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[Lyudmila Antoninovna Shangina as the scientist and pedagogue]. PROBLEMY SOTSIAL'NOI GIGIENY, ZDRAVOOKHRANENIIA I ISTORII MEDITSINY 2023; 31:1472-1476. [PMID: 38142354 DOI: 10.32687/0869-866x-2023-31-6-1472-1476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 05/30/2023] [Indexed: 12/25/2023]
Abstract
The article is devoted to scientific biography of the prominent neuroanatomist, Doctor of Medical Sciences, Professor L. A. Shangina, representative of the scientific school of Tonkov-Bushmakin. Her input into becoming of the chairs of normal anatomy of medical institutes in Irkutsk, Moscow, Kursk, Dushanbe (Tajikistan) and Smolensk and in organization of scientific community of neuromorphologists in the USSR in the middle and second half of the twentieth century is demonstrated. The special attention is paid to the results of scientific studies of L. A. Shangina and her post-graduate students of topography of nerves innervating human heart, of topography of accessory nerve (XI pair of cranial nerves), of structure of receptors of autonomic nervous system in walls of alimentary tract and urinary system.
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[Global demographic problem and active aging (literature review)]. PROBLEMY SOTSIAL'NOI GIGIENY, ZDRAVOOKHRANENIIA I ISTORII MEDITSINY 2023; 31:1109-1114. [PMID: 38069871 DOI: 10.32687/0869-866x-2023-31-s2-1109-1114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 09/05/2023] [Indexed: 12/18/2023]
Abstract
The article presents an overview of foreign sources devoted to the problems of population aging as a significant phenomenon that has become the most important medical and socio-demographic challenge in the world. The review provides global data on this problem and shows the need for elaborating and implementing active aging strategies, optimizing opportunities for health, participation and safety in order to improve the life quality as people age. The paper employs the method of content analysis of scientific publications retrieved in PubMed database by keywords - «aging», «population aging», «demographic trend», «longevity», and «life expectancy». Scientific publications for the period 2018-2023, WHO and UN materials, statistical data, and popular scientific publications have been studied. The purpose of the review was to analyze trends and global nature of aging based on scientific publications and open sources, and to highlight the most promising areas of the demographic policy on the older adults. In the time of rapid demographic changes, it is extremely important to use all available opportunities that maximize healthy aging with the participation of the older adults. We should remember that aging is a natural process and it is better to accept it, both psychologically and physically, rather than ignore. Healthy aging should become and has become the main principle of life, suggesting a longer healthy life of the older adults, who, in turn, should understand how to accept and implement this principle in their lives.
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The adjuvant effect of polymuramil, a NOD1 and NOD2 agonist, differs when immunizing mice of different inbred lines with nonstructural hepatitis C virus (Flaviviridae: Hepacivirus)proteins and is synergistically enhanced in combination with pyrogenalum, a TLR4 agonist. Vopr Virusol 2023; 68:315-326. [PMID: 38156588 DOI: 10.36233/0507-4088-183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Indexed: 12/30/2023]
Abstract
INTRODUCTION Hepatitis C is a liver disease with high chronicity, the cause of cirrhosis and hepatocarcinoma. The main obstacle to controlling hepatitis C is the lack of vaccines. The aim of the work was to compare the immunogenic activity of nonstructural recombinant proteins NS3, NS4 and NS5B of hepatitis C virus (HCV) as components of a subunit candidate vaccine and to analyze the adjuvant properties of two available commercial drugs, polymuramil and pyrogenalum. MATERIALS AND METHODS BALB/c, DBA/2J and C57BL/6 mice were immunized with nonstructural proteins without adjuvants or with polymuramyl (NOD1 and NOD2 agonist) and pyrogenalum (TLR-4 agonist). The activity of antibodies was determined in ELISA, the cellular response - by antigen-specific lymphocyte proliferation and by production of IFN-γ in vitro. RESULTS Recombinant proteins showed different immunogenicity. NS4 induced antibodies more efficiently than NS3 and NS5B. Significant differences were found in the immune response of three inbred lines mice: the level of IFN-γ in BALB/c and DBA/2J mice induced by NS5B protein was 30 times higher than in C57Bl/6 mice. In contrast, the induction of antibodies in BALB/c mice was lower than in C57Bl/6 and DBA/2J. Polymuramil did not increase the humoral response to NS5B and enhanced the cellular response only in C57BL/6 mice. The combined use of polymuramil with pyrogenalum significantly increased both the humoral and cellular response of mice to all recombinant HCV proteins. CONCLUSION Different immunogenic properties and different functions of recombinant non-structural HCV proteins indicate the feasibility of their combined inclusion in subunit vaccines. It was established for the first time that immunization with HCV proteins with a complex adjuvant (polymuramyl + pyrogenalum) has a synergistic effect, significantly exceeding the effect of each of them separately.
