[Action of some pyrazolone derivatives on thrombocyte aggregation]

The influence of four agents--pyrazolidinedione derivatives on the ADP-induced aggregation and activity of glycolytic enzymes--glyceraldehydrophosphate dehydrogenase and lactate dehydrogenase (GAPD, LDG) and of the anatomic oxidation enzyme--glucose-6-phosphate dehydrogenase (G-6-PD) was studied. The substances known by a conventional designation of MYaK-38, No-13 and No-2 are shown to display an antiaggregational action. Amidopyrine was found to depress the adhesive capacity of blood platelets, to activate GAPD and LDG and to lower the activity of G-6-PD.