Publications by authors named "Vlasov A"

Unlabelled: Laparoscopy is increasingly used in emergency surgery, demonstrating several advantages over open interventions.

Material And Methods: A systematic literature review for 2018-2023 was performed, searching PubMed, MEDLINE, RSCI, CyberLeninka databases. 33 studies on the use of laparoscopy in acute surgical abdominal diseases were selected.

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Objective: To study several non-respiratory lung functions in conjunction with the respiratory component in acute abdominal diseases with different natures of the inflammatory process; to identify the key mechanisms of organ damage; and, based on the data, establish a new syndrome in urgent surgery-pulmonary distress syndrome-and evaluate the effectiveness of Remaxol in its treatment.

Material And Methods: Chronic experiments have been done on dogs. Under anesthesia, progressive acute peritonitis was simulated in the first group (24) (the first subgroup (12) received infusion therapy, the second subgroup (12) received Remaxol (20 mL/kg)), in the second group (8) acute destructive pancreatitis, in the third group (8) acute obstructive ileus.

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Adenosine triphosphate (ATP) synthases are large enzymes present in every living cell. They consist of a transmembrane and a soluble domain, each comprising multiple subunits. The transmembrane part contains an oligomeric rotor ring (c-ring), whose stoichiometry defines the ratio between the number of synthesized ATP molecules and the number of ions transported through the membrane.

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Carbapenem-resistant (CRE) are a global health threat due to their high morbidity and mortality rates and limited treatment options. This study examines the plasmid-mediated transmission of virulence and antibiotic resistance determinants in carbapenem-resistant () and () isolated from Russian hospitals. : We performed short- and long-read whole-genome sequencing of 53 clinical isolates (48 and 5 ) attributed to 15 genetic lineages and collected from 21 hospitals across nine Russian cities between 2016 and 2022.

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Article Synopsis
  • Ferritin-based hybrids are large macromolecules with potential uses in drug delivery and vaccines, but their design is complicated.
  • Researchers designed hybrids using ferritin from Helicobacter pylori and a Small Ubiquitin-like Modifier, discovering that their assembly was influenced by varying preparation methods.
  • They developed a quantitative model to analyze how different stoichiometries affected the structure of these hybrids, revealing unexpected patterns and establishing a framework for better design of ferritin-based systems.
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Unlabelled: The first maxillary molar is one of the most difficult teeth for endodontical treatment; it presents the highest failure rates due to the impossibility of locating and treating the second mesiobuccal canal (MB2). The aim of our work was study of second mesiobuccal canal in maxillary first molar and compare obtained data with literature sources for increasing the efficiency of treatment.

Materials And Methods: The study involved 59 patients with exacerbation of chronic pulpitis or chronic periodontitis who were distributed according to age: 14-20 years, 21-30 years and 31-40 years.

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One of the promising drug delivery tools is ferritin, which features high stability at a wide range of conditions and protects cargo by its spherical protein shell. We studied the self-assembly into homoglobules of ferritin from H. pylori and a chimeric protein ferritin-SUMO.

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The ArdA DNA-mimic antirestriction proteins inhibit type I restriction-modification (RMI) systems by binding instead of DNA to RMI. The ArdA specificity to DNA methylation sites recognized by RMI complexes remains poorly understood; i.e.

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Heliorhodopsins (HeRs) constitute a novel and distinct group of microbial rhodopsins, characterized by the inverted position of C- and N- termini relative to conventional Type I rhodopsins. The production of HeRs for structural and functional investigations has proven challenging, as evidenced by the structural elucidation of only two proteins and the functional characterization of a few others to date. Notably, no eukaryotic HeRs have been reported thus far.

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Background: Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder that affects a significant proportion of the world's population, particularly children and adolescents. The sensory processing issues can be an evidence-based target for therapeutic/corrective interventions by controlling the intensity and targeted replacement of maladaptive sensory stimuli with neutral stimuli using virtual reality or augmented reality.

Subjects And Methods: We searched for articles on Pubmed.

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Article Synopsis
  • The study investigates employee burnout stemming from prolonged workplace stress and aims to develop techniques to address it, specifically using a virtual reality (VR) and biofeedback intervention called ReViSide.
  • In a randomized controlled trial with 140 adult participants experiencing emotional burnout, one group will use the ReViSide technology while the control group receives traditional psychocorrection, measuring outcomes like emotional burnout and mental health symptoms.
  • The hypothesis is that participants using VR will show more significant improvements in burnout levels, including emotional exhaustion and personal accomplishment, along with potential changes in brain activity linked to lower distress levels.
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Background: We examined the prevalence and spread of conspiracy beliefs about the origins of the COVID-19 pandemic among representatives of the Russian population. Our study aimed to identify belief clusters and develop predictive models to understand the factors that influence conspiracy beliefs, particularly in the context of how they might evolve in response to socio-political events and cause mental disturbances, thus in relation to specific pathways of the infodemic and psychodemic waves that spread among vulnerable population groups.

Methods: Data respondents to the international COMET-G study living in Russia during pandemic period (n=7,777) were analyzed using descriptive statistics, K-means clustering, and various machine learning models, including gradient boosting.

