Key result
Platelets from black volunteers were hyperaggregable and showed potentiated Gq pathway activation after PAR4 stimulation compared with whites, persisting despite dual antiplatelet inhibition.
Why the study?
Does PAR4-mediated platelet stimulation cause differential Gq pathway activation and platelet aggregation in platelets from black versus white individuals?
Population
Washed human platelets from black and white volunteers
Comparison
PAR4-mediated platelet stimulation vs Platelets from white donors
Design
Preclinical
Authors
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May indicate lesser DAPT efficacy in black individuals; leaves open whether PAR4-Gq targeting improves outcomes across ancestries.
Observational
Does PAR4-mediated platelet stimulation cause differential Gq pathway activation and platelet aggregation in platelets from black versus white individuals?
The study identifies a race-dependent difference in PAR4-mediated platelet activation via the Gq pathway, suggesting that standard dual antiplatelet therapy may be less effective in black individuals.
Tourdot et al. (2014) reported an observational. Black race vs. White race was evaluated on PAR4-mediated platelet aggregation and Gq pathway activation. Platelets from black volunteers were hyperaggregable and showed potentiated Gq pathway activation after PAR4 stimulation compared with whites, persisting despite dual antiplatelet inhibition.
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