Опыт создания полнотекстовой базы данных «МедЛиб» в научно-медицинской библиотеке Сибирского государственного медицинского университета

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Ассоциация полиморфных вариантов генов цитокинов (TNF и IL8) с развитием хронической обструктивной болезни легких

The association of the tumor necrosis TNF-α –308G/A polymorphism and interleukin-8 genetic IL8 –251А/Т polymorphism with the development of the chronic obstructive lung disease (COLD) in two Tomsk populations (Siberian Tatars and Russians) has been studied. The data on interethnic differences in the structure of COLD susceptibility have been obtained. In Siberian Tatars, the TNF –308G allelic variant plays a role in the COLD development. In Russians, no association of the studied genetic markers with COLD was reveled.Исследована ассоциация полиморфизма –308G/A гена фактора некроза опухолей α (TNF) и полиморфизма –251А/Т гена IL8 с развитием хронической обструктивной болезни легких (ХОБЛ) в двух популяциях г. Томска (сибирские татары и русские). Получены данные о межэтнических различиях в структуре предрасположенности к ХОБЛ. У сибирских татар в развитии заболевания играет роль аллельный вариант –308G/A гена TNF. У русских не показано ассоциации изученных генетических маркеров с ХОБЛ

Анализ взаимосвязи полиморфизмов генов TNF и IL8 с формированием клинических особенностей хронической обструктивной болезни легких

The correlation of the 308G/A polymorphism of α TNF (tumor necrosis factor) gene and 251А/Т polymorphism of 8 IL8 (interleukin 8) gene with clinical peculiarities of the course of chronic obstructive lung disease (COLD) in Siberian Tatars and Russians has been studied. Associations of these genetic markers with quantitative indices pathogenetically significant in the COLD formation (biochemical and immunological indices of blood serum and sputum) have been analyzed.The analysis of associations of polymorphous versions of TNF and IL8 genes with biochemical and immunological indices of blood serum and sputum has revealed the presence of interethnic peculiarities in the regulation of the level of proinflammatory and protective mechanisms participating in the formation of chronic inflammation at COLD.Изучена взаимосвязь полиморфизма –308G/A гена фактора некроза опухолей α (TNF) и полиморфизма –251А/Т гена интерлейкина-8 (IL8) с клиническими особенностями течения хронической обструктивной болезни легких (ХОБЛ) у сибирских татар и русских. Проведен анализ ассоциаций данных генетических маркеров с количественными признаками, патогенетически значимыми в формировании ХОБЛ (биохимическими и иммунологическими показателями сыворотки крови и мокроты).При анализе ассоциаций полиморфных вариантов генов TNF и IL8 с биохимическими и иммунологическими показателями сыворотки крови и мокроты установлено наличие межэтнических особенностей в регуляции уровня провоспалительных и защитных механизмов, играющих роль в формировании хронического воспаления при ХОБЛ

Экзогенные и эндогенные факторы в формировании хронической обструктивной болезни легких

To determine the role of exogenic and endogenic factors in chronic obstructive pulmonary disease (COPD) forming 100 patients (50 patients are control group) were examined by means of clinical and genealogical researches, including family tree composition with analisis of 3—4 generations, genotyping on the most wide-spread α1-proteinase inhibitor (α1-PI) gene alleles (M, S, Z), definition of the α1-PI level in the serum. The role of exogenic factors (smoking, pollutants) have been confirmed in COPD forming, while primery α1-PI deficiency have been revealed only in 6% COPD patients. Therefore, further investigations of other genetic alleles in COPD patients are necessary.Для определения роли эндогенных и экзогенных факторов в формировании хронической обструктивной болезни легких (ХОБЛ) у 100 пациентов (50 — группа сравнения) проведено клинико-генеалогическое обследование, включающее составление родословных с анализом 3—4 поколений, генотипирование на наиболее распространенные аллели гена α1-протеиназного ингибитора (α1-ПИ) (M, S, Z), определение уровня α1-ПИ в сыворотке крови. В формировании ХОБЛ подтверждена роль экзогенных факторов (курение, поллютанты), в то время как первичный дефицит α1-ПИ имел место только у 6% больных ХОБЛ. Таким образом, необходимо дальнейшее изучение других генетических локусов у больных ХОБЛ

Search for directional associations between Baikal Gigaton Volume Detector neutrino-induced cascades and high-energy astrophysical sources

Baikal-GVD has recently published its first measurement of the diffuse astrophysical neutrino flux, performed using high-energy cascade-like events. We further explore the Baikal-GVD cascade dataset collected in 2018-2022, with the aim to identify possible associations between the Baikal-GVD neutrinos and known astrophysical sources. We leverage the relatively high angular resolution of the Baikal-GVD neutrino telescope (2-3 deg.), made possible by the use of liquid water as the detection medium, enabling the study of astrophysical point sources even with cascade events. We estimate the telescope's sensitivity in the cascade channel for high-energy astrophysical sources and refine our analysis prescriptions using Monte-Carlo simulations. We primarily focus on cascades with energies exceeding 100 TeV, which we employ to search for correlation with radio-bright blazars. Although the currently limited neutrino sample size provides no statistically significant effects, our analysis suggests a number of possible associations with both extragalactic and Galactic sources. Specifically, we present an analysis of an observed triplet of neutrino candidate events in the Galactic plane, focusing on its potential connection with certain Galactic sources, and discuss the coincidence of cascades with several bright and flaring blazars.Comment: 10 pages, 3 figure

Large neutrino telescope Baikal-GVD: recent status

The Baikal-GVD is a deep-underwater neutrino telescope being constructed in Lake Baikal. After the winter 2023 deployment campaign the detector consists of 3456 optical modules installed on 96 vertical strings. The status of the detector and progress in data analysis are discussed in present report. The Baikal-GVD data collected in 2018-2022 indicate the presence of cosmic neutrino flux in high-energy cascade events consistent with observations by the IceCube neutrino telescope. Analysis of track-like events results in identification of first high-energy muon neutrino candidates. These and other results from 2018-2022 data samples are reviewed in this report

Studies of the ambient light of deep Baikal waters with Baikal-GVD

The Baikal-GVD neutrino detector is a deep-underwater neutrino telescope under construction and recently after the winter 2023 deployment it consists of 3456 optical modules attached on 96 vertical strings. This 3-dimensional array of photo-sensors allows to observe ambient light in the vicinity of the Baikal-GVD telescope that is associated mostly with water luminescence. Results on time and space variations of the luminescent activity are reviewed based on data collected in 2018-2022

Monitoring of optical properties of deep waters of Lake Baikal in 2021-2022

We present the results of the two-year (2021-2022) monitoring of absorption and scattering lengths of light with wavelength 400-620 nm within the effective volume of the deep underwater neutrino telescope Baikal-GVD, which were measured by a device Baikal-5D No.2. The Baikal-5D No.2. was installed during the 2021 winter expedition at a depth of 1180 m. The absorption and scattering lengths were measured every week in 9 spectral points. The device Baikal-5D No.2 also has the ability to measure detailed scattering and absorption spectra. The data obtained make it possible to estimate the range of changes in the absorption and scattering lengths over a sufficiently long period of time and to investigate the relationship between the processes of changes in absorption and scattering. An analysis was made of changes in absorption and scattering spectra for the period 2021-2022