相关实验视频
Updated: Jun 21, 2025

06:47
Microfluidics in Assessing Platelet Function
Published on: November 8, 2024
832
提卡格勒勒在P2Y12受体上增加了其自身的功效,通过直接改变血血小板中的血膜脂质序列
Kyrylo Pyrshev1,2,3, Florentin Allemand4,5, Vahideh Rabani4
1Department of Neurochemistry, Palladin Institute of Biochemistry of the NAS of Ukraine, Kyiv, Ukraine.
British journal of pharmacology
|July 17, 2024
概括
蒂卡格勒罗尔是一种抗血栓药物,它改变了血小板膜的脂质顺序,增强了它的抗血小板功效. 这种双重机制涉及直接的P2Y12受体结合和脂质双层相互作用.
科学领域:
- 药理学 药理学是指药理学的学科.
- 生物物理学的生物物理.
- 心血管研究研究心血管研究
背景情况:
- 提卡格勒是一种广泛使用的抗血栓性药物,具有已知的两性质.
- 它作为一种与脂质双层相互作用的膜otropic 剂的潜力,独立于受体结合是未被探索的.
研究的目的:
- 为了研究蒂卡格勒对血小板血脂质的影响.
- 为了确定这种调制是否会影响Ticagrelor在P2Y12受体中的功效.
主要方法:
- 结合了in-situ,in-vitro和in-silico方法. 这三种方法.
- 利用先进的光探针NR12S研究血小板和囊泡中的脂质顺序.
- 采用了模型脂质双层的分子动力学模拟.
- 评估的剂量-反应Ticagrelor与改变的脂质顺序.
主要成果:
- 蒂卡格勒勒自发地融入脂质双层,以度依赖的方式影响膜脂质秩序.
- 血小板血脂质顺序的增加与tcagrelor的IC50较低相关.
- 提卡格勒勒的膜内嵌增强了其在P2Y12受体上的功效,通过增加血小板膜的顺序.
结论:
- 提出了一种新的双重Ticagrelor作用机制.
- 这种机制结合了直接的P2Y12受体结合与受体脂质微环境的调节.
相关概念视频
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
510
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...
510
Formation of the Platelet Plug
5.7K
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...
5.7K
Clot Retraction and Fibrinolysis
5.4K
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.
5.4K
Anticoagulant Drugs: Low-Molecular-Weight Heparins
668
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...
668
IP3/DAG Signaling Pathway
12.0K
Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and...
12.0K
Intracellular Signaling Affects Focal Adhesions
2.7K
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
2.7K

