在慢性血栓栓塞性肺高血压中的克隆性血液形成
Mizuki Momoi1, Yoshinori Katsumata1,2, Hiroyoshi Kunimoto3
1Department of Cardiology Keio University School of Medicine Tokyo Japan.
Journal of the American Heart Association
|November 27, 2024
概括
克隆性血液形成 (CH) 在慢性血栓栓塞性肺高血压 (CTEPH) 患者中普遍存在,与较差的结局和较高的凝血风险相关. 这表明CH可能通过中性粒细胞激活驱动CTEPH病原体.
科学领域:
- 心脏病学 心脏病学
- 血液学 血液学 血液学
- 肺部病理学 肺部病理学
背景情况:
- 慢性血栓栓塞性肺高血压 (CTEPH) 的病因尚不清楚.
- 克隆性血液形成 (CH) 与心血管和血栓塞栓性疾病有关.
- 这项研究研究了CH的患病率及其在CTEPH患者中的临床意义.
研究的目的:
- 确定诊断为慢性血栓栓塞性肺高血压 (CTEPH) 的患者中克隆性血液形成 (CH) 的患病率.
- 研究CH对CTEPH患者结果和治疗反应的临床影响.
- 探索潜在的致病机制,通过这些机制,CH会导致CTEPH.
主要方法:
- 在214名CTEPH患者中使用了全外和深面板测序.
- 在患有和没有CH的患者之间比较了治疗前和治疗后的临床数据.
- 进行了RNA测序和血清分析,以阐明与CH相关的病变发生.
主要成果:
- 在20.1%的CTEPH患者中发现了CH变异,在老年人群中患病率更高 (44.4%在80-89岁).
- 患有CH的患者表现出明显更高的B型尿素水平,增加了家庭氧疗率,并在治疗后减少了6分钟的步行距离.
- CH与更频繁的肺动脉凝块改造,额外的血管塑性事件,丰富的血液凝结和中性粒细胞外细胞陷途径,以及高血清素化组合素H3水平有关.
结论:
- 克隆性血液形成 (CH) 可能通过中性粒细胞激活和细胞外陷的形成促进CTEPH的原血栓状态.
- 这些机制可能有助于在CTEPHCH患者中观察到的致病性和治疗反应减弱.
- 即使在没有血液学疾病史的患者中,研究结果也是一致的.
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