Modulation of cholinergic neurotransmitter release from myenteric plexus by somatostatin.


Efflux of radiolabeled acetylcholine (Ach) was studied in vitro using myenteric plexus-longitudinal muscle strips from guinea pig small intestine. The data showed that somatostatin (6.0 x 10(-7) M) depressed resting output of Ach from enteric neurons and this inhibition was unaltered in the presence of naloxone (1.0 x 10(-6) M). The inhibition by… (More)


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