ASSESSMENT OF SURVIVAL OF ZYGOMATIC IMPLANTS AND ROOT DENTAL IMPLANTS

Currently, dental implantation has taken a leading position in the complex treatment of various dental diseases as the main and the most progressive method of restoring the quality of life of patients. Work is devoted to studying of implants survival at 29 patients of specialized unit of multi-speciality hospital. 68 zygomatic implants and 137 root dental implants were set up to these patients. Implants were set up to get stomatologic rehabilitation of patients with the acquired adentia of jaws. The comparative assessment of survival of zygomatic and dental implants was carried out, the period of observation was 36 months. The assessment of survival of root dental implants at all patients operated for the reporting period of time was carried also out

Investigating organic aerosol loading in the remote marine environment

Aerosol loading in the marine environment is investigated using aerosol composition measurements from several research ship campaigns (ICEALOT, MAP, RHaMBLe, VOCALS and OOMPH), observations of total AOD column from satellite (MODIS) and ship-based instruments (Maritime Aerosol Network, MAN), and a global chemical transport model (GEOS-Chem). This work represents the most comprehensive evaluation of oceanic OM emission inventories to date, by employing aerosol composition measurements obtained from campaigns with wide spatial and temporal coverage. The model underestimates AOD over the remote ocean on average by 0.02 (21 %), compared to satellite observations, but provides an unbiased simulation of ground-based Maritime Aerosol Network (MAN) observations. Comparison with cruise data demonstrates that the GEOS-Chem simulation of marine sulfate, with the mean observed values ranging between 0.22 μg m−3 and 1.34 μg m−3, is generally unbiased, however surface organic matter (OM) concentrations, with the mean observed concentrations between 0.07 μg m−3 and 0.77 μg m−3, are underestimated by a factor of 2–5 for the standard model run. Addition of a sub-micron marine OM source of approximately 9 TgC yr−1 brings the model into agreement with the ship-based measurements, however this additional OM source does not explain the model underestimate of marine AOD. The model underestimate of marine AOD is therefore likely the result of a combination of satellite retrieval bias and a missing marine aerosol source (which exhibits a different spatial pattern than existing aerosol in the model)

Определение хлорсодержащих соединений в дезинфицирующих средствах с использованием ионообменной хроматографии

Objectives. To develop a method for the determination of hypochlorite, chloride, chlorite, chlorate, and perchlorate ions in solution; to determine the limits of detection and quantitation for ClO−, Cl−, ClO2−, ClO3−, and ClO4− ions; to evaluate the applicability of the developed method and its suitability for disinfectant analysis.Methods. Ionic chromatography using a conductometric detection system in isocratic elution mode.Results. The method developed for chromatographic determination of chlorine-containing ions can be used to quantify the content of hypochlorite, chloride, chlorite, chlorate, and perchlorate ions. In isocratic elution mode at 7.5 mM NaOH and a flow rate of 0.4 mL/min, the content of chlorine-containing ions can be determined with high sensitivity. The presented method does not require the use of expensive equipment for the ultrasensitive analysis of the studied compounds.Conclusions. A novel method for the simultaneous determination of hypochlorite, chloride, chlorite, chlorate, and perchlorate ions in case of their combined presence is proposed. The technique can be used to carry out routine control of the content of these disinfectant components during use, increasing their effectiveness at the same time as managing associated toxicological risks.Цели. Разработать методику определения гипохлорит-, хлорид-, хлорит-, хлорати перхлорат-ионов при их совместном присутствии в дезинфицирующих средствах. Определить пределы обнаружения и пределы количественного определения ионов ClO−, Cl−, ClO2−, ClO3−, ClO4−. Провести расчеты валидационных параметров разработанной методики, а также оценить ее пригодность для анализа дезинфицирующих средств.Методы. Ионообменная хроматография с системой кондуктометрического детектирования в изократическом режиме элюирования.Результаты. Новая методика хроматографического определения хлорсодержащих ионов позволяет количественно оценить содержание гипохлорит-, хлорид-, хлорит-, хлорат- и перхлорат-ионов при их одновременном нахождении в модельном растворе и в дезинфицирующих средствах. Изократический режим элюирования 7.5 мМ NaOH при скорости движения потока 0.4 мл/мин позволяет с высокой чувствительностью определять ионы, содержащие атом хлора. Разработанная методика не требует использования дорогостоящего оборудования, необходимого для сверхчувствительного анализа исследуемых соединений.Выводы. Впервые предложена методика определения гипохлорит-, хлорид-, хлорит-, хлорат- и перхлорат-ионов при совместном присутствии. Ожидается, что разработанная методика позволит проводить рутинный контроль содержания этих компонентов в дезинфицирующих средствах при их практическом использовании, что приведет к повышению эффективности применения дезинфектантов на их основе и снижению возможных токсикологических рисков

