相关实验视频
Updated: Jul 19, 2025

10:37
Ferric Chloride-induced Murine Thrombosis Models
Published on: September 5, 2016
21.8K
血溶性葡萄糖蛋白VI,血小板功能,出血和缺血事件在接受选择性皮肤冠状动脉干预的患者中
Shqipdona Lahu1, Kristin Adler2, Katharina Mayer1,3
1Department of Cardiology, Deutsches Herzzentrum München, Technische Universität München, Munich, Germany.
Thrombosis and haemostasis
|August 17, 2023
概括
在接受PCI的慢性冠状动脉综合征患者中,可溶性葡萄糖蛋白VI (sGPVI) 水平没有预测缺血事件. 较高的sGPVI水平与术后出血风险增加有关.
科学领域:
- 心血管医学 心血管医学
- 血液学 血液学 血液学
- 血小板生物学 血小板生物学
背景情况:
- 葡萄糖蛋白VI (GPVI) 是主要的血小板原体受体.
- 流放GPVI产生可溶性GPVI (sGPVI),这是一个内源机制,以限制血小板过度刺激.
- 慢性冠状动脉综合征 (CCS) 患者接受皮肤冠状动脉干预 (PCI) 的sGPVI的作用及其对临床结果的预测价值以前未被研究.
研究的目的:
- 在经过皮肤冠状动脉干预 (PCI) 的慢性冠状动脉综合征 (CCS) 患者中调查可溶性葡萄糖蛋白VI (sGPVI) 水平.
- 评估基线sGPVI水平与血小板功能之间的关联.
- 评估sGPVI作为PCI后缺血和出血风险的预测因素的潜力.
主要方法:
- 在接受PCI的318名CCS患者中测量了基线血sGPVI水平.
- 使用腺二酸盐 (ADP) 和原刺激来评估血小板聚合.
- 同主终点包括在48小时内死亡或心肌损伤的复合结果和30天内出血学术研究联盟 (BARC) 1-5型出血.
主要成果:
- 在基线或PCI后,sGPVI水平和血小板功能之间没有发现显著的相关性.
- 基线sGPVI水平没有预测缺血风险;缺血事件的发病率在sGPVI第三种动物中相似 (p=0.82).
- 在sGPVI水平和出血风险之间观察到显著的非线性关系,较高的sGPVI三位数显示出出血发生率增加 (p=0.006).
结论:
- 在接受PCI的CCS患者的血sGPVI水平与ADP或原诱导的血小板聚合无关.
- 基线sGPVI水平升高可能表明PCI后30天内出血风险增加.
- 在这个患者群体中,sGPVI似乎不是过度缺血事件的预测因素.
相关概念视频
Formation of the Platelet Plug
6.7K
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
6.7K
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
562
Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
562
Structure and Function of Platelets
1.2K
The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
1.2K
Anticoagulant Drugs: Low-Molecular-Weight Heparins
751
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
751
Introduction to Hemostasis
8.3K
Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized,...
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized,...
8.3K
Clot Retraction and Fibrinolysis
6.5K
After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
6.5K

