321,017 results match your criteria: "POLAND; UNIVERSITY CLINICAL HOSPITAL IN POZNAN[Affiliation]"

Organic-inorganic hybrid ferroelectric compounds of the halobismuthate family have emerged as a focal point of research owing to their reduced toxicity and distinctive optical characteristics. This study presents a novel ammonium hybrid perovskite, [BPMBDMA]·[Bi2Br9], which exhibits both ferro- and piezoelectric properties and crystallizes in the polar noncentrosymmetric 2 space group. The nonlinear optical (NLO) activity of [BPMBDMA]·[Bi2Br9] was corroborated through second harmonic generation measurements evidencing its noncentrosymmetric structure, which was further substantiated by piezoresponse force microscopy analyses.

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An inherently discrete-time model based on the mass action law for a heterogeneous population.

Math Biosci Eng

December 2024

Institute of of Information Technology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159 Street, building 34, 02-776 Warsaw, Poland.

In this paper, we introduce and analyze a discrete-time model of an epidemic spread in a heterogeneous population. As the heterogeneous population, we define a population in which we have two groups which differ in a risk of getting infected: a low-risk group and a high-risk group. We construct our model without discretization of its continuous-time counterpart, which is not a common approach.

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Molecular mechanisms of the GABA type A receptor function.

Q Rev Biophys

January 2025

Faculty of Medicine, Department of Biophysics and Neuroscience, Wroclaw Medical University, Wrocław, Poland.

The GABA type A receptor (GABAR) belongs to the family of pentameric ligand-gated ion channels and plays a key role in inhibition in adult mammalian brains. Dysfunction of this macromolecule may lead to epilepsy, anxiety disorders, autism, depression, and schizophrenia. GABAR is also a target for multiple physiologically and clinically relevant modulators, such as benzodiazepines (BDZs), general anesthetics, and neurosteroids.

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Introduction: Integrating digital health technologies to improve the overall performance of healthcare systems counts among the top priorities of the WHO. As evidenced in recent research, there are specific factors that may decisively determine the effective implementation and development of innovative digital health solutions. This review attempts to recognise and map the existing body of research and evidence to identify the determinants that either favour or hinder the deployment and use of digital health technologies by patients and physicians in primary care.

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Advances in gynaecologic oncology research lead to continuous updates in clinical guidelines. However, undergraduate medical education often lacks in-depth coverage of recent developments, limiting students' preparedness for evidence-based management of gynaecological cancers. This study aimed to bridge the educational gap by integrating case-based analyses of practice-changing studies into the undergraduate obstetrics and gynaecology course.

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Tacrolimus is metabolized in the liver with the participation of cytochrome P450 isoforms 3A4 and 3A5 (CYP3A4, CYP3A5). Omeprazole, unlike famotidine, is a substrate and inhibitor of CYP2C19, CYP3A4, CYP3A5 enzymes. The aim of the study is to compare the effect of omeprazole and famotidine on the tacrolimus concentration and the kidney transplant function.

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Development of a model for detection and analysis of inclusions in tomographic images of iron castings using decision trees.

Sci Rep

January 2025

Department of Applied Computer Science and Modelling Department, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Krakow, Czarnowiejska 66, 30-054, Krakow, Poland.

CT images of castings made of ductile iron were analyzed in the paper. On these images, objects can be identified that can be considered as graphite precipitates or indicate the presence of a defect in the casting. Research conducted in this area is described, based on experimental data that allows to determine whether the indicated components present in the casting are graphite precipitation.

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The single nucleotide polymorphism in NOD2 (rs2066847) is associated with conditions that may predispose to the development of gastrointestinal disorders, as well as the known BRCA1 and BRCA2 variants classified as risk factors in many cancers. In our study, we analyzed these variants in a group of patients with pancreatitis and pancreatic cancer to clarify their role in pancreatic disease development. The DNA was isolated from whole blood samples of 553 patients with pancreatitis, 83 patients with pancreatic cancer, 44 cases of other pancreatic diseases, and 116 healthy volunteers.

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Microscopic and quantitative characterization of germanium-indium bearing by-product from heavy metal metallurgy.

Sci Rep

January 2025

Faculty of Mechanical Engineering, Institute of Materials and Biomedical Engineering, University of Zielona Gora, prof. Z. Szafrana 4 Street, Zielona Gora, 65-516, Poland.

