Exploring the Potential Imaging Biomarkers for Parkinson's Disease Using Machine Learning Approach.

Parkinson's disease (PD) is a neurodegenerative disorder characterized by motor and neuropsychiatric symptoms resulting from the loss of dopamine-producing neurons in the substantia nigra pars compacta (SNc). Dopamine transporter scan (DATSCAN), based on single-photon emission computed tomography (SPECT), is commonly used to evaluate the loss of dopaminergic neurons in the striatum. This study aims to identify a biomarker from DATSCAN images and develop a machine learning (ML) algorithm for PD diagnosis.

Prediction of coating thickness for polyelectrolyte multilayers via machine learning.

Layer-by-layer (LbL) deposition method of polyelectrolytes is a versatile way of developing functional nanoscale coatings. Even though the mechanisms of LbL film development are well-established, currently there are no predictive models that can link film components with their final properties. The current health crisis has shown the importance of accelerated development of biomedical solutions such as antiviral coatings, and the implementation of machine learning methodologies for coating development can enable achieving this.

ECONOMIC AND LEGAL FORECAST ANALYSIS OF THE HEALTHCARE FINANCING SOURCES MATURITY IN UKRAINE.

The purpose of this article is to analyze the current situation of the development of the financial support sources in healthcare. In theoretical part we used generalized scientific methods of research such as analysis and synthesis to determine all the financial support sources in healthcare. In practical part we used the bulk of raw and processed statistical data and forecasting engine from Excel 2019 to understand the development trends of the healthcare financing sources and to define the level of their maturity based on their development lines.

Energy conversion efficiency in betavoltaic cells based on the diamond Schottky diode with a thin drift layer.

The HPHT diamond Schottky diode was assembled as a Metal/Intrinsic/p-doped structure betavoltaic cell (BC) with a very thin (1 μm) drift layer and tested under 5-30 keV electron beam irradiation using a scanning electron microscope (SEM). The effect of the β-radiation energy and the backscattering of electrons on the energy conversion was studied. From the results obtained, it is shown that, the efficiency of the investigated BC increases from 1.

BIOACTIVE GLASS-CERAMIC COMPOSITION IN SURGICAL MANAGEMENT OF PERIODONTAL INTRABONY DEFECTS.

It has been earlier proposed a novel graft on basis of bioactive glass-ceramics for infected bony defects, where silver and copper ions are represented as antibacterial agents. The objective was to investigate clinical and radiological efficacy of the bioactive glass-ceramic composition (BGCC) as bone substitute material for periodontal intrabony defects surgery. In a group of 47 patients with periodontitis was conducted controlled clinical study of the proposed composition.

Application of Molecular Methods for Carbapenemase Detection.

This study has evaluated the correlation between different carbapenemases detection methods on carbapenem non-susceptible strains from Northern and Eastern Europe; 31 institutions in 9 countries participated in the research project, namely Finland, Estonia, Latvia, Lithuania, Russia, St. Petersburg, Poland, Belarus, Ukraine, and Georgia. During the research program, a total of 5,001 clinical isolates were screened for any carbapenem non-susceptibility by the disk diffusion method, Vitek 2 or Phoenix system following the EUCAST guideline on detection of resistance mechanisms, version 1.

Third-order susceptibility of gold for ultrathin layers.

This Letter presents an experimental study of nonlinear plasmonic effects in gold-stripe waveguides. The optical characterization is performed by a picosecond laser and reveals two nonlinear effects related to propagation of long-range surface plasmon polaritons: nonlinear power transmission of plasmonic modes and spectral broadening of plasmonic modes. The experimental values of the third-order susceptibility of the gold layers are extracted.

[PRACTICAL COURSE AS REQUIRED EMERGENCY CARE AS AN OBLIGATORY BASIS OF PROFESSIONAL COMPETENCE OF SURGICAL SPECIALTIES DOCTORS].

The results of the study to determine the general level of knowledge and practical skills to provide emergency medical care by interns surgical specialties were presented. Provides information on the practical rate of emergency care, developed for medical interns in the Bogomolets National Medical University. The expediency of the introduction of a practical course for emergency care for interns surgical specialties.

Atomically resolved STM imaging with a diamond tip: simulation and experiment.