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Period-doubling bifurcation in surface radio-frequency trap: Transition to chaos through Feigenbaum scenario. CHAOS (WOODBURY, N.Y.) 2023; 33:093133. [PMID: 37738231 DOI: 10.1063/5.0157397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 09/05/2023] [Indexed: 09/24/2023]
Abstract
We have numerically investigated the dynamics of charged microparticles in a "five-wire" surface radio-frequency trap. The period-doubling bifurcation conditions have been shown to depend on the particle, the trap, and the alternating voltage parameters. For a comprehensive study of the dynamics chaotization through a cascade of period doubling, we have used Fourier analysis of a particle trajectory as well as the calculations of a non-trivial Lyapunov exponent map. We have demonstrated that the period-doubling bifurcation is consistent with a Feigenbaum scenario. A new approach to particle property determination can, thus, be based on observing a period-doubling bifurcation.
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[Exosomes in the life cycle of viruses and the pathogenesis of viral infections]. Vopr Virusol 2023; 68:181-197. [PMID: 37436410 DOI: 10.36233/0507-4088-173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Indexed: 07/13/2023]
Abstract
Exosomes are extracellular vesicles of endosomal origin, with a bilayer membrane, 30160 nm in diameter. Exosomes are released from cells of different origins and are detected in various body fluids. They contain nucleic acids, proteins, lipids, metabolites and can transfer the contents to recipient cells. Exosome biogenesis involves cellular proteins of the Rab GTPase family and the ESCRT system, which regulate budding, vesicle transport, molecule sorting, membrane fusion, formation of multivesicular bodies and exosome secretion. Exosomes are released from cells infected with viruses and may contain viral DNA and RNA, as well as mRNA, microRNA, other types of RNA, proteins and virions. Exosomes are capable of transferring viral components into uninfected cells of various organs and tissues. This review analyzes the impact of exosomes on the life cycle of widespread viruses that cause serious human diseases: human immunodeficiency virus (HIV-1), hepatitis B virus, hepatitis C virus, SARS-CoV-2. Viruses are able to enter cells by endocytosis, use molecular and cellular pathways involving Rab and ESCRT proteins to release exosomes and spread viral infections. It has been shown that exosomes can have multidirectional effects on the pathogenesis of viral infections, suppressing or enhancing the course of diseases. Exosomes can potentially be used in noninvasive diagnostics as biomarkers of the stage of infection, and exosomes loaded with biomolecules and drugs - as therapeutic agents. Genetically modified exosomes are promising candidates for new antiviral vaccines.
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[Adjuvant effect of dispersed fullerene C60 on the immune response to constructs harboring amino acid and nucleotide sequences of hepatitis C virus nonstructural NS5B protein]. Vopr Virusol 2023; 67:516-526. [PMID: 37264841 DOI: 10.36233/0507-4088-149] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Indexed: 06/03/2023]
Abstract
INTRODUCTION A vaccine against hepatitis C has not yet been developed. Recombinant proteins and plasmids encoding hepatitis C virus (HCV) proteins, the components of candidate vaccines, induce a weak immune response and require the use of adjuvants. The aim of the work was to study the adjuvant action of an aqueous solution of fullerene C60 during immunization of mice with HCV recombinant protein NS5B (rNS5B) that is an RNA-dependent RNA polymerase, or with NS5B-encoding pcNS5B plasmid. MATERIALS AND METHODS An aqueous solution of dispersed fullerene (dnC60) was obtained by ultrafiltration. C57BL/6 mice were immunized with rNS5B subcutaneously, pcNS5B intramuscularly mixed with different doses of dnC60 three times, then the humoral and cellular response to HCV was evaluated. RESULTS Mice immunization with rNS5B in a mixture with dnC60 at doses of 250 g/mouse significantly induced humoral response: a dose-dependent increase in IgG1 antibody titers was 720 times higher than in the absence of fullerene. There was no increase in the cellular response to rNS5B when administered with dnC60. The humoral response to DNA immunization was weak in mice of all groups receiving pcNS5B. The cellular response was suppressed when the plasmid was injected in a mixture with dnC60. CONCLUSIONS Dispersed fullerene dnC60 is a promising adjuvant for increasing the immunostimulating activity of weakly immunogenic proteins including surface and other HCV proteins, important for a protective response. Further research is needed to enhance the ability of dnC60 to boost the cellular immune response to the components of the candidate vaccine.