Gut Microbiota and its Metabolites in Pathogenesis of NAFLD

Aim: to provide information on the results of recent scientific research in the field of non-alcoholic fatty liver disease (NAFLD) metabolomic profiling.Key points. Metabolites of microbial origin are important biological molecules involved in many specific reactions of the human body. This literature review presents the results of recent studies in the field of metabolomics in patients with NAFLD. A more detailed understanding of the role of individual metabolites or their combinations in the NAFLD pathogenesis will allow us to determine the vector of further diagnostic and therapeutic approaches for this nosology. The research results of the probiotics effect on the levels of certain metabolites are currently being discussed.Conclusion. New research data in the field of studying the human metabolomic profile are presented. The results allow us to summarize the effects of microbial agents and their metabolites in the formation of changes in the liver parenchyma in the context of NAFLD. Changes in the level of endogenous ethanol, secondary bile acids, aromatic amino acids, branched chain amino acids, etc. have been described. Correlation between metabolites and certain bacterial strains has been established. A correlation between the ratio of bacteria types and clinical/laboratory parameters was noted in patients taking prebiotics

Inflammation, impaired motor function and visceral hypersensitivity: the main mechanisms of functional disorders of the gastrointestinal tract (materials of the Expert Council and literature review)

Aim. To review the main mechanisms of functional disorders of the gastrointestinal tract and to present the materials of an Expert Council, which was held on 10 December 2021 in Moscow.Key points. The pathogenesis of the most common functional diseases of the gastrointestinal tract — functional dyspepsia (FD) and irritable bowel syndrome (IBS) is multifactorial and includes motor disorders of various parts of the gastrointestinal tract, visceral hypersensitivity, changes in the intestinal microbiome, impairment of the permeability of the protective barrier, low-grade inflammation of the gastrointestinal mucosa, etc. This often leads to the prescription of a complex of various medications to such patients, which increases the risk of undesirable drug interactions and side effects. Multitargeted therapy involves the use of drugs that simultaneously affect different pathogenetic links. One of these drugs is Iberogast®, which normalizes gastrointestinal motility and visceral sensitivity, has an anti-inflammatory action and is highly effective in treatment of FD and IBS.Conclusion. In the treatment of functional gastrointestinal diseases characterized by multifactorial pathogenesis, preference should be given to multi-targeted therapy with the use of drugs that have an effect on its various links

Harm and benefits of physical culture for pregnant women

This article analyzes and identifies which physical exercises are beneficial for pregnant women, and which can harm her and her child. A study was also conducted on which women are easier to endure pregnancy: whose who regularly exercise or those who devote more time to restВ данной статье проанализировано и выявлено, какие физические упражнения идут беременным женщинам на пользу, а какие могут нанести вред ей и её ребёнку. Так же проведено исследование, каким женщинам проще переносить беременность: тем, кто регулярно занимается физкультурой или тем, кто больше посвящает свое время отдыху

ANTIBACTERIAL ACTIVITY OF CARBON-CONTAINING COATINGS

The surface biological effect of nanocarbon coatings, which can be used in the clinical practice of implantology due to their unique properties, has been studied

Peroxidase Activity of Cerium Oxide Nanoparticles in the Maltodextrin Shell

The enzymatic activity of cerium oxide nanoparticles depending on pH was studied. These nanoparticles have broad application in medicine and bioengineering, because of their unique physical and chemical properties