26,034 results match your criteria: "Slovakia; Center for Interdisciplinary Biosciences[Affiliation]"

Three-Dimensionally-Printed Polymer and Composite Materials for Dental Applications with Focus on Orthodontics.

Polymers (Basel)

November 2024

Department of Orthodontics, Regenerative and Forensic Dentistry, Faculty of Medicine, Comenius University in Bratislava, 81102 Bratislava, Slovakia.

Three-dimensional printing has transformed dentistry by enabling the production of customized dental restorations, aligners, surgical guides, and implants. A variety of polymers and composites are used, each with distinct properties. This review explores materials used in 3D printing for dental applications, focusing on trends identified through a literature search in PubMed, Scopus, and the Web of Science.

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Novel, Cost Effective, and Reliable Method for Thermal Conductivity Measurement.

Sensors (Basel)

November 2024

Department of Mechatronics and Electronics, Faculty of Electrical Engineering and Information Technology, University of Zilina, Univerzitna 1, 010 26 Zilina, Slovakia.

This study describes the development and utilization of a novel setup for measuring the thermal conductivity of polyurethane composites with various nanoparticle contents. Measurements were conducted using both an experimental setup and a professional instrument, the TPS 2500 S, with results demonstrating high agreement with the precision of the measurements. The setup was further validated using a standard reference material with a thermal conductivity of 0.

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Is It Time to Start Worrying? A Comprehensive Report on the Three-Year Prevalence of ESBL-Producing Bacteria and Their Trends in Antibiotic Resistance from the Largest University Hospital in Slovakia.

Pharmaceuticals (Basel)

November 2024

Faculty of Medicine, Comenius University in Bratislava, 5th Department of Internal Medicine, University Hospital Bratislava, Ružinov, Špitálska 24, 813 72 Bratislava, Slovakia, and Ružinovská 6, 826 06 Bratislava, Slovakia.

Article Synopsis
  • - ESBL-producing bacteria are raising concerns in healthcare due to increasing antimicrobial resistance and higher patient morbidity, prompting the need for monitoring their prevalence and resistance patterns over a three-year study.
  • - The study analyzed 1,599 ESBL-producing bacterial samples, examining their resistance to 20 different antibiotics and noting significant trends in resistance and isolation, especially with certain bacteria potentially contributing to higher mortality rates in the future.
  • - Findings revealed a unique local phenotypical distribution of ESBL strains, with consistent efficacy of meropenem but limited effectiveness of other antibiotics, emphasizing the urgent need for ongoing surveillance and better management strategies in hospitals.
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Seaweed Nutritional Value and Bioactive Properties: Insights from , , and .

Life (Basel)

November 2024

Institute of Horticulture, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture, Tr. A. Hlinku 2, 94976 Nitra, Slovakia.

This study investigates the nutritional composition and bioactive properties of (dulse), (knotted wrack), and (Irish moss). Understanding the nutritional values of these seaweeds is very important due to their potential health benefits, especially their antioxidant properties and cytotoxic activities, which point to their ability to inhibit cancer cell proliferation. Comprehensive analyses were conducted to assess protein content, amino acid composition, mineral profile, fatty acids, polyphenols, total carotenoids, antioxidant activity, and cytotoxicity against cervical (HeLa), and colon (HCT-116) cell lines.

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Arnold-Chiari Malformations in Pediatric Patients After Fetal Surgery for Meningomyelocele.

J Clin Med

November 2024

Department of Paediatric Surgery, Faculty of Medicine, Comenius University of Bratislava, 833 40 Bratislava, Slovakia.

(1) : Fetal surgery for meningomyelocele (MMC) should reduce the occurrence of Arnold-Chiari malformations, hydrocephalus, the associated need for craniocervical decompression, and the need for cerebrospinal fluid shunt insertion. Fetal surgery should improve ambulatory status. (2) : We used retrospective analysis of the documentation and descriptive statistics to summarize the clinical data and measured MRI parameters.

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Gradient Titanium Alloy with Bioactive Hydroxyapatite Porous Structures for Potential Biomedical Applications.

Materials (Basel)

November 2024

Cracow University of Technology, Faculty of Materials Engineering and Physics, Department of Materials Science, 37 Jana Pawła II Av., 31-864 Krakow, Poland.

