[Postheparin diamineoxidase (DAO) increase in the plasma and gastrointestinal mucosa (author's transl)].

Haparin given i.v. in doses of 50 I.U./kg/body weight induces in the man a synchronous increase of plasmatic and gastrointestinal mucosa Diamineoxidase (DAO) bioptically obtained in course of gastroscopy. The DAO increase is maximum 5 min after heparin injection, and afterwards less evident. The possible practical meaning of the use of DAO increasing substances and so for histamine catabolism in digestive apparatus mucosa is discussed.