Inhibition of diamine oxidase promotes uptake of putrescine from rat small intestine
In blood from the portal vein of anaesthetized rats the levels of histamine and putrescine were 2-3-fold lower compared to arterial blood. Putrescine concentration was increased severalfold and the difference between portal and arterial blood abolished in animals pretreated with the specific diamine oxidase inhibitor aminoguanidine. Histamine concentration was 40% lower in portal compared to arter