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Purpose of the study: to review in vivo studies on the relationship and role of various molecular genetic components of the circadian rhythm system in the initiation and development of malignant neoplasms. in contrast to clinical and epidemiological studies, animal models, including transgenic animal models, can model various changes and disturbances in the activity of clock genes and track the results of these changes.Material and Methods. the review includes data from studies carried out over the past 10 years in animal models, studying the mechanisms and effects of disturbances in the system of circadian rhythms related to the formation and development of tumors. the data sources for the review were the Medline, embase and scopus databases.Results. analysis of the literature has shown that interference with the work of the «biological clock» by changing the light cycle, disrupting the expression of clock genes and other manipulations is a factor predisposing to the development of tumors. in tumors of various types, the expression of clock genes is often mismatched, and it is unclear at what stage of their formation this occurs. in addition, the development of tumors disrupts the circadian homeostasis of the body. there are three key areas of research aimed at studying the role of circadian rhythms in tumor development: disturbance of circadian rhythms as a carcinogenic factor, disturbances in the clock gene system in a tumor, disturbances in the clock gene system of the whole organism, provoked by tumor development.Conclusion. the results of studies on animal models demonstrate that the relationship between the disturbance of circadian rhythms and the tumor process is complex since the causal relationship has not yet been studied. in this regard, the prospect of targeted pharmacological correction of circadian rhythms in clinical practice in cancer patients does not seem to be the nearest one.

Background. Photodynamic Therapy is one of the treatment methods used in modern oncology. Evaluation of the efficacy in vivo of photosensitizers on tumor models is generally accepted, but the photodynamic therapy technique in mice is not without drawbacks.The purpose of the study was evaluation of the efficacy of photodynamic therapy in mice with Ehrlich tumor model after subcutaneous and intracutaneous injection of tumor cells.Material and Methods. The study was conducted on BAL B/C mice of both sexes. Fotoditazin® and Radachlorin® were used as photosensitizers. For photoactivation, the Alod laser apparatus with a wavelength of 662 nm was used.Results. A comparison of photodynamic therapy with subcutaneous and intracutaneous localization of Ehrlich tumor was performed. It was shown that depending on the location and depth of inoculation of Ehrlich tumor, the pharmacokinetics (both the fluorescence intensity over time and the contrast ratio of the tumor/surrounding tissue) and pharmacodynamics (tumor growth inhibition, survival) of photosensitizers are significantly different. Higher contrast of the tumor/surrounding tissue is observed with intracutaneous localization of the tumor.Conclusion. A model with intracutaneous localization of Ehrlich tumor can be recommended for a primary assessment of efficacy; it allows the use of fewer animals in the experiment. When planning experiments to study photosensitizers and evaluating their results, the advantages and disadvantages of different methods for modeling tumors in mice should be taken into account.

Because of the high risk of brain metastases from HER2-positive breast cancer, the study of the anticancer activity of drugs used to treat brain tumors, in particular lomustine, is of great importance. In the FVB/N Her-2 transgenic mice bearing HER2-positive breast cancer (BC HER2+), a single oral administration of lomustine at a dose of 50 mg/kg resulted in a significant tumor growth inhibition (up to 96 %, p

Introduction. This article is devoted to psychological features in patients with pain syndrome in endometriosis and their pain perception.The objective of the study was to identify features of pain syndrome perception, personality traits, emotional features and satisfaction with quality of life in patients with endometriosis.Material and methods. 56 women were examined: 27 patients with endometriosis and 29 women without gynecological diseases. The following psychodiagnostic methods were used: «The McGill Pain Questionnaire», «Visual Analogue Scale», «Giessen test», the test of L. N. Sobchik «Diagnosis of interpersonal relationships», the questionnaire of N. E. Vodopyanova «Assessment of the level of satisfaction with the quality of life», «Hospital Anxiety and Depression Scale» (HADS).Results. The results of the study indicated that patients with painful forms of endometriosis were less satisfied with the quality of life in the field of health, emotional and physical comfort. The feminine type of gender-role behavior was identified in self-perception, and the responsibly-magnanimous style prevails in interpersonal relations. The perception of pain was interrelated with interpersonal behavior style.Conclusion. Psychological characteristics of patients with endometriosis must have been taken into account during treatment and rehabilitation, since they affected the subjective perception of pain, could reduce satisfaction with the quality of life and worsen the emotional state.