The spatial resolution of a scanning tunneling microscope (STM) can be enhanced using light element-terminated probes with spatially localized electron orbitals at the apex atom. Conductive diamond probes can provide carbon atomic orbitals suitable for STM imaging with sub-Ångström lateral resolution and high apex stability crucial for the small tunneling gaps necessary for high-resolution experiments. Here we demonstrate that high spatial resolution can be achieved in STM experiments with single-crystal diamond tips, which are generally only considered for use as probes for atomic force microscopy.

BACL is a novel brain-associated, non-NKC-encoded mammalian C-type lectin-like receptor of the CLEC2 family.

Natural Killer Gene Complex (NKC)-encoded C-type lectin-like receptors (CTLRs) are expressed on various immune cells including T cells, NK cells and myeloid cells and thereby contribute to the orchestration of cellular immune responses. Some NKC-encoded CTLRs are grouped into the C-type lectin family 2 (CLEC2 family) and interact with genetically linked CTLRs of the NKRP1 family. While many CLEC2 family members are expressed by hematopoietic cells (e.

[Ocular signs in anterior and posterior cervical sympathetic syndrome].

Features of anatomy and morphological changes of cervical spine resulting in sympathetic innervation defects, blood supply deficiency and ocular symptoms are reviewed. Results of experimental and clinical studies showing correlation of sympathetic cervical ganglions irritation and ocular pathologic conditions are presented. Ocular involvement in neurologic changes in anterior and posterior cervical sympathetic syndrome are reviewed.

[T(-786) --> C-polymorphism of the endothelial nitric oxide synthase promoter gene (eNOS) and exercise performance in sport].

Given the significant impact of the T(-786) --> C-polymorphism of the eNOS gene in the process of adaptation to physical stress, we aimed to investigate the effect of this polymorphism on physical performance in sportsmen and establish the possibility of its use as a marker of predisposition to the sport. DNA of 516 people, of which 195 qualified athletes and 321 people who had no experience of regular exercise was investigated. The frequency of genotypes and alleles of the T(-786) --> C-polymorphism of the eNOS gene in groups of athletes of different sports, the distribution of genotypes and alleles among athletes and those who are not involved in sports were studied.

[The changes of physiological reactivity of cardiorespiratory system to respiratory homeostasis with the use of complex stimulation of special work capacity].

We present the influence of the program of special additional stimulation of work capacity of high-performance athletes on the sensitivity of cardiorespiratory system to hypercapnic and hypoxic shifts in respiratory homeostasis. We found that under the influence of the pre-start complex a decrease in the sensitivity of ventilator responses to CO2-H+ stimuli in combination with a reduction in the thresholds of the reaction take place. This creates conditions for increased mobilization properties of the cardiorespiratory system and economization of its reaction under conditions of changes of respiratory homeostasis characteristic of intense training and competitive loads in the sport.

Results from a Ukrainian-US collaborative study: prevalence and predictors of respiratory symptoms among Ukrainian coal miners.

Background: Underground coal mining is an expanding industry in Ukraine, yet little is known about the burden of respiratory disease among Ukrainian miners.

Methods: A Fogarty International Center-supported collaboration between researchers at the University of Illinois and the Institute of Occupational Health in Kyiv, Ukraine formed to improve capacity for conducting and monitoring medical surveillance among Ukrainian coal miners. A cross-sectional survey among a random sample of working and former miners was conducted; demographic, work, and health information were collected using a standardized questionnaire.

Retroviral insertional mutagenesis can contribute to immortalization of mature T lymphocytes.

Several cases of T-cell leukemia caused by gammaretroviral insertional mutagenesis in children treated for x-linked severe combined immunodeficiency (SCID) by transplantation of autologous gene-modified stem cells were reported. In a comparative analysis, we recently showed that mature T cells, on the contrary, are highly resistant to transformation by gammaretroviral gene transfer. In the present study, we observed immortalization of a single T-cell clone in vitro after gammaretroviral transduction of the T-cell protooncogene LMO2.

[State of vasoregulative function of vascular endothelium and cardiohemodynamics in patients with chronic obstructive diseases of the lung (CODL) treated with losartan].

The authors studied the influence of lozartan -angiotensin II antagonist on the state of cardiohemodynamics and function of vessel endothelial cell in patients with CODL in the process of the treatment. 90 patients with stage II or III CODL in remission (average age is 50.46+/-5.

[Types of physiological reactivity of the respiratory system and the features of physical work capacity in athletes].