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[ANALYSIS OF THE STAFFING OF MEDICAL ORGANIZATIONS SUBORDINATE TO THE DEPARTMENT OF HEALTH OF THE CITY OF MOSCOW IN 2021]. PROBLEMY SOTSIAL'NOI GIGIENY, ZDRAVOOKHRANENIIA I ISTORII MEDITSINY 2022; 30:983-987. [PMID: 36385061 DOI: 10.32687/0869-866x-2022-30-s1-983-987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Indexed: 06/16/2023]
Abstract
An analysis was made of the structure and number of medical workers (doctors and paramedical personnel) of the Moscow healthcare system for the period 2017-2021. The analysis showed that the number of medical full-time positions over the same period increased by 13.6%, and regular positions of nursing staff by 8.9%. The provision of the population (per 10 thousand population) with doctors increased by 13.0% from 35.6 in 2017 to 40.2 in 2021. The provision of the population with nurses decreased by 2.4% from 58.4 in 2017 to 57.0 in 2021. Among medical workers, the number of individual doctors, over the same period, increased by 15.5%, and the number of individuals of paramedical personnel decreased by 3.4%. The staffing of medical rates (by positions), in general, decreased by 2.4% from 82.5 in 2017 to 80.5 in 2021, and the rates of nursing staff decreased by 9.7% from 87.4% in 2017 to 79.0% in 2021. The part-time ratio was 1.1 for medical positions and for positions of paramedical personnel. Issues related to low staffing and the coefficient of part-time employment for individual medical positions and positions of paramedical personnel require further resolution.
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Impact of Windblow on the Structure and Phytomass of Siberian Pine and Birch Forests of the Central Sikhote-Alin. CONTEMP PROBL ECOL+ 2022. [DOI: 10.1134/s1995425522070101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Anticancer Properties of Au(III) Complexes. RUSS J COORD CHEM+ 2022. [DOI: 10.1134/s1070328422700178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Double Pseudopolymeric [Au{S2CN(CH2)5}2]2[Ag2Cl4]·CH2Cl2 Complex: Preparation, Principles of Supramolecular Self-Assembly, Thermal Behavior, and Biological Activity against Mycolicibacterium smegmatis Strain. RUSS J COORD CHEM+ 2022. [DOI: 10.1134/s1070328422700063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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11
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Pyrogenic Carbon Pools of the Upper Amur Region. CONTEMP PROBL ECOL+ 2022. [DOI: 10.1134/s199542552207006x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Photonic Crystals and Their Analogues as Tools for Chemical Analysis. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822100033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Expression of HIV-1 Reverse Transcriptase in Murine Cancer Cells Increases Mitochondrial Respiration. Mol Biol 2022. [DOI: 10.1134/s0026893322050168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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14
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Application of Complex Forming Impregnated Polyvinyl Alcohol for the Determination of Carbohydrates by Optical Micrometry. RUSS J COORD CHEM+ 2022. [DOI: 10.1134/s1070328422100050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Colloidal photonic crystals with controlled morphology. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3627-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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[Mechanisms of Survival of Cytomegalovirus-Infected Tumor Cells]. Mol Biol (Mosk) 2022; 56:732-750. [PMID: 36165013 DOI: 10.31857/s0026898422050135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/19/2022] [Indexed: 06/16/2023]
Abstract
Human cytomegalovirus (HCMV) DNA and proteins are often detected in malignant tumors, warranting studies of the role that HCMV plays in carcinogenesis and tumor progression. HCMV proteins were shown to regulate the key processes involved in tumorigenesis. While HCMV as an oncogenic factor just came into focus, its ability to promote tumor progression is generally recognized. The review discusses the viral factors and cell molecular pathways that affect the resistance of cancer cells to therapy. CMV inhibits apoptosis of tumor cells, that not only promotes tumor progression, but also reduces the sensitivity of cells to antitumor therapy. Autophagy was found to facilitate either cell survival or cell death in different tumor cells. In leukemia cells, HCMV induces a "protective" autophagy that suppresses apoptosis. Viral factors that mediate drug resistance and their interactions with key cell death pathways are necessary to further investigate in order to develop agents that can restore the tumor sensitivity to anticancer drugs.
