[Assessment of visual functions within the sensory domain of intrinsic capacity in older adults].

Unlabelled: Intrinsic capacity and quality of life of older adults are determined by many factors, including the functional state of the organ of vision.

Purpose: This study assessed the visual functions of elderly residents of Northern European Russia and examined the relationship between visual impairment and sociodemographic characteristics, ophthalmic conditions, and preservation of work capacity and social functions.

Material And Methods: This cross-sectional study included a random population sample of older adults (ages 60-74) from Arkhangelsk, Russia (=604).

Life history and re-description of Spilosoma erythrozona (Kollar, [1844]) from Pakistan (Lepidoptera: Erebidae: Arctiinae).

N/A.

[Analysis of vitamin A and thyroid blood levels in the indigenous and local Caucasian population of the Arctic].

Previously, differences in the thyroid profile of Arctic residents were shown depending on the vitamin A blood level. However, dietary habits and metabolism peculiarities in the aboriginal and Caucasian representatives of the North population may be the cause of different retinol supply and therefore be one of the reasons for changes in their thyroid activity. of the research was to assess vitamin A and thyroid blood levels in the aboriginal and local Caucasian population representatives of the Russian Arctic territories.

[Insulin level, glycemia, insulin resistance and β-cell function in relation to the lifestyle of Arctic indigenous people. Are there conditions for diabetes and which type?].

Background: Modern studies suggest that lifestyle changes of the indigenous Arctic residents lead to the loss of the "adaptive polar type of metabolism", which is characterized by the intensification of protein metabolism, optimization of lipid metabolism, and minimization of carbohydrate metabolism at low insulin concentrations. How to survive the era of change?

Aim: To assess insulinemia, glycemia, β-cell secretory activity, and insulin sensitivity in Arctic indigenous people in relation to their lifestyle.

Materials And Methods: A cross-sectional study of a population of indigenous Arctic residents (Nenets, Komi) aged from 22 to 60 years was conducted.

A high-altitude population of Hyperboreomyzon polaris (Hirudinea: Glossiphoniidae) in Altai Mountains, South Siberia, Russia.

Hyperboreomyzon polaris Bolotov, Eliseeva, Klass & Kondakov, 2022 (Hirudinea: Glossiphoniidae) is an enigmatic freshwater leech that was recently described based on three specimens from two remote regions of the Eurasian Arctic, that is, the Kolguev Island and Putorana Plateau, Russia. Later on, misidentified historical samples of this species were discovered in the Hirudinea collection of Zoological Institute of the Russian Academy of Sciences (St. Petersburg, Russia).

Pigment Complex, Growth and Chemical Composition Traits of Boreal Mosses (Mire System "Ilasskoe", North-West of European Russia).

mosses play a significant role in peat formation and carbon sequestration in mire ecosystems. It is critical to investigate the productivity and chemical composition of different species in order to assess their role in the global carbon cycle and potential in light of climate change. The data on productivity and growth characteristics during the growing season, group chemical composition and elemental composition at the beginning and end of the growing season, as well as aspects of the pigment complex operation, were collected for four species: Schimp.

Bog bacterial community: data from north-western Russia.

Wetlands occupy up to 35% of the boreal biome in Russia, according to various estimates. Boreal bogs are global carbon sinks, accounting for more than 65% of the soil carbon stored in the wetland ecosystems of the world. The decomposition of plant residues is one of the most important components of the carbon cycle in wetland systems, while the violation of their fragile balance due to climate change increases the rate of mineralisation of organic matter and releases large amounts of carbon to the atmosphere.

: Updates on egg morphology, host range, and distribution.

During a survey for helminths in reindeer () across the Palearctic region, eggs were found in zoo reindeer feces. These were identified as eggs of based on their morphology, morphometrics, location, and analysis of their partial sequence of ITS rDNA region. Some of the eggs had an appendage, previously unreported.

Assessment of water supply to the east European arctic agglomeration from groundwater, taking into account their quality and health risks.

The purpose of the study is to assess the possibilities of using groundwater for water supply in the East European Arctic agglomeration based on an assessment of their quality and health risks. For this purpose, high-precision determinations of the complete macro- and microcomponent composition were carried out in sixty-six water samples taken from wells up to 180 m deep. It was found that in some samples the concentrations of Na+, Fe, B, Ba, Mn and U exceeded WHO standards.

Organic carbon, major and trace element release from and adsorption onto particulate suspended matter of the Ob River, western Siberia.

Particulate suspended matter (PSM) of rivers is a significant factor for carbon, nutrient, and trace metal transfer from land to ocean. Towards better understanding the role that PSM exerts on major and trace elements in riverine systems, here we report the results of an experimental study which utilizes a two-fold approach to assess interaction between PSM and riverine solutes. First, we measured element leaching (via desorption and dissolution in distilled water, simulating snow melt) from PSM of the largest Siberian river, the Ob River.

High plasticity of temperament as a marker of flexible autonomic regulation of the cardiovascular system in urgent adaptive response to cold in young people.

The properties of temperament are due to differences in the excitability of brain systems that integrate the behavior of an individual, his emotions and autonomic functions and play an important role in the adaptation of the body to the environment. The mechanisms of the relationship between individual characteristics of temperament properties and regulation of the cardiovascular system have not been fully elucidated. The aim of this study to assess the relationship between expression of temperament traits and the autonomic regulation of the cardiovascular system in the baseline condition and in response to exposure to cold.

