СОСТОЯНИЕ СТЕНКИ АБДОМИНАЛЬНОГО ОТДЕЛА ПИЩЕВОДА ПРИ ЕГО ОПУХОЛЕВОМ ПОРАЖЕНИИ

In the article features morphological changes in the wall of the abdominal part of esophagus are described at two forms of its tumoral leasions: the squamous cell carcinoma and adenocarcinoma.В статье описаны особенности морфологических изменений в стенке абдоминального отдела пищевода при двух формах его опухолевого поражения: плоско- клеточном раке и аденокарциноме.

Graduated return to play guidance following COVID-19 infection

The COVID­19 pandemic has affected all inhabitants of the planet, of all ages and professions, including professional athletes. In connection with the resumption of various sports events, it became necessary to create criteria for admitting an athlete to the training and competitive process. In the British Journal of Sports Medicine (BJSM) on February 08, 2021 the authors Niall Elliott, Rhodri Martin, Neil Heron, Jonathan Elliott, Dan Grimstead and Anita Biswas published an infographic of the stages of returning to sports activity after suffering COVID­19. An adapted translation was made by a team of authors and provided in the form of a short message for publication

Influence of Thermal Stabilization for Accuracy Optical Measurements Based on the Phenomenon of Surface Plasmon Resonance

Розглянуто механізми впливу температури на результати оптичних вимірювань, які базуються на явищі поверхневого плазмонного резонансу. З’ясовано, що похибка результату вимірювання зумовлена впливом тем-ператури на показник заломлення досліджуваних речовин та елементи оптичної схеми вимірювального облад-нання. Експериментально продемонстровано вплив термостабілізації вимірювального обладнання на відхилен-ня результату оптичних вимірювань. ; We considered the mechanisms of the effect of temperature on the results of optical measurements ba sed on the phenomenon of surface plasmon resonance. It is found that the error of the measurement results due to the influence of temperature on the refractive index of the test substances and the elements of the optical scheme of measuring equipment. Experimental demonstrate the influence of thermal stabilization of the measuring equipment to reject the results of optical measurements

Features of baseline and lipopolysaccharide-induced cytokine secretion in mononuclear leukocyte cultures from patients with the erythema migrans form of acute lyme borreliosis based on clinical parameters

Introduction. Features of cytokine production in mononuclear cell cultures from Lyme borreliosis patients based on clinical data remained poorly studied. The study aim was to estimate the patterns of baseline and lipopolysaccharide-induced cytokine-secretory activity of peripheral blood mononuclear leukocytes from patients with erythema migrans form of acute Lyme borreliosis based on clinical parameters. Materials and methods. Groups of 22 and 12 patients with the diagnoses of mild or moderate severity of monoinfection and co-infection with tick-borne encephalitis of Lyme borreliosis with erythema migrans were examined twice: on week 1 after disease onset and day 14. The control group included 17 healthy donors. Basal and lipopolysaccharide-induced IL-6, IL-10, and TNFα secretion levels were assessed in mononuclear leukocyte culture supernatants applying enzyme immunoassay. Statistical analysis was performed by using the Mann–Whitney U-test, Wilcoxon test, and Spearman’s rank correlation. Results. The group of moderate severity patients was clinically distinguished by severer fever and intoxication manifestations. At the disease onset, the basal TNFα, IL-6 and IL-10 secretion levels in the moderate severity patient cultures were significantly higher than in those of the other groups. After antibiotics treatment, the baseline TNFα and IL-10 levels tended to decrease. At the onset, lipopolysaccharide-induced cultures from the moderate severity patients showed significantly suppressed TNFα production and increased IL-10 secretion as compared to the other groups. Lipopolysaccharide-induced IL-6 secretion in the moderate vs. mild severity group supernatants was significantly lower. In dynamics, the induced TNFα levels in the moderate severity patients were increased to the magnitude exceeding that in the controls. Positive correlations between the IL-6 and TNFα basal levels and maximum body temperature or the C-reactive protein serum concentrations were revealed in the patients. Induced TNFα levels showed negative correlations with fever levels or with IL-10 secretion. Conclusions. It was demonstrated that basal TNFα, IL-6 and IL-10 secretion levels in the mononuclear cell cultures of acute Lyme borreliosis patients increased with the increasing disease severity. Suppression of lipopolysaccharide-induced TNFα production in the moderate severity patient cultures was presumably associated with the regulatory cytokine IL-10 effects

Development of technical and design skills of schoolchildren

Paper issues the possibility of using the project method for development of technical and design skills of junior schoolchildrenРассматривается применение метода проектов для развития технико-конструкторских умений младших школьнико