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[Physiological Media in Studies of Cell Metabolism]. Mol Biol (Mosk) 2022; 56:687-696. [PMID: 36165010 DOI: 10.31857/s002689842205007x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 03/01/2022] [Indexed: 06/16/2023]
Abstract
Changes in cell metabolism accompany the development of a wide spectrum of pathologies including cancer, autoimmune, and inflammatory diseases. Therefore, usage of inhibitors of metabolic enzymes are considered a promising strategy for the development of therapeutic agents. However, the investigation of cellular metabolism is hampered by the significant impact of culture media, which interfere with many cellular processes, thus making cellular models irrelevant. There are numerous reports that show that the results from in vitro systems are not reproduced in in vivo models and patients. Over the last decade a novel approach has emerged, which consists of adaptation of the culture medium composition to that closer to the composition of blood plasma. In 2017-2019, two plasma-like media were proposed, Plasmax and HPLM. In the review, we have summarized the drawbacks of common media and have analyzed changes in the metabolism of cells cultivated in common and plasma-like media in normal and pathological conditions.
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[Expression of HIV-1 Reverse Transcriptase in Murine Cancer Cells Increases Mitochondrial Respiration]. Mol Biol (Mosk) 2022; 56:795-807. [PMID: 36165018 DOI: 10.31857/s0026898422050160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 05/13/2022] [Indexed: 06/16/2023]
Abstract
Changes in metabolic pathways are often associated with the development of a wide range of pathologies. Increased glycolysis under conditions of sufficient tissue oxygen supply and its dissociation from the Krebs cycle, known as aerobic glycolysis or the Warburg effect, is a hallmark of many malignant neoplasms. Identification of specific metabolic shifts can characterize the metabolic programming of individual types of tumor cells, the stage of their transformation, and predict their metastatic potential. Viral infection can also alter the metabolism of cells to support the process of viral replication. Infection with human immunodeficiency virus type 1 (HIV-1) is associated with an increased incidence of various cancers, and for some viral proteins a direct oncogenic effect was demonstrated. In particular, we showed that the expression of HIV-1 reverse transcriptase (RT) in 4T1 breast adenocarcinoma cells increases the tumorigenic and metastatic potential of cells in vitro and in vivo by a mechanism associated with the ability of RT to induce reactive oxygen species in cells (ROS). The aim of this work was to study the molecular mechanism of this process, namely the effect of HIV-1 RT on the key metabolic pathways associated with tumor progression: glycolysis and mitochondrial respiration. Expression of HIV-1 RT had no effect on the glycolysis process. At the same time, it led to an increase in mitochondrial respiration and the level of ATP synthesis in the cell, while not affecting the availability of the substrates, carbon donors for the Krebs cycle, which excludes the effect of RT on the metabolic enzymes of cells. Increased mitochondrial respiration was associated with restoration of the mitochondrial network despite the RT-induced reduction in mitochondrial mass. Increased mitochondrial respiration may increase cell motility, which explains their increased tumorigenicity and metastatic potential. These data are important for understanding the pathogenesis of HIV-1 infection, including the stimulation of the formation and spread of HIV-1 associated malignancies.
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Intensifying the Processes of Polysaccharide Extraction from Plant Raw Materials under the Action of an Electric Current. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2022. [DOI: 10.3103/s1068375522040111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Development of an Automated Vertical Farm Module for Growing Plants Using Additive Technology. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2022. [DOI: 10.1134/s0040579522040030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Functional Capabilities of Electromagnetic-Acoustic Transformations in Current Mode in the Metal Melt. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2022. [DOI: 10.3103/s1068375522030139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Preparation, Supramolecular Self-Organization (Construction of 2D Pseudopolymer Architecture), 13C and 15N CP/MAS NMR, and Thermal Behavior of the Double Au(III)–Hg(II) Complex [Au(S2CNBui2)2]2[Hg2Cl6]. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222060159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Changes in the Diversity of Conifer–Broadleaf Forests of Southern Primorye Resulting from Selective Logging and Fires. RUSS J ECOL+ 2022. [DOI: 10.1134/s1067413622020047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Formation of Niobium Diboride Nanoparticles by the Reaction of Niobium Pentachloride with Sodium Borohydride in Ionic Melts of Alkali Metal Halides. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222020189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Pseudobinuclear, [Bi(S2CNiPr2)3]2, and Pseudopolymeric, [Bi(S2CNiPr2)2][Bi(S2CNiPr2)Cl3], Bismuth(III) Complexes: Synthesis, Supramolecular Self-Assembly (the Role of Secondary Bi⋅⋅⋅S, Bi⋅⋅⋅Cl, and S⋅⋅⋅Cl Interactions), and Thermal Behavior. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622010077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Physiological Media in Studies of Cell Metabolism. Mol Biol 2022; 56:629-637. [PMID: 36217338 PMCID: PMC9534458 DOI: 10.1134/s0026893322050077] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/22/2022] [Accepted: 03/01/2022] [Indexed: 11/11/2022]
Abstract
Changes in cell metabolism accompany the development of a wide spectrum of pathologies including cancer, autoimmune, and inflammatory diseases. Therefore, usage of inhibitors of metabolic enzymes are considered a promising strategy for the development of therapeutic agents. However, the investigation of cellular metabolism is hampered by the significant impact of culture media, which interfere with many cellular processes, thus making cellular models irrelevant. There are numerous reports that show that the results from in vitro systems are not reproduced in in vivo models and patients. Over the last decade a novel approach has emerged, which consists of adaptation of the culture medium composition to that closer to the composition of blood plasma. In 2017‒2019, two plasma-like media were proposed, Plasmax and HPLM. In the review, we have summarized the drawbacks of common media and have analyzed changes in the metabolism of cells cultivated in common and plasma-like media in normal and pathological conditions.