On culture of hippocampal HT-22 cells line it is shown that dimeric dipeptide mimetiks of different Loops of NGF realize their action via specific neurotrophic TrkA-receptor and selective activate post-receptor intracellular signal ways. Mimetiks of 1th (GK-6 (10-6M)) and the 3rd Loops (GTS-115 ((10-6M)) evoke activation of two main signal cascades - PI3/Akt and MAP/Erk, while mimetic the 4th loop of NGF (GK-2 (10-8M)) only one - a PI3/Akt-way.

Aim. To evaluate intensity of endothelial dysfunction, processes of apoptosis, state of central and peripheral hemodynamics and to evaluate how these characteristics are influenced by angiotensin II receptors antagonists (ARA II) – candesartan (Atacand) and losartan (Cosaar) in patients with chronic cor pulmonale (CCP) at different stages of disease.Material and methods. 100 patients with chronic obstructive pulmonary disease (COPD), complicated by CCP were included into the study. Caspase activity as apoptosis induction marker, von Willebrand factor, production of nitric oxide in blood plasma and condensate of breathing out air were assessed. 70 patients received ARA II (50 patients – candesartan 4-8 mg daily, 20 patients – losartan 50-100 mg daily), 30 patients received neither ARA II nor angiotensin converting enzyme inhibitors (ACEI).Results. Significant increase in intensity of endothelial dysfunction and activation of apoptosis processes were registered according to growth of CCP severity. After 6 months of therapy von Willebrand factor decreased by 25,2% and 27,7% in candesartan and losartan groups respectively (pConclusion. ARA II added to common therapy of COPD complicated by CCP improves functional state of endothelium restricting hyperproduction of nitric oxide and its toxic effects and slowing down apoptotic cell death.

Aim. To evaluate intensity of endothelial dysfunction, processes of apoptosis, state of central and peripheral hemodynamics and to evaluate how these characteristics are influenced by angiotensin II receptors antagonists (ARA II) – candesartan (Atacand) and losartan (Cosaar) in patients with chronic cor pulmonale (CCP) at different stages of disease.Material and methods. 100 patients with chronic obstructive pulmonary disease (COPD), complicated by CCP were included into the study. Caspase activity as apoptosis induction marker, von Willebrand factor, production of nitric oxide in blood plasma and condensate of breathing out air were assessed. 70 patients received ARA II (50 patients – candesartan 4-8 mg daily, 20 patients – losartan 50-100 mg daily), 30 patients received neither ARA II nor angiotensin converting enzyme inhibitors (ACEI).Results. Significant increase in intensity of endothelial dysfunction and activation of apoptosis processes were registered according to growth of CCP severity. After 6 months of therapy von Willebrand factor decreased by 25,2% and 27,7% in candesartan and losartan groups respectively (p

The investigation was carried out on the white outbred female rats (n = 80) which were being under the influence of15 % solution of ethanol during pregnancy, from the first to the sixth months before its approach and on their viable posterity (n = 440). Anatomic, macro-microscopic and statistical methods of research were used. Two periods of increasing mortality in rats were revealed: the first fell on 1st month of the experiment (mortality reached 25 %) and the second - on 5th and 6th months of the experiment when this indicator rose up to 10 %. The rats' pregnancy duration was increased: the most considerable prolongation of pregnancy (for 5 days) was determined in the female rats which were under the ethanol influence within six months before its approach. The pre-implantation mortality was prevailed in structure of the general antenatal mortality. The highest rates of these indicators were noted in the rats under the ethanol only during pregnancy, and also within two and six months before its approach. The maximum post-implantation mortality was registered in the animals which were affected by alcohol throughout five months before pregnancy. The indicator of mortality of posterity in the early post-natal period reached 100 % in posterity of female rats under the ethanol within three months before pregnancy and for its duration.

Abstract. Macrophages are among key players of inflammatory events, acquiring either pro-inflammatory M1, or anti-inflammatory M2 phenotype, dependent on their microenvironment. Some endogenous macrophagereprogramming factors (MRFs), e.g., TGF-β (an M2-inducing agent), are found in blood serum. This work confirms a hypothesis on in vitro M1-to-M2 phenotype reprogramming of cultured macrophages, by means of decrease or increase in serum concentration. Noteworthy, the macrophages from C57BL/6 и BALB/c mice strains did not differ with their reprogramming capacity. In general, our results allow of extending present knowledge about a role of environmental factors in regulation of macrophage activities.