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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...

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Related Experiment Video

Updated: Jun 5, 2026

Microfluidics in Assessing Platelet Function
06:47

Microfluidics in Assessing Platelet Function

Published on: November 8, 2024

Understanding and evaluating platelet function.

Lawrence Brass1

  • 1Hematology-Oncology Division, Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19004, USA. Brass@mail.med.upenn.edu

Hematology. American Society of Hematology. Education Program
|January 18, 2011
PubMed
Summary
This summary is machine-generated.

Platelets are crucial for hemostasis and vascular disease, but new research reveals their roles in inflammation, tumor growth, and development. Understanding platelet function and assessment tools is key.

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Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor
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Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor

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A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
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A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

Published on: February 14, 2017

Related Experiment Videos

Last Updated: Jun 5, 2026

Microfluidics in Assessing Platelet Function
06:47

Microfluidics in Assessing Platelet Function

Published on: November 8, 2024

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor
06:32

Dynamic Multiparameter Platelet Function Assessment Using a Capacitive Biosensor

Published on: May 2, 2025

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
09:38

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

Published on: February 14, 2017

Area of Science:

  • Hematology
  • Molecular Biology
  • Cell Biology

Background:

  • Platelets are well-known for their role in hemostasis and vascular diseases.
  • Emerging research highlights their involvement in inflammation, tumor angiogenesis, and embryonic development.
  • Significant gaps remain in understanding platelet activation at single-cell and molecular levels.

Purpose of the Study:

  • To provide an overview of current knowledge on in vivo platelet function mechanisms.
  • To summarize emerging concepts that are reshaping older views on platelet biology.
  • To evaluate the strengths and weaknesses of clinical tools for assessing platelet function and antiplatelet agent efficacy.

Main Methods:

  • Literature review of current platelet research.
  • Analysis of emerging scientific concepts in platelet biology.
  • Evaluation of clinical assessment tools for platelet function.

Main Results:

  • Established roles of platelets in hemostasis and vascular disease.
  • New insights into platelet contributions to inflammation, tumor angiogenesis, and development.
  • Discussion of limitations and strengths of current clinical platelet function assays.

Conclusions:

  • Further research is needed to fully elucidate platelet roles beyond hemostasis.
  • Advanced understanding of platelet mechanisms requires exploring single-cell and molecular dynamics.
  • Optimizing clinical tools is essential for accurate platelet function assessment and therapeutic evaluation.