[The dynamics of 14C-ethanol and 14C-acetaldehyde distribution in rat testes]. / Dynamika rozpodilu 14C-etanolu ta 14C-atsetal'dehidu v sim'ianykakh shchuriv.

Changes in radioactivity were studied during one day in common proteins, karyoplasm and chromatin of testis tissue and in the blood serum of rats after administration of (14C)ethanol and (14C)acetaldehyde. In a series of experiments the acetaldehyde involvement dynamics was determined on the background of disulphiram action. It has been found that the rate of elimination of indicator doses of ethanol and acetaldehyde from the blood varies within a day. In the interval (2-4 h) the ethanol utilization rate is higher than that of acetaldehyde. It is, probably, caused by the activity of ethanol transformation enzymes, intensive ethanol oxidation and inflow of the transformation products to the tissues. Karyoplasm had the highest level of radioactivity among the investigated testis structures. During the day the acetaldehyde accumulation rate per a unit of time was several times lower in chromatin, than in karyoplasm. These results permit supposing that the testis karyoplasm structures possess the mechanisms which inhibit acetaldehyde penetration into chromatin of the male generative cells.

[The action of medichronal (glucose-glycine-formate) on the serotonin blood level in alcoholism patients]. / Deistvie medikhronala (gliukozoglitsinformiata) na soderzhanie serotonina v krovi bol'nykh alkogolizmom.

The effects of a novel antialcoholic medication medichronal on the serotonine concentration in blood of patients with second stage alcoholism was investigated. It has been discovered that remission in 75% of the patients was connected with its hyper- and hyposerotoninemic influence, depending on the initial lowered or increased serotonine content. Similarity of medichronal and unithiol effects was observed in the form of palyndromoinversion regulation of serotoninergic activity. In a portion of the patients the increased, compared to healthy persons, serotonine concentration before and after the treatment does not differ from the average values in the whole group.

[The new anti-alcohol preparation medikhronal: changes in the level of ethanol, acetaldehyde and monoamines during the treatment of alcoholism patients]. / Novyi antialkogol'nyi preparat medikhronal: izmenenie soderzhaniia étanola, atsetal'degida i monoaminov pri lechenii bol'nykh alkogolizmom.

Treating patients with stage-II alcoholism with medichronal and unithiol sharply decreases blood levels of alcohol and acetaldehyde. Medichronal restores the decreased level of norepinephrine excretion in 25% of patients and the increased level of epinephrine in 43%. The high baseline concentration of serotonin dropped in 41%, however, its level remained higher than in the controls. There was a negative correlation between the changes of ethanol concentrations and the excretion of norepinephrine. There was a direct dependence between the changes in the norepinephrine/epinephrine ratio and the serotonin concentration.

[The action of medikhronal (glucose-glycine-formate) on catecholamine excretion in alcoholics]. / Deistvie medikhronala (gliuzkozo-glitsin-formiata) na ékskretsiiu katekholaminov u bol'nykh alkogolizmom.

The application of the novel antialcoholic drug Medichronal mainly results in normalization of dyscatecholaminemias, by lowering or elevating noradrenaline or adrenaline levels. This effect is similar to that produced by unitiol that is conventionally used in nacrological care. The changes in catecholamine levels occur in various dyscatecholaminemias characterized by a high or low excretion of biogenic monoamines. Before and after therapy, in some patients, the concentrations of catecholamines do not differ from those in healthy persons.

[Changes in concentration of the blood serum malondialdehyde due to a one-time and long-term ethanol and acetaldehyde administration]. / Izmenenie kontsentratsii malonovogo dialdegida v syvorotke krovi pri odnokratnom i mnogokratnom vvedenii étanola i atsetaldegida.

Changes in concentration of the rat blood serum malone dialdehyde (MDA) at separate and combined action of ethanol and acetaldehyde under conditions of their single and long-term administration have been investigated. In some series of experiments acetaldehyde and ethanol were administered together with teturame. The obtained data permit supposing that under conditions of acute ethanol intoxication an increase of the MDA concentration is caused by the acetaldehyde action. The long-term ethanol intoxication induces a significantly higher (if compared with acute intoxication) increase the MDA concentration. The results confirm the concept of the lipid peroxidation process at acute and chronic intoxication due to ethanol metabolism. Acetaldehyde is an important factor among those determining disturbances of cell biogenesis in the animal organism, causing an increase of the blood serum MDA.

[The effect of protamine on cholesterol, triglycerides and blood serum proteins during the dynamics of experimental hypercholesterolemia]. / Deistvie protamina na kholesterin, triglitseridy i belki syvorotki krovi v dinamike éksperimental'noi giperkholesterinemii.

Content of total proteins, cholesterol, and triglycerides was studied in the blood serum and lipoprotein fractions of rabbits after administration of protamine within 1, 3 and 7 months of hypercholesterolemia development. The protamine effect was accompanied by "equalization" of cholesterol and triglyceride concentrations, as compared with their alteration in hypercholesterolemia, by stabilization of their content in various periods of the disease, but at the higher level than that of intact animals. The phenomenon observed occurred mainly in lipid components of LDL and VLDL subfractions. Analysis of alterations in the content of cholesterol and proteins in HDL and apo B-containing fractions showed that administration of protamine during long-term hypercholesterolemia led to development of antiatherogenic symptoms. Proatherogenic alterations in lipoprotein composition, developed during hypercholesterolemia, appear to be inhibited by protamine.

