The effect of recombinant TNF-α on programmed death of donor lymphocytes was studied in vitro. The proapoptotic effect of this cytokine is realized through transcription factors and cell cycle inhibitors. Incubation of lymphocytes with recombinant TNF-α revealed increased levels of NF-kB and p21 and reducted content of nonphosphorylated p53.
General patterns and peculiarities of changes in structure and function of red blood cell’s membrane during pathology of different genesis are considered in the article. Based on literature data and our own investigations one concludes concerning presence of typical molecular disturbances of erythrocyte’s membrane in different diseases. But general character of molecular modification of plasmatic membrane during pathology of different genesis is controversial. Universal mechanisms of structural and functional modification of structure and function of cells’ membrane are considered in details.
We studied in vitro effects of recombinant interleukin-5, interleukin-3, and eotaxin on programmed death of eosinophils from healthy donors and patients with non-Hodgkin's lymphomas associated with severe blood eosinophilia. Interleukin-5 and eotaxin produced the most potent antiapoptotic effect on eosinophils from healthy donors. In patients with non-Hodgkin's lymphomas, spontaneous apoptosis in eosinophilic leukocytes was low and remained unchanged during incubation with recombinant proteins.
Characteristics of changes in the membrane potential induced by increased Ca ~-~ inward current in patients with lung cancer are presented. Both the amplitude and the rate of hyperpolarization induced by opening of Ca2+-activated potassium channels are markedly decreased in erythrocytes from patients in comparison with healthy donors. Under conditions of moderate Ca 2+ inward current, hyperpolarization is followed by restoration of the membrane potential. This process is more rapid in cancer patients. It is shown that the parameters of hyperpolarization in their dynamics during antitumor therapy depend on the type of lung cancer.
Research of influence of recombinant tumor necrosis factor alpha, interleukin-2 and interleukin-4 in vitro on the apoptosis of lymphocytes is performed. It is revealed that a proapoptotic effect of these cytokines is dose-dependent and is realized with the assistance of reactive oxygen species and mitochondrias.
Aim. Using bioinformatic tools, to perform a pathway enrichment analysis in Alzheimer’s disease and coronary heart disease (CHD).Materials and methods. Genes contributing to susceptibility to CHD and Alzheimer’s disease were obtained from the public database DisGeNET (Database of Gene – Disease Associations). A pathway enrichment analysis was performed in the ClueGO Cytoscape plug-in (version 3.6.0) using hypergeometric distribution and the KEGG and Reactome databases.Results. The identified genes contributing to susceptibility to Alzheimer’s disease and CHD are included in 69 common signaling pathways, grouped into the following subgroups: cell death signaling pathways (1); signaling pathways regulating immune responses (2); signaling pathways responsible for fatty acid metabolism (3); signaling pathways involved in the functioning of the nervous system (4), cardiovascular system (5), and endocrine system (6).Conclusion. Following the performed analysis, we identified possible associations between processes involving genetic factors and their products in CHD and Alzheimer’s disease. In particular, we assumed that susceptibility genes involved in the implementation of these pathways regulate apoptosis, production of inflammatory cytokines and chemokines, lipid metabolism, β-amyloid formation, and angiogenesis.
Main features of pathogenesis of tick-borne encephalitis virus ’ persistense and outcome of the disease are determined by a complex xharacter of interaction between the virus and immune system of a patient. One of the main terms of pathogenetically im- portant virus activation is a low immune resistanse of an organism. The current article discusses role of modification of cellular dif- ferentiation, intercellular cooperation and cytogenetic instability of immunocytes as well as apoptosis as leading features of immu- nopathogenesis of tick-borne encephalitis.
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