Репозиторий Университета

© 2018. A strain B-13176 that manifested the antibacterial and fungicidal activities has been isolated by screening of sporiferous bacteria and identified as Bacillus pumilus on the basis of the analysis of variable regions of 16S RNA sequences. Cultural and morphological characteristics of the strain were studied, the dynamics of the synthesis of fungicidal and antibacterial metabolites and their location in culture were determined, and their resistance to physicochemical factors was investigated. It was shown that the strain possesses a pronounced activity against the fungi of Aspergillus niger and the methycillinresistant bacteria of Staphylococcus aureus strain (MRSA). The culture liquid of the strain was fractioned using centrifugation, ultrafiltration, extraction and HPLC. Mass-spectrometry was used to show that the Bacillus pumilus B-13176 strain produces active thermostable protease-resistant metabolites of the peptide origin that are located in the CL pellet (the fungicidal component) and in the CL supernatant (the antibacterial component).

© 2018 Paediatrician Publishers, LLC. All rights reserved. Background: Moscow and St. Petersburg are cities of federal significance with the largest number of children and consequently a large number of primary patients identified annually. Objective: Our aim was to analyze the main indicators characterizing the delivery of medical care for children with cancer in cities of federal significance. Methods: The operative reports for 2013–2017 of the Department of Health of Moscow, the Ministry of Health of the Moscow Region, the Health Committee of the Government of St. Petersburg, and the Health Committee of the Leningrad Region were analyzed. Results. In 2013–2017 in the Russian Federation, 18 090 primary patients were identified, 2734 (15.1%) of them in the analyzed subjects: in Moscow — 1315 (7.3%), in the Moscow Region — 492 (2.7%), in St. Petersburg — 697 (3.9%), in the Leningrad Region — 230 (1.3%). For 5 years, the number of primary patients increased in Moscow by 18.1%, in St. Petersburg — by 36%, in the Leningrad Region — by 2.5%. In the Moscow Region, the number of primary patients decreased by 2.3%. The incidence in Moscow increased by 5.3% (from 11.3 per 100 000 of children aged 0–17 in 2013 to 11.9 in 2017), in St. Petersburg — by 18.1% (from 14.9 in 2013 to 17.6 in 2017). The incidence in the Moscow Region fell by 20% (from 11.8 in 2013 to 9.4 in 2017), in the Leningrad Region by 4.9% (from 14.4 in 2013 to 13.7 in 2017). Mortality in 2016–2017 in Moscow decreased by 37.5% (from 6.4 per 100 thousand children’s population 0–17 years to 4), in the Moscow Region — by 50% (from 2 to 1), in St. Petersburg increased by 50% (from 2 to 3), in the Leningrad Region — by 12.5% (from 2.4 to 2.7). The one-year mortality rate in Moscow increased by 3.7% (from 8.3% in 2016 to 12% in 2017), in the Moscow Region — by 3.5% (from 5.4 to 8.9% %), in St. Petersburg — by 3.9% (from 2.5 to 6.4%). In the Leningrad Region, the one-year mortality rate decreased from 6.5% in 2016 to 0 in 2017. The number of pediatric oncological beds did not change in the Moscow Region (0.4 per 10,000 children aged 0–17 years), St. Petersburg (0.9), and the Leningrad Region (0). In Moscow and St. Petersburg patients were not identified actively in 2016–2017; in the Moscow Region, their percentage decreased from 34.2 to 7.3, in the Leningrad Region — from 8.7 to 0. In Moscow, the number of pediatric oncological beds increased by 50% (from 0.6 to 0.9). The number of oncologists increased in the Moscow Region from 0.009 per 10 000 children aged 0–17 years to 0.06 (66.7%), in St. Petersburg from 0.09 to 0.12 (+33.3%), in the Leningrad Region — from 0 to 0.03. In Moscow, the number of pediatric oncologists decreased from 0.13 to 0.11 (-15.3%). Conclusion: Defects of statistical data were revealed. Patients were not identified during routine preventive examinations which indicate a low oncologic alertness of district pediatric physicians. Delivery of medical care for children with cancer and the statistical data accumulation procedures should be improved.