This article presents the results of study on the material characterization of germanium-indium drosses (Ge-In-D). Ge-In-D are a by-product of obtaining zinc and lead, which are currently not processed yet. Due to the exceptionally high concentrations of germanium and indium in them, as well as the commercial value of these elements, it became important to properly identify Ge-In-D, which was the aim of this work.

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at 50: a data-driven history.

J Med Ethics

January 2025

Interdisciplinary Centre for Ethics, Jagiellonian University, Krakow, Poland.

In this paper, we take a data-driven approach to analyse intellectual trends over the first five decades of the (). Our data set, comprising all texts published in the since 1975, reveals not only the most distinctive topics of the in comparison to other key journals with similar profiles but also diachronic fluctuations in the prominence of certain topics. Overall, the distribution of topics shifted gradually, with each editorial period at the showing continuity with its immediate predecessor.

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Background: Coronary artery disease (CAD) and atrial fibrillation (AF) often coexist, but the impact of clinical phenotypes of CAD on outcomes in AF patients in the non-vitamin K antagonist oral anticoagulant drugs (NOACs) era is less well understood.

Methods: This was a post-hoc of the GLORIA-AF registry, a global, multicenter, prospective AF registry study. Patients were divided into three groups: prior history of myocardial infarction (MI)/unstable angina group (Group 1); stable angina group (Group 2); and a control group without stable angina or history of MI/unstable angina.

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Soft tissue deficiency around dental implants can negatively impact outcomes in terms of esthetics and long-term stability. While autogenous connective tissue grafting is still considered the gold standard treatment, alternative approaches are being proposed primarily to enhance patient comfort and avoid invasive procedures such as two-sites surgeries using xenogeneic collagen matrices. Despite the advantages, the quality of the regenerated tissues remains unpredictable and, in many cases, questionable, highlighting the need for alternative and innovative approaches.

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The telomere connection between aging and cancer: The burden of replication stress and dysfunction.

Mech Ageing Dev

January 2025

Department of Medicine, Academy of Applied Medical and Social Sciences-AMiSNS: Akademia Medycznych I Spolecznych Nauk Stosowanych-2 Lotnicza Street, 82-300 Elbląg, Poland; Department of General Surgery and Surgical Oncology, "Saint Wojciech" Hospital, "Nicolaus Copernicus" Health Center, Jana Pawła II 50, 80-462 Gdańsk, Poland.

Aging is a complex process that affects individuals at the molecular, cellular, tissue, and systemic levels, arising from the cumulative effects of damage and diminished repair mechanisms. This process leads to the onset of age-related diseases, including cancer, which exhibits increased incidence with age. Telomeres, the protective caps at chromosome ends, play a crucial role in genome stability and are closely connected with aging and age-related disorders.

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The role of genetics in susceptibility to radiotherapy-induced toxicities is unclear. A strong impact of genetics should cause correlated toxicities in patients with metachronous double radiotherapy. We ascertained information about demographics, lifestyle, radiotherapy and early toxicities in irradiated tissues for a retrospective cohort of 98 patients from 2 hospitals who underwent two metachronous radiotherapeutic treatments (2007-2022) of different anatomical regions.

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22q11.2 deletion syndrome (22q11.2DS) is one of the most common congenital malformation syndromes resulting from disrupted embryonic development of pharyngeal pouches.

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Background: Asthma is associated with a prothrombotic state. Plasma factor VIIa-antithrombin complex concentrations (FVIIa-AT) indirectly reflect the interaction of tissue factor (TF) with FVII. Since TF is a key initiator of coagulation in vivo, we hypothesized that FVIIa-AT are higher in asthma.

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Assessment of pandemic-related pregnancy stress from seven western countries using Rasch analyses.

J Psychiatr Res

December 2024

Instituto de Investigación Biosanitaria Ibs.GRANADA, Granada, Spain; Faculty of Health Sciences, Department of Nursing, University of Granada (Spain), 04120 Almería, Spain. Electronic address:

Introduction: This study examined psychometric properties of the Pandemic-Related Pregnancy Stress Scale (PREPS) using a Rasch Model (RM) in a large sample of pregnant women from Germany, Israel, Italy, Poland, Spain, Switzerland and the United States of America (USA).

Material And Methods: Rasch analyses were used to analyze a sample of 7185 pregnant women who completed the PREPS during the COVID-19 pandemic onset from April to August 2020. Psychological, sociodemographic, and obstetric factors were also collected and analyzed.

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Access to pharmacy supplied emergency hormonal contraception vs the conscience clause of pharmacist.

