DAILY CHANGES OF CENTRAL HEMODYNAMICS IN PATIENTS WITH CHRONIC HEART FAILURE WITH NIGHT-TIME DYSPNOEA ATTACK

Aim. To study daily changes of central hemodynamics (CHD) in patients with chronic heart failure (CHF) and the effects of therapy. Materials and methods. 22 patients with ischemic heart disease and CHF of III-IV functional class (FC) by NYHA, age 60,5±10,5 were observed. Patients were suffering from night-time dyspnoea attacks and had pulmonary artery occlusion pressure (PAOP) 15-20 mm Hg. CHD was monitored invasively before the treatment and after 4 weeks of CHF treatment. Results. According to the cardiac index (CI) at admission patients were split into two groups. 9 patients of group-I had CI ≤2,15 l\min\m2, and 13 patients of group-II had CI >2,15 l\min\m2. In patients of group-I CI increased in 4 weeks of treatment. The treatment caused considerable clinical improvement in all patients. The CHD indexes also improved. Initially evening-night-time peaks of PAOP (р≤0,002), systolic (SBP) (р≤0,003), diastolic (DBP) (р=0,002) and average (BPa) (р=0,0007) blood pressure (BP) as well as double multiplication (DM) (р≤0,008) were registered in patients of group-I. At the end of treatment only evening-night increase in DBP (р=0,002) and BPa (р≤0,006) were noted. In patients of group-II after 4 weeks of treatment CI decreased or didn’t change. Towards 28-th day of treatment 10 patients had clinical improvements. Only one patient’s FC NYHA increased. At the end of treatment the normalization of CHD was registered totally in group. Initially evening-night-time peaks of PAOP (р≤0,002), SBP (р≤0, 0001), CI (р=0,057) and DM (р=0,084) were registered in patients of group-II. At the end of treatment evening-night-time peaks of PAOP (р≤0,015), SBP (р≤0,044), CI (р≤0,005) and DM (р≤0,044) still remained. Besides, evening-night-time peaks of cardiac output (р≤0,01) and systolic index (р≤0, 06) have added. Conclusion. In patients with CHF with initial CI ≤2,15 l\min\m2 treatment results in the normalization of CHD and its daily rhythm. In patients with CHF with initial CI >2,15 l\min\m2 the treatment leads to the normalization of CHD, though it doesn’t correct daily rhythm disturbances of circulation

Функциональные свойства гальванических сплавов Fe−Mo и Fe−Mo−W

The influence of the modes of electrodeposition on the morphology, topography, and structure of the galvanic alloys of iron with molybdenum and tungsten is discussed. It is shown that the increase in the corrosion resistance of Fe–Mo and Fe–Mo–W coatings in acid and neutral chloride-containing media is caused both by the elevation of their passivating ability caused by the process of alloying components and by the formation of globular surfaces with homogeneous chemical composition. The microhardnesses of Fe–Mo and Fe–Mo–W galvanic alloys prove to be 2–3 times higher than the microhardnesses of the substrates made of low-alloy steel, which can be explained by the formation of amorphous structures. The results of investigations and tribological tests show that it is reasonable to apply the coatings of double and triple iron alloys in order to reduce wear in friction couples and to increase the corrosion resistance and mechanical strength of the surfaces, which makes them promising for the repair and restoration technologies.Изучено влияние методов электроосаждения на морфологию, топографию и структуру гальванических сплавов железа с молибденом и вольфрамом. Показано, что рост коррозионной стойкости покрытий Fe–Mo и Fe–Mo–W в кислых и нейтральных хлоридсодержащих средах обусловлен увеличением их способности к пассивации в присутствии легирующих компонентов и формированием глобулярной равномерной по составу поверхности. Микротвердость гальванических сплавов Fe–Mo и Fe–Mo–W возрастает в 2-3 раза по сравнению с показателем подложки из низколегированной стали за счет формирования аморфной структуры. Результаты исследований и трибологических тестов показали целесообразность применения двойных и тройных сплавов железа для снижения износа в парах трения и увеличения коррозионного сопротивления и механической прочности поверхностей, что делает их привлекательными для технологий восстановления и упрочнения поверхностей

