The incidence of somatic mutagenesis of p53 oncosuppressor protein in malignant tumors of the stomach and genetic polymorphism of p53 were studied in patients with stomach cancer on DNA samples isolated from tumor tissues obtained during surgery. The incidence of Pro/Pro genotype increased in the patients, while the percentage of Arg/Pro heterozygotes was markedly lower compared to long-living persons without cancer. The incidence of p53 somatic mutations in exons 5, 7, 8 was 70.8%; multiple mutations were detected in half of the examined patients. The relationship between the intensity of p53 mutagenesis and histological structure of the tumor was detected. The contribution of p53 genetic status to the risk of stomach cancer can be more effectively evaluated on DNA samples isolated from not only tumor cells, but also from normal tissues. The effects of epigenetic factors determining the intensity of somatic mutagenesis of p53 in tumors should be taken into account.
The purpose of this work was to study the effect of turmeric extract on behavior indicators, the severity of the cellular immune response in animals in a state of experimental alcoholism. Experimental models: mouse males (CBAxC57Bl/6)F1 three months of age (n = 60). Alcohol dependence in experimental animals was formed by the method of 6-month soldering with a 10% ethanol solution. In the control groups, the animals received per os water or 10% ethanol solution, in the experimental group - an extract of turmeric powder in a solution of ethanol. Mice behavior was assessed in the “open field” test. The severity of the cellular immune response to sheep erythrocytes was assessed by the intensity of the development of a delayed-type hypersensitivity reaction.It was found that the use of turmeric extract against the background of taking ethanol solution in animals with experimental alcoholism leads to the stimulation of behavior and the increase of the cellular immune response to the level characteristic of healthy animals of the corresponding age.Results indicates the protective effect of turmeric on a number of parameters of the functional activity of the nervous and immune systems during chronic ethanol intoxication.
IntroductionOriginal compound ortho-fluorobenzonal, a barbiturate derivative, is shown to reveal strong anticonvulsant activity by means increasing GABA-mediation. Disturbance of GABA(A) -receptors functions play an essential role in both alcoholism and epilepsy pathogenesis.Objectives Taking into account the presence of GABA(A)-receptors on the lymphocytes surface and involvement of immune system in alcoholism pathogenesis, we investigated ortho-fluorobenzonal effects on the immune and nervous systems functional activities in mice with chronic alcohol exposure to find new perspective pharmacological substances in the treatment of alcoholism.Methods(CBAxC57Bl/6) F1 male mice with 6-month 10% ethanol exposure were undergoing intragastric administration of original compound ortho-fluorobenzonal for 10 days. Animal’s alcohol consumption, behavior and immune parameters were estimated.ResultsIt was found that ethanol daily consumption decreased sharply starting from 2 days of ortho-fluorobenzonal administration and led to the cessation of ethanol consumption by the 4 day in mice with chronic alcohol exposure. Pronounced changes in motor and exploratory activities in “open field” test was registered in long-term alcoholized mice after 10- day course ortho-fluorobenzonal administration. The above behavioral changes were recorded against the brain cytokines synthesis modulation. We have shown also the modulation by ortho-fluorobenzonal of immune system functional activity, in particular, significant cellular and humoral immune response stimulation, estimated by the relative number of antibody forming cells and reaction of delayed-type hypersensitivity respectively.ConclusionsOriginal compound ortho-fluorobenzonal has a positive neuroimmunomodulation effect that manifests itself in the correction of iimmune and behavior disorders caused by the chronic ethanol exposure, therefore, this compound is promising in the therapy of alcoholismDisclosureNo significant relationships.
IntroductionIn the scientific world widely discussed phenomenon of “cytokine-induced depression”. Macrophages have high plasticity and are able to control the inflammatory response; in particular, anti-inflammatory type-2 macrophages have a pronounced potential due to complex soluble factors production.ObjectivesWe have developed an original method for the type-2 macrophages generation; the resulting macrophages are characterized by the high level of a whole range of neurotrophic, neuroprotective, proangiogenic and anti-inflammatory factors production. The aim of the study was to investigate effects of human type-2 macrophages soluble products on behavioral phenotype and brain cytokines synthesis in depressive-like animals.MethodsType-2 macrophages were generated by culturing an adherent fraction of mononuclear cells with 50 ng/ml recombinant human GM-CSF in serum deprivation conditions for 7 days. (CBA x C57Bl/6)F1 depressive-like male mice, developed under the long-term social stress, were undergoing the human type-2 macrophages conditioned medium intranasal administration (60 ml twice daily for one animal) for 6 days. Mice behavioral phenotyping was carried out using an automatic registration system (Noldus Information Technology). Cytokines were determined by ELISA.ResultsDepressive-like mice behavioral phenotyping after type-2 macrophages conditioned medium administration revealed anhedonia decrease, motor activity stimulation in the open field and forced swimming tests, anxiety reduction in elevated plus maze. Behavioral changes were recorded against the pro-inflammatory cytokines (TNF-α, IL-1β, IL- 6, INFγ) decrease in striatum and hippocampus, as well as anti-inflammatory IL- 10 increase in hippocampus and hypothalamus.ConclusionsResults demonstrated the effectiveness of human type-2 macrophages biologically active soluble products in relation to the stress-induced depressive-like behavior editingDisclosureNo significant relationships.
