冠状动脉组织等离子素激活剂释放受损与冠状动脉样硬化和吸烟有关:内皮功能障碍和动脉血症之间有直接联系
D E Newby1, A L McLeod, N G Uren
1Departments of Cardiology, University of Edinburgh, Royal Infirmary, United Kingdom. d.e.newby@ed.ac.uk
Circulation
|April 18, 2001
概括
冠状动脉斑块和吸烟会损害心脏释放组织等离子素激活剂 (tPA) 的能力. 这种减少的纤维分解能力与内皮功能障碍有关,可能会影响吸烟者的心脏病发作治疗.
科学领域:
- 心脏病学 心脏病学
- 血管生物学 血管生物学
- 血栓形成的原因之一是血栓形成.
背景情况:
- 动脉样硬化和吸烟是已知的心血管疾病的危险因素.
- 冠状动脉动脉瘤和吸烟对刺激组织等离子素激活剂 (tPA) 释放的影响尚未完全理解.
研究的目的:
- 为了研究近端冠状动脉动脉瘤和吸烟对心脏tPA的刺激释放的影响.
- 探索斑块负担,吸烟和局部纤维素分析能力之间的关系.
主要方法:
- 25名患者接受了冠状动脉扫描,近端LAD斑块体积由IVUS评估.
- 对物质P和酸的纤维溶解反应通过冠心输液和血液采样进行测量.
- 分析了冠状动脉血流和tPA抗原/活性.
主要成果:
- 在LAD中增加的斑块负担与活性tPA释放相反相关 (r=-0.61,P=0.003).
- 与非吸烟者相比,当前和前吸烟者显示,与非吸烟者相比,活性tPA的冠状动脉释放显著受损 (P<0.05).
- 药物P的输液增加了tPA的释放,而酸则增加了血液流动.
结论:
- 冠状动脉动脉瘤斑块负担和吸烟习惯与局部纤维溶解能力的降低有关.
- 研究结果表明,内源性纤维解,内皮功能障碍和动脉瘤之间存在联系.
- 这些因素可能解释了吸烟者的心肌梗塞中血栓抑制剂治疗疗效的差异.
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