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Mechanisms of Survival of Cytomegalovirus-Infected Tumor Cells. Mol Biol 2022; 56:668-683. [PMID: 36217337 PMCID: PMC9534468 DOI: 10.1134/s0026893322050132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 11/04/2022]
Abstract
Human cytomegalovirus (HCMV) DNA and proteins are often detected in malignant tumors, warranting studies of the role that HCMV plays in carcinogenesis and tumor progression. HCMV proteins were shown to regulate the key processes involved in tumorigenesis. While HCMV as an oncogenic factor just came into focus, its ability to promote tumor progression is generally recognized. The review discusses the viral factors and cell molecular pathways that affect the resistance of cancer cells to therapy. CMV inhibits apoptosis of tumor cells, that not only promotes tumor progression, but also reduces the sensitivity of cells to antitumor therapy. Autophagy was found to facilitate either cell survival or cell death in different tumor cells. In leukemia cells, HCMV induces a "protective" autophagy that suppresses apoptosis. Viral factors that mediate drug resistance and their interactions with key cell death pathways are necessary to further investigate in order to develop agents that can restore the tumor sensitivity to anticancer drugs.
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Granulated Metamaterial Cross-Linked Polyvinyl Alcohol-Magnetite for Use in Optical Micrometry. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2021. [DOI: 10.1134/s0040579521050067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Plasma low molecular weight aminothiols in ischemic stroke patients with type 2 diabetes mellitus. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2021. [DOI: 10.24075/brsmu.2021.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It was found that ischemic stroke (IS) results in decreased levels of a number of reduced forms of low molecular weight aminothiols (LMWTs). The study was aimed to assess the impact of type 2 diabetes mellitus (Т2D) on the total content, reduced forms and redox status of LMWTs in patients with IS. A total of 175 patients with IS in the internal carotid artery basin (the average age was 62 (55–69)) years) were assessed, who were admitted to the Center within the first 10–24 h since the onset of neurological disorder. The index group included 68 patients with IS and T2D (males made up 41.2%). The comparison group consisted of 107 patients with IS and stress hyperglycemia (males made up 57%), and the control group included 31 non-diabetic patients with chronic cerebrovascular disease (CCVD) (males made up 54.8%). The admission plasma levels of LMWTs were assessed by liquid chromatography in all patients. It was found, that IS in patients with T2D was associated with the rapid decrease in total cysteine (tCys), total glutathione (tGSH), total homocysteine (tHcy), reduced glutathione (rGSH), and glutathione redox status (GSH RS), along with the increase in cysteine redox status (Cys RS) and homocysteine redox status (Hcy RS). In contrast to patients with stress hyperglycemia developing during the acute period of IS, patients with T2D had lower tCys, tGSH, and tHcy levels. Thus, GSH RS of 4.06% or lower in the first 24 hours after the IS in patients with T2D was a predictor of poor functional outcome (mRS score was 3 or more 3 weeks after IS).
