IMPROVEMENT OF COGNITIVE FUNCTION IN WISTAR RATS UNDER CHRONIC STRESS CONDITIONS WITH MELATONIN.

Stress is a significant factor affecting cognitive functions such as memory, attention and learning ability. This paper examined the effects of melatonin at different dosages on cognitive performance compared to choline alphoscerate on wistar line rats under chronic stress conditions. The studied rats were subjected to stress - Porsolt's forced swim test.

Adherence to Preoperative Fasting Guidelines in Elective Surgical Patients.

Introduction: Preoperative fasting is recommended by international guidelines as a means to minimize the risk of aspiration of gastric content during induction of anesthesia or surgery. Prolonged preoperative fasting is, however, discouraged due to the associated side effects such as dehydration and electrolyte imbalance, which can negatively impact recovery after surgery. An initial quality improvement study revealed poor implementation of the best practice guidelines on preoperative fasting in three departments of a hospital and an institutional action plan was devised to enforce adherence to these guidelines.

Application of Artificial Intelligence in Cardiology: A Bibliometric Analysis.

Recent advancements in artificial intelligence (AI) applications in medicine have been significant over the past 30 years. To monitor current research developments, it is crucial to examine the latest trends in AI adoption across various medical fields. This bibliometric analysis focuses on AI applications in cardiology.

Matrix-assisted laser desorption/ionization matrix incorporation evaluation algorithm for improved peak coverage and signal-to-noise ratio in mass spectrometry imaging.

Rationale: Despite decades of implementation, the selection of optimal sample preparation conditions for matrix-assisted laser desorption/ionization (MALDI) imaging is still ambiguous due to the lack of a universal and comprehensive evaluation methodology. Thus, numerous experiments with different matrix application conditions accompany a translation of the method to novel sample types and matrices.

Methods: Mouse brain tissues were covered with 9-aminoacridine through sublimation, followed by recrystallization in vapors of 5% (v/v) methanol solution in water.

Ac-DEVD-CHO (caspase-3/DEVDase inhibitor) suppresses self-incompatibility-induced programmed cell death in the pollen tubes of petunia (Petunia hybrida E. Vilm.).

Programmed cell death (PCD) is relevant to many aspects in the growth and development of a plant organism. In their reproduction, many flowering plant species possess self-incompatibility (SI), that is an intraspecific reproductive barrier, which is a genetic mechanism ensuring the avoidance of inbreeding depression by preventing self-pollination. This phenomenon enhances intraspecific variation; however, SI is rather a hindrance for some fruit plant species (such as plum, cherry, and peer trees) rather than an advantage in farming.

Application of Chemical Metallization of Photopolymer Structures Additive Technology in the Production of Components for Electronic Devices.

In this paper, we studied the operability of various components of vacuum electronic devices manufactured using the novel chemical metallization of photopolymer 3D-printed structures technology (CMPS), which is being applied at the Institute of Applied Physics, Russian Academy of Sciences (IAP RAS), for operation from microwave to sub-terahertz ranges. The key feature of this production method is the 3D printing (SLA/DLP, MJM technologies) of products and their further metallization. The paper presents the main stages of the process of chemical copper plating of polymer bases in various electrodynamic systems with complex shapes.

A Molecular Orchestration of Plant Translation under Abiotic Stress.

The complexities of translational strategies make this stage of implementing genetic information one of the most challenging to comprehend and, simultaneously, perhaps the most engaging. It is evident that this diverse range of strategies results not only from a long evolutionary history, but is also of paramount importance for refining gene expression and metabolic modulation. This notion is particularly accurate for organisms that predominantly exhibit biochemical and physiological reactions with a lack of behavioural ones.

Biogeochemical Factors of Cs, Sr, U, Pu Immobilization in Bottom Sediments of the Upa River, Located in the Zone of Chernobyl Accident.

Laboratory modeling of Cs, Sr, U, Pu immobilization by phytoplankton of the river Upa, affected after the Chernobyl accident, has been carried out. Certain conditions are selected for strong fixation of radionuclides in bottom sediments due to biogeochemical processes. The process of radionuclide removal from the water phase via precipitation was based on their accumulation by phytoplankton, stimulated by nitrogen and phosphorus sources.

The Comparative Analysis of the Ruminal Bacterial Population in Reindeer ( L.) from the Russian Arctic Zone: Regional and Seasonal Effects.

The reindeer ( L.) is a unique animal inhabitant of arctic regions. Low ambient temperatures and scant diets (primarily, lichens) have resulted in different evolutional adaptations, including the composition of the ruminal microbiota.

Assessing Risk in Graphically Presented Financial Series.

It has been argued that traders use their natural sensitivity to the fractal properties of price graphs to assess risk and that they are better able to do this when given price change as well as price level information. This approach implies that risk assessments should be higher when the Hurst exponents are lower, that this relationship should be stronger in the presence of price change information and that risk assessment should depend more strongly on the Hurst exponent than on the standard deviation of the series. Participants in Experiment 1 decided which of two assets was riskier by inspecting graphs of their price series.

[Anaesthesia and intensive care during intraoperative intraperitoneal hyperthermic chemotherapy in patients with gastric cancer (literature review and own clinical experience)].

