[Certain biochemical features of leukocytes in blast crisis of chronic myelogenous leukemia]. / Nekotorye biokhimicheskie osobennosti leikotsitov pri blastnom krize khronicheskogo mieloleikoza.

The content of nuclear high mobility group (HMG) proteins, activities of ornithine decarboxylase (ODC), adenosine deaminase (ADA) and purine nucleoside phosphorylase (PNP) and also glycosaminoglycan (GAG) content and composition were studied in leukocytes of patients with chronic myelogenous leukemia in the phase of blast crisis (BC CML). Myeloid and lymphoid cytochemical variants of BC CML differ by biochemical parameters. It is suggested, that the content of HMG-proteins, activities of ODC and PNP, and electrophoretic patterns of GAGs could be used in diagnostics of two main variants of BC CML.

[Leukocyte and thrombocyte glycosaminoglycans in hemophilia A and von Willebrand's disease]. / Glikozaminoglikany leikotsitov i trombotsitov pri gemofilii A i bolezni Villebranda.

AIM: The study of glycosaminoglycanes (GAG) in leukocytes and platelets of patients with hereditary coagulopathy. MATERIALS AND METHODS: GAG concentration, composition and fraction identification were made in 25 patients with hemophilia A and 10 patients with Willebrand disease. RESULTS: In hemophiliacs, leukocytes contained low concentrations of GAG. In those with bleeding and synovitis GAG levels were lower than the average, in those with extensive hematomas in the absence of locomotor disorders the above levels were close to normal. Chondroitinsulphate dominated in GAG composition though it was less polydisperse. Heparin sulphate levels were elevated. Platelet GAG characteristics were close to normal. In Willebrand disease leukocyte GAG content and composition was similar to those in hemophilia A except some differences in electrophoretic properties of small GAG components. CONCLUSION: Metabolism and/or release of GAG from blood cells may be involved in pathogenesis of hemophilia A and Willebrand disease.

[The importance of studies of the glycosaminoglycans in the peripheral blood leukocytes of patients in the diagnosis of the phases of chronic myeloleukemia]. / Znachenie issledovanii glikozaminoglikanov leikotsitov perifericheskoi krovi bol'nykh v diagnostike faz khronicheskogo mieloleikoza.

To elucidate new diagnostic markers of chronic myeloid leukemia (CML) phases, we investigated quantitative and qualitative composition of glycosaminoglycans (GAG) of leukocytes from peripheral blood of 72 patients. Chronic CML phase was characterized by elevated GAG levels (2 times compared to normal values), weakening of anionic properties of chondroitin sulfate (CS) and high amount of heparan sulfate (HS). In CML transformation in the progressive phase overall concentration of GAG grew still higher, GAG fraction composition changed. In the blast crisis there was a sharp fall in the overall GAG, new electrophoretic fractions emerged. In the myeloid variant of the crisis an additional GAG component appeared (GAG-m), whereas in the lymphoid variant another component was found (GAG-1). It is suggested that the number and composition of GAG in peripheral blood leukocytes may serve markers of CML phase.

[Platelet glycosaminoglycans in paraproteinemic hemoblastoses]. / Glikozaminoglikany trombotsitov pri paraproteinemicheskikh gemoblastozakh.

The content and composition of platelet glycosaminoglycans (GAG) were studied in 24 patients with paraproteinemic hemoblastoses (22 patients with myelomic disease and 2 with Waldenstrom's disease). According to the GAG levels, the patients were divided into 2 groups: 1) 6 patients with its higher levels (181 +/- 8 micrograms of uronic acids per 100 mg of acetone-dried cells) and 2) 18 patients with its close-to-normal levels (129 +/- 4 micrograms per 100 mg of the cells). Marked manifestations of hemorrhagic diathesis were found in 5 patients in Group 1 and in 1 in Group 2. Chondroitin sulfate was demonstrated to prevalent in the platelets of patients with paraproteinemic hemoblastoses, as in those of healthy persons. There was GAG electrophoretic profile depletion due to the reduced number of minor components of non- and low-sulfated GAG in 14 patients. It is suggested that the changes detected in the content and composition of GAG may contribute to platelet dysfunction in these diseases.

[Glycosaminoglycans of erythroblastic islands in the suppression and subsequent stimulation of erythropoiesis]. / Glikozaminoglikany éritroblasticheskikh ostrovkov pri ugnetenii i posleduiushchei stimuliatsii éritropéza.

The GAG types of the rat bone marrow erythroblastic islands were found to be similar to those of human macrophages. Activation of erythropoiesis with the erythropoietin induced an expression of heparin-sulfate.

[The glycosaminoglycans of the bone marrow erythroblast islands in the rat]. / Glikozaminoglikany éritroblasticheskikh ostrovkov kostnogo mozga krysy.

The glycosaminoglycans (GAG) types of normal rat bone marrow's erythroblastic islands were found to be similar to that of human macrophages. Induced anaemia increased the sulphated GAG.