Publications by authors named "Vasilyeva I"

Despite the fact that many researchers and teachers reported that distance education can be equated with traditional face-to-face form education, the question of analyzing the quality of knowledge gained in distance education is open. This study was conducted on the basis of the Department of Medical Cybernetics and Informatics named after S.A.

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Aim: To evaluate clinical efficacy, anti-inflammatory and immunomodulatory activity of clarithromycin in adults with severe community-acquired pneumonia (sCAP).

Materials And Methods: A prospective observational study recruited adult hospitalized patients with verified sCAP. Clarithromycin was prescribed as a component of combination antibiotic therapy (ABT) with a β-lactam antibiotic (AB).

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Background: The World Health Organization guidelines for management drug resistant tuberculosis include surgery as an additional method in selected cases. Pneumonectomies have higher risk of morbidity such as bronchial fistulas which may be prevented by bronchial stump covering. We compare two methods of bronchial stump reinforcement.

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Introduction: The tuberculin skin test has significant limitations for use in individuals vaccinated with BCG. The presence in the genome of of the RDI region, which is absent in the genome of Mycobacterium bovis BCG and most non-tuberculous mycobacteria, made it possible to develop new skin tests, which include a skin test with a recombinant tuberculosis allergen [RTA (Diaskintest®, JSC Generium, Russia)]. Diaskintest has shown high diagnostic performance in clinical trials and in conditions of high prevalence of tuberculosis infection.

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The emergence of drug resistant (MTB) strains has become a global public health problem, while, at the same time, there has been development of new antimicrobial agents. The main goals of this study were to determine new variants associated with drug resistance in MTB and to observe which polymorphisms emerge in MTB genomes after anti-tuberculosis treatment. We performed whole-genome sequencing of 152 MTB isolates including 70 isolates as 32 series of pre- and post-treatment MTB.

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At the moment, there are many decision rules and mathematical models that reduce the risk of postoperative mortality and complications. A small part of such medical mathematical models (scales) is successfully used in practice, but there is also a part that eventually remains on the shelves and becomes morally obsolete. The purpose of this work is to evaluate the discrimination ability of the prognostic model underlying the decision rule that allows ranking patients into groups with favorable and unfavorable outcomes and into a group of patients subject to preoperative preparation to maintain the performance of the mathematical model Oncoprognosis 1.

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The aim of the work was to determine the concentration of low-molecular-weight plasma DNA (lmDNA) in patients with COPD and chronic non-obstructive bronchitis (CnonB) of two age groups - 34-59 and 60-80 years. The levels of lmDNA in healthy donors, patients with CnonB, healthy relatives of patients with COPD did not differ, while the concentration of lmDNA in patients with COPD was significantly lower. In COPD patients aged 34-59 years, the level of lmDNA was reduced by more than 7 times, and in COPD patients who survived to 60-80 years, it was 3 times lower compared to the value of this biochemical indicator in healthy donors of the same age.

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Background: High burden of drug-resistant (DR) tuberculosis (TB) is a significant threat to national TB control programs all over the world and in the Russian Federation. Different Mycobacterium tuberculosis (MTB) genotypes are hypothesized to have specific characteristics affecting TB control programs. For example, Beijing strains are supposed to have higher mutation rates compared to strains of other genotypes and subsequently higher capability to develop drug-resistance.

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Background: Data on patients with COVID-19 who have pulmonary tuberculosis (TB) are limited. In this study, we compared the clinical characteristics of patients with COVID-19/TB and patients with COVID-19 only. In addition, we analyzed the links between the severity of COVID-19 disease and the clinical characteristics of patients with COVID-19/TB.

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Article Synopsis
  • A study involving 5,340 residents of Moscow investigated the relationship between immune responses (antibodies and T cells) to SARS-CoV-2 and the likelihood of COVID-19 infection.* -
  • Results showed that individuals with both high T-cell and antibody responses had the lowest risk of infection, while those with only an antibody response also had a strong protective effect.* -
  • The findings highlight that antibody responses are more crucial for protection against SARS-CoV-2 compared to T-cell responses, suggesting potential implications for public health policies related to COVID-19.*
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Unlabelled: was to determine the molecular genetic prognostic criteria for the severity of the course pneumonia based on the analysis of the association of genetic polymorphism in toll-like receptors with the severity of NETosis.

Materials And Methods: The study included 38 patients with the main diagnosis of community-acquired pneumonia with a severe course. All the patients underwent standard clinical laboratory examinations, computed tomography of the thoracic organs, microbiological examination of blood and tracheobronchial aspirate.

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Article Synopsis
  • The study investigates the virulence of two clinical strains of the Beijing genotype associated with drug-resistant tuberculosis in C57BL/6 mice, highlighting their correlation to global health issues.
  • Strains 267/47 (pre-XDR) and 120/26 (MDR) showed differing survival rates in infected mice, with 10% and 40% survival, respectively, compared to 70% for the H37Rv strain.
  • Comparison of immune responses revealed significant differences in cytokine gene expression, particularly with downregulated pro-inflammatory and anti-inflammatory genes in mice infected with the more virulent strain 267/47.
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Introduction: To evaluate Low-Molecular-weight (LMW) DNA as a possible prognostic biomarker in acute ischemic and hemorrhagic stroke.

