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Updated: Jan 29, 2026
09:13
Turbidimetry on Human Washed Platelets: The Effect of the Pannexin1-inhibitor Brilliant Blue FCF on Collagen-induced Aggregation
Published on: April 6, 2017
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Platelet aggregation induced by polystyrene and platinum nanoparticles is dependent on surface area
Fatima Zia1,2, Michaela Kendall3, Steve P Watson2,4
1School of Chemical Engineering, College of Engineering and Physical Sciences, University of Birmingham B15 2TT, UK.
RSC Advances
|February 5, 2019
Summary
Nanoparticle surface area, not size, drives platelet activation and aggregation. This occurs via passive agglutination and integrin αIIbβ3 activation, involving Src and Syk tyrosine kinases.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Hematology
Background:
- Nanoparticles are crucial in medicine and industry.
- Understanding nanoparticle-biomaterial interactions, especially with blood platelets, is vital.
- Mechanisms of nanoparticle-induced platelet activation and aggregation require further elucidation.
Purpose of the Study:
- To investigate the role of nanoparticle physicochemical properties in platelet activation.
- To determine whether nanoparticle size or surface area is critical for platelet effects.
- To elucidate the molecular pathways involved in nanoparticle-mediated platelet aggregation.
Main Methods:
- Utilized negatively charged polystyrene nanoparticles (25-201 nm) and platinum nanoparticles (7-73 nm).
- Assessed nanoparticle effects on platelet aggregation and activation.
- Investigated the involvement of integrin αIIbβ3, Src, and Syk tyrosine kinases.
Main Results:
- Nanoparticle surface area, not size, was identified as the critical factor in platelet activation.
- Nanoparticles induced platelet aggregation through passive agglutination.
- Activation of integrin αIIbβ3 was observed, mediated by Src and Syk tyrosine kinases.
Conclusions:
- Nanoparticle surface area is a key determinant of platelet response.
- Nanoparticle-induced platelet activation involves specific molecular signaling pathways.
- Findings advance understanding of nanoparticle-blood interactions for biomedical applications.
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