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Binding of Gold(III) from Solutions by the [Ag6{S2CN(CH2)6}6] Cluster: Synthesis, Thermal Behavior, and Self-Organization of the Supramolecular Structure of the Double Complex [Au{S2CN(CH2)6}2]2[AgCl2]Cl·2CHCl3 (Role of Secondary Au⋅⋅⋅Cl, Ag⋅⋅⋅S, and Cl⋅⋅⋅Cl Interactions). RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s1070328421090050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract
The capability of silver(I) cyclo-hexamethylenedithiocarbamate to concentrate gold(III) from solutions characterized by a high level of salinity (5.15 M NaCl) into the solid phase has been established. The double chloroform-solvated Au(III)–Ag(I) complex [Au{S2CN(CH2)6}2]2[AgCl2]Cl·2CHCl3 (I) was preparatively isolated as an individual form of binding of [AuCl4]– anions. The composition of the ionic structural units of compound I indicates that gold(III) binding from a solution to the solid phase is accompanied by the complete redistribution of the HmDtc ligands between the coordination spheres of Ag(I) and Au(III). Complex I characterized by IR spectroscopy, simultaneous thermal analysis, and X-ray structure analysis (CIF file CCDC no. 2051654) exhibits the supramolecular structure containing two oppositely charged pseudo-polymeric subsystems. Complex cations [Au{S2CN(CH2)6}2]+ and anions [AgCl2]– (in a ratio of 2 : 1) form a complicatedly organized cation-anionic pseudo-polymeric ribbon ({[Au(HmDtc)2]⋅⋅⋅[AgCl2]⋅⋅⋅[Au(HmDtc)2]}+)n due to secondary interactions Ag⋅⋅⋅S (3.2613 Å) and Au⋅⋅⋅Cl (3.2765 Å). The pseudo-polymeric ribbon consists of two rows of cations and a row of anions. The outer-sphere chloride ions combine the solvate chloroform molecules by two equivalent hydrogen bonds Cl⋅⋅⋅H–C yielding anion-molecular triads [Cl3CH⋅⋅⋅Cl⋅⋅⋅HCCl3]–, which are involved in the formation of the supramolecular ribbon due to the secondary Cl⋅⋅⋅Cl interactions (3.4058 Å) between the nonequivalent chlorine atoms of the nearest solvate molecules. The study of the thermal behavior of complex I makes it possible to determine the character of thermolysis and conditions for the quantitative regeneration of bound gold.
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Acute coronary syndrome in patients with cancer: features of the course and the possibility of predicting hospital and long-term (6 months) periods using GDF-15, NT-proBNP, hs-CRP biomarkers. KARDIOLOGIIA 2021; 61:4-13. [PMID: 34763634 DOI: 10.18087/cardio.2021.10.n1765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/13/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
Aim To evaluate clinical features of the course of acute coronary syndrome (ACS) in patients with oncological diseases (OD) and to determine the role of biomarkers GDF-15, NT-proBNP, and hs-CRP in short-term and long-term prognoses.Material and methods In 88 patients (34 patients with ACS and OD and 54 patients with ACS without OD), complaints and historical, objective, and laboratory and instrumental data were evaluated and blood concentrations of GDF-15, NT-proBNP, and hs-CRP biomarkers were measured on the first day of hospitalization. Incidence of cardiovascular complications (CVC) and outcomes of hospital and long-term (6 months) periods were analyzed. Statistical analysis of results was performed with the Statistica 12.0, MedCalc 19.1.7 software. The level of statistical significance was р<0.05.Results In the ACS+OD group as compared to the ACS without OD group, the onset of disease was mostly atypical, with shortness of breath and/or general weakness; the ACS+OD patients more frequently had III-IV Killip class acute heart failure (29 and 7 %, р=0.01); mean hemoglobin concentration (125.6±27.9 and 141±16.6 g/l, р=0.003), prothrombin index (76.4±15.2 and 84.9±17.6 %, р=0.003), and left ventricular ejection fraction (47.7±6.1 and 50.7±7.2 %, р=0.02) were lower; and median concentrations of GDF-15 (1.95 [1.3; 2.8] and 1.45 [1.2; 2.0] ng/ml, р=0.03), NT-proBNP (947.3 [517.8; 1598.2], and 491.1 [85.1; 1069.1] pg/ml, р=0.006), and hs-CRP (14.1 [8.15; 36.75] and 7.8 [4.4; 16.2] mg/l, р=0.01) were higher. The presence of OD was associated with development of CVC, including urgent endpoints in the long-term and also increased the probability of fatal outcome within 6 months after discharge from the hospital. To predict the risk of CVC in patients with ACS and OD, two models with high prognostic values (AUC>0.9) were proposed. In the long-term, the value of NT-proBNP (cut-off point >524.5 pg/ml) was a statistically significant predictor for development of endpoints with a high predictive value (AUC>0.8).Conclusion The features of the clinical course of ACS in patients with OD indicate the importance of isolating such patients into a separate group. Additional use of the developed models, along with a standard risk assessment by the GRACE scale, will allow individualized management of patients with ACS and OD during the hospital and long-term (6 months) periods.
