SOME ASPECTS OF THE ESTIMATION OF STRUCTURAL-FUNCTIONAL CHANGES IN MEMBRANE OF ERYTHROCYTES AT THE CARDIOVASCULAR PATHOLOGY

The article presents the estimation of structural-functional changes in erythrocytic membranes accompanied with the change of activity of different enzymes that determine normal functioning of erythrocytes. Change of lipid-protein and protein-protein interactions causes the reapportionment of charges on the surface of erythrocytes and. the decrease of total charge of cell and. leads to the increase of aggregation of erythrocytes and. the change of rheological properties of blood. In the end. it reflects on the effectiveness of oxygen transportation, transcapillary diffusion and perfusion of blood in microcirculation channel

The sphericity of erythrocytes and its communication with biochemical, hemostasis and rheological by properties of blood at the patients with coronary disease and arterial hypertension

The aim of the work was to study the peculiarities of the influence of bloodfactors on the development of spherocytosis in patients with coronary disease and arterial hypertension. The study involved 30 patients with coronary disease and 24 patients arterial hypertension with the study of their clinical status and biochemical parameters of blood, hemostasis, blood cell analysis. It was found that the increase in the pool spherocytic cells in patients with arterial hypertension were associated with increased nitric oxide production, while in patients with coronary disease spherocytosis was due to an increase in the concentration of reactive oxygen metabolites

Dysfunction of vascular endothelium at arterial hypertension and coronary disease (literature review)

This review presents the observation of the role of endothelial dysfunction in development of atherosclerosis, coronary disease and. hypertension. Among other causes of endothelial dysfunction the most significant are hemodynamic factors (wall transverse strain, transmural pressure), dyslipoproteinemia, hyperhomocysteinemia, hyperglycemia, free radical damage of endothelium. It is supposed that in development and. progressing of coronary disease more significant role may belong to endothelial dysfunction rather than to morphological vascular changes, predetermined by atherosclerosis. However, there is still no clear view of development of endothelial dysfunction and. mechanisms of development and. progressing of both isolated forms of coronary disease and arterial hypertension and their combination

PROTEINS OF THE ERYTHROCYTE MEMBRANE AND METABOLIC SYNDROME

There is no literature data on the changes of structural and functional qualities of the erythrocyte membrane at the arterial hypertension (AH) complicated and non-complicated by the metabolic syndrome (MS). Although the changes of interrelation between the proteins of erythrocyte membrane at the AH can influence the deformability of the membrane itself. The aim of the work was to estimate the peculiarities of interrelation between the proteins of erythrocyte membrane in the patients with arterial hypertension complicated and non-complicated by the metabolic syndrome. The research included 51 men with AH and 29 clinically healthy men which were divided into 3 groups: group 1 - control; group 2 - men with AH complicated with MS (n = 29); group 3 - men with AH non-complicated with MS (n = 22). We studied blood lipids, biochemical and hemostasiological parameters, assessed 10 proteins of erythrocyte membrane. Patients of the 2nd and 3rd groups had different content of α- and β-spectrins, anion-transport protein (ATP), plates 4.1, glycerol-3-phosphatededehydrogenase (G-3-PDG), glutathione S-transferase (GST). The results of the research showed that metabolic syndrome at the AH can not only influence the state of vessel wall but also cause significant disorders of structural and functional qualities of the erythrocyte membrane

Level of membrane-bound hemoglobin and red-cell membrane proteins in patients with essential hypertension complicated and not complicated with metabolic syndrome

We studied the effect of different levels of membrane-bound hemoglobin on the level of red-cell membrane proteins and also their interrelation in patients with essential hypertension with and without metabolic syndrome. It wasfound that high membrane-bound hemoglobin is closely related to the low level of high-density lipoproteins and high level of low-density lipoproteins in patients with essential hypertension complicated with metabolic syndrome. In patients with essential hypertension not complicated with metabolic syndrome high membrane-bound hemoglobin is related to the increased prothrombin time and decreased blood urea nitrogen. In patients with essential hypertension complicated with metabolic syndrome high membrane-bound hemoglobin significantly influences the level of membrane contractile proteins (actin, tropomiosine). In patients with essential hypertension without metabolic syndrome high membrane-bound hemoglobin is accompanied by the decrease of structural and integral membrane proteins levels (anion-transport protein and protein 4.1). As the result of quantitative changes in these proteins and change in their interrelations in patients with ssential hypertension complicated with metabolic syndrome more intensive disorders of structural and functional organization of red-cell membrane can appear

THE SENSITIVITY OF VASCULAR ENDOTHELIUM AND ITS PREDICTORS IN PATIENTS WITH CARDIOVASCULAR PATHOLOGY

Aim. To estimate the role of endogenous metabolic factors in formation of vascular endothelium reactivity in patients with different genesis cardiovascular regulation disorders.Materials and methods. The research included 30 patients with ischemic heart disease (IHD) with stable form of exertional angina (EA) of II–III severity class, 30 patients with I–II stage and 1st–2nd degree essential hypertension (EH), and 15 clinically healthy volunteers. We researched the signs of functional state of vascular endothelium before and after occlusion test. The parameters investigated included: adhesion of thrombocytes, spontaneous aggregation, prostacyclin activity of blood plasma, levels of antithrombine-III, of von Willebrand factor, contents of malonic aldehyde, of nitrites, of endothelin-1, of membrane-connected haemoglobin, of methaemoglobin in erythrocytes, activity of angiotensineconverting enzyme, level of sorption on the membrane of erythrocytes of nucleotides. Research of hemorheology was performed by viscosimetry method.Results. In healthy volunteers high probability of endothelium sensitivity to transverse strain decrease (in 82%) was determined and 25% increase of activity of peroxide oxidation of lipids. In patients with exertional angina influence of dynamic changes of blood flow on endothelium occurred by 2% decrease of viscosity and more than 120% increase of production von Willebrand factor (in 87%). It was concluded that as higher the production of prostacyclin in response to mechanic stimuli (more than 50%) is, the higher is probability of blood flow dynamic changes influence on endothelium. In patients with essential hypertension 30% increase of level of antithrombine-III in 100% of cases caused increase of sensibility of vascular endothelium to transverse strain.Conclusion. The most significant factors linked with sensibility of endothelium of vascular wall to dynamic blood flow changes in examined groups of patients were determined. In patients with exertional angina vascular reaction was mostly linked with rheological qualities and adhesive-aggregation characteristics of blood. In patients with essential hypertension the sensitivity of vascular endothelium was implied to be concordant with anticoagulant activity of blood plasma