[Actual Issues of Choosing Anticoagulant Therapy for Long-term Prophylaxis of Thromboembolic Complications].

The article contains presentation of actual problems of selection of anticoagulant therapy for long term prevention of thromboembolic complications in outpatients with atrial fibrillation, chronic heart failure, and chronic kidney disease.tions in ambulatory Patients with atrial fibrillation, chronic heart failure and chronic kidney disease.

In vitro study of the role of lenticular epithelial calcium channels and aquaporins in the development of cataract.

The role of calcium and water channels (aquaporins) in the pathogenesis of cataract was studied in vitro. Aquaporin blockade caused opacity of the lens sooner than changes in calcium ion concentration in culture medium.

[Effect of hydrazine sulfate on nucleic acid metabolism in rat liver tissue during the process of chemical hepatocarcinogenesis].

The development of hepatocellular tumors in rats would show the same character and was observed in the same period (6 months) after either simultaneous administration of a hepatocarcinogen--diethylnitrosoamine (0.02%) and a possible antitumor agent, namely hydrazine sulfate (0.012%) with drinking water, or after the administration of the hepatocarcinogen concerned alone.

[Hepatic RNA resistance to enzymatic degradation in the process of hepatocarcinogenesis in rats].

During hepatocarcinogenesis, induced in rats with diethylnitrosamine (DENA) and lasting for 6 months, the authors have studied the resistance of hepatic RNA to the degradation by serum RNAs, the resistance being served as a criterion of possible changes in the spacial configuration of polynucleotides. In the precancer period the resistance of RNA molecules (total, cytoplasmic, ribosomal and transfer) is found to considerably increase and then to fall within the range of the studied pH (5.1, 7.