Key result
Prostacyclin (PGI2) significantly reduced platelet surface area coverage under high shear from 38.2% to 24.4% and reversed stress fibre formation via a cAMP/PKA dependent mechanism.
Population
Activated and spread platelets on fibrinogen (in vitro model)
Design
Preclinical
Authors
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PGI₂ reversal of platelet spreading is hypothesis-generating; leaves open its role in dynamic thrombus stability pending in vivo studies.
Absolute Event Rate: 24.4% vs 38.2%
p-value: p=<0.05
Prostacyclin can reverse key platelet functions after initial activation by modulating the actin cytoskeleton via a PKA- and RhoA-dependent mechanism, identifying a novel mechanism for controlling thrombosis.
Yusuf et al. (2017) studied In vitro platelet activation and thrombus formation. Prostacyclin (PGI2) vs. Buffer/Tyrodes alone was evaluated on Platelet surface area coverage under high shear (p=<0.05). Prostacyclin (PGI2) significantly reduced platelet surface area coverage under high shear from 38.2% to 24.4% and reversed stress fibre formation via a cAMP/PKA dependent mechanism.
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