“To corroborate a direct action of atropine on nicotinic receptors, we have employed N,N-dimethyl-… receptor agonist; atropine blocked its secretory responses with an IC50 of 2.04 nM. Nicotinic currents, recorded with the whole … technique were blocked by atropine in a concentration-dependent … showing a competitive nature.”
“… nicotinic currents and their downstream consequences (i.e. cytosolic … release) were blocked by nanomolar concentrations of atropine ; although the blockade was partial, it must be considered when using atropine to study cholinergic neurotransmission, … where both nicotinic and muscarinic receptors are present i.e., the adrenal medulla and autonomic ganglia.”