[Study of the photoperiodic dynamics of the peripheral dopamine content in comparison with the thyroid profile in various groups of men from the European North].

Background: Knowledge of the physiological mechanisms of adaptation arising in response to changes in photoperiods is especially important for residents of the European North. In the literature, there is practically no information about photoperiodic dynamics of serum dopamine level, despite its significant role in the regulation of the body's activity. The mutual modulating effect of the dopaminergic and thyroid systems is known.

Fluvial carbon dioxide emissions peak at the permafrost thawing front in the Western Siberia Lowland.

In order to foresee the impact of permafrost thaw on CO emissions by high-latitude rivers, in-situ measurements across a permafrost and climate/vegetation gradient, coupled with assessment of possible physico-chemical and landscape controlling factors are necessary. Here we chose 34 catchments of variable stream order (1 to 9) and watershed size (1 to >10 km) located across a permafrost and biome gradient in the Western Siberian Lowland (WSL), from the permafrost-free southern taiga to the continuous permafrost zone of tundra. Across the south-north transect, maximal CO emissions (2.

In vitro Immunostimulant Activity of the Polyphenolic Extract from the Arctic Brown Algae Fucus vesiculosus.

Polyphenols (PP) found in brown algae are known for their wide range of biological activities including noteworthy antitumor properties. This article presents a method for obtaining an active polyphenolic extract from the Arctic alga Fucus vesiculosus with 98% purity and radical scavenging activity equivalent to 862 mg of ascorbic acid per gram of extract. Immunostimulant effects of polyphenols were assessed in vitro using venous blood from two groups of people: healthy people (HP) and people with chronic undifferentiated lymphocytic leukemia (LP).

Prospects for Using Computer Accommodography to Predict Myopia Development in Young Adults.

The diagnostic value of the computer accommodation method remains insufficiently studied. Accommodative and refractive error is a common problem, accounting for 23% of the world's population. The aim of the study was to investigate the objective parameters of accommodative insufficiency in young people with and without myopia.

Integrative phylogenetic, phylogeographic and morphological characterisation of the Unio crassus species complex reveals cryptic diversity with important conservation implications.

The global decline of freshwater mussels and their crucial ecological services highlight the need to understand their phylogeny, phylogeography and patterns of genetic diversity to guide conservation efforts. Such knowledge is urgently needed for Unio crassus, a highly imperilled species originally widespread throughout Europe and southwest Asia. Recent studies have resurrected several species from synonymy based on mitochondrial data, revealing U.

Fatty Acids in the Eggs of Red King Crabs from the Barents Sea.

The red king crab, , was introduced into the Barents Sea where, after a period of 30 years of adaptation, it has established a new population. This population has been commercially exploited over the past two decades, supporting profitable fisheries in both Russia and Norway. Biochemical studies aimed at assessing fatty acid profiles have been conducted, focusing primarily on the edible parts of red king crabs.

Size matters: Aerobic methane oxidation in sediments of shallow thermokarst lakes.

Shallow thermokarst lakes are important sources of greenhouse gases (GHGs) such as methane (CH ) and carbon dioxide (CO ) resulting from continuous permafrost thawing due to global warming. Concentrations of GHGs dissolved in water typically increase with decreasing lake size due to coastal abrasion and organic matter delivery. We hypothesized that (i) CH oxidation depends on the natural oxygenation gradient in the lake water and sediments and increases with lake size because of stronger wind-induced water mixing; (ii) CO production increases with decreasing lake size, following the dissolved organic matter gradient; and (iii) both processes are more intensive in the upper than deeper sediments due to the in situ gradients of oxygen (O ) and bioavailable carbon.

Description of Prozorovia, a new genus from Pakistan and India (Lepidoptera: Erebidae: Arctiinae: Lithosiini).

The genus Wittia de Freina, 1980 was described for Bombyx aureola Hbner, [1803] (a junior synonym of Wittia sororcula (Hufnagel, 1766)), which in the modern sense is a paraphyletic taxon containing three groups of species. This study (1) describes a new genus, Prozorovia gen. nov.

[Evaluation of specific IgG content to nutritional antigens in patients with metabolic syndrome].

Specific antibodies to food antigens are detected both in healthy individuals and in various pathologies, including those of the gastrointestinal tract, neuro- and autoimmune diseases. In fact, there are no studies concerning the level of specific IgG to food antigens in metabolic syndrome. A comparative analysis of the concentration of specific IgG to food antigens in patients with metabolic syndrome and healthy people was carried out.

Contrasted redox-dependent structural control on Fe isotope fractionation during its adsorption onto and assimilation by heterotrophic soil bacteria.

Despite the importance of structural control on metal stable isotope fractionation in inorganic and abiotic systems, the link between metal structural changes and related isotopic fractionation during reactions with organic surfaces and live cells remains poorly established. We conducted reversible adsorption of Fe(II) and Fe(III) on the surface of exopolysaccharide (EPS)-rich and EPS-poor , and we allowed Fe intracellular uptake by growing cells. We analyzed the Fe isotopic composition of the remaining fluid and cell biomass, and compared the isotopic fractionation during adsorption and assimilation reaction with relative changes in Fe structural status between aqueous solution and bacterial cells, based on available and newly collected X-ray absorption spectroscopy (XAS) observations.