Methods: LMW DNA samples were isolated from plasma and cerebrospinal fluid by phenol deproteinization, analyzed by gradient polyacrylamide electrophoresis and quantified by spectrophotometry.

Results: Two common types of stroke, i.

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Infectious diseases are a global health problem affecting billions of people. Developing rapid and sensitive diagnostic tools is key for successful patient management and curbing disease spread. Currently available diagnostics are very specific and sensitive but time-consuming and require expensive laboratory settings and well-trained personnel; thus, they are not available in resource-limited areas, for the purposes of large-scale screenings and in case of outbreaks and epidemics.

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Aims: The aim of the experiments was to find out the factors on which age-related sensitivity to the occurrence of BPH depends.

Methods: 45 Male Wistar rats aged 3 and 24 months were used. In each age group, there were intact rats and animals with induced BPH (by surgical castration + testosterone injections, 25 mg/kg x 7).

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Treatment outcomes for Multidrug/Rifampicin-Resistant Tuberculosis (MDR/RR-TB) and Extensively Drug-Resistant Tuberculosis (XDR-TB) remain poor across the globe and in the Russian Federation. Treatment of XDR-TB is challenging for programmes and patients often resulting in low success rates and onward transmission of drug-resistant strains. Analysis of factors affecting culture conversion rate among XDR-TB patients may serve as a basis for optimization of treatment regimens.

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Today, Fs defects in MgO as isolated surface neutral oxygen vacancies are in the focus of surface science, catalysis research, and emission coating of microchannel plates. With the 10 atom % content at 750 K and under = 10 Torr, estimated by us from the known equilibrium - and -- diagrams of MgO, Fs defects remain invisible or difficult-to-detect objects. The MgO(100) → MgO(100) + Fs + /O phase transition was studied in MgO films deposited by the metal-organic chemical vapor deposition (MOCVD) procedure from the mixed-ligand Mg precursor on Si substrates at 725 K in the O flow where the nonstoichiometric phase (MgO/Fs) is formed in the gas medium containing simultaneous H, CO, HO, CO, and O species in unbalanced concentrations.

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Background: The main advantage of GeneXpert MTB/RIF® (Xpert) molecular diagnostic technology is the rapid detection of M.tuberculosis DNA and mutations associated with rifampicin (RIF) resistance for timely initiation of appropriate treatment and, consequently, preventing further transmission of the disease. We assessed time to treatment initiation and treatment outcomes of RIF-resistant and RIF-susceptible TB patients diagnosed and treated in Vladimir TB Dispensary, Russia in 2012, before and after implementation of GeneXpert MTB/RIF® diagnostic technology.

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The aim of the present study was a comparison of prognostic accuracy assessment results for scores in different ways on the example of validity analysis of the prognostic model ISS-RTS-TRISS for assessing the severity of the condition in children with trauma. The prospective study was conducted using clinical and physiological data collected at the admission and during the first 24 hours of hospitalization from 414 children with trauma. We had three groups of patients, common group children with traumatic brain injuries, and two groups of patients were divided into the two following ways: 141 (34%) patients with isolated traumatic brain injuries and 273 (66%) patients with combined injuries with traumatic brain injuries The validity and prognostic accuracy of prognostic scores were assessed by determining there discrimination and calibration ability.

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Background: The five BRICS (Brazil, Russian, Indian, China, and South Africa) countries bear 49% of the world's tuberculosis (TB) burden and they are committed to ending tuberculosis.

Objectives: The aim of this paper is to map the scientific landscape related to TB research in BRICS countries.

Methods: Were combined bibliometrics and social network analysis techniques to map the scientific publications related to TB produced by the BRICS.

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Background: After the breakup of the Soviet Union, the annual incidence of tuberculosis (TB) in children 15-17 years of age increased in the Russian Federation from 16 per 100 000 population in 1992 to 37 per 100 000 in 2009, and new control measures were implemented.

Methods: Children were screened annually for TB exposure with a tuberculin skin test (TST) at age 1-8 years. If positive, they were investigated for active TB.

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Background: There is some evidence that Benign Prostatic Hyperplasia (BPH) may increase the risk of developing prostate cancer, so conducting research on effective BPH inhibitors is important.

Objective: This research studied the inhibitory effect of Iodized Serum Milk Protein (ISMP) on BPH in rats. ISMP is a concentrate of lactic protein containing 2.

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The purpose of this work was to study changes in the level of cell-free DNA (cfDNA) in the blood of young and old rats in the normal state and with induced benign prostatic hyperplasia (BPH). Male Wistar rats were divided into 4 groups-young (3 months), old (20 months), intact, or with testosterone-induced BPH. Groups with BPH were subjected to surgical castration and administration of testosterone esters at a dose of 25 mg/kg for a total of 7 injections for 20 days.

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