[The dynamics of [3H]-cholesterol incorporation into the liver and aortic tissue of guinea pigs on long-term ethanol administration]. / Dinamika vkliucheniia [3H]-kholesterina v tkani pecheni i aorty morskikh svinok pri dlitel'nom vvedeniia étanola.

The effect of ethanol administration to guinea pigs (4 g/kg, per os) on the dynamics of [3H]-cholesterol incorporation into the liver and aorta tissues was studied for 3 months. It has been discovered that specific radioactivity of the control animals linearly increased during 24 hours in the blood serum. Ethanol reduced it as compared with the control only 0.5 h after a label has been introduced. Cholesterol renovation in the liver remained unchanged under the prolonged effect of ethanol. In the aorta the ethanol effect was characterized by a decrease of [3H]-cholesterol specific radioactivity 0.5 h after its administration. However, in this case the ratio of aorta/blood serum radioactivity increased. A day after the labelled cholesterol administration to alcoholized animals the radioactivity calculated per 1 mg of cholesterol and per unit of tissue weight and referred to the blood serum radioactivity was lower as compared to the control level.

[Periodicity of changes in the concentration of cholesterol and blood serum proteins in dynamics of hypercholesterolemia]. / Periodichnost' izmeneniia kontsentratsii kholesterina i belkov syvorotki krovi v dinamike giperkholesterinemii.

During 30-week hypercholesterolemia in rabbits and guinea pigs the differences in cholesterol dynamics manifested themselves in quantitative variations of blood serum proteins. Five weeks after the beginning of the experiment a sharp increase of cholesterol level corresponded to the equally sharp decrease of the quantity of blood serum total and cation proteins. The variation of protein and cholesterol concentrations in guinea pigs during 17 weeks is similar to the development of early stages of cholesterolemia (4 weeks) in rabbits. It can be supposed that there is a connection between metabolic systems involved in the transformation of blood serum cholesterol and blood serum.

[Alcohol and atherogenesis: effect of low and high doses of ethanol on rat blood cholesterol]. / Alkogol' i aterogenez: vliianie nizkikh i vysokikh doz étanola na kholesterin krovi krys.

Alterations in content of cholesterol and specific radio-activity of erythrocyte lipoproteins were studied in rats after administration of labelled sterol under conditions of acute and chronic influence of low 0.6 g/kg and high 4.0 g/kg doses of ethanol. Both these doses caused a decrease in content of high density lipoproteins (HDL) after single ethanol administration, while content of apoB containing lipoproteins as well as binding of labelled sterol with erythrocytes were elevated after long-term ethanol treatment. Atherogenicity index was increased after single and chronic administration of either low or high doses of ethanol. In chronic administration of low doses of ethanol specific radioactivity of HDL was decreased, thus suggesting that cholesterol acceptor function of these particles was lowered.

[The action of teturam and acetaldehyde on the tissue catecholamines of rats]. / Deistvie teturama i atsetal'degida na katekholaminy tkanei krys.

The results of the isolated and combined effects of teturam and acetaldehyde indicate that a decrease of noradrenaline levels in the brain and heart is induced by teturam. An increase of adrenaline content in the hypothalamus is determined by acetaldehyde. In the adrenals the agents produce the oppositely directed changes in catecholamine content. Against the background of chronic administration of acetaldehyde teturam potentiates its influence on changes in noradrenaline levels in all tissues except the adrenals and adrenaline levels in the hypothalamus and brain stem.

[Dynamics of the lipoprotein distribution in early hypercholesterolemia characterizes the activation of cholesterol transport]. / Dinamika raspredeleniia lipoproteinov pri rannei giperkholesterinemii kharakterizuet aktivirovanie transport kholesterina.

Using gradient gel electrophoresis, the levels of major classes of rabbit blood sera lipoproteins were studied over a period of 28 days. Hypercholesterolemia persisted up to the 4th day with a subsequent decrease. This was paralleled with an increase in the levels of triglyceride-rich and apoB-containing particles. The decrease of the electrophoretic mobility of low density lipoproteins correlated with an increased content of the intermediate fraction. On the 28th day after the beginning of experiment the concentration of total high density lipoproteins showed an increase. The subfractional redistribution of HDL3 and HDL2 subclasses pointed to the stimulation of the accepting process and the overall reverse cholesterol transport system. A comparison of experimental results with literary data allowed to conclude that the relative decrease of the serum cholesterol level typical of hypercholesterolemia of one month duration is due to the activation of specific and nonspecific preventive mechanisms.

[Blood lipoproteins in modeling of atherosclerosis and administration of protamine]. / Lipoproteiny krovi pri modelirovanii ateroskleroza i vvedenii protamina.

The influence of protamine on the HDL, LDL, VLDL species concentration variation as well as on their cholesterol and protein content in respect to total blood serum cholesterol in different periods (1 and 7 months) of hypercholesteremia in rabbits is investigated. Daily administration of protamine (10 mg/kg) during 30 days to intact animals did not change the investigated parameters. In the early period of hypercholesteremia protamine considerably increased the content of all lipoprotein fractions. Under the conditions of prolonged hypercholesteremia the LDL and VLDL concentrations decreased by 23 and 60 per cent, respectively; HDL increased by 101 per cent.

[Structural and functional properties of erythrocytes in patients with arteriosclerotic circulatory encephalopathy]. / Strukturno-funktsional'nye svoistva éritrotsitov u bol'nykh ateroskleroticheskoi distsirkuliatornoi éntsefalopatiei.

A total systems approach was used to study the structural and functional properties of red blood cells in 100 patients suffering from atherosclerotic circulatory encephalopathy, stages I-III: aggregation, deformability, superficial cytoarchitectonics, the content of ATP and 2,3 DPH, transport of univalent cations, and the cholesterol/phospholipid index of membranes. It has been demonstrated that as the atherosclerotic process progresses, the membrane rigidity increases as a result of excessive concentration of cholesterol in the cell, aggregation is enhanced, transport of ions and substances gets disturbed, the processes of glycolysis and synthesis of macroergs get inhibited. All this brings about the derangement of transport function of the cells because of disturbance of the properties of moving in the system of microcirculation.

[The role of acetaldehyde in the effect of alcohol on the central catecholaminergic mechanisms]. / Rol' atsetal'degida v deistvii alkogolia na tsentral'nye katekho- laminergicheskie mekhanizmy.

Variations in the concentration of noradrenaline (NA) and adrenaline (A) were examined in the hypothalamus, brain stem and cerebral hemispheres under the influence of acetaldehyde and ethanol given alone and combined in single and chronic doses. In some experiments acetaldehyde and ethanol were administered in combination with teturam. The data obtained attest to an important role of acetaldehyde in disturbing the catecholamine mechanisms under alcoholization. As for the hypothalamus, the action of acetaldehyde manifests in the coupling of the two oppositely directed processes--a decrease of NA concentration and a rise of A concentration. In contrast to the other study brain structures, in the cerebral hemispheres acetaldehyde combined with teturam reduces the level of NA and A.

[Catecholamines in the tissues and blood of rats after administration of acetaldehyde and ethanol]. / Katekholaminy tkanei i krovi krys pri deistvii acetal'degida i étanola.

Acetaldehyde alone and in combination with acute and chronic ethanol intoxication has been studied for its effect on the concentration of epinephrine and norepinephrine in different brain areas, in the heart muscle, in adrenals and blood plasma of rats. Acetaldehyde is shown to enhance the epinephrine and norepinephrine levels in the brain areas which are non-specific for neuromediation of the mentioned catecholamines. The joint administration of acetaldehyde and ethanol increased the epinephrine concentration in adrenals probably due to the effect of acetaldehyde. On the contrary, the norepinephrine concentration in the heart decreased because of the action of ethanol. The authors' data show that acetaldehyde becomes an inductor of the mechanisms of hormone-mediator dissociation, thus altering the functions of vegetative-adrenal system. The results of the investigation support the hypothesis that acetaldehyde plays a significant role among pathogenic factors of ethanol intoxication, since it changes in a special way the catecholamine concentration in the brain and in peripheral tissues.

[Effect of ethanol on protein synthesis in the tissues of various organs of guinea pigs]. / Vliianie étanola na sintez belkov v tkaniakh razlichnykh organov morskikh svinok.

Long-term administration (for three months) of ethanol has been studied for its effect on the composition and synthesis of electrophoretic fractions of soluble proteins of the liver, brain, heart, kidneys and adrenals tissues in the guinea pigs. The obtained data permit supposing that the quantitative redistribution of the fractions under study as influenced by ethanol is due to their aggregation. Most of the studied tissues demonstrate a decrease in specific radioactivity of total proteins and 5 of 8-9 recorded electrophoretic fractions. Only one fraction in the heart and brain has been characterized by an increase of the protein synthesis level. The authors' results and data from literature make it possible to conclude that while analyzing pathogenesis of the chronic intoxication by ethanol and alcoholism the quantitative redistribution of soluble proteins and suppression of their synthesis in various tissues should be taken into account.

[The acute and chronic action of ethanol on blood serum proteins in rats]. / Ostroe i khronicheskoe deistvie étanola na belki syvorotki krovi krys.

The results of electrophoresis of blood serum proteins (BSP) in rats evidence that degradation of lipoproteins and one polypeptide of the postalbumin zone was observed after a single administration of ethanol in a dose of 4 g/kg. A daily administration of ethanol for one month was attended by a quantitative redistribution of BSP fractions due to their aggregation. The comparison of the effects of ethanol and acetaldehyde suggests that the change in BSP spectra observed under long-term alcoholization is produced by acetaldehyde action and is connected with the formation of polypeptide complexes. At a single and long-term use of ethanol there were no changes in the concentrations of common BSP.