Cкринінг діуретичної активності в ряду нових похідних оксамінових кислот

The screening study of oxamic acid derivatives and their influence on the excretory function of the kidneys in Wistar white rats under conditions of water load has been carried out. The compounds under research are white crystalline substances of the basic character, odourless, with a distinct melting point, soluble in polar organic solvents and mineral acids. The structure and purity of the substances studied have been confirmed by modern physicochemical methods of elemental, IR and PMR spectral, chromatographic analysis and qualitative reactions. The analysis of the effect of these substances on the excretory function of the kidneys have been carried out on white male rats by the method of E.B. Berkhin using a number of animals with 7 rats in each group. The activity of the compounds studied was compared with the activity of well-known drugs – hypothiazide, furosemide and adiurecrine. A number of compounds caused decrease in urine output in animals. The diuretic activity of the compounds was influenced by the chemical characteristics of the substituent and its location. As a result of the research performed substances increasing diuresis with the diuretic activity exceeding that of the reference medicine – hypothiazide – have been found. Substituted amides of arenesulphonyloxamic acid are a promising group of compounds for further pharmacological study with the aim of development of new medicines with the diuretic activity on their basis.Проведены скрининговые исследования производных оксаминовых кислот и их влияния на выделительную функцию почек у белых крыс линии Вистар в условиях водной нагрузки. Исследуемые соединения представляют собой белые кристаллические вещества основного характера без запаха, с четкой температурой плавления, растворимые в полярных органических растворителях и минеральных кислотах. Строение и чистота исследуемых веществ подтверждены современными физико-химическими методами элементного, ИК-, ПМР-спектрального, хроматографического анализов и качественными реакциями. Изучение влияния данных веществ на выделительную функцию почек проводили на белых крысах-самцах по методу Е.Б.Берхина, использовали серии животных по 7 крыс в каждой группе. Активность исследуемых соединений сравнивали с активностью хорошо известных лекарственных средств – гипотиазида, фуросемида и адиурекрина. В результате проведенных исследований выявлены вещества, вызывающие увеличение диуреза, превышающие по диуретической активности эталонный препарат сравнения гипотиазид. Ряд соединений вызывал уменьшение диуреза у животных. На диуретическую активность изучаемых соединений влияла как химическая особенность заместителя, так и его расположение. Замещенные амиды аренсульфонилоксаминовых кислот являются перспективной группой соединений для дальнейшего фармакологического изучения с целью создания на их основе лекарственных препаратов с диуретическими свойствами.Проведені скринінгові дослідження похідних оксамінових кислот та їх впливу на видільну функцію нирок у білих щурів лінії Вістар в умовах водного навантаження. Досліджувані сполуки являють собою білі кристалічні речовини основного характеру без запаху, з чіткою температурою плавлення, розчинні в полярних органічних розчинниках, мінеральних кислотах. Будова та чистота досліджуваних речовин підтверджені сучасними фізико-хімічними методами елементного, ІЧ-, ПМР-спектрального, хроматографічного аналізів та якісними реакціями. Вивчення впливу даних речовин на видільну функцію нирок проводили на білих щурах-самцях за методом Є.Б.Берхіна, використовували серії тварин по 7 щурів у кожній групі. Активність сполук, які досліджувались, порівнювали з активністю добре відомих лікарських засобів – гіпотіазиду, фуросеміду та адіурекрину. В результаті проведених досліджень виявлені речовини, які викликають збільшення діурезу, що перевищує по діуретичній активності еталонний препарат порівняння – гіпотіазид. Ряд сполук викликав зменшення діурезу у тварин. На діуретичну активність сполук, що вивчались, впливала як хімічна особливість замісника, так і його розташування. Заміщені аміди аренсульфонілоксамінових кислот є перспективною групою сполук для подальшого фармакологічного вивчення з метою створення на їх основі лікарських препаратів з діуретичними властивостями

