Центральная Научная Библиотека УрО РАН

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    Modulation of Cytokine secretion and oxidative metabolism of innate immune effectors by Rhodococcus Biosurfactant / V. A. Chereshnev, S. V. Gein, T. A. Baeva [et al.] // Bulletin of experimental biology and medicine. - 2010. - Vol. 149, № 6. - P734-738
Кл.слова (ненормированные):
RHODOCOCCUS RUBBEr -- GLYCOLIPID BIOSURFACTANT -- INTERLEUKIN-10
Аннотация: The glycolipid biosurfactant complex from Rhodococcus ruber IEGM 231 had a stimulatory effect on the production of IL-12, IL-18, and reactive oxygen species by cells of the innate immunity. This effect depended on the composition of cell cultures and presence of LPS. It was primarily observed in non-stimulated cultures. The glycolipid biosurfactant complex had little effect on IL-10 secretion by monocytes and mononuclear cells

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   I-56


    Impact of bacterial autoregulatory molecules (homoserine lactones and alkylhydroxybenzenes) on the oxidative metabolism of the cell effectors of natural immunity / D. G. Deryabin, T. G. Sviridova, G. I. El'-Registan, V. A. Chereshnev // Microbiology. - 2013. - Vol. 82, № 2. - P133-141

ББК 57
Рубрики: БИОЛОГИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ALKYLHYDROXYBENZENES -- CHEMOLUMINESCENCE -- HOMOSERINE LACTONES
Аннотация: We investigated the impact of bacterial regulators homoserine lactones (HSLs) and alkylhydroxybenzenes (AHBs) (which are present in human fluids at pico- and nanomolar concentrations) on neutrophile oxidative metabolism. The HSL and AHB effects were determined using a test based on induced luminol-dependent chemoluminescence of neutrophiles in human peripheral blood. In this test, neutrophiles were preincubated with chemical analogs of bacterial autoregulators with different lengths of the hydrocarbon radical, such as HSL · HCl, C6- and C12-HSL, and C1-, C6-, and C12-AHB. We revealed that they suppressed the chemoluminescence and, accordingly, the oxidative metabolism of neutrophiles. This effect was more significant with HSLs than with AHBs. Within each of the two groups, the effect increased with an increase in the length of the hydrocarbon chain of the homologues. High concentrations of long-chain autoregulators of both types produce a cytotoxic effect that is associated with apoptosis in the case of C12-HSL and with cell membrane damage in the case of C12-AHB. The effects of low HSL and AHB concentrations involve their protein-modifying properties and result in changes in the activities of neutrophile oxidative enzymes. To a lesser extent, these effects are due to the pro- and antioxidant activities of HSLs and AHBs, respectively. In light of the results obtained, the HSL and AHB effects are to be considered as a novel mechanism of regulating the activities of cell effectors of natural innate immunity. In symbiotic and parasitic systems, the mechanism involves the bimodal pattern of the effects of HSLs and AHBs that vary depending on their structure and concentrations

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   T 44


    The influence of bacterial autoregulation molecules (homoserine lactones and alkyloxybenzoles) on oxidative metabolism of the natural immunity cellular effectors. [Electronic resource] / D. G. Deryabin, T. G. Sviridova, G. I. El'-Registan, V. A. Chereshnev // Mikrobiologiia. - 2013. - Vol. 82, № 2. - P147-156

ББК 61
Рубрики: ЗДРАВООХРАНЕНИЕ. МЕДИЦИНСКИЕ НАУКИ
Кл.слова (ненормированные):
ANTIOXIDANT -- BENZENE -- DRUG DERIVATIVE

