2,945 results match your criteria: "Palacky-University Olomouc[Affiliation]"

Systematic reviews of effectiveness offer a rigorous synthesis of the best evidence available regarding the effects of interventions or treatments. Randomized controlled trials are considered the optimal study design for evaluating the effectiveness of interventions and are the ideal study design for inclusion in a systematic review of effectiveness. In the absence of randomized controlled trials, quasi-experimental studies may be relied on to provide information on treatment or intervention effectiveness.

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Introduction: Up to 50% of patients with ST elevation myocardial infarction (STEMI) have ≥ 50% stenosis in a major non-infarct-related artery. Several studies have evaluated the prognostic value of the completion of revascularization with overall inconclusive results. Selection of the stenoses was based on the angiographic evaluation, invasive hemodynamic measurement or the combined approach.

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Background: A malignant myoepithelioma is a rare tumor, mostly arising from the salivary glands. Myoepitheliomas of the ear have rarely been reported. The manuscript reports myoepithelial carcinoma of the external auditory canal (EAC) spreading to the infratemporal fossa.

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Enhancing the Potential of Fused Heterocycle-Based Triarylhydrazone Photoswitches.

Chemistry

February 2024

Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Bratislava, 84215, Slovakia.

Invited for the cover of this issue are Marek Cigáň, Anna M. Grabarz and co-workers. The image depicts how a non-expert might imagine a "molecular photoswitch".

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Plectin plays a role in the migration and volume regulation of astrocytes: a potential biomarker of glioblastoma.

J Biomed Sci

January 2024

Laboratory of Neuroendocrinology-Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.

Article Synopsis
  • This study investigates how plectin (PLEC), a cytolinker, affects aquaporin 4 (AQP4) expression and astrocyte behavior in glioblastoma (GBM)
  • Researchers utilized various methods, including immunohistochemistry and cell line experiments, to analyze the relationship between plectin and AQP4 in GBM samples
  • Findings revealed that plectin deficiency decreased AQP4 aggregation size and altered the cytoskeleton's organization, suggesting plectin's significant role in GBM cell migration and volume regulation.
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Wide metabolite coverage LC-MS/MS assay for the diagnosis of inherited metabolic disorders in urine.

Talanta

May 2024

Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic; Laboratory for Inherited Metabolic Disorders, Department of Clinical Biochemistry, University Hospital Olomouc, Olomouc, Czech Republic. Electronic address:

Objective: The laboratory diagnosis of inherited metabolic disorders (IMD) has undergone significant development in recent decades, mainly due to the use of mass spectrometry, which allows rapid multicomponent analysis of a wide range of metabolites. Combined with advanced software tools, the diagnosis becomes more efficient as a benefit for both physicians and patients.

Methods: A hydrophilic interaction liquid chromatography coupled with tandem mass spectrometry assay for determination of urinary purines, pyrimidines, N-acylglycines, N-acetylated amino acids, sugars, sugar alcohols and other diagnostically important biomarkers was developed and validated.

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Background: Secretoneurin (SN) is a neuropeptide with potential utility as a biomarker of cardiovascular episodes. The main effect of SN is mediated through its inhibition of calmodulin-dependent kinase II (CaMKII), which influences calcium handling. We aimed to associate the levels of SN in plasma with different causes of heart failure.

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Correction to "Band Gap and Morphology Engineering of Hematite Nanoflakes from an Sn Doping for Enhanced Photoelectrochemical Water Splitting".

ACS Omega

January 2024

Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 241/27, Olomouc 779 00, Czech Republic.

[This corrects the article DOI: 10.1021/acsomega.2c04028.

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Article Synopsis
  • - The study focuses on the creation of the INTEGRATE PA-Pol Tool, which examines the collaboration between national and local governments in developing and implementing physical activity promotion policies.
  • - It was developed through a three-phase process: conducting a scoping review of local policies, designing six questionnaires with an expert group, and validating these tools with cognitive response testing.
  • - The tool offers a structured approach to evaluate and enhance cooperation between different government levels, helping to monitor and improve the effectiveness of physical activity policies.
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"We Never Stop Singing": The Dynamics of the Mental and Physical Health of Czech Religious Pastors during the COVID-19 Pandemic.

J Relig Health

February 2024

Department of Sociology, Andragogy and Cultural Anthropology, Faculty of Arts, Palacky University Olomouc, CO-LAB Palacky University Olomouc, Křížkovského 511/10, 779 00, Olomouc, Czech Republic.

This study explores the dynamics of coping strategies of Czech religious leaders during a peak of the COVID-19 pandemic. An interpretative phenomenological analysis reveals that mental health among pastors is closely linked to a need to maintain community and social contact, while physical health is related to limitations upon ritual elements. In all narratives, the lived experience of mental health in the form of prosocial behavior is significantly prioritized despite the possibility of spreading infection.

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Background: Cardiorespiratory fitness (CRF) is an important indicator of current and future health. While the impact of habitual physical activity on CRF is well established, the role of sedentary behaviour (SB) remains less understood.

Objective: We aimed to determine the effect of SB on CRF.