Eur J Obstet Gynecol Reprod Biol

January 2025

Department of Human Physiology and Pathophysiology,Faculty of Medicine, Collegium Medicum, Cardinal Stefan Wyszynski University in Warsaw, 01-938 Warsaw, Poland.

Introduction: In light of the current state of the law, it is not possible to invoke the conscience clause when providing pharmaceutical services, which includes the procedure for dispensing emergency contraception to a patient. Introduction of emergency contraception available withut prescription is associated with a necessity of creating safe procedures both for patients and pharmacists.

Aim Of The Study: The purpose of the study was to analyze the Polish and international legal regulation of the conscience clause issue and how to optimize the process of making emergency contraception available without a prescription.

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Efficacy and safety of disease-modifying therapies in pediatric-onset multiple sclerosis: A systematic review of clinical trials and observational studies.

Mult Scler Relat Disord

January 2025

Department of Nutrition and Drug Research, Faculty of Health Sciences, Institute of Public Health, Jagiellonian University Medical College, Skawińska Street 8, 31-066 Krakow, Poland. Electronic address:

Objective: This study aimed to review the efficacy and safety profile of disease-modifying therapies (DMTs) in patients with relapsing pediatric-onset multiple sclerosis (POMS).

Methods: A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Published randomized controlled trials (RCTs), nonrandomized studies with a control group, large single-arm studies, and ongoing (unpublished) studies investigating the use of approved and unapproved DMTs in POMS were included.

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Supervised Exercise for Patients With Metastatic Breast Cancer: A Cost-Utility Analysis Alongside the PREFERABLE-EFFECT Randomized Controlled Trial.

J Clin Oncol

January 2025

Department of Epidemiology and Health Economics, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.

Purpose: To evaluate the cost utility of a 9-month supervised exercise program for patients with metastatic breast cancer (mBC), compared with control (usual care, supplemented with general activity advice and an activity tracker). Evidence on the cost-effectiveness of exercise for patients with mBC is essential for implementation in clinical practice and is currently lacking.

Methods: A cost-utility analysis was performed alongside the multinational PREFERABLE-EFFECT randomized controlled trial, conducted in 8 centers across Europe and Australia.

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Tattoos were a prevalent art form in pre-Hispanic South America exemplified by mummified human remains with preserved skin decoration that reflects the personal and cultural representations of their times. Tattoos are known to fade and bleed over time and this is compounded in mummies by the decay of the body, inhibiting the ability to examine the original art. Laser-stimulated fluorescence (LSF) produces images based on fluorescence emitted from within the target.

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Self-cleaning applications based on bionic surface designs requires an in-depth understanding of unique and complex wetting and evaporation processes of sessile droplets on natural biosurfaces. To this end, hydrophobic bamboo and Kalanchoe blossfeldiana leaves are excellent candidates for self-cleaning applications, but various properties, such as the heat and mass transfer processes during evaporation, remain unknown. Here, the dynamics of contact angle, radius, and heat and mass transfer during evaporation of sessile droplets on bamboo and Kalanchoe blossfeldiana leaves with roughness in the range 2.

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The suitability of a range of interatomic potentials for elemental tin was evaluated in order to identify an appropriate potential for modeling the stanene (2D tin) allotropes. Structural and mechanical features of the flat (F), low-buckled (LB), high-buckled (HB), full dumbbell (FD), trigonal dumbbell (TD), honeycomb dumbbell (HD), and large honeycomb dumbbell (LHD) monolayer tin (stanene) phases, were gained by means of the density functional theory (DFT) and molecular statics (MS) calculations with ten different Tersoff, modified embedded atom method (MEAM), and machine-learning-based (ML-IAP) interatomic potentials. A systematic quantitative comparison and discussion of the results is reported.

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We demonstrate the application of mechanochemistry in the synthesis of indolone-based photoswitches (hemiindigos, hemithioindigos, and oxindoles) via Knoevenagel condensation reactions. Utilizing ball-milling and an organic base (piperidine) acting as catalyst and solvent for liquid assisted grinding (LAG) conditions, we achieve rapid, solvent-free transformations, obtaining a set of known and previously unreported photoswitches, including highly functional amino acid-based photoswitches, multichromophoric derivatives and photoswitchable cavitands based on resorcin[4]arenes. The reaction under mechanochemical conditions gives moderate-to-high yields and is highly stereoselective leading to Z-isomers of hemiindigos and hemithioindigos and E-isomers of oxindoles.

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