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Related Concept Videos

Structure and Function of Platelets01:18

Structure and Function of Platelets

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, with...
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

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...
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

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...
G Protein-coupled Receptors01:15

G Protein-coupled Receptors

G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
G Protein-coupled Receptors01:15

G Protein-coupled Receptors

G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:

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Related Experiment Video

Updated: May 19, 2026

Analyzing Platelet Subpopulations by Multi-color Flow Cytometry
08:04

Analyzing Platelet Subpopulations by Multi-color Flow Cytometry

Published on: June 10, 2025

Platelet receptors.

Alexandre Kauskot1, Marc F Hoylaerts

  • 1Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium.

Handbook of Experimental Pharmacology
|August 25, 2012
PubMed
Summary
This summary is machine-generated.

This review details traditional and novel platelet receptors, exploring their biochemical functions and clinical significance. Understanding these receptors is crucial for diagnosing and treating platelet-related disorders.

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Analyzing Platelet Subpopulations by Multi-color Flow Cytometry
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Area of Science:

  • Hematology
  • Molecular Biology
  • Biochemistry

Background:

  • Platelets play a critical role in hemostasis and thrombosis.
  • Platelet receptors mediate crucial cellular functions.
  • Understanding platelet receptor biology is essential for managing bleeding and clotting disorders.

Purpose of the Study:

  • To provide a comprehensive overview of both well-characterized and newly identified platelet receptors.
  • To detail the biochemical properties and functional roles of these receptors.
  • To highlight the clinical relevance of platelet receptor variations.

Main Methods:

  • Literature review of established and emerging research on platelet receptors.
  • Biochemical characterization of receptor structure, ligands, and protein interactions.
  • Analysis of clinical data, including mutations and polymorphisms affecting receptor function.

Main Results:

  • Detailed descriptions of traditional and novel platelet receptors.
  • Elucidation of receptor mechanisms, including ligand binding and signal transduction.
  • Correlation of specific receptor alterations with clinical syndromes and disease states.

Conclusions:

  • Platelet receptors, both traditional and novel, are vital for hemostasis and thrombosis.
  • Biochemical and clinical insights into these receptors are advancing the understanding of platelet function.
  • Further research into platelet receptor dynamics holds promise for therapeutic interventions.