On the basis researches of character responses of respiratory system (RS) on hypercapnic and physical load at 54 skilled athletes (the runners on 100, 800 and 5000 m) are analyzed of the features in physiological reactivity of system on shifts respiratory homeostasis, reflecting a various orientation of long-term adaptation (sports of the training). The interrelation of sensitivity and stability of responses to hypercapnic (CO2-H+), and also limits and kinetic characteristics of responses RS of physical loads with manifestation of work capacity and mobilization features aerobic and anaerobic processes of during physical loads energy-supply was demonstrated. By means of tacsonomic analyses are allocated types of individual responses of organism of the skilled athletes on the basis of character RS responses to hypercapnic shifts in respiratory homeostasis.

[Results of the microbiological, clinical and immunological examination of children with Reiter's disease].

Infectious agents were detected in 100% of examined children with Reiter's disease (RD). Chlamydia trachomatis were detected in 98% of cases. In children with RD lesions of joints and eyes often took acute forms with cases of sacroiliitis, early muscular atrophy and conjunctivitis.

[Immunohistochemical study of the expression of receptors to steroid hormones in endometrial hyperplastic processes].

We examined 39 women with normal endometrium and 139 women with glandular-cystic hyperplasia of the endometrium (without atypia). According to clinical manifestations of hyperplasia, the patients were divided into 3 groups: 74 (53%) had reestablishing menstrual function after total curettage (group 1); 42 patients (30%) with glandular-cystic hyperplasia after curettage and hormonal therapy with progesterone and synthetic progestins (duration 3 to 6 months) had no repeated pathology of the endometrium (group 2); endometrial hyperplasia recurred 2 and 3 times as showed biopsies during 2-5 years of observation in 23 (17%) women (group 3). Immunohistochemical tests of normal endometrium revealed correlations between stages of menstrual cycle and steroid hormone receptors in nuclei of glandular epithelium and stromal cells.

Parameters of cellular immunity in perimenopausal patients with glandular and adenomatous endometrial hyperplasia.

No appreciable disorders of cellular immunity were detected in patients with glandular cystic endometrial hyperplasia. Atypical endometrial hyperplasia was associated with quantitative changes in T lymphocytes and their subpopulations, decreased level of lymphocytes carrying activation antigens, and increased count of natural killers. These changes can be characterized as immunocompensation.

Reiter's Disease in Children. Characteristic of Cellular Compartment of Immunity.

Reiter's disease in children was shown to be not such a rare disorder and to occur as the polysystemic process. The inflammation is induced by trigger agent (mostly by Chlamydia trachomatis), but then afterwards the key role has inadequate activation of cell-mediated and humoral immunity that may be manifested by substantial enhancement of leuko- and lymphopoiesis. There is an elevation of total number of leukocytes, T cells and lymphocytes, expressing CD4, CD8 and CD25 receptors with sharp increase of CD4/CD8 ratio.

[Morphometric characteristics (assessment of ploidy) of the degree of differentiation of uterine body adenocarcinoma].

53 histological slides obtained from 4 patients aged 35-68 years with diagnosis of uterine carcinoma without invasion (16 patients) and tumor invasion into uterine muscular membrane (24 patients) were retrospectively analyzed. On the basis of morphometry and ploidometry of 2989 nuclei on the image analyzer Imager-CG (Russia) with a computer program Avtan-San, a complex of diagnostic criteria characterizing the grade of malignancy of uterine tumors was obtained. Differential diagnostic ploidometric characteristics of 4 degrees of tumor progression are described.

Mesoscopic relaxation in homoepitaxial metal growth.

We demonstrate that a size-dependent mesoscopic mismatch exists in homoepitaxy, which has a strong impact on the morphology of the islands and the substrate. Atomic scale calculations for double layer Cu islands on Cu(111) reveal that mesoscopic strain relaxations in both islands and the substrate strongly influence the shape of islands and can effect the details of atomic motion near the island.

[Differences in maximal aerobic capacity for athletes conditioned by direction in the long-term adaptation process].

On the basis of investigation of 54 elite male athletes aged 19-24, specializing in different running distances (100, 800 and 5000 m), the influence of specific character of long-term adaptation in the body of athletes on general level of aerobic power and conditions of maximum manifestation of cardiorespiratory system aerobic capacity was demonstrated. The determine maximum level of aerobic capacity in the athletes, motor tests that take into account the features of maximum aerobic capacity mobilization conditions due to specifics of sports specialization were selected.

[Reiter's disease in children].

Two cases of diagnostic mistakes of Reuter's disease in for children have been described. 7-year-old girl has been operated on for the suspicion on hematogenic osteomyelitis. The diagnosis was not confirmed.