Gigiena i sanitariiaPub Date : 2023-07-28DOI: 10.47470/0016-9900-2023-102-6-538-543
S. Perov, O. Belaya
{"title":"Electromagnetic environment created by mobile communication base stations in the 5G pilot area","authors":"S. Perov, O. Belaya","doi":"10.47470/0016-9900-2023-102-6-538-543","DOIUrl":"https://doi.org/10.47470/0016-9900-2023-102-6-538-543","url":null,"abstract":"Introduction. In the context of 5G system integration for general public, the change of electromagnetic field background is expected. The electromagnetic field background will change in spectral composition, spatial and temporal distribution, which affects the methodological approaches of instrumental control and hygienic assessment. \u0000Materials and methods. In the 5G pilot area the frequency-selective, code-selective and broadband measurements were carried out for the actual and possible electromagnetic field assessment from GSM, UMTS, LTE and 5G/IMT-2020 base station at several points. \u0000Results. The research results have shown that the actual electromagnetic levels did not exceed 1.5 μW/cm2, the main part of actual (measured) level includes GSM and LTE base stations (1800 MHz). At some points, the main part of maximum possible electromagnetic field exposure did not exceed 8.5 μW/cm2 and created by the 5G/IMT-2020 traffic transmission beam from base station to the subscriber terminal. \u0000Limitations. The limitation of study is determined by the measurement conditions of 5G/IMT-2020 test operation modes in the pilot area, it is difficult to assess the actual EMF exposure from commercial networks user service. \u0000Conclusion. In the intensive progress of mobile communication, the frequency- and code-selective measuring instruments are necessary to improve approaches for instrumental control and evaluation for electromagnetic fields from various mobile communication, especially for 5G assessment.","PeriodicalId":12550,"journal":{"name":"Gigiena i sanitariia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46451222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gigiena i sanitariiaPub Date : 2023-06-20DOI: 10.47470/0016-9900-2023-102-5-466-473
A. Z. Fagamova, L. Karimova, V. Kaptsov, Z. F. Gimaeva, N. Muldasheva, I. V. Shapoval
{"title":"Stress at the workplace as a trigger for mental disorders and somatic diseases (literature review)","authors":"A. Z. Fagamova, L. Karimova, V. Kaptsov, Z. F. Gimaeva, N. Muldasheva, I. V. Shapoval","doi":"10.47470/0016-9900-2023-102-5-466-473","DOIUrl":"https://doi.org/10.47470/0016-9900-2023-102-5-466-473","url":null,"abstract":"Working environment psychosocial factors gain the increasing importance for occupational health so far. Based on literature, this review presents an analysis of available studies about relation between stress at the workplace and development or progression of both mental and somatic diseases. The Web of Science, Scopus, MedLine, RSCI, CyberLeninka databases were used to prepare the review. The results of studies have shown pathogenesis and circumstances of the development of various occupational diseases (cardiovascular, nervous, digestive, respiratory, musculoskeletal systems, cancer of various locaion), which can be affected by occupational stress. Workplace stress also has a significant impact on the central nervous system, including sleep, various mental disorders. \u0000The number of people suffering from bad habits increases due to workplace stress as well. Furthermore, the main directions of preventive measures to reduce the level of industrial stress are given.","PeriodicalId":12550,"journal":{"name":"Gigiena i sanitariia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42864176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gigiena i sanitariiaPub Date : 2023-06-20DOI: 10.47470/0016-9900-2023-102-5-421-425
I. Alikina, O. Dolgikh
{"title":"Features of the cytokine profile under its modification with technogenic factors in conditions of experiment in vitro (on the example of benz(a)pyrene and SARS-CoV-2 vaccine antigen)","authors":"I. Alikina, O. Dolgikh","doi":"10.47470/0016-9900-2023-102-5-421-425","DOIUrl":"https://doi.org/10.47470/0016-9900-2023-102-5-421-425","url":null,"abstract":"Introduction. The immune system plays the key role in the formation of adaptive responses and is the most sensitive to environmental exposures. An immune response under exposure to viruses or other factors is induced by toll-like receptors stimulating production of pro-inflammatory cytokines. Simultaneous exposure to exogenous chemical pollutants in ambient air modifies the adaptation process. \u0000Materials and methods. An in vitro experiment was accomplished on samples of peripheral blood. The study focused on a mixed population of immune-competent cells (n=64 samples). Effects produced by exogenous factors (benz(a)pyrene, SARS-CoV-2) and managing elements (interleukin-1β, cortisol) were considered influencing factors. All the lymphocyte cultures were incubated for 72 hours; after that, the quantitative content of cytokines in the samples was determined by the ELISA tests. \u0000Results. The inhibition of cytokines was experimentally demonstrated when the SARS-CoV-2 vaccine antigen was introduced into cell culture in combination with cortisol and an immunomodulator (IL-6, IL-10), and a significant decrease in the level of INF-gamma in samples with the addition of IL-1β was also noted. Benz(a)pyrene exerted a catalytic effect on the cytokine-producing function of immunocompetent cells with an increase in the production of IL-6 and IFN-gamma relative to spontaneous production. Suppression of cytokines (IL-6, IFN-gamma, and IL-10) was observed in samples containing vaccine antigens SARS-CoV-2, compared with the spontaneous level, which suggests the formation of possible mechanisms of post-vaccination complications. \u0000Limitations. The study has no limitations associated with the use of the selected methods or characteristics of the research objects. \u0000Conclusions. Experimental modelling in vitro made it possible to estimate the additive effects of the mixed action of benz(a)pyrene and SARS-CoV-2 (vaccine antigen) on protein molecules and hyperproduction of inflammatory modulators was evaluated. The study aimed to facilitate investigation of the examined mechanism and development of relevant programs for preventing risks of negative effects produced on health by chemical and biological factors.","PeriodicalId":12550,"journal":{"name":"Gigiena i sanitariia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48263373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gigiena i sanitariiaPub Date : 2023-06-20DOI: 10.47470/0016-9900-2023-102-5-502-508
