epinine ( 0.3-1 mg . i.a . ) , alpha-methyldopamine ( 10-300 mug , i.a . ) and octopamine ( 10-300 mug , i.a . ) were ineffective.3 alpha-methyldopa ( 30 mg , i.a . ) inhibited the stimulating effect of l-dopa ( 1-3 mg ) on pancreatic secretion.4 apomorphine ( 1 mg , i.a . ) attenuated dopamine-induced ( 1-30 mug ) pancreatic secretion but did not antagonize secretin-induced ( 0.03-0.3 units ) or pancreozymin-induced ( 0.3-1 units ) secretion.5 these observations suggest that l-dopa is probably converted to dopamine to stimulate the exocrine pancreas , and that dopamine interacts with the specific receptors.6 the noradrenaline and dopamine content of the canine pancreas was estimated in controls and in dogs treated with secretin , reserpine , l-dopa or alpha-methyldopa .
C0553695
exocrine pancreas
C0030274
pancreas