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Microbiota of semen samples with normozoospermia: analysis of real-time PCR data. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2021. [DOI: 10.24075/brsmu.2021.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The analysis of semen microbiota is difficult due to the lack of established criteria for interpretation of microbiological tests. The aim of the study was to determine the stable clusters of semen microbiota analyzed by real-time PCR in samples with normozoospermia. Semen samples of 227 men with normal spermiograms were included in the study. The quantity of total bacterial DNA and at least one group of microorganisms was more than 103 GE/ml in 107 (41.7%) samples. Four stable microbiota clusters with the prevalence of a specific microorganism group were distinguished in these samples: obligate anaerobes (OA) cluster (proportion in the centroid — 81.1%); Lactobacillus spp. cluster (proportion in the centroid — 64.3%); gram-positive facultative anaerobes (GPFA) cluster (proportion in the centroid — 92.5%); Enterobacteriaceae/Enterococcoccus (EE) cluster (proportion in the centroid — 80.8%). The clusters were ranked by frequency of occurrence: OA cluster was the most prevalent (43 (40.2%) of 107), second-most frequent were GPFA-cluster (27 (25.2%)) and Lactobacillus-cluster (22 (20.6%)). EE-dominated cluster was found in 15 (14.0%) cases.
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Heteroleptic Bismuth(III) Dithiocarbamato-Chlorido Complexes of [Bi(S2CNR2)Cl2] and [Bi(S2CNR2)2Cl] (R = C3H7, iso-C4H9): Preparation, 1D Polymer Structures, Heteronuclear (13C, 15N) CP MAS NMR, and Thermal Behavior. RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s1070328421010036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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DOUBLE GOLD(III)–ZINC(II) DI-ISO-BUTYLDITHIOCARBAMATO- CHLORIDO COMPLEXES OF THE COMPOSITION [Au(S2CNR2)2]2[Zn2Cl6] AND [Au(S2CNR2)2][Zn(S2CNR2)Cl2]: SYNTHESIS, STRUCTURAL ORGANIZATION, 13C CP-MAS NMR, AND THERMAL BEHAVIOR. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621010157] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Integrated Approach to Monitoring Volatile Organic Compounds by Photonic-Crystal Sensor Matrices. RUSS J INORG CHEM+ 2021. [DOI: 10.1134/s0036023621020030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Metamaterials Based on Polyvinyl Alcohol with Metal or Metal Oxide Particles: Synthesis and Study by Nondestructive Physical Methods. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2020. [DOI: 10.1134/s0040579520050115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Binding of Gold(III) from Solutions by Tetranuclear Lead(II) Dipropyldithiocarbamate [Pb4{S2CN(C3H7)2}8] and Chemisorption Synthesis of the Double Ionic Polymer Complex ([Au{S2CN(C3H7)2}2][PbCl3] · 0.5CH3–C6H5)n: Heteronuclear (
13
C,
15
N) CP-MAS NMR, Structural Organization, and Construction Principles of Cationic and Anionic Polymer Chains. RUSS J COORD CHEM+ 2020. [DOI: 10.1134/s1070328420110032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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[Aminothiols in blood plasma at different subtypes of ischemic stroke]. Zh Nevrol Psikhiatr Im S S Korsakova 2020; 120:17-23. [PMID: 33016672 DOI: 10.17116/jnevro202012008217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To evaluate the hemostasis of plasma aminothiols in different subtypes of ischemic stroke (IS). MATERIAL AND METHODS The study included 177 patients, aged 62 (55-68) years, admitted in the first 8-24 hours since IS onset. The pathogenetic subtype of IS was clarified according to the results of clinical and instrumental examination by the Trial of ORG 10172 in Acute Stroke Treatment criteria. Determination of the total plasma aminothiols levels, their reduced forms and redox status was performed using the ultra-efficient Acquity H-Class UPLC liquid chromatograph (Waters, CSHA). RESULTS Large-artery atherosclerosis was diagnosed in 24.3% patients, cardioembolic stroke in 20.3%, lacunar stroke in 55.4%. Significant differences in total levels of cysteine (Cys), glutathione (Gsh) and homocysteine (Hcy) were identified in patients with different IS subtypes. Patients with large-artery atherosclerosis and lacunar stroke showed the highest level of Hcy, patients with cardioembolic stroke had the lowest levels of Cys and Gsh. CONCLUSION Total levels of plasma aminothiols are associated with different subtypes of IS.
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Abstract
To this day semen microbiota is still poorly understood, and clinical significance of detecting specific microorganism groups has not been clearly determined. The aim of this work was to conduct cluster analysis of semen microbiota detected using real-time PCR. 634 semen samples of reproductive age men were analyzed using the Androflor kit. Microbial DNA in the quantity of no less than 103 GE/ml was detected in 460 samples (72.5%). From 1 to 14 microorganism groups were detected in 350 samples (55.2%) in the quantities that exceeded the threshold values (the detection rate of specific groups: 3.3–21.0%). In these 350 samples 4 stable microbiota clusters were determined. Each of the clusters was characterized by the prevalence of a specific microorganism group: obligate anaerobes (cluster 1; n = 172; detection rate — 49.1%), Lactobacillus spp. (cluster 2; n = 78; detection rate — 22.3%), gram-positive facultative anaerobes (cluster 3; n = 62; detection rate — 17.7%), Enterobacteriaceae / Enterococcoccus (cluster 4; n = 62; detection rate — 10.9%). Cluster 1 was less stable and was characterized by the larger species diversity compared to other clusters.
