Key result
Epinephrine stimulates primary platelet aggregation and Ca2+ uptake, an effect blocked by phentolamine and verapamil.
Why the study?
Does epinephrine induce Ca2+ uptake and primary aggregation in human blood platelets?
Population
Human blood platelets isolated by albumin density gradient centrifugation
Comparison
Epinephrine (10(-7) to 10(-5) M) vs ADP (10 M) and antagonist treatments…
Design
Preclinical
Authors
Loading...
Supports alpha-adrenergic platelet mechanisms in vitro; leaves open translation to human thrombosis or therapy.
Does epinephrine induce Ca2+ uptake and primary aggregation in human blood platelets?
Epinephrine stimulates primary platelet aggregation through a specific alpha-receptor interaction that selectively increases platelet membrane permeability to Ca2+.
Owen et al. (1980) studied this question. Epinephrine vs. ADP was evaluated on Ca2+ uptake and primary aggregation. Epinephrine (10^-7 to 10^-5 M) stimulated primary platelet aggregation and dose-dependent Ca2+ uptake, an effect blocked by phentolamine and verapamil.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: