Mercury content and the ratio of stable nitrogen isotopes in the hair of residents from industrial city and specially protected natural area of Russia.

The mercury content in the hair of residents in the industrial city of Cherepovets (0.297 mg/kg) is three times lower than that of residents in the specially protected natural area of Kirillovsky district (0.877 mg/kg), which is approximately 110 km away from Cherepovets.

Dynamics of the total mercury content in the hair of adolescent residents of the industrial center of Northwest Russia (Cherepovets City).

Total mercury content dynamics were evaluated in the hair of adolescent residents of the industrial center of North West Russia. The content of total mercury varied from less than 0.002 to 0.

Total mercury in fur, whiskers and whole blood of Caspian seals (Pusa capsica) from north-east of Caspian Sea (Kazakhstan).

Total Mercury (THg) content was determined in the fur of 64 Caspian seals, in the whiskers of 59 individuals and whole blood of 29 individuals. The THg content in Caspian seal fur varied from 258 to 8511 μg/kg, in whiskers from 954 to 12,957 μg/kg, and in whole blood from 88 to 350 μg/l. There were no statistically significant differences in mercury concentration in biomaterial between males and females (Kruskal-Wallis test, p < 0.

Hair Mercury Levels in Pregnant Women: Fish Consumption as a Determinant of Exposure.

The consumption of fish in food may contain mercury, a harmful element and dangerous chemical detrimental to human health. The purpose of this study was to determine the mercury level in the hair of pregnant women with different fish intakes in their diets. The concentration of total mercury in hair was determined using an atomic absorption spectrometer.

Effects of lipid extraction on stable isotope ratios of carbon and nitrogen in muscles of freshwater fish.

The extraction of lipids by the Folch method from the muscles of all the fish studied led to statistically significant differences in the values of N. At the same time, lipid extraction led to a statistically significant increase in C in pike and roach, and to a statistically insignificant decrease in C in perch and bream. Thus, lipid extraction cannot serve as a universal method of sample preparation for the analysis of the isotopic composition of carbon (C/C) and nitrogen (N/N) in fish muscles.

Mercury levels in sediment, fish and macroinvertebrates of the Boroo River, northern Mongolia, under the legacy of gold mining.

Gold mining is currently one of the main anthropogenic sources of mercury in the environment. In this study, the total mercury content was measured in bottom sediments, benthic macroinvertebrates (mayfly larvae), and fish (Siberian dace) along the Boroo River in northern Mongolia. There was a gold recovery plant in the middle reaches of the river until the mid-twentieth century; an accident there in the 1950s caused a mercury spill.

High variability of mercury content in the hair of Russia Northwest population: the role of the environment and social factors.

Purpose: The purpose of this work is to study mercury levels in the hair of different social and demographic groups of the population of the Vologda region in Northwest Russia. This region is selected due to a heterogeneous distribution of rivers and lakes-a resource base for fishing.

Methods: The mercury content was determined in the hair from the root with a length of about 2 cm.

Cardiometabolic risk factors and mercury content in hair of women from a territory distant from mercury-rich geochemical zones (Cherepovets city, Northwest Russia).

For the first time in the Russian Federation, a study was conducted to determine the level of mercury in the hair of young and middle-aged women with or without metabolic syndrome (MS) and the Association of mercury content in hair with cardiometabolic risk factors. The studied cohort consisted of 387 women (204 with metabolic syndrome and 183 without metabolic syndrome as controls). The mercury content in the hair was determined by atomic absorption pyrolysis.

Factors affecting the mercury concentration in the hair of young residents of the Vologda region, Russia.

The main aim of this study was to assess the level of mercury accumulation in the hair of students studying in the Vologda Region, Russia. Particular attention is devoted to clarifying the relationship between the metal concentration in the hair and the amount of fish in the diet. It was found that the mercury content in the hair of Vologda Region residents aged 17-21 is in the range from less than 0.

Long-term dynamics of total mercury in surficial bottom sediments of the Volga River's reservoir in central Russia.

The long-term dynamics of mercury in bottom sediments of Uglich Reservoir were examined. Samples of the 0-5-cm surface layer of bottom sediment collected during research expeditions in 1958, 1977, 1991, and 2012 were analyzed. An increase in the average mercury concentration from 1958 to 1977 (0.

Mercury in soil, earthworms and organs of voles Myodes glareolus and shrew Sorex araneus in the vicinity of an industrial complex in Northwest Russia (Cherepovets).

The characteristic properties of uptake and distribution of mercury in terrestrial ecosystems have received much lesser attention compared to aquatic particularly in Russia. Terrestrial ecosystems adjacent to large industrial manufactures-potential sources of mercury inflow into the environment frequently remain unstudied. This is the first report on mercury (Hg) levels in the basic elements of terrestrial ecosystems situated close to a large metallurgical complex.

Mercury Content in Organs and Tissues of Indigenous (Vulpes vulpes L.) and Invasive (Nyctereutes procyonoides Gray.) Species of Canids from Areas Near Cherepovets (North-Western Industrial Region, Russia).

Trophic and spatial components of ecological niches of two canids native Vulpes vulpes and introduced Nyctereutes procyonoides are overlapping partially in the studied region. Maximum concentrations of mercury in predatory mammals of Canidae family from surroundings of Cherepovets have been determined in liver and kidneys (over 0.50 mg/kg wet weight), with minimal concentrations in brain (<0.

Binding Potency of Heparin Immobilized on Activated Charcoal for DNA Antibodies.

In vitro experiments showed that heparin adsorbed on activated charcoal can bind antibodies raised against native and single-stranded DNA in a diluted sera pool with a high level of these DNA. Thus, heparin used as anticoagulant during hemosorption procedure can demonstrate supplementary therapeutic activity resulting from its interaction with various agents involved in acute and chronic inflammatory reactions such as DNA- and RNA-binding substances, proinflammatory cytokines, complement components, growth factors, etc. Research and development of heparin-containing carbonic adsorbents for the therapy of numerous inflammatory and autoimmune diseases seems to be a promising avenue in hematology.

Environmental survey in the Tuul and Orkhon River basins of north-central Mongolia, 2010: metals and other elements in streambed sediment and floodplain soil.

Streambed sediment and subsurface floodplain soil were sampled for elemental analyses from 15 locations in river basins of north-central Mongolia during August 2010. Our primary objective was to conduct a reconnaissance-level assessment of potential inputs of toxicologically important metals and metalloids to Lake Baikal, Russia, that might originate from mining and urban activities within tributaries of the Selenga River in Mongolia. Samples were collected in triplicate from all sites, then dried, and sieved to <2 mm for analysis by portable X-ray florescence spectroscopy and by inductively coupled plasma mass spectrometry after digestion with concentrated nitric and hydrochloric acids.

[Extracorporeal treatments for some autoimmune eye diseases].

Fifty-three patients with eye diseases caused by autoimmune disorders received complex treatment involving extracorporeal techniques, such as hemosorption, plasmapheresis, and double cascade plasma filtration in combination with pulse therapy. Clinical, laboratory, morphometric, and biochemical studies show the efficacy of hemosorption in relieving acute manifestations of an inflammatory process and the stabilizing action of these methods on ocular epithelial tissue, immunological activity, and systemic manifestations of the underlying disease.

[Non-specific hemosorption: current state and prospects].

Results of experimental and clinical evaluation of the method of nonspecific hemosorption obtained in the Laboratory of Clinical Immunology and Republican Centre for Application of Extracorporeal Therapies, Research Institute of Physical and Clinical Medicine, since 1985 are presented. Analysis of these and literature data on the efficiency of hemosorption in non-toxicological practice allows for the conclusion of socio-medical and economic feasibility of more extensive application of the method.

[Impact of cooking on the content of fish mercury].

Changes in the levels of mercury in the fish inhabiting the water reservoirs of Russia were studied after cooking it in a variety of ways (boiling for different time periods, roasting, and smoking). To have a general idea of the impact of various procedures for cooking the fish on its mercury amount, the authors measured mercury concentrations in smoked perch and manufactured and homemade canned salt-and fresh-water fishes. The absolute content of mercury in the fish is shown to be unchanged during its cooking and not to depend on the procedure and duration of the latter.

[Regeneration of freshwater planarians Dugesia tigrina and Polycelis tenuis under the influence of methyl mercury compounds of natural origin].

We studied the effects of methyl mercury compounds of natural origin on regeneration of the planarians Dugesia tigrina and Polycelis tenuis. Accumulation of methyl mercury in the planarian body leads to a delayed formation of photoreceptor organs in planarians of both species. After a significant traumatic load, the regeneration is suppressed and the death of some control and most experimental animals was observed.

[Effect of phytohormones on the protein-synthesizing ability of rauwolfia serpentina benth. tissue culture].

The accumulation of intracellular protein by the callus culture of Rauwolfia serpentina Benth. was studied in a standard or phytohormone-containing medium. Changes in the concentration of total protein in cells induced by indolylacetic and naphthylacetic acids were shown to be associated with the effects of these phytohormones on the biosynthesis and degradation of intracellular protein.

[Insulin degradation in hepatocytes and erythrocytes of rats in normal condition and in experimental diabetes].

Insulin metabolism in erythrocytes and hepatocytes of normal and experimental diabetic rats was studied. Insulin-degrading complex of erythrocytes and hepatocytes was investigated at low insulin concentration in blood. Kinetic parameters of insulinase depend on insulin concentration in blood have shown.

[Sequential isolation of superoxide dismutase and ajmaline from a tissue culture of Rauwolfia serpentina Benth].

Two biologically active compounds, the enzyme superoxide dismutase (EC 1.15.1.

[Hormonal regulation of non-lysosomal proteinase in rat hepatocytes].

The effects of exogenic and metabolite-induced insulin and glucagon on rat hepatocyte serine proteinase metabolism were studied. The enzyme functioning time was assessed, as were the constants of synthesis and disintegration rates of proteinase localized in various parts of the cell. Chromatographic, electrophoretic, and radioimmunochemical methods of analysis were used in the study.