Copyright © 2018 Levitskii et al. The processes of association and dissociation of ribosomal subunits are of great importance for the protein biosynthesis. The mechanistic details of these processes, however, are not well known. In bacteria, upon translation termination, the ribosome dissociates into subunits which is necessary for its further involvement into new initiation step. The dissociated state of the ribosome is maintained by initiation factor 3 (IF3) which binds to free small subunits and prevents their premature association with large subunits. In this work, we have exchanged IF3 in Escherichia coli cells by its ortholog from Saccharomyces cerevisiae mitochondria (Aim23p) and showed that Yeast protein cannot functionally substitute the bacterial one and is even slightly toxic for bacterial cells. Our in vitro experiments have demonstrated that Aim23p does not split E. coli ribosomes into subunits. Instead, it fixes a state of ribosomes characterized by sedimentation coefficient about 60S which is not a stable structure but rather reflects a shift of dynamic equilibrium between associated and dissociated states of the ribosome. Mitochondria-specific terminal extensions of Aim23p are necessary for “60S state” formation, and molecular modeling results point out that these extensions might stabilize the position of the protein on the bacterial ribosome.

© 2018, Media Sphera Publishing Group. All rights reserved. The objective of the present work was the immunohistochemical evaluation of the age-related dynamics of apoptosis-associated proteins contained in the human skin epidermis. We studied the samples of skin tissues obtained during the forensic medical expertises of 100 corpses of the subjects who died in the consequence of acute blood loss in the absence of injuries or pathological changes in the skin (56 men and 44 women at the age varying from 5 to 85 years). The results of this study give evidence that the histoimmunological investigations of the skin tissues can be carried out with the use of the mmunohistochemical Ki67, bcl-2, and p53 markers for the more accurate determination of the biological age of the deceased subjects. The quantitative characteristics thus obtained serve as reliable indicators of the chronic changes in the skin and can be used as the components of the combined diagnostic procedures.

© 2018 Media Sphera Publishing Group. All rights reserved. Prolyl-4-hydroxylases of hypoxia-inducible factor (HIF-P4Hs) are enzymes that, under the conditions of normoxia, cause degradation of the HIF-transcriptional protein, which regulates a number of metabolic processes, including erythropoiesis, glucose level and lipid metabolism. In hypoxic conditions, on the contrary, their activity is suppressed and HIF stabilization takes place. This mechanism, i.e. stabilization of HIF by inhibition of HIF-P4Hs was the basis for the development of drugs designed for treatment of renal anemia, which are currently in stages 2 and 3 of clinical trials and are showing encouraging results. Recently, it has also been reported that inhibition of HIF-P4Hs can be effective in treatment of cardiometabolic diseases - coronary heart disease, hypertension, obesity, metabolic syndrome, diabetic cardiomyopathy and atherosclerosis. The review, based on the most recent data, discusses in detail molecular mechanisms of therapeutic effect of HIF-P4Hs inhibition in these pathological conditions and provides evidence that these mechanisms are associated with HIF stabilization and gene expression, improving perfusion and endothelial function, reprogramming metabolism from oxidative phosphorylation to anaerobic glycolysis, reducing inflammation and having beneficial effect on the innate immune system.

© 2018 Bentham Science Publishers. Background: Nitroproston is a novel prostaglandin-based compound modified by NO-donating groups with potential application in obstructive respiratory diseases such as asthma and obstructive bronchitis. Nitroproston has been extensively studied using various pharmacological models. Its biological stability is still uncertain. Objective: The aim of the present study was to evaluate Nitroproston stability in vitro, as well as to identify and characterize its major biodegradation products. Methods: The principal biodegradation products of Nitroproston were identified in vitro using liquid chromatography/ion trap – time-of-flight mass-spectrometry. The postulated structure of metabolites was confirmed using authentic reference standards. Rat, rabbit and human plasma and human whole blood samples were used for comparative in vitro degradation study. Nitroproston and its biodegradation products in biological samples were measured by liquid chromatography/triple –stage quadrupole mass spectrometry. Results: Nitroproston is rapidly hydrolyzed in rat plasma to generate glycerol-1,3-dinitrate and prostaglandin E2 . The latter can undergo conversion to cyclopentenone prostaglandins A2 and B2 . Thereby less than 5% of the parent compound was observed in rat plasma at the first moment of incubation. A similar pattern was observed for rabbit plasma where half-life (T1/2) of Nitroproston was about 2.0 minutes. Nitroproston biodegradation rate for human plasma was the slowest (T1/2 = 2.1 h) among tested species, occurred more rapidly in whole blood (T1/2 = 14.8 min). Conclusion: It was found that Nitroproston is rapidly hydrolyzed in rodent compared to human plasma incubations. Whereas Nitroproston is relatively stable in human plasma an enhanced hydrolytic activity was observed in whole human blood incubations. Extensive metabolism of Nitroproston in human whole blood was mainly associated with red blood cells. The observed interspecies variability highlights the need of suitable animal model selection for Nitroproston follow-up PK/PD studies.

