在人类冠状动脉动脉瘤中识别活性组织因子
J D Marmur1, S V Thiruvikraman, B S Fyfe
1Cardiovascular Institute, Mount Sinai School of Medicine, New York, NY 10029-6574, USA. jmarmur@smtplink.mssm.edu
Circulation
|September 15, 1996
概括
组织因子 (TF) 存在于大多数动脉样硬化病变中,有助于前凝活动和冠状动脉血栓形成. 抑留性病变中较低的TF表达可能会减少并发症,这表明TF抑制作为治疗点.
科学领域:
- 心血管生物学 心血管生物学
- 血栓形成研究研究
- 动脉样硬化病原体的产生
背景情况:
- 活体血栓形成与组织因子 (TF) 途径越来越相关.
- 人类冠状动脉动脉瘤中的TF活性在很大程度上未被报告.
研究的目的:
- 量化组织因子 (TF) 在人冠状动脉动脉瘤中的活性和表达.
- 为了研究TF与动脉样硬化病变中的血栓形成之间的关联.
- 为了探索TF表达的差异在de novo和restenotic病变.
主要方法:
- 定量TF特异性活性测定定向性冠状动脉切除术 (DCA) 标本上的定量TF特异性活性测定.
- 使用多克隆抗人类TF抗体检测TF抗原的免疫组织化学.
- 组织学分析以识别斑块血栓并评估TF表达在新生和静止性病变中.
主要成果:
- 中位 TF 含量为 10 ng/g 斑块,在 90% 的病变中可检测到 TF 活性.
- 在86%的病变中发现了TF抗原,存在于细胞和非细胞斑块区域.
- 组织学定义的血栓与可检测的TF抗原 (19/43病变;P <.02) 有意义地相关.
- 与新生病变 (8%;P <.05) 相比,在静脉性病变 (31%) 中检测到TF抗原的频率较低.
结论:
- TF对动脉样硬化病变的前凝活动有显著的贡献.
- TF的存在与斑块血栓有关,这表明它在冠状动脉血栓形成中起着作用.
- 抑留性病变中减少TF表达可能解释了较低的并发症率,突出了TF抑制作为一种潜在的治疗策略,以预防皮肤冠状动脉干预期间发生的血栓性并发症.
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