ObjectiveViolation of the functional activity of the nervous and immune systems is an essential link in the pathogenesis of chronic alcohol dependence. The search for new psychopharmacological agents whose action is directed to correction of neuroimmune interaction opens new perspectives for the treatment of alcohol dependence.Methods(CBAxC57Bl/6) F1 mice with active and passive behavioral types in a state of chronic alcohol dependence owing to 6 month 10% ethanol exposure were undergoing intragastric administration of original anticonvulsant meta-chloro-benzhydryl-urea. Animal's behavioral and immune parameters, brain cytokines synthesis before and after anticonvulsant receiving were estimated.ResultsIn the formation of experimental alcohol dependence in animals the most pronounced changes in motor and exploratory activities in open field test, brain cytokines synthesis and suppression of immune response were registered in mice with passive type of behavior. Daily consumption of ethanol solution in mice with chronic alcohol dependence decreased sharply starting from 2 days of anticonvulsant administration and led to the cessation of ethanol consumption by the 5 day. After anticonvulsant administration for 10 days behavioral parameters in mice were comparable with those in the control group of healthy animals. It also restored brain cytokines synthesis and significant stimulated humoral immune response, estimated by the relative number of antibody-forming spleen cells.ConclusionBehavior and immune changes following chronic ethanol exposure depended on the behavior status of animals; administration of the original anticonvulsant meta-chloro-benzhydryl-urea may correct both immune and behavior disorders in mice with chronic alcohol dependence, so it has promise in the treatment of alcoholism.Disclosure of interestThe authors have not supplied their declaration of competing interest.
Chronic psychosocial stress provokes anxious behavior and depressive disorders. The longitudinal stress-induced neuroendocrine signals may alter functioning of immune (central and peripheral) organs. Increased myelopoiesis is observed in bone marrow, being detrimental to lympho- and erythropoiesis, with increased emigration of monocytic bone marrow cells to the periphery and their acquisition of “inflammatory” phenotype. The subsequent migration of such monocytes to the brain with differentiation into the M1 type macrophages which form inflammatory signals, and their effect upon endothelial cells and microglia leads to increased production of cytokines, chemokines, and adhesion molecules, thus accelerating accumulation of bone marrow-derived monocytes migrating to the brain. The signals from bone marrow monocytes and activated microglia promote neuroinflammatory condition which leads to behavioral changes. Current data on the presence of non-resident bone marrow macrophages in the brain of depressed patients require studies of hematopoiesis in depression-like states. Pronounced plasticity is a characteristic feature of macrophages, i.e., their ability to acquire M1 or M2 phenotype depending on the microenvironment signals. M1 exhibit high pro-inflammatory activity and have neurodestructive properties, whereas M2 cells are characterized by low pro-inflammatory activity and pronounced regenerative potential, due to the production of multiple soluble mediators and cytokines, including neurotrophic and immunoregulatory factors, anti-inflammatory substances that provide neuroprotection, stimulate neurogenesis, synaptogenesis, growth and myelinization of axons, thus theoretically substantiating an opportunity of using the potential of M2 macrophages in the treatment of depression. In this work, we studied the effect of soluble factors of human macrophages, polarized into cells with M2 phenotype under the conditions of serum deprivation, upon bone marrow hematopoiesis and peripheral blood cells in a model of stress-induced depression. We have shown enhanced differentiation of hematopoietic stem cells into the granulocyte-macrophage (CFU-GM) lineage, along with increased monocyte population in peripheral blood in the depressive-like murine model. Development of a depressive-like state in the animals was associated with reduced amounts of both erythroid precursors in bone marrow and erythrocytes/hemoglobin in peripheral blood. Intranasal administration of soluble M2 macrophage factors (M2-SFs) for 7 days was accompanied by a corrective effect on the above parameters, being significant for peripheral blood monocytes. The data obtained suggest effectiveness of the M2-SFS anti-inflammatory effects in correcting changes in hematopoiesis caused by social stress in depressive-like animals.
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