Hard bone disease is a clinical problem affecting more than 20 million people annually worldwide, with significant health, social, and economic consequences. For successful integration of any implant, the key aspects are bone regeneration, osseointegration at the bone-implant interface, and the mitigation of inflammation. The purpose of this research work is to demonstrate an innovative material system and method of biomaterial preparation for regenerative medicine.

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Long-term treatment with bisphosphonates is accompanied by an increased risk of medication-related osteonecrosis of the jaw (MRONJ). Currently, no clinically useful biomarkers for the predictive diagnosis of MRONJ are available. To investigate the potential key proteins involved in the pathogenesis of MRONJ, a proteomic LC-MS/MS analysis of saliva was performed.

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Article Synopsis
  • - The study compares two decellularization methods (enzyme-detergent and detergent-detergent) to see how they affect the structure and mechanics of human urethral tissue, using samples from 18 individuals.
  • - Both methods successfully removed cellular content while maintaining essential extracellular matrix components like collagen and elastic fibers, indicating they preserved the tissue's structural integrity.
  • - Biomechanical tests showed that the detergent-detergent method resulted in lower stress levels compared to native tissues, and both methods had reduced elasticity, but none were toxic to stem cells, suggesting they are viable for tissue engineering and biobanking.
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The interplay between functional food nutrients and neurosteroids has garnered significant attention for its potential to enhance stress resilience in health and/or disease. Several bioactive nutrients, including medicinal herbs, flavonoids, and bioavailable polyphenol-combined nanoparticles, as well as probiotics, vitamin D and omega-3 fatty acids, have been shown to improve blood-brain barrier (BBB) dysfunction, endogenous neurosteroid homeostasis and brain function. These nutrients can inhibit oxidative stress and neuroinflammation, which are linked to the pathogenesis of various neurological disorders.

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Article Synopsis
  • The gut microbiome is crucial for regulating metabolism, immune response, and defending against pathogens, with disruptions linked to cancer development and treatment challenges.
  • Tumor-associated microbiota can promote cancer progression through mechanisms like enhanced transition and spread, particularly affecting bones, which are common metastasis sites in certain cancers.
  • Research is focused on the relationship between gut microbiome health and bone conditions, exploring dietary interventions and microbiota modulation as potential strategies for improving bone health in cancer patients.
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Post-traumatic stress disorder (PTSD) is a multifactorial psychological disorder that affects different neurotransmitter systems, including the central CRH system. CRH acts via the CRHR1 and CRHR2 receptors, which exert opposite effects, i.e.

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This study explores milk composition and blood markers in cows across lactation stages. Holstein cows were divided into four groups: beginning of lactation (BL; = 21), peak of lactation (PL; = 21), middle of lactation (ML; = 21), and end of lactation (EL; = 20). Blood (1 × 15 mL) and milk samples (1 × 100 mL) were collected for biomarker analysis.

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Antibacterial and Antibiofilm Activity of Essential Oils Against spp. Isolated from Rainbow Trout.

Animals (Basel)

November 2024

Institute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University in Košice, 040 01 Košice, Slovakia.

spp. is a major pathogen in aquaculture with a great negative economic impact. Essential oils (EOs) are compounds of the secondary metabolism of plants known for their antibacterial and antibiofilm activities.

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Background: Multiple research teams have documented various abnormalities in erythrocyte properties in children with autism spectrum disorder (ASD) compared with neurotypical individuals. Reduced erythrocyte deformability, a crucial factor for microcirculation and oxygen delivery, may affect brain function. Other key factors like nitric oxide (NO) and Na,K-ATPase-regulated cation transport also play roles in both erythrocyte deformability and ASD, suggesting a possible relationship between erythrocyte parameters and autism severity.

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Background: Published studies suggest that regular coffee consumption may reduce the risk of various diseases. However, many of these studies relied on questionnaire-based data, limiting their ability to identify the specific biological mechanisms behind the observed effects. This study focuses on controlled coffee consumption among healthy young adults to clarify its effects on erythrocyte properties.

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Extracellular DNA and Deoxyribonuclease Activity as Prognostic Markers in Sepsis.

Biomedicines

November 2024

Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Sasinkova 4, 811 08 Bratislava, Slovakia.

: Sepsis is characterized by a dysregulated immune response to infection and is associated with high lethality. Extracellular DNA (ecDNA) has drawn significant interest as a damage-associated molecular pattern because of its potential involvement in the pathophysiology of sepsis. : In this study, we examined the ecDNA concentration in 27 adult patients admitted to the intensive care unit.