ДОСВІД РОБОТИ СИМУЛЯЦІЙНОГО ЦЕНТРУ ВІННИЦЬКОГО НАЦІОНАЛЬНОГО МЕДИЧНОГО УНІВЕРСИТЕТУ: ПІДСУМКИ ТА ПЕРСПЕКТИВИ

The aim of the work – to highlight the experience of M. Pyrohov Vinnytsia National Medical University in the field of stimulation medicine and conduct an objective structured clinical examination. The main body. Structured simulation programs are extremely useful in those areas of medicine where many very dangerous manipulations – obstetrics, anesthesiology, urgent and intensive care, surgery or pediatrics, for training personnel, work on improving existing clinical protocols and practical algorithms and/or approbation of organizational factors in dealing with urgent situations. The leading healthcare organizations have recommended the following standards of medical care that make simulation training Employees of the symulation center of M. Pyrohov Vinnytsia National Medical University used for simulation training in medicine: an objective structured clinical examination (OSCE/OSCE’s) designed to test competencies and implement practical skills such as communication, clinical examination, medical manipulation/appointment, appointment of exercises, etc. It consists of real or “false” patients (patient actors), passing through several points, each of which has its examiner and allocated a certain time. Before and after conducting such an examination, we held a briefing and debriefing Conclusions. The training of specialists who in future are called to be responsible for the life and health of people, in particular in critical situations, is impossible without training skills in stimulation centers. Recently, the interest in simulation medical training in Ukraine has increased significantly. Equipment appears, new training centers open. In order to fully utilize the potential of simulation training, it is important to adhere to an effective methodology, to establish cooperation between the simulation centers and to provide appropriate training for teachers capable of organizing the learning process in the light of modern European experience.Мета роботи – висвітлити досвід Вінницького національного медичного університету ім. М. І. Пирогова в галузі симуляційної медицини та проведенні об’єктивного структурованого клінічного іспиту. Основна частина. Структуровані програми симуляційного навчання надзвичайно корисні в тих галузях медицини, де виконується багато дуже небезпечних маніпуляцій – в акушерстві, анестезіології, ургентній та інтенсивній терапії, хірургії або педіатрії, для навчання персоналу, роботи з удосконалення чинних клінічних протоколів та практичних алгоритмів та/або апробації організаційних чинників у веденні ургентних ситуацій. Провідні організації охорони здоров’я порекомендували такі стандарти медичної допомоги, які змушують запроваджувати симуляційне навчання. Співробітники симуляційного центру ВНМУ ім. М. І. Пирогова  використовують для симуляційного навчання в медицині: проведення об’єктивного структурованого клінічного іспиту (ОСКІ/OSCE’s), призначеного для перевірки компетенції та виконання практичних навичок, таких, як комунікація, клінічне обстеження, медичні маніпуляції/призначення, призначення вправ тощо. Його складають з реальними або «удаваними» пацієнтами (пацієнтами-акторами), проходячи через декілька пунктів, на кожному з яких є свій екзаменатор та виділено певний час. До та після проведення такого іспиту ми проводили брифінг та дебрифінг. Висновки. Підготовка фахівців, які у майбутньому покликані відповідати за життя та здоров’я людей, зокрема у критичних ситуаціях, не можлива без відпрацювання навичок у симуляційних центрах.  Останнім часом зацікавленість щодо симуляційного медичного навчання в Україні значно зростає. З’являється обладнання, відкриваються нові навчальні центри. Щоб повною мірою використати потенціал симуляційного навчання, важливо дотримуватися ефективної методології, налагодити співпрацю між симуляційними центрами та належну підготовку викладачів, здатних організувати навчальний процес з урахуванням сучасного європейського досвіду

Reconstructive interventions in thoracic surgery using titanium nickelide implants

The original techniques of bronchus stump closure, modeling and disjunction of non-neoplastic tracheoesophageal fistula, replacement of postresectional defects of the trachea, pericardium, diaphragm and the thoracic wall using titanium nickelide implants have been developed and tested. It was ascertained that these methods were highly effective and simplified and standardized surgical procedures, provided anatomic and physiologic reconstruction of the injured area

Nomenclatural standards and genetic passports of potato cultivars bred by the Tatar Research Institute of Agriculture «Kazan Scientific Center of the Russian Academy of Sciences»