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    Применение защитных белков теплового шока-70 для борьбы с COVID-19 / В. А. Черешнев, С. Б. Оникиенко, А. В. Земляной, С. В. Абкин // Журнал инфектологии. - 2022. - Т. 14, № 2, Приложение 1 : Материалы VIII Конгресса Евро-Азиатского общества по инфекционным болезням, Санкт-Петербург, 17-19 мая 2022. - С. 134-135
Рубрики: ЗДРАВООХРАНЕНИЕ. МЕДИЦИНСКИЕ НАУКИ
Кл.слова (ненормированные):
COVID 19 -- КОРОНАВИРУС -- ШОК ТЕПЛОВОЙ -- БЕЛКИ ЗАЩИТНЫЕ
Аннотация: We investigated the impact of bacterial regulators homoserine lactones (HSLs) and alkylhydroxybenzenes (AHBs) (which are present in human fluids at pico- and nanomolar concentrations) on neutrophile oxidative metabolism. The HSL and AHB effects were determined using a test based on induced luminol-dependent chemoluminescence of neutrophiles in human peripheral blood. In this test, neutrophiles were preincubated with chemical analogs of bacterial autoregulators with different lengths of the hydrocarbon radical, such as HSL · HCl, C6- and C12-HSL, and C1-, C6-, and C12-AHB. We revealed that they suppressed the chemoluminescence and, accordingly, the oxidative metabolism of neutrophiles. This effect was more significant with HSLs than with AHBs. Within each of the two groups, the effect increased with an increase in the length of the hydrocarbon chain of the homologues. High concentrations of long-chain autoregulators of both types produce a cytotoxic effect that is associated with apoptosis in the case of C12-HSL and with cell membrane damage in the case of C12-AHB. The effects of low HSL and AHB concentrations involve their protein-modifying properties and result in changes in the activities of neutrophile oxidative enzymes. To a lesser extent, these effects are due to the pro- and antioxidant activities of HSLs and AHBs, respectively. In light of the results obtained, the HSL and AHB effects are to be considered as a novel mechanism of regulating the activities of cell effectors of natural innate immunity. In symbiotic and parasitic systems, the mechanism involves the bimodal pattern of the effects of HSLs and AHBs that vary depending on their structure and concentrations

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   I-34


    Identification of the immune subtype among muscle-invasive bladder cancer patients by multiple datasets / K. Shinwari, Z. Chen, Z. Liu Guojun [et al.] // Acta Medica Indonesiana. - 2022. - Vol. 54, № 1. - P62-71

ББК 61
Рубрики: ЗДРАВООХРАНЕНИЕ. МЕДИЦИНСКИЕ НАУКИ
Кл.слова (ненормированные):
MOLECULAR SUBTYPE -- IMMUNOTHERAPY -- MIBC
Аннотация: Background: Immunotherapies including PD-1/PD-L1 antibodies have been approved for the treatment of Muscle-invasive Bladder Cancer (MIBC) patients. However, immunotherapies could only be beneficial for about 20% MIBC patients. Thus, identification of the immune subtype is becoming increasingly important. This study aimed to explore the immune subtype by analyzing the gene expression profiles. Methods: A total of 6 datasets including (GSE13507, GSE31684, GSE32548, GSE32894, GSE69795, and TCGA-BLCA) were downloaded. The gene expression profiles from different datasets were combined since the batch effects were removed. We performed unsupervised clustering analysis to identify the immune subtype by the combined gene expression profiles. The tumor-infiltration levels of 22 immune cells, immune scores, and tumor purity were calculated, and the survival analysis was performed to investigate the prognosis difference between immune subtypes. The enriched pathways for each immune subtype were obtained. Results: We identified four novel immune subtypes (referred to S1, S2, S3, and S4) among MIBC patients. We found that S1 was enriched in immune scores had the best prognosis. In contrast, S3 was poor in immune scores and had the worst prognosis. Subtype S1, S2, S3, and S4 were enriched in immune-related pathways, extracellular matrix-related pathways, metabolism-related pathways, and cancer-related pathways, respectively. Conclusion: The current study suggests that the immune subtypes based on gene expression profiles could contribute to select the appropriate MIBC patient for immunotherapies.

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