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Updated: Mar 20, 2026
09:49
Routine Screening Method for Microparticles in Platelet Transfusions
Published on: January 31, 2018
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[STRUCTURAL CHARACTERIZATION OF PLATELETS AND PLATELET-DERIVED MICROVESICLES]
Tsitologiia
|May 28, 2016
Summary
Platelet-derived macrovesicles are key in hemostasis and thrombosis. This study reveals new insights into their formation and structural diversity, influenced by different cell-activating stimuli.
Area of Science:
- Hematology
- Cell Biology
- Biophysics
Context:
- Platelet-derived macrovesicles are crucial for hemostasis and thrombosis.
- Their formation mechanisms and structural details are not fully understood.
- Understanding these microparticles is vital for various physiological and pathological states.
Purpose:
- To investigate the ultrastructure of human platelets and platelet-derived microvesicles.
- To analyze the intracellular origin, formation steps, structural diversity, and size distribution of these particles.
- To compare microvesicle formation induced by different stimuli: arachidonic acid, ADP, thrombin, and calcium ionophore A23187.
Summary:
- Transmission electron microscopy was used to examine platelets and microvesicles formed in vitro.
- Thrombin uniquely induced both plasma membrane vesiculation and cell fragmentation, forming microparticles with or without organelles.
- Microvesicle size ranged from 30 nm to 500 nm, with distributions varying based on the stimulus.
Impact:
- Provides novel information on platelet-derived macrovesicle formation and structural diversity.
- Enhances understanding of the multifaceted roles of these microparticles in health and disease.
- Contributes to the broader knowledge of cellular microparticle generation and function.
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