[Effect of amrinone and trapidil on adherence, migration and phagocytic behavior of neutrophilic granulocytes of the human].

Amrinone and trapidile belong to a group of positive inotropic and simultaneously vasodilating substances, whose effects are based on an inhibition of phosphodiesterase (PDE), thus enriching intracellular c-AMP. In neutrophilic granulocytes these PDE-antogonists will produce an inhibition of adherence and phagocytosis, whereas the migration was not affected. The lower leukocyte effective concentration of 10 mmol/l can be achieved by a therapeutical application, so that a slight inhibition of the leukocyte function has to be accounted for as a side effect.