在患有胸痛患者的心肌缺血期间评估血栓素产生和补充激活
G Montalescot1, G Drobinski, J Maclouf
1Department of Cardiology, Hôpital Pitié-Salpétrière, Paris, France.
Circulation
|November 1, 1991
概括
患有稳定性心痛的患者在缺血期间表现出血栓素的增加,但没有观察到补体系统的激活. 这表明血素,而不是补充剂,在与心痛相关的心肌缺血中起作用.
科学领域:
- 心脏病学 心脏病学
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
背景情况:
- 补充系统和阿拉基酸代谢产物与心肌缺血有关.
- 实验数据表明C5a可能有助于血栓素的产生.
研究的目的:
- 在稳定胸痛患者的短暂心肌缺血期间调查C5a和血栓素的产生.
- 确定补体激活和血小板聚合在缺血诱导的血栓素释放中的作用.
主要方法:
- 在心房节拍或皮肤透光冠状动脉血管塑造过程中,在冠状动脉鼻血中评估C5a和血栓素B2水平.
- 在运动前后测试时测量尿液中的血栓素和前环素代谢物.
- 监测ST段变化和乳酸提取以评估缺血症严重程度.
主要成果:
- 节奏诱导性缺血增加了冠状动脉鼻血栓素B2水平,与乳酸提取变化相关.
- 在缺血期间没有检测到C5a,C3a或C5b-9的显著增加.
- 患有稳定性胸痛的患者表现出更高的尿动血栓素代谢物,表明慢性增加合成.
结论:
- 在稳定性胸痛中,在节奏诱导的心肌缺血期间,无论有显著的血小板聚合,血小板素都会急性释放.
- 补充系统的激活似乎没有参与稳定性心痛中的短暂缺血性发作.
- 在患有稳定性胸痛的患者中,血栓合成的慢性升高存在.
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