Elimination of Adrenaline and Noradrenaline from the Circulating Blood

THE mode, the loci, and the extent of the inactivation of the sympathetic hormones are only partly known. The liver has been considered of prime importance. A minor fraction of injected catechols appears in the urine. Recently, the rather generally occurring enzyme amine-oxidase has been extensively studied as the agent responsible for a more general, ‘peripheral’ elimination.