© Bionika Media Ltd. Objective. To determine the expression level of the genes encoding the paraoxonase family enzymes (PON1, PON2, and PON3) in the placentas of women with uncomplicated pregnancy and in the development of preeclampsia Materials and methods. The investigation enrolled 26 pregnant women aged 24 to 35 years, including 14 women with normal pregnancy and 12 with preeclampsia. The expression of the PON1, PON2, and PON3 genes was analyzed by real-time PCR using the primers specific to these genes. Results. Women whose pregnancy was complicated by preeclampsia showed a significant decrease in the placental expression of the PON2 gene. The lowest PON2 gene expression was found in the placentas of women with severe preeclampsia. There were no significant differences in the placental expression level of the PON1 and PON3 genes in women with preeclampsia compared to healthy women. Conclusion. In women with preeclampsia, the placental PON2 gene expression decreases; however, the expression level of the PON1 and PON3 genes does not differ from that of the PON1 and PON3 genes in the placentas of patients with physiological pregnancy. The placental expression of the PON2 gene depends on the severity of preeclampsia; is lower in severe preeclampsia than in moderate preeclampsia.

© 2018 SPIE. The technology of cell 3D scaffolds laser fabrication is developed. 3D scaffolds are designed to repair osteochondral defects, which are poorly restored during the organism's life. The technology involves the use of an installation, the laser beam of which moves along a liquid nanomaterial and evaporates it layer by layer. Liquid nanomaterial consists of the water-protein (collagen, albumin) suspension with carbon nanoparticles (single-walled carbon nanotubes). During laser irradiation, the temperature in the region of nanotubes defects increases and nanotubes are combined into the scaffold. The main component of installation is a continuous laser operating at wavelengh of 810 nm. The laser beam moves along 3 coordinates, which makes it possible to obtain samples of the required geometric shape. The internal and surface structure of the samples at the micro- A nd nanoscale levels were studied using the X-ray microtomography and scanning electron microscopy. In vitro studies of cell growth during 48 and 72 hours demonstrated the ability of cell 3D scaffolds to support the proliferation of osteoblasts and chondroblasts. Using fluorescence and atomic force microscopy, it was found that the growth and development of cells on a sample with a larger concentration of nanotubes occurred faster compared to samples with a smaller concentration of nanotubes.

© 2018 Medical Education. All rights reserved. The article provides a review on prevalence, phenotypes, endotypes, and the control of severe bronchial asthma. Severe asthma is a widespread, heterogeneous disease that affects 5 - 20% of patients with bronchial asthma. Prevalence of severe asthma in Russia significantly exceeds the official statistics data, therefore it is necessary to maintain a national register of patients with severe asthma. The conventional therapy for severe asthma is not always effective due to the uncontrolled course of the disease and eosinophilic airway inflammation. The identification of asthma phenotype/endotype is reasonable to develop a personalized approach to treatment. This approach allows to achieve better control of the disease and to minimize the risk of asthma exacerbations, fixed airway obstruction and adverse effects of the pharmacological therapy. The main changes in the Global Strategy for Asthma Management and Prevention (GINA, 2018) concerning severe asthma therapy are highlighted in this article. It is also emphasized that the use of monoclonal IL-5 and IgE-antibodies could contribute to successful treatment of patients with uncontrolled severe asthma. Currently, two immunobiological drugs have been registered in Russia, omalizumab (anti-IgE antibody) and reslizumab (anti-IL-5 antibody).

