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Updated: Apr 14, 2026
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Preparation of Washed Human Platelets for Quantitative Metabolic Flux Studies
Published on: January 10, 2025
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Metabolic plasticity in resting and thrombin activated platelets.
Saranya Ravi1, Balu Chacko1, Hirotaka Sawada1
1Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America; UAB Mitochondrial Medicine Laboratory, University of Alabama at Birmingham, Birmingham, Alabama, United States of America; Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America.
Plos One
|April 16, 2015
Summary
Platelets utilize multiple fuel sources, including fatty acids and glutamine, for energy during aggregation. Glycolysis can compensate for other fuel sources, highlighting the metabolic flexibility of platelets.
Area of Science:
- Biochemistry
- Hematology
- Cellular Metabolism
Background:
- Platelet thrombus formation involves complex processes like aggregation and clot retraction.
- The specific metabolic fuels supporting these platelet functions remain unclear.
Purpose of the Study:
- To investigate the metabolic fuels supporting resting and thrombin-activated platelet aggregation.
- To determine the flexibility of fuel utilization in platelets.
Main Methods:
- Utilized platelets from healthy human donors.
- Assessed oxidative phosphorylation and glycolysis.
- Inhibited fatty acid oxidation, glutaminolysis, and glycolysis.
Main Results:
- Thrombin stimulation rapidly increased oxidative phosphorylation, requiring glutamine and fatty acids, but not glucose.
- Inhibition of fatty acid oxidation or glutamine utilization was compensated by increased glycolysis.
- Inhibitors of glycolysis reduced aggregation by approximately 50%; combined inhibition of glycolysis and oxidative phosphorylation was synergistic.
Conclusions:
- Platelets exhibit metabolic flexibility, utilizing both glycolysis and oxidative phosphorylation for energy.
- Fatty acid oxidation and glutaminolysis contribute to energy demands during platelet activation.
- Glycolysis plays a crucial role in compensating for other fuel sources during platelet aggregation.
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