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Turions are vegetative, dormant, and storage overwintering organs formed in perennial aquatic plants in response to unfavorable ecological conditions and originate by extreme condensation of apical shoot segments. The contents of cytokinins, auxins, and abscisic acid were estimated in shoot apices of summer growing, rootless aquatic carnivorous plants, and , and in developing turions at three stages and full maturity to reveal hormonal patterns responsible for turion development. The hormones were analyzed in miniature turion samples using ultraperformance liquid chromatography coupled with triple quadrupole mass spectrometry.

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Production of Xe and Xe via neutron activation of Xe and Xe at ILL-RHF and NCBJ-MARIA high-flux reactors.

Appl Radiat Isot

March 2024

CERN, Espl. des Particules 1, Meyrin, CH-1211, Switzerland; University of Geneva, Quai Ernest-Ansermet 24, Geneva, 1211, Switzerland. Electronic address:

The long-lived xenon isomers Xe and Xe are of interest for the GAMMA-MRI project, which aims at developing a novel imaging modality based on magnetic resonance of polarized unstable tracers. Here, we present the steps leading to and following the production of these two isomers via neutron irradiation of highly-enriched Xe and Xe gas samples at two high-flux reactors, the High-Flux Reactor (Réacteur à haut flux, RHF) at the Institut Laue-Langevin (ILL) and the MARIA reactor at the National Centre for Nuclear Research (NCBJ). We describe the experimental setups and procedures used to prepare the stable xenon samples, to open the irradiated samples, and to transfer xenon isomers into reusable transport vials.

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Background: Left ventricular thrombus (LVT) formation is one of the well-known and serious complications of acute myocardial infarction (AMI) due to the risk of systemic arterial embolization (SE). To diagnose LVT, echocardiography (TTE) is used. Late gadolinium-enhanced cardiovascular magnetic resonance (DE-CMR) is the gold standard for diagnosing LVT.

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Enhancing the Potential of Fused Heterocycle-Based Triarylhydrazone Photoswitches.

Chemistry

February 2024

Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Bratislava, 84215, Slovakia.

Triarylhydrazones represent an attractive class of photochromic compounds offering many interesting features including high molar absorptivity, good addressability, and extraordinary thermal stability. In addition, unlike most other hydrazone-based photoswitches, they effectively absorb light above 365 nm. However, previously prepared triaryhydrazones suffer from low quantum yields of the Z→E photoisomerization.

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Some pathological conditions affecting the human body can also disrupt metabolic pathways and thus alter the overall metabolic profile. Knowledge of metabolic disturbances in specific diseases could thus enable the differential diagnosis of otherwise similar conditions. This work therefore aimed to comprehensively characterize changes in tryptophan metabolism in selected neurodegenerative diseases.

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Background: Heart failure is a common complication after myocardial infarction (MI) and is associated with increased mortality. Whether remote heart failure symptoms assessment after MI can improve risk stratification is unknown. The authors evaluated the association of the 23-item Kansas City Cardiomyopathy Questionnaire (KCCQ) with all-cause mortality after MI.

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Article Synopsis
  • Large vessel carotid stenosis is a key factor in ischaemic stroke, but mild symptoms often precede significant events, which complicates surgical revascularisation decisions.
  • This study aims to explore the effect of significant carotid stenosis on retinal perfusion using automated retinal oximetry, hypothesizing a correlation between the severity of stenosis and reduced retinal blood flow.
  • By enrolling patients with carotid stenosis and comparing their retinal oximetry results to a control group, the study seeks to establish a clearer relationship that could expand the criteria for surgical intervention.
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Amyloid precursor protein induces reactive astrogliosis.

bioRxiv

December 2023

Translational Ageing and Neuroscience Program, Centre for Translational Medicine, International Clinical Research Centre, St. Anne's University Hospital, Brno, Czech Republic.

We present and evidence demonstrating that Amyloid Precursor Protein (APP) acts as an essential instigator of reactive astrogliosis. Cell-specific overexpression of APP in cultured astrocytes led to remodelling of the intermediate filament network, enhancement of cytokine production and activation of cellular programs centred around the interferon (IFN) pathway, all signs of reactive astrogliosis. Conversely, APP deletion in cultured astrocytes abrogated remodelling of the intermediate filament network and blunted expression of IFN stimulated gene (ISG) products in response to lipopolysaccharide (LPS).

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Background: Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterized by progressive deterioration of upper and lower motor neurons. A definitive diagnostic test or biomarker for ALS is currently unavailable, leading to a diagnostic delay following the onset of initial symptoms. Our study focused on cerebrospinal fluid (CSF) concentrations of clusterin, tau protein, phosphorylated tau protein, and beta-amyloid1-42 in ALS patients and a control group.

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This study introduces the PocketCFDM generative diffusion model, aimed at improving the prediction of small molecule poses in the protein binding pockets. The model utilizes a novel data augmentation technique, involving the creation of numerous artificial binding pockets that mimic the statistical patterns of non-bond interactions found in actual protein-ligand complexes. An algorithmic method was developed to assess and replicate these interaction patterns in the artificial binding pockets built around small molecule conformers.

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Background: Genetic focal segmental glomerulosclerosis (FSGS) is caused by pathogenic variants in a broad spectrum of genes that have a variable representation based on subjects' ethnicity and/or age. The most frequently mutated autosomal recessive gene in FSGS is . In this study, we analyzed the spectrum of variants and their associated phenotype in Czech adult FSGS patients.

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