© 2018 ABV-Press Publishing House. All rights reserved. Modern anticancer therapy due to its intensity and molecular biology orientation allows achieving higher efficiency and theoretically reducing the incidence of complications. However, the increase in efficacy in the modern oncology really exists, but reducing complication frequency, unfortunately, is far from being solved. In many respects the problems of diagnosis, treatment and complications monitoring are associated with the impact on the complex physiological processes occurring in oncological patient. Timely implementation of modern and adequate programs for the prevention and treatment of these complications defines the concept of "supportive therapy", which provides at least half the effectiveness of antitumor treatment. To date, according to most studies, the most frequent complications of antitumor therapy are hematologic, in particular - anemia. In clinical practice, blood transfusions, recombinant human erythropoietins, hemopoiesis stimulating cofactors are used to correct this type of complications. The need for anemia treatment is determined by its negative impact on quality of life, as well as a negative prognostic impact on the life expectancy of cancer patients, because hypoxia of tumor tissue can be associated with resistance to chemo- and radiation therapy, the stimulation of genetic mutations and neoangiogenesis, which make it difficult to control of tumor growth. In numerous studies using multivariate analysis confirmed the association of low hemoglobin levels and/or tumor tissue hypoxia with worsening prognosis and overall survival in many types of tumors. The modern anemia treatment should not be determined only by increased in hemoglobin level, but should be considered as an active prophylaxis for its reducing. Recombinant forms of human erythropoietin and intravenous forms of iron preparations should be the most popular correction methods in everyday practice. The high cost of complex anemia therapy and the social significance of oncological diseases necessitate a pharmaco-economic analysis of registered in Russia erythropoietin preparations and the optimization of existing anemia treatment regimens in cancer patients in order to reduce the expenditures of the health budget. At present, an active import substitution program is underway in the Russian Federation to support the development of the Russian pharmaceutical industry and provide the population with more affordable medicines while maintaining its quality and efficiency. The need to address these issues, and the effective use of the domestic biological analogue epoetin alfa, served as an excuse for performing a comparative clinical and economic analysis. They were selected drugs that differ in pharmacokinetic properties: Eralfon® - analogue of epoetin alfa and Aranesp® - darbepoetin alfa. The treatment model of adults oncological patients with anemia receiving chemotherapy was created, which takes into account various therapies using erythropoietin preparations. The total therapy cost for an oncological patient with anemia is less when using short-acting erythropoietin - epoetin alfa - 131 609 rubles in comparison with the long-acting erythropoietin - darbepoetin alfa - 245 159.2 rubles, the difference was 113 550.2 rubles (-46 %) in favor of the epoetin alfa. According to pharmaco-economic analysis, the treatment of anemia with a Russian-produced drug epoetin alfa (Eralfon®) is preferred in comparison to darbepoetin alfa (Aranesp) in adult cancer patients with nonmyeloid malignancies in the Russian Federation, as it allows increasing the number of treated patients at a cost reduction.

© 2018 Media Sphera Publishing Group. All rights reserved. Objective. To clarify the association between HLA-DRB1 and TNFα (-308G>A) genes polymorphism and joint destruction/further progression during 12 months of the follow-up period (FUP) in patients with early (<6 months), active, predominantly antibodies to cyclic citrullinated peptide (ACCP) and rheumatoid factor (RF)-positive rheumatoid arthritis (RA) treated according to "Treat to target" strategy. Materials and Methods. The study included 85 patients with early RA and duration of symptoms <6 months. All patients were initially assigned to subcutaneous methotrexate (MTX) with rapid dose escalation to 20-25 mg/week. Combination MTX + biological therapy, mainly adalimumab, was used when MTX was ineffective. Joint destruction was assessed by Sharp-Van der Heijde modification scoring method at baseline and after 12 months FUP. Real time polymerase chain reaction (PCR-RT) was used for TNFα gene polymorphism (-308G>A) genotyping. Low resolution PCR-RT with subsequent sequence-based typing of ∗04 were performed to study HLA-DRB1 gene polymorphism. The HLA-DRB1∗01, ∗04:01, ∗04:04, ∗04:05, ∗04:08, ∗10 alleles were categorized as SE+ (Shared Epitope) alleles. Results. As for TNFα gene polymorphism, it was demonstrated that the number of narrowings and total Sharp score values were almost twice as high at baseline in GG genotype carriers as compared to GA genotype carriers (ρ<0,005, and ρ<0,004 respectively). Similar association was found after 12mo FUP. The progression of joint destruction, assessed as the change (Δ) in the number of erosions, joint space narrowings and the total score, was statistically significantly associated with HLA-DRB1∗(SE) genotypes: The carriers of SE (SE+/SE+) double-dose had more advanced progression as compared to (SE+/SE-)/(SE-/SE-) carriers (ρ<0,028, ρ<0,019, ρ<0,035 respectively). Conclusion. Our data suggest that HLA-DRB1 (SE+) gene and TNFα (-308G>A) polymorphisms are associated with the progression of radiographic joint destruction in early, active RA patients managed according to "Treat to target" stratagy.