Breeding of potato cultivars adapted to the climatic conditions of the Middle Volga region and resistant to various harmful organisms has always been an urgent task for breeders of the Tatarstan Republic. In the present paper, the potato cultivars bred at the Tatar Research Institute of Agriculture – Kazan Scientific Center of the Russian Academy of Sciences, were taken as an example for demonstrating the results of application and elaboration of methodological approaches that are currently developed at the N.I. Vavilov Institute of Plant Genetic Resources (VIR) for the preparing of nomenclatural standards and their genotyping. At the initiative of the VIR researchers in collaboration with the authors of potato cultivars E.A. Gimaeva and Z. Stashevski plant material was collected and nomenclatural standards for potato cultivars bred at the Kazan Scientific Center of the Russian Academy of Sciences were prepared. Four nomenclatural standards for Tatarstan potato cultivars (‘Zumba’, ‘Kortni’, ‘Reggi’, ‘Samba’) were prepared in accordance with the provisions of the International Code of Nomenclature For Cultivated Plants, registered in the VIR Herbarium Database, and transferred to the VIR herbarium type collection. Besides, voucher specimens of cv. ‘Tango’ and breeding clone ‘Sal’sa’, which is undergoing the State Variety Test at present, were produced. Genetic passports of Tatarstan varieties (‘Zumba’, ‘Kortni’, ‘Reggi’, ‘Samba’) and one breeding clone (‘Sal’sa’)* were developed using DNA samples from plant material transferred by the authors of the cultivars to the VIR herbarium. The genetic passports include information of the polymorphism of eight chromosome-specific microsatellites, data on the presence/ absence of the diagnostic fragments of 15 markers of the 11 R-genes conferring resistance to various harmful organisms and the information about cytoplasm types. A comparison of the data from genetic passports developed using DNA samples from nomenclatural standard specimens with the results of genotyping of 22 samples of Tatarstan cultivars obtained from different sources (e.g., samples undergoing ecogeographic tests within the framework of the Comprehensive Research Plan of the subprogram “Development of potato breeding and seed production in the Russian Federation”; as well as accessions from the VIR in vitro collection) made it possible to assess the authenticity and uniformity of the studied plant material

Changes in the T and B lymphocyte subset profiles upon treatment of patients with Graves’ disease with radioactive iodine

The aim of the present study was to evaluate the subpopulation profile of T and B lymphocytes, and their relationships during therapy of the patients with Graves’ disease (GD) treated by means of radioactive iodine. We have examined 36 women with verified diagnosis of GD. The contents of thyroid hormones were determined by immunoradiometric analysis. The levels of thyroid-stimulating hormone receptor autoantibodies (rTSH) were evaluated by enzyme-linked immunosorbent assay. On the basis of comprehensive pre-therapeutic examination, all patients were exposed to the fixed-activity therapy with radioactive iodine-131 at a dose of 400 to 700 MBq administered orally in isotonic aqueous solution of sodium iodide. 56 practically healthy women were examined as a control group. The phenotype of T and B cells in whole blood was studied by flow cytometry using direct immunofluorescence. It was shown that the patients, prior to treatment with radioactive iodine, had high levels of cellular functional activity, as determined by expression of CD25 antigen on T cells and CD23-antigen on B lymphocytes. Higher functional activity of the cells responsive for adaptive immunity in the patients with GD manifests in the presence of increased levels of autoantibodies to rTSH. By means of correlation analysis, we found that the patients with GD examined before the therapy had the thyroid status may determine the functional stimulation of T and B cells, thus increasing the levels of autoimmune processes. One month after radioiodine therapy (RIT), the GD patients, along with transient hyperthyroidism with increased concentration of autoantibodies to rTSH, showed a reduction of activated T lymphocyte contents (including T helpers and cytotoxic T cells) to control values. However, the level of cytotoxic T lymphocytes in the blood remained low, and the content of Treg cells was significantly increased in the patients. Decreased contents of B cells activated memory B cell to the control levels were found in patients with GD over 1 month after RIT when studying the phenotype of blood B lymphocytes. In this case, increased levels of naive B lymphocytes and B2 cells were detected, as well as decreased numbers of activated B1 lymphocytes. The observed changes in the subpopulation composition of T and B cells, and in their phenotype developed against the background of complete absence of relationships between the studied parameters, thus suggesting loss of thyroid control of immune processes and cooperative cell interaction during the development of the immune response. Generally, the phenotypic changes of T and B lymphocyte subsets in the blood of patients with GD through 1 month after treatment with radioactive iodine may reflect a trend for decreased functional activity of adaptive cellular immunity which may also account for inhibition of autoimmune processes