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Background: Human leukocyte antigen G (HLA-G) is an immune checkpoint molecule with immunosuppressive and anti-inflammatory activities. It belongs to class I non-classical major histocompatibility complex molecules and has been upregulated in various cancer types. In bladder cancer (BC) tumors, the association of HLA-G with cancer progression has to be explained.

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Post-translational modifications of proteins play an important role in their stability, solubility and in vivo function. Also, for several reasons, such as the Golgi fragmentation during cancerogenesis, glycosylation as the most common modification is especially promising in offering high cancer specificity which, in combination with tissue-specific biomarkers available in the case of prostate diseases (PSA, PSMA, PAP), may lead to the development of novel oncodiagnostic approaches. In this review, we present the importance of subterminal glycan structures based on the N-acetylated monosaccharides GlcNAc and GalNAc in N- and also O-glycans, structures of which they are a component (LacNAc, LacdiNAc, branched structures).

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Sarco/endoplasmic reticulum Ca-ATPase (SERCA) is an important regulatory protein responsible for maintaining calcium homeostasis within cells. Impairment of SERCA associated with activity/expression decrease has been implicated in multiple chronic conditions, including cardiovascular diseases, diabetes, cancer, neurodegenerative diseases, and skeletal muscle pathologies. Natural polyphenols have been recognized to interact with several target proteins involving SERCA.

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Cryopreservation plays a critical role in animal breeding and the conservation of endangered species, but it often compromises sperm characteristics such as morphology, motility, and viability due to oxidative stress. This study explores the antioxidative effect of Mito-Tempo (MT) and Berberine (BER) to enhance post-thaw sperm quality in rabbits. Pooled rabbit sperm samples were supplemented with different concentrations (0.

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is mostly grown for its usage in the food, medical, and perfume industries, while it is also used as an attractive plant in parks, gardens, and homes. The use of essential oil may yield new results in relation to the antimicrobial activity of essential oils and their use mainly in extending the shelf life of foods. This study investigates the chemical composition and antimicrobial properties of essential oil (RDEO) using gas chromatography-mass spectrometry (GC-MS) and various bioassays to explore its potential applications in food preservation and microorganism growth control.

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Generalized Models with Arbitrary Number of Phase Transitions.

Entropy (Basel)

October 2024

Department of Theoretical Physics and Astrophysics, Institute of Physics, Faculty of Science, Pavol Jozef Šafárik University in Košice, Park Angelinum 9, 041 54 Košice, Slovakia.

We propose spin models that can display an arbitrary number of phase transitions. The models are based on the standard XY model, which is generalized by including higher-order nematic terms with exponentially increasing order and linearly increasing interaction strength. By employing Monte Carlo simulation we demonstrate that under certain conditions the number of phase transitions in such models is equal to the number of terms in the generalized Hamiltonian and, thus, it can be predetermined by construction.

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A tetracalcium phosphate/monetite/calcium sulfate hemihydrate powder cement mixture (CAS) in the form of a paste was used as a socket preservative to prevent alveolar ridge resorption after the extraction of the second premolar tooth in the mandible of a pig model. During the post-surgery period, the animals were monitored daily. No signs of inflammation, infection, or other complications were observed in the defect site for six months.

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The article discusses the impact of voice recognition and containerization technologies in the industrial sector, particularly on Programmable Logic Controller (PLC) devices. It highlights how voice assistants like Alexa, Siri, Cortana, and Google Assistant are pioneering and pushing the future of human-machine interfaces, with applications moving from smart homes to industrial automation. Containerization, illustrated by Docker, is transforming software deployment practices, offering benefits such as enhanced portability, modular architecture, and improved security when applied to industrial PLCs.

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Engineering of LOV-domains for their use as protein tags.

Arch Biochem Biophys

January 2025

Molecular Enzymology Group, University of Groningen, Nijenborgh 3, 9747AG, Groningen, the Netherlands. Electronic address:

Light-Oxygen-Voltage (LOV) domains are the protein-based light switches used in nature to trigger and regulate various processes. They allow light signals to be converted into metabolic signaling cascades. Various LOV-domain proteins have been characterized in the last few decades and have been used to develop light-sensitive tools in cell biology research.

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