The effect of sulfated polysaccharides on the hemostatic system in conditions in vitro. Platelet-rich plasma was obtained by centrifugation at 200 g for 10 minutes. The remaining citrate blood was further centrifuged at 1500 g for 10 min to obtain platelet-poor plasma. The antithrombin activity of the compounds was evaluated in vitro by their effect on the recalcification time, thrombin, and prothrombin time of human blood plasma stabilized with a 3.8% sodium citrate solution in the ratio of 9:1. In studies conducted on the blood plasma of rats, it was found that the studied compounds, to varying degrees, lengthen the APTT, APTT, prothrombin time. At the same time, anticoagulant activity was established to block one of the factors II, V, X. Polysaccharide exhibit a combined anticoagulant effect in the body, due to which they are classified as anticoagulant and antithrombin agents.

The works show that, using fluorescent probes, it was used to study the effect of PC-8 on changes in the dynamics of the intracellular Ca2+ content in synaptosomes of the rat brain, depending on the site of the binding of glutamate on calcium channels by a specific mediator with glutamate. To measure the amount of cytosolic Ca2+ synaptosomes, we calculated using the Grinkevich equation. It has been shown that polyphenol PC-8 binds to the glutamate-binding site of NMDA receptors, so that the conductance for Ca2+ ions is reduced through a channel blocking the effect of polyphenol PC-8 can be explained. due to its binding to the competing action of the site, the binding of glutamate to NMDA receptors.