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尿液血清和溶液通过改变光滑肌肉细胞组织因子的稳定性增加了血管干预后血栓形成的风险
Vipul C Chitalia1, Sowmya Shivanna, Jordi Martorell
1Harvard-MIT Division of Science and Technology, Bldg E25-449, Massachusetts Institute of Technology, 77 Mass Ave, Cambridge, MA 02139, USA. vichital@mit.edu
Circulation
|December 28, 2012
概括
在慢性功能衰竭患者中,由于尿血增加组织因子 (TF) 稳定性,支架血栓 (ST) 风险较高. 这项研究揭示了尿液溶液延长了TF半衰期,这表明了对ST的新预防策略.
科学领域:
- 心血管生物学 心血管生物学
- 腎臟病學 (nephrology) 是一種醫學專業.
- 血栓形成的研究研究
背景情况:
- 支架血栓 (ST) 是一种具有高死亡率的危险并发症.
- 慢性功能衰竭和末期病 (ESRD) 是性传播病毒的重要危险因素.
- 连接ESRD与ST的基本机制仍然不清楚.
研究的目的:
- 研究尿素在血管光滑肌细胞 (vSMCs) 中调节组织因子 (TF) 中尿素的作用.
- 为了确定尿血是否有助于ESRD患者的术后血栓形成.
- 确定与增强血栓性相关的特定尿素因子和机制.
主要方法:
- 主要的人类vSMCs在用尿素血清或分离的尿素溶液进行预处理后暴露于冠状动脉类血流.
- 分析了TF的表达,活性,稳定性和翻译后修饰 (ubiquitination).
- 凝块形成被评估在一个流循环模型.
主要成果:
- 尿液血清显著增加了血栓形成,vSMC TF表达和TF活性.
- 隔离的尿素溶液 (英多-3-酸,硫酸,尿酸) 复制了这些原血栓效应.
- 尿素血清和特定溶液通过抑制其无处化,延长了TF半衰期.
结论:
- 尿素环境通过减少无处可见性来增加vSMC TF稳定性,从而促进血栓形成.
- 尿血中TF的翻译后调节是ESRD患者ST风险增加的潜在致病因素.
- 针对vSMC TF或将尿素溶液视为新型风险因素可能有助于预防ST.
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