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Chemisorptive Synthesis, Self-Assembly of Complicated 2D and 3D Supramolecular Architectures (Role of Hydrogen Bonds and Secondary Interactions Au···S and S···Cl), and Thermal Behavior of Pseudo-Polymeric Gold(III)–Mercury(II) Dibutyldithiocarbamato-Chlorido Complexes. RUSS J COORD CHEM+ 2020. [DOI: 10.1134/s107032842009002x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Leaf Area Indices of Forest Stands in Natural and Disturbed Forests of Primorsky Krai. RUSS J ECOL+ 2020. [DOI: 10.1134/s1067413620040086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Study into the Effect of Near-Boundary Zones of Phases with Different Conductivity on Distribution of Electric and Thermal Fields during Passage of an Electric Current through the Melt. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2020. [DOI: 10.3103/s1068375520040079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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The first experience with Angiovit in the combination treatment of acute COVID-19 infection. ACTA ACUST UNITED AC 2020. [DOI: 10.14412/2074-2711-2020-3-82-86] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Efficient optimization method for finding minimum energy paths of magnetic transitions. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:345901. [PMID: 32316000 DOI: 10.1088/1361-648x/ab8b9c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
Efficient algorithms for the calculation of minimum energy paths of magnetic transitions are implemented within the geodesic nudged elastic band (GNEB) approach. While an objective function is not available for GNEB and a traditional line search can, therefore, not be performed, the use of limited memory Broyden-Fletcher-Goldfarb-Shanno (LBFGS) and conjugate gradient algorithms in conjunction with orthogonal spin optimization (OSO) approach is shown to greatly outperform the previously used velocity projection and dissipative Landau-Lifschitz dynamics optimization methods. The implementation makes use of energy weighted springs for the distribution of the discretization points along the path and this is found to improve performance significantly. The various methods are applied to several test problems using a Heisenberg-type Hamiltonian, extended in some cases to include Dzyaloshinskii-Moriya and exchange interactions beyond nearest neighbours. Minimum energy paths are found for magnetization reversals in a nano-island, collapse of skyrmions in two-dimensional layers and annihilation of a chiral bobber near the surface of a three-dimensional magnet. The LBFGS-OSO method is found to outperform the dynamics based approaches by up to a factor of 8 in some cases.
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Distribution Features of Electromagnetic and Hydrodynamic Fields in the Conductive Electric-Current Treatment of Melts Using Parallel Electrodes. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2020. [DOI: 10.3103/s1068375520030072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Deep Extraction of Fullerene-Containing Carbon Black with a Polar Solvent: Analysis of Products. RUSS J APPL CHEM+ 2020. [DOI: 10.1134/s1070427220040072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Resistance of THP-1 Leukemia Cells Infected with Cytomegalovirus to Anti-tumor Antibiotic Doxorubicin and Restoration of the Sensitivity by Inhibitors of the PI3K/AKT/mTOR Molecular Pathway. DOKL BIOCHEM BIOPHYS 2020; 489:388-391. [PMID: 32130607 DOI: 10.1134/s1607672919060073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Indexed: 11/23/2022]
Abstract
Results obtained showed that infection with HCMV prevented the death of THP-1 cells treated with DOX in both active and latent forms of infection. In the presence of mTOR inhibitors (rapamycin and Torin2), the sensitivity of the infected cells to DOX was restored. Rapamycin inhibited the expression of the HCMV protein IE1-p72 and increased sensitivity to DOX. Molecular targets for the creation of new drugs for the treatment of leukemia in patients infected with HCMV were determined.
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Effect of r-Al2O3 Single-Crystal Substrate on Growth of Ti1– xVxO2 Particles under Hydrothermal Conditions. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620030080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Minimax estimators of parameters of a regression model. THEORY OF PROBABILITY AND MATHEMATICAL STATISTICS 2020. [DOI: 10.1090/tpms/1082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Evaluation of the efficiency and safety of magnet therapy for osteoarthritis. Results of the multicenter blind placebo-controlled study COSMO (Clinical Evaluation of Current Magnet Therapy for Osteoarthritis). ACTA ACUST UNITED AC 2020. [DOI: 10.14412/1995-4484-2020-55-61] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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