Unlabelled: Despite a steady decline in the incidence in recent decades, gastric cancer remains one of the most frequent causes of death from cancer in the world. By the time of diagnosis the tumor process is locally advanced or generalized in nearly 70% of patients that reduces the possibility of radical surgical treatment. Peritoneal carcinomatosis is a one of the main causes of treatment failure.

Proton three-demensional conformal radiosurgery of arteriovenous malformation of the brain.

The proton beam radiosurgery was performed to 65 patients with brain AVM since December, 2001 till February, 2012, in Joint Institute for Nuclear Research, Dubna, Russia. We have analyzed data for 56 patients. The follow up time varied from 24 to 109 months.

Effects of heavy metal contamination upon soil microbes: lead-induced changes in general and denitrifying microbial communities as evidenced by molecular markers.

Lead (Pb) is a common environmental contaminant found in soils. Unlike other metals, Pb has no biological role, and is potentially toxic to microorganisms. Effects of low (1 ppm) and high (500-2000) levels of lead (Pb) upon the soil microbial community was investigated by the PCR/DGGE analysis of the 16S and nirK gene markers, indicative of general microbial community and denitrifying community, respectively.

Wheat coleoptile endonuclease Wen2 is dependent on S-adenosyl-L-methionine and sensitive to DNA methylation status.

Endonuclease WEN2 with an apparent molecular mass 21.5 kD was isolated from subcellular vesicular fraction obtained from aging apoptotic coleoptiles of 8-day-old etiolated wheat seedlings and partially characterized. Similar to wheat endonuclease WEN1 of the same origin described earlier, the WEN2 enzyme is a neutral Ca2+,Mg2+,Mn2+-dependent endonuclease.

Wheat endonuclease WEN1 dependent on S-adenosyl-L-methionine and sensitive to DNA methylation status.

Ca(2+)-, Mg(2+)-dependent wheat endonuclease WEN1 with molecular mass of about 27 kDa was isolated from coleoptyles. Methylated DNA of lambda phage grown on E. coli dam(+), dcm(+) cells was hydrolyzed by WEN1 more effectively than DNA of phage grown on dam(-), dcm(-) cells.

[Application of magnetic therapy in acute paraproctitis].

There were studied the possibilities and perspectives of application of the magnetically liquefied layer as an instrument for better purulent and putrefactive wounds clearance after intervention for an acute paraproctitis. Together with clinical signs the results of bacteriological investigation were controlled as well. There was established high efficacy of the method proposed and expedience of its application.

Comparing denitrification estimates for a Texas estuary by using acetylene inhibition and membrane inlet mass spectrometry.

Characterizing denitrification rates in aquatic ecosystems is essential to understanding how systems may respond to increased nutrient loading. Thus, it is important to ensure the precision and accuracy of the methods employed for measuring denitrification rates. The acetylene (C2H2) inhibition method is a simple technique for estimating denitrification.

Evidence for rapid microscale bacterial redox cycling of iron in circumneutral environments.

The potential for microscale bacterial Fe redox cycling was investigated in microcosms containing ferrihydrite-coated sand and a coculture of a lithotrophic Fe(II)-oxidizing bacterium (strain TW2) and a dissimilatory Fe(III)-reducing bacterium (Shewanella alga strain BrY). The Fe(II)-oxidizing organism was isolated from freshwater wetland surface sediments which are characterized by steep gradients of dissolved 02 and high concentrations of dissolved and solid-phase Fe(II) within mm of the sediment-water interface, and which support comparable numbers (10(5)-10(6) mL(-1)) of culturable Fe(II)-oxidizing and Fe(III)-reducing reducing. The coculture systems showed minimal Fe(III) oxide accumulation at the sand-water interface, despite intensive O2 input from the atmosphere and measurable dissolved O2 to a depth of 2 mm below the sand-water interface.

Suboxic deposition of ferric iron by bacteria in opposing gradients of Fe(II) and oxygen at circumneutral pH.

The influence of lithotrophic Fe(II)-oxidizing bacteria on patterns of ferric oxide deposition in opposing gradients of Fe(II) and O(2) was examined at submillimeter resolution by use of an O(2) microelectrode and diffusion microprobes for iron. In cultures inoculated with lithotrophic Fe(II)-oxidizing bacteria, the majority of Fe(III) deposition occurred below the depth of O(2) penetration. In contrast, Fe(III) deposition in abiotic control cultures occurred entirely within the aerobic zone.

[Changes in the vitamin content of various cereals during storage].

Thiamine and niacin losses were studied in various cereals (grinding millet, non-grinding oatmeal, fine-ground corn, grinding rice, wheat Poltavskaya, buckwheat, pearl-barley, and grinding pea) stored in sacks at store-houses in two different climatic areas of the USSR - with a temperate and with a dry hot climate, as well as at a constant temperature of 10 degrees C, during 6-29 months. Vitamin losses in grinding millet, non-grinding oatmeal and grinding rice were evaluated considering their treatment with methyl bromide and cereal cooking. It was found that during the storage under conditions of a dry hot climate thiamine and niacin losses comprised 37.