[NOTHROMBEL EFFECT ON THE FORMATION OF PLATELET-LEUKOCYTE COMPLEXES INDUCED BY THROMBIN].

The effects of the Nothrombel on the formation of platelet-leukocyte complexes (PLCs) induced by thrombin was studied. It was shown, that Nothrombel dose-dependently inhibited the formation of PLCs. Its activity is higher than the activity of the comparison compounds Aspirin. The half maximal effective concentration (EC50) for Nothrombel is 1.75 mMol/mL, for Aspirin is much more than 2.5 mMol/mL. The inhibition mechanism of the PLCs formation by Nothrombel caused by the ability of this drug to inhibit the P-selectin translocation on the platelet membrane, the expression of membrane complex GPIb-IX-V, the mobilization of cytoplasmic calcium in platelets, as well as, apparently, its inhibitory effect on platelet P2Y12 purine receptors.