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Unlabelled: Etiologic and pathogenetic aspects cause the most contentious issue in the study of temporomandibular joint (TMJ) syndrome in childhood and adolescence. Some researchers have linked the emergence of this group of diseases with abnormal occlusion, others have more emphasis on the age characteristics of a growing organism, or rather on a number of morphological and psychomotor processes arising and ending at puberty and cause physiological abnormalities in the growing organism. The aim of the study was to improve the method of complex treatment of TMJ dysfunction in adolescence by exploring its development factors with early diagnosis methods.

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Human tissue transglutaminase (tTG) is an intriguing multifunctional enzyme involved in various diseases, including celiac disease and neurological disorders. Although a number of tTG inhibitors have been developed, the molecular determinants governing ligand binding remain incomplete due to the lack of high-resolution structural data in the vicinity of its active site. In this study, we obtained the complete high-resolution model of tTG by in silico methods based on available PDB structures.

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Objective: To develop a highly informative method for predicting the course of early postoperative period in urgent abdominal surgery based on indicators of lipid metabolism.

Material And Methods: We analyzed 113 patients with acute surgical abdominal disease including 56 (49.6%) ones with acute appendicitis complicated by peritonitis, 23 (20.

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Article Synopsis
  • Ankylosing spondylitis (AS) is a chronic inflammatory disease affecting the spine, and adalimumab, a TNF inhibitor, shows promise as a treatment option.
  • A systematic review analyzed 14 randomized controlled trials with 4,500 participants, comparing adalimumab to placebo and other treatments.
  • Results indicate that adalimumab effectively reduces disease activity and improves physical function without a significant increase in adverse effects, highlighting the need for further studies on its long-term efficacy and safety.
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Microbial rhodopsin (MRs) ion channels and pumps have become invaluable optogenetic tools for neuroscience as well as biomedical applications. Recently, MR-optogenetics expanded towards subcellular organelles opening principally new opportunities in optogenetic control of intracellular metabolism and signaling precise manipulations of organelle ion gradients using light. This new optogenetic field expands the opportunities for basic and medical studies of cancer, cardiovascular, and metabolic disorders, providing more detailed and accurate control of cell physiology.

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Objective: Based on objective criteria of the structural and functional state of the kidneys in various urgent surgical and uronephrological pathologies (peritonitis, pancreonecrosis, intestinal obstruction, urinary peritonitis, acute purulent secondary pyelonephritis) to identify and prove the general pattern of development of renal changes, their influence on the pathogenesis of homeostasis disorders at the organizational level and to form the evidence base of a new symptom complex - renal distress syndrome in surgery and uronephrology; to establish the effectiveness of Remaxol in its correction.

Material And Methods: Experimentally on 60 mongrel dogs with acute peritonitis, pancreatitis, intestinal obstruction of varying severity, the state of renal function, including detoxification, was assessed based on the assessment of the inflow-outflow difference in the level of toxins and in the parenchyma of organs - the composition of lipids, the activity of peroxidation of membrane lipids and phospholipases. Clinical and laboratory studies included patients with acute peritonitis (48), acute pancreatitis (18), intestinal obstruction (21), acute purulent secondary pyelonephritis (19).

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Thick smoothly graded AlGaAs layers (50-100 µm) are used in light-emitting diode structures and also for creation of high-power photovoltaic converters with side-input of laser radiation. To achieve the required thickness of the AlGaAs layer the high temperature LPE growth technique is required. However high epitaxial temperature increases the unintentional doping level.

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Chronic liver diseases are worldwide on the rise. Due to the rapidly increasing incidence, in particular in Western countries, metabolic dysfunction-associated steatotic liver disease (MASLD) is gaining importance as the disease can develop into hepatocellular carcinoma. Lipid accumulation in hepatocytes has been identified as the characteristic structural change in MASLD development, but molecular mechanisms responsible for disease progression remained unresolved.

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Understanding the distribution and biodiversity of marine species is crucial for developing effective conservation strategies and maintaining the health of global ecosystems. Advancements in molecular data utilization have significantly improved our understanding of biodiversity within the genus Terebellides. In this study, we conducted a phylogenetic analysis on polychaete samples from the Kandalaksha Bay, White Sea, revealing their affiliation with a putative undescribed species of the genus Terebellides found in two locations of the North Sea.

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Ferritin is a universal protein complex responsible for iron perception in almost all living organisms and has applications from fundamental biophysics to drug delivery and structure-based immunogen design. Different platforms based on ferritin share similar technological challenges limiting their development - control of self-assembling processes of ferritin itself as well as ferritin-based chimeric recombinant protein complexes. In our research, we studied self-assembly processes of ferritin-based protein complexes under different expression conditions.

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Background: The COVID-19 pandemic has had significant impacts on the child and adolescent population, with long-term consequences for physical health, socio-psychological well-being, and cognitive development, which require further investigation. We herein describe a study design protocol for recognizing neuropsychiatric complications associated with pediatric COVID-19, and for developing effective prevention and treatment strategies grounded on the evidence-based findings.

Methods: The study includes two cohorts, each with 163 participants, aged from 7 to 18 years old, and matched by gender.

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