[The role of calcium ions in fibrin polymerization].

The article reviews the literature and authors' own data on the role of Ca ions in blood coagulation, namely, in the process of the formation of highly ordered fibrin clot. It has been shown that the main role of Ca2+ is the timely formation and stabilization of fibrin polymerization sites at all successive stages of the fibrin polymerization process.

[Effect of compounds having hypotensive activity on microviscosity of phospholipids membranes].

Vincapane, apressin, raunatin, reserpine and prazosin have been studied for their effect on the state of microviscosity of phospholipid bilayers from lecithin and cardiolipine. The method of fluorescent probing using pyrene and asymmetrical polymethine dye 4501 u have been used for this study. Character of changes of phospholipid bilayers microviscosity as affected by these compounds depends on their concentration in the solution.