Hardware-software system for measuring thermophysical properties of materials (temperature diffusivity, relative thermal capacity, electrical resistance) in wide temperature range (300-2000 K)

Paper describes automated system of measuring units that are a part of experimental complex for measuring thermophysical properties and electric resistance of materialsДанная работа описывает систему автоматизации установок, входящих в экспериментальный комплекс по исследованию теплофизических свойств и электрического сопротивления материало

Синдром Такоцубо у пациентки со злокачественным новообразованием почки

RELEVANCE. The increasing availability of invasive methods for assessing the coronary vessels contributes to the growth in the diagnosis of myocardial damage in intact coronary arteries. One of the least studied diseases that mimic the course of myocardial infarction is Takotsubo syndrome, which quite often remains undiagnosed in real clinical practice. The medical and economic significance of this disease is determined by the high risk of developing life-threatening complications and the need to provide emergency specialized medical care.AIM OF STUDY. The paper presents an analytical review of scientific medical literature from the perspective of illustrating modern concepts of the most common risk factors, etiopathogenesis, diagnosis and treatment of Takotsubo syndrome. A clinical observation of a patient with verified secondary Takotsubo syndrome against a malignant neoplasm of the kidney is also presented.CONCLUSIONS. For a detailed understanding of the potential mechanisms for the development of Takotsubo syndrome, determining the most informative methods for its diagnosis, developing effective strategies for providing medical care and criteria for long-term prognosis, further large-scale studies are needed. Raising the level of awareness of doctors about Takotsubo syndrome, in turn, will allow timely detection of this disease, which will improve the prognosis for patients and minimize the economic costs of treatment. The exclusion of the possibility of overdiagnosis will also help determine the true prevalence of this disease.АКТУАЛЬНОСТЬ. Возрастающая доступность инвазивных методик оценки коронарного русла способствует увеличению случаев диагностики повреждений миокарда при интактных коронарных артериях. Одним из наименее изученных заболеваний, имитирующих течение инфаркта миокарда, является синдром Такоцубо (СТ), который в реальной клинической практике довольно часто остается недиагностированным. Медико-экономическое значение данного заболевания определяется высоким риском развития жизнеугрожающих осложнений и необходимостью оказания экстренной специализированной медицинской помощи.ЦЕЛЬ ИССЛЕДОВАНИЯ. В работе представлен аналитический обзор научной медицинской литературы с позиций иллюстрации современных представлений о наиболее распространенных факторах риска, этиопатогенезе, диагностике и лечении СТ. Также приведено клиническое наблюдение пациентки с верифицированным вторичным СТ на фоне злокачественного новообразования почки.ВЫВОДЫ. Для детального понимания потенциальных механизмов развития СТ, определения наиболее информативных методов его диагностики, разработки эффективных стратегий оказания медицинской помощи и критериев отдаленного прогноза необходимы дальнейшие масштабные исследования. Повышение уровня информированности врачей о СТ, в свою очередь, позволит своевременно выявлять данное заболевание, что улучшит прогноз для пациентов и позволит минимизировать экономические затраты на лечение. Исключение возможности гипердиагностики также будет способствовать определению истинной распространенности данного заболевания

Production properties of K*(892) vector mesons and their spin alignment as measured in the NOMAD experiment

First measurements of K*(892) mesons production properties and their spin alignment in nu_mu charged current (CC) and neutral current (NC) interactions are presented. The analysis of the full data sample of the NOMAD experiment is performed in different kinematic regions. For K*+ and K*- mesons produced in nu_mu CC interactions and decaying into K0 pi+/- we have found the following yields per event: (2.6 +/- 0.2 (stat.) +/- 0.2 (syst.))% and (1.6 +/- 0.1 (stat.) +/- 0.1 (syst.))% respectively, while for the K*+ and K*- mesons produced in nu NC interactions the corresponding yields per event are: (2.5 +/- 0.3 (stat.) +/- 0.3 (syst.))% and (1.0 +/- 0.3 (stat.) +/- 0.2 (syst.))%. The results obtained for the rho00 parameter, 0.40 +/- 0.06 (stat) +/- 0.03 (syst) and 0.28 +/- 0.07 (stat) +/- 0.03 (syst) for K*+ and K*- produced in nu_mu CC interactions, are compared to theoretical predictions tuned on LEP measurements in e+e- annihilation at the Z0 pole. For K*+ mesons produced in nu NC interactions the measured rho00 parameter is 0.66 +/- 0.10 (stat) +/- 0.05 (syst).Comment: 20 p