© 2018 Vserossiiskoe Obshchestvo Kardiologov. All rights reserved. The article is focused on a broad evidence of antihypertension efficacy of perindopril and bisoprolol. The issues considered, of the drugs usage in patients with arterial hypertension, ischemic heart disease and chronic heart failure according to the international and local clinical guidelines. Special attention is paid for the influence of perindopril and bisoprolol on prognosis - the risk of cardiovascular complications from the evidence based medicine perspective. The data provided on a novel unique combination of these medications, and the benefits are accounted, as the mechanism of complimentary interaction; the results of randomized trials, clinical trials provided, that point on the high potential of this sort of combinational treatment.

© 2018, Slovenska Vzdelavacia Obstaravacia. All rights reserved. The approach to studying society in the postmodernist framework is relevant to understand postmodernist paradigm in contemporary philosophy. The rapid development of computerization and mass media in postmodern culture has been destroying the quality of human interaction with the surrounding environment and social reality, causes a feeling of losing touch with reality. This is due to the emergence of many virtual realities. The purpose of the article is to analyze the anthropological ideas in the philosophy of postmodernism. Postmodern anthropology is realized not only in the context of scientific revolution and internal form of culture but also as self-consciousness of modern civilization. Postmodernists prefer to discuss human beings as not whole self-contained individuals, units that may be broken down (divided), and call them ‘dividuals,’ beings or persons significantly distinct from their modern descendants, this being the best characteristic of the modern social state and contrasting to a Cartesian tradition. Methodologically the article is based on a systematic approach combining structural-functional, dialectical and hermeneutical methods. This approach allows us to reveal essential aspects of postmodern philosophy in their dialectical interrelation, to overcome constraints inherent in the heuristic potential of certain methodologies. The survey covers issues related both directly to the field of general theoretical postmodern philosophy and social sciences and makes a review on the researches on the human identity in the postmodern era. The analysis conducted made it possible to distinguish the main characteristics of postmodernism. The main intention of postmodernism considered is the crushing criticism of traditional values: humanism, rationalism, radicalism towards social structure and development, its rejection, denial of individuals' ability to be responsible for their actions, their inability to resist the power of supranational structures.

© 2018 Society for Industrial and Applied Mathematics. In this paper, we study a new numerical method for the solution of partial differential equations on evolving surfaces. The numerical method is built on the stabilized trace finite element method (TraceFEM) for the spatial discretization and finite differences for the time discretization. The TraceFEM uses a stationary background mesh, which can be chosen independent of time and the position of the surface. The stabilization ensures well-conditioning of the algebraic systems and defines a regular extension of the solution from the surface to its volumetric neighborhood. Having such an extension is essential for the numerical method to be well defined. The paper proves numerical stability and optimal order error estimates for the case of simplicial background meshes and finite element spaces of order m \geq 1. For the algebraic condition numbers of the resulting systems we prove estimates, which are independent of the position of the interface. The method allows that the surface and its evolution are given implicitly with the help of an indicator function. Results of numerical experiments for a set of 2D evolving surfaces are provided.

© Team of authors, 2018. The article describes the clinical case of subacute myocarditis in a child with an outcome in dilated cardiomyopathy, complicated with congestive heart failure. Difficulties in diagnosing the disease that manifested with cardiac arrhythmia are discussed. The main signs suggesting postmiocardic cardiomyopathy included a reduced deflection voltage and frequent ventricular extrasystoles with episodes of the ventricular tachycardia in the onset of the disease, left ventricular dilatation, a significant decrease in ejection fraction, increased activity of natriuretic peptide, findings of perfusion scintigraphy and magnetic resonance imaging. Medical therapy and implantation of a cardioverter defibrillator were ineffective. The child repeatedly suffered from syncopal conditions with circulatory arrest, which required resuscitation. Due to the ineffectiveness of drug therapy conducted in the leading federal centres, considering cardiac transplantation abroad was recommended.

© 2018, Dynasty Publishing House. The assessment of thrombosis and bleeding risks is one of the most important tasks of laboratory diagnostics of disorders in the hemostasis system. For this purpose the highly specialized tests are not always appropriate, because these assays are focused on specific markers or pathologies of individual links: the level of coagulation factors, the level of D-dimers, ADP- and serotonininduced platelet activation, effects of acetyl salicylic acid on aggregation. Nowadays, integral assays are the most promising approach, simulating hemostatic process in vivo - thromboelastography, thrombodynamics, thrombin generation. These tests are designed to specify the risk of thrombosis or bleeding with co-origin, as well as screening and monitoring of drug therapy. One of the approaches in the development of integral assays are flow systems where plasma or whole blood flow is formed over the hemostatic activator, and the growth of the thrombus is recorded on the video. There are commercially available samples of such devices, and some experience of its application in clinic. However, there are no uniform standards and clinical guidelines. This review describes examples of flow chambers exploitation for diagnosis, existing problems of its usage and the opportunities that it can provide to the clinicians.

