Does aspirin counteract norepinephrine-induced platelet activation in healthy humans?
Aspirin may be less effective as an antithrombotic drug during sympathoadrenal activation in humans.
Norepinephrine, at plasma levels easily attained during exercise, enhances platelet aggregability and platelet secretion in vivo in healthy humans. Aspirin may be less effective as an antithrombotic drug during sympathoadrenal activation in humans.
Larsson et al. (1994) studied this question.