[Use of the hematological system Technicon H-1 for analysis of the effect of laser irradiation].

The effects of low-energy He-Ne laser (lightguide emission dose power 1.2-1.5 nw) on the morphologic and functional parameters of formed elements of the blood were experimentally studied with the use of the Technicon H-1 hematologic system.

[Mechanisms of the anticoagulation activity of new semi-synthetic heparinoids].

Compounds representing chemically modified derivatives of natural polysaccharides and possessing heparin-like properties have been obtained basing on new methods of sulphatization++ of hydroxyl-containing polymers. The study of the anticoagulation activity of mannan, starch, dextran sulfates permits a suggestion that these compounds realize their anticoagulant potential not through antithrombin-III. A relationship has been established between the properties of semi-synthetic heparinoids and sulfur percentage, molecular mass and the type of polymeric matrix.

[The disseminated intravascular coagulation syndrome in endotoxin shock].

Dynamics of blood coagulation and morphological changes after the intravenous administration of Salmonella typhimurium endotoxin is studied experimentally in Chinchilla rabbits. The stages of blood coagulation are established characteristic for the above syndrome. The signs of the developing blood stasiopathy with the domination of vascular wall damage and thrombocyte aggregation are observed.

[Pathogenetic characteristics of hemostatic disorders in chronic renal failure].

As many as 45 patients with terminal chronic renal failure (CRF) admitted to the hospital were examined for hemocoagulation and blood plasma content of medium-sized molecules (MSM). Animal (rabbit) experiments were made in vitro and in vivo to study the effect produced on hemocoagulation of MSM isolated from CFR patients' blood by acidic deproteinization, ultrafiltration and gel chromatography. Integrally, the MSM fraction was shown to exert marked anticoagulant and antiaggregation effects, to increase vascular permeability, promoting the development of hemorrhagic diathesis in CRF patients.

[Effects of middle-weight molecules on the mechanism of hemostasis].

Middle-weight molecules exert a marked anticoagulant effect, inhibit fibrinolysis and promote disaggregation of spontaneously aggregated blood platelets, decrease the degree of ADP-induced aggregation of blood platelets, and raise vascular permeability thus influencing the hemostatic potential of the blood. The types of the activity established are mainly detectable in the dialysed fraction of middle-weight molecules. After purification by means of dialysis the middle-weight molecule fraction promotes the formation of an active prothrombin-transforming complex without Ca++ in the presence of the matrix (tissue thromboplastin).