© 2018 Dynasty Publishing House. All rights reserved. The objective. To study the level of knowledge of paediatricians on problems of antimicrobial therapy of respiratory tract infection with determination and analysis of the most common mistakes. Materials and methods. In 2016-2017, knowledge of antimicrobial therapy of respiratory tract infections in children was tested among 238 paediatricians in five cities (Yekaterinburg, Kirov, Novosibirsk, Surgut, Ufa). Testing included twenty stem questions composed according to modern clinical guidelines. Five answer choices were offered to each question, of which one or several were correct. Assessment of the results took into account both chosen and unchosen answers (maximally possible score was 100). The result of 91-100 scores was assessed as «excellent », 81-90 - «good», 71-80 - «satisfactory», 70 and less - «unsatisfactory». Results. The average score was 70.5. In different cities the average score was as follows: in Yekaterinburg - 71.7, in Kirov - 73.8, in Novosibirsk - 74, in Surgut - 69.3, in Ufa - 63.5. Only one physician's answers were assessed as «excellent» (0.42%), answers of 40 physicians were «good» (16.81%), 88 answers - «satisfactory» (36.97%) and 109 answers - «unsatisfactory» (45.8%). Conclusion. The study has shown insufficient knowledge of paediatrician on problems of antimicrobial therapy of respiratory tract infections. These data may be used in preparing educational programmes for physicians.

© 2018 SPIE. We have proposed a concept of monitoring ice ball formation in biological tissues during cryodestruction process via spatially-resolved detection of elastic light backscattering. For this purpose, we developed an experimental setup for study cryodestruction by using applicators based on sapphire shaped crystals with internal channels for optical irradiation of biotissues and detection of backscattered light. Due to the unique physical properties of sapphire, i.e. high thermal, mechanical, and chemical strength, high thermal conductivity and optical transparency, the sapphire cryoapplicators yield combination of the tissue cryodestruction with the optical control of tissue freezing. We have shown experimentally that using the proposed concept of applicator with several channels, it is possible to monitor changes of the ice ball during the cryodestruction process.

© 2018 Russian Transplant Society. All rights reserved. Aim: To develop an optimal surgical tactic for implantation of "AVK-N" system as a "bridge" to heart transplantation. Materials and methods. 17 patients were included. They were operated in the period from 2012 to October 2017 in Federal State Budgetary Institution V.I. Shumakov National Medical Research Center of Transplantology and Artifi cial Organs. A tiny implantable system Portable device for assisting cardiac circulation (AVK-N; Russia) was used for replacing the pumping function of the left ventricle. All patients were examined according to the program of potential recipients for heart transplantation, before the applying of prolonged mechanical circulatory support. Among the operated patients there were 16 (94.1%) men and 1 (5.9%) woman, the average age was 52.64 ± 10.56 (from 33 to 67 years). All patients had congestive heart failure III-IV functional class according to NYHA, refractory to optimal drug therapy. Heart failure was triggered by dilated cardiomyopathy in 12 (70,58%) cases, and by postinfarction systolic dysfunction of the left ventricle in 5 (29,42%). Implantation of AVK-N system was performed to potential recipients of the donor heart with terminal stage of CHF with a decrease in LV ejection fraction up to 10%. Results. As a result of this study there were developed several technological aspects facilitating the subsequent heart transplantation. Conclusion. Our experience in optimizing the surgical tactics of the "AVK-N" system implantation as a bridge to heart transplantation, demonstrated the possibility and safety of its active use in both patients with terminal heart failure on the waiting list of heart transplantation and patients having temporary contraindications to HTX.

© 2018 Izdatel'stvo Meditsina. All rights reserved. Results of investigation of the analgesic activity of the natural recombinant peptide PT1, which specifically binds to P2X3 receptors, are presented. The test for hypersensitivity provoked by complete Freund's adjuvant (CFA) showed evidence of the analgesic activity of PT1 peptide in CD-I mice after single intravenous administration in a dose range of 0.01-1 mg/kg.