M. Zemlyanova, N. Zaitseva, M. Stepankov
{"title":"Peculiarities of toxic effects produced by aluminum oxide nano- and microparticles under multiple inhalation exposure","authors":"M. Zemlyanova, N. Zaitseva, M. Stepankov","doi":"10.47470/0016-9900-2023-102-5-502-508","DOIUrl":"https://doi.org/10.47470/0016-9900-2023-102-5-502-508","url":null,"abstract":"Introduction. Aluminum oxide nanoparticles (Al2O3 NPs) are widely used in nanotechnologies employed in various branches including chemical, food, and medical industry and perfume and cosmetics production. This high demand for Al2O3 NPs, given the wide-scale development of nanoindustries, can, in its turn, lead to ambient air pollution that creates public health risks under long-term exposure to it. Given that, it seems relevant to perform profound investigation with its focus on pathogenetic features of toxic effects produced by these nanoparticles and comparatively analyze them with effects produced by a micro-sized chemical analog under inhalation exposure to introduce more effective prevention. \u0000Materials and methods. We examined chemical properties of Al2O3, nano- and microparticles (MPs) in an experiment on Wistar rats, comparatively analyzed the results and described pathogenetic features of toxic effects produced by the examined particles under multiple inhalation exposure. \u0000Results. The examined samples were a nanomaterial judging by such parameters as particle size, shape, surface area, and total pore volume. They differed substantially from their micro-sized analog. Exposure to Al2O3 NPs causes more pronounced changes in the behaviour of rats relative to MPs. Under exposure to Al2O3 NPs, aluminum concentrations were statistically significantly by 1.62–55.2 times higher in the lungs, liver, brain and blood. The concentration of the examined elements was by 1.55–7.65 times higher in these organs as compared to exposure to the micro-sized particles. Exposure to Al2O3 NPs induced changes in biochemical indicators of negative effects against the control (exposure to micro-sized particles). We established higher activity of ALT, AST, AP, LDH, and elevated levels of direct bilirubin, GABA, glutamine acid, and MDA against the same indicators in the control group. Pathomorphological changes were identified in the lungs, brain, heart, and liver under exposure to Al2O3 NPs whereas exposure to the micro-sized analog induced such changes only in the lungs. Exposure to NPs induced more apparent changes in tissue structures in many organs. \u0000Limitations. The study involved only multiple inhalation exposure to Al2O3 NPs and MPs in an experiment on Wistar rats. \u0000Conclusion. Al2O3 NPs are more toxic than their micro-sized chemical analog; this is evidenced by a greater number of organs where bioaccumulation occurs, more apparent pathomorphological changes and pathological functional disorders. The study results should be considered when developing hygienic recommendations aimed at preventing and minimizing negative effects produced by Al2O3 NPs on human health.","PeriodicalId":12550,"journal":{"name":"Gigiena i sanitariia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48904054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gigiena i sanitariiaPub Date : 2023-06-20DOI: 10.47470/0016-9900-2023-102-5-439-444
S. V. Raikova, S. Mazilov, Nataliia E. Komleva, N. S. Kuznetsov, E. V. Bobyleva
{"title":"Analysis of risk factors for the formation of functional disorders \u0000of the respiratory system in metalworking employees","authors":"S. V. Raikova, S. Mazilov, Nataliia E. Komleva, N. S. Kuznetsov, E. V. Bobyleva","doi":"10.47470/0016-9900-2023-102-5-439-444","DOIUrl":"https://doi.org/10.47470/0016-9900-2023-102-5-439-444","url":null,"abstract":"Introduction. Employees of the main occupations of metalworking production are exposed to a complex of harmful production and non-production factors contributing to the formation of bronchopulmonary pathology. The identification of priority factors leading to the development of diseases of the respiratory system is important in order to develop methods of effective prevention of bronchopulmonary diseases in employees of the metalworking industry. \u0000Materials and methods. As part of the cross-sectional study, the medical and social aspects and the health status of three hundred metalworking employees were studied. A hygienic assessment of the factors of the working environment and the labour process was carried out. The results of the study were statistically processed using the Statistica 10 software. \u0000Results. There was a discrepancy in the number of workers with an established diagnosis of bronchopulmonary disease and the number of workers complaining from the respiratory system and having physical and spirometric disorders. Workers were established to be exposed to a complex of harmful chemicals of hazard classes 1–4, having an irritating, carcinogenic, sharply directed mechanism of action on the human body (classes 2–3.2) and aerosols of predominantly fibrogenic action (class 2). The harmful chemical factor affecting metalworking employees did not have a significant effect on the formation of functional disorders of the respiratory system. The priority risk factor for the development of bronchopulmonary pathology in metalworking employees is the use of tobacco smoking products. \u0000Limitations. The study has regional (Saratov region) and occupational (metalworking employees) limitations. \u0000Conclusion. The priority risk factor for the development of bronchopulmonary pathology is the use of smoking tobacco products, and the impact of a harmful chemical factor that had an insignificant effect on the formation of functional disorders of the respiratory system of metalworking employees.","PeriodicalId":12550,"journal":{"name":"Gigiena i sanitariia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43509675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}