抗血小板剂在生理流量条件下抑制血小板粘附和聚合在玻璃表面:向微流体血小板功能检测而不是额外的粘附蛋白修饰
Zhanshu Liu1, Xiaojing Huang2, Xuemei Gao2
1Department of Hematology, Yongchuan Hospital, Chongqing Medical University, Chongqing, China.
Journal of cardiovascular pharmacology
|November 30, 2023
概括
一种新的微流体方法通过测量在流下血小板粘附和聚合来量化抗血小板药物的有效性. 这项技术有助于评估药物预防血栓的有效性.
科学领域:
- 生物医学工程 生物医学工程
- 心血管研究研究心血管研究
- 药理学 药理学是指药理学的学科.
背景情况:
- 动脉血栓症的发病包括血小板粘附和聚合.
- 抗血小板剂对于预防血栓栓塞事件至关重要.
- 现有的方法可能需要蛋白质修改用于血小板功能分析.
研究的目的:
- 开发一种微流体方法来量化抗血小板药物对血小板粘附和聚合的影响.
- 在没有额外的蛋白质修改的情况下,在生理流动条件下评估血小板功能.
- 评估各种抗血小板药物和组合的抑制作用.
主要方法:
- 使用软光刻法制造聚二甲基西洛玻璃微流体芯片.
- 从健康志愿者和患者的血液样本分析在生理流程下 (300和1500秒-1).
- 使用时间到2.5%的覆盖率 (Ti),表面覆盖率 (A 150s) 和平均光强度 (F 150s) 来量化血小板粘附和聚合.
主要成果:
- 阿司匹林和其他药物 (阿尔普拉斯塔迪尔,蒂卡格勒罗尔,埃普蒂菲巴提德,蒂罗菲班) 证明了剂量依赖的血小板聚合抑制.
- 组合疗法 (阿司匹林和提卡格雷勒) 显示出协同抑制作用.
- GPIb-IX-von威莱布兰德因子抑制剂表现出部分抑制,在较高的剪切率下更明显.
- 患者数据证实了阿司匹林和/或克洛皮多格雷尔抑制血小板功能.
结论:
- 开发的微流体技术有效量化了抗血小板药物抑制血小板粘附和聚合的作用.
- 这种方法为在临床环境中评估抗血小板药物的疗效提供了有价值的工具.
- 它为微流体血小板功能检测提供了一种新的方法,而不需要粘合蛋白修改.
相关概念视频
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
532
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...
532
Formation of the Platelet Plug
6.4K
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...
6.4K
Anticoagulant Drugs: Low-Molecular-Weight Heparins
711
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...
711
Clot Retraction and Fibrinolysis
6.2K
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.
6.2K
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
188
Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
188
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


