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Related Experiment Video

Updated: Jul 16, 2026

Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells

Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells

Published on: October 27, 2009

Molecular mechanisms of platelet aggregation.

L Leung, R Nachman

Annual Review of Medicine

|January 1, 1986

Summary

Platelet stimulation activates fibrinogen receptors, initiating reversible aggregation. A strong stimulus releases thrombospondin, stabilizing aggregates into an irreversible phase.

Area of Science:

Hematology
Cellular Biology
Biochemistry

Background:

Platelet activation is crucial for hemostasis and thrombosis.
Fibrinogen receptors mediate platelet aggregation.
Platelet alpha-granules store key proteins involved in aggregation.

Purpose of the Study:

To elucidate the role of specific fibrinogen receptors in platelet aggregation.
To investigate the mechanism of primary and secondary platelet aggregation phases.
To understand the function of thrombospondin in stabilizing platelet aggregates.

Main Methods:

Studied platelet stimulation and receptor induction.
Analyzed fibrinogen binding to platelet membrane glycoprotein IIb-IIIa complex.
Investigated the release and function of thrombospondin from platelet alpha-granules.

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Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

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Last Updated: Jul 16, 2026

Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells

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Published on: October 27, 2009

Turbidimetry on Human Washed Platelets: The Effect of the Pannexin1-inhibitor Brilliant Blue FCF on Collagen-induced Aggregation

Turbidimetry on Human Washed Platelets: The Effect of the Pannexin1-inhibitor Brilliant Blue FCF on Collagen-induced Aggregation

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Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets

Published on: November 29, 2024

Main Results:

Platelet stimulation induces the glycoprotein IIb-IIIa complex, a fibrinogen receptor.
Fibrinogen binding to this complex triggers reversible primary aggregation.
Thrombospondin release during strong stimulation stabilizes aggregates, causing irreversible secondary aggregation.

Conclusions:

The glycoprotein IIb-IIIa complex is essential for initiating platelet aggregation.
Thrombospondin plays a critical role in the irreversible phase of platelet aggregation.
Understanding these mechanisms is key for developing anti-thrombotic therapies.