PPARalpha激活剂抑制了人体单细胞中的组织因子表达和活性
N Marx1, N Mackman, U Schönbeck
1Department of Internal Medicine II-Cardiology, University of Ulm, Germany. nikolaus.marx@medizin.uni-ulm.de
Circulation
|February 24, 2001
概括
过氧体增殖器激活受体α (PPARalpha) 激活剂降低了人体单细胞中的组织因子 (TF) 表达和活性. 这一发现表明了减少动脉样硬化病变中血栓发生力的潜在治疗策略.
科学领域:
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 单细胞/巨细胞上的组织因子 (TF) 在急性冠状动脉综合征中启动血栓形成.
- 过氧体增殖器激活受体-α (PPARalpha) 调节基因表达.
- PPARalpha激活剂可能会降低患者的TF活性.
研究的目的:
- 调查PPARalpha激活剂是否可以限制人类单细胞细胞的TF反应.
- 探索PPARalpha激活剂影响TF表达的机制.
主要方法:
- 人类单细胞和巨细胞用PPARalpha激活剂 (WY14643,ETYA) 进行治疗.
- 脂聚糖 (LPS) 用于诱导TF活性和表达.
- 测量了TF活性,蛋白质,mRNA和促进剂活性.
- 评估了核因子-kappaB (NF-κB) 的结合和活性.
主要成果:
- PPARalpha激活剂显著降低了LPS诱导的TF活性和单细胞/巨细胞中的表达.
- PPARgamma激活剂没有表现出类似的效果.
- WY14643降低了瘤亡因子-α蛋白,并抑制了LPS诱导的TF促进体活性,可能是通过NF-κB抑制.
结论:
- PPARalpha激活剂有效地降低了人体单细胞/巨细胞中的TF表达和活性.
- 这些发现表明PPARalpha激活剂在降低动脉样硬化病变血栓发生性方面可能发挥作用.
- 这些数据提供了关于PPARalpha激活化合物如何影响动脉瘤的见解.
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