显示出与更快的血凝块形成动力学具有矛盾的弱相关性.
结论:
- 在患有BDUC.的患者中存在升高的APC抗原水平.
- 增加APC可能会导致一些BDUC患者的出血倾向.
- 在未来,APC可能成为BDUC.的潜在治疗点.
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