Nomenclatural standards, voucher specimens and genetic passports of potato cultivars created in the Siberian and Ural breeding centers

The present paper discusses methodological approaches to the creation of nomenclatural standards and genetic passports for Russian cultivars, currently being developed at the N.I. Vavilov Institute of Plant Genetic Resources (VIR) in collaboration with different breeding research centers. Plant material of potato cultivars bred in the Siberian Research Institute of Plant Cultivation and Breeding was collected by the cultivar creator A.D. Safonova in the experimental field of this institute and transferred to the VIR herbarium for preparation of their nomenclatural standards. Plant shoots and tubers of potato cultivars bred in other Siberian research centers in collaboration with the A.G. Lorkh All-Russian Research Institute of Potato Farming (VNIIKH) was collected by the representative of this institute in the experimental field of VNIIKH. As a result of joint research, nomenclatural standards were accomplished for 11 cultivars, namely ‘Аntonina’, ‘Zlatka’, ‘Lina’, ‘Lûbava’, ‘Nakra’, ‘Pamâti Rogačeva’, ‘Sarovskij’, ‘Safo’, ‘Solnečnyj’, ‘Tuleevskij’, ‘Ûna’** bred in five different Siberian breeding institutes including cultivars developed in collaboration with VNIIKH. Nomenclatural standards were prepared according to the ‘International Code of Nomenclature for Cultivated Plants’. DNA samples isolated from nomenclatural standards were used for preparation of genetic passports of these 11 cultivars. These genetic passports include information of the polymorphism of eight chromosome-specific microsatellites, data on the markers of 11 R-genes conferring resistance to various harmful organisms, as well as the information about cytoplasm types. Voucher specimens of additional three Siberian cultivars ‘Kemerovčanin’, ‘Kuznečanka’, ‘Tanaj’ and five Ural cultivars ‘Аlâska’, ‘Bravo’, ‘Irbitskij’, ‘Lûks’, ‘Terra’ from the Ural Research Institute for Agriculture were also registered in the VIR herbarium collection. For these eight cultivars, the genetic passports were not issued, but the results of SSR genotyping and molecular screening of voucher specimens performed with the same set of the DNA markers are presented in this report. A similar set of DNA markers was used for genotyping cultivar accessions from the in vitro and field collections of various institutes as well as cultivar specimens from eco-geographical tests performed within the framework of the Comprehensive Research Plan of the subprogram “Development of potato breeding and seed production in the Russian Federation”. The comparison of cultivar genetic passport data with genotyping results of specimens having the same name, but obtained from different sources made it possible to verify this plant material

The first search for bosonic super-WIMPs with masses up to 1 MeV/c2^2 with GERDA

We present the first search for bosonic super-WIMPs as keV-scale dark matter candidates performed with the GERDA experiment. GERDA is a neutrinoless double-beta decay experiment which operates high-purity germanium detectors enriched in $^{76}$Ge in an ultra-low background environment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN in Italy. Searches were performed for pseudoscalar and vector particles in the mass region from 60 keV/c$^2$ to 1 MeV/c$^2$. No evidence for a dark matter signal was observed, and the most stringent constraints on the couplings of super-WIMPs with masses above 120 keV/c$^2$ have been set. As an example, at a mass of 150 keV/c$^2$ the most stringent direct limits on the dimensionless couplings of axion-like particles and dark photons to electrons of $g_{ae} < 3 \cdot 10^{-12}$ and ${\alpha'}/{\alpha} < 6.5 \cdot 10^{-24}$ at 90% credible interval, respectively, were obtained.Comment: 6 pages, 3 figures, submitted to Physical Review Letters, added list of authors, updated ref. [21

Influence of р-thyrozol on the morphology and antioxidant-prooxidant balance in prostate of rats at sulpiride-induced benign prostatic hyperplasia

The aim of the research was to study the influence of p-thyrozol on the morphology and antioxidant-prooxidant balance in prostate of rats at sulpiride-induced benign prostatic hyperplasia. It was found that introduction of p-thyrozol promoted thwarting progress of pathological process that was proved by less degree of manifestation of proliferative processes in epithelium and of cellular infiltration of stroma. In addition, increase of antioxidant reserve of gland was registered