115,847 results match your criteria: "Czech Republic; Institute of Thermomechanics[Affiliation]"
Insects
January 2025
Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic.
Altogether three species of Empidinae are described from San Rossore National Park, Italy: () Barták sp. nov., Barták sp.
View Article and Find Full Text PDFInsects
January 2025
Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 44 Praha, Czech Republic.
Thermal polymorphism, usually represented by thermal melanism (darker coloration in cooler habitats), is a well-known phenomenon in animals. In Cetoniinae, several species in captivity tend to become darker after several generations of breeding, which is probably caused by a lower temperature than is typical for their native habitats. is a beetle species occurring in Somaliland.
View Article and Find Full Text PDFInsects
January 2025
Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic.
To date, no study has been conducted to investigate the diversity in honeybee populations of in the Czech Republic. Between 2022 and 2023, worker bees were collected from colonies distributed throughout the Czech Republic in 77 districts, and their genetic differences were examined using 22 microsatellite loci. The samples were obtained from hives ( = 3647) and through the process of capture on flowers ( = 553).
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Institute of Immunology Nicolás Enrique Bianco, Faculty of Medicine, Universidad Central de Venezuela Los Chaguaramos, Caracas 1040, Venezuela.
Vaccines represent an essential tool for the prevention of infectious diseases. Upon administration, a complex interaction occurs between the vaccine formulation and the recipient's immune system, ultimately resulting in protection against disease. Significant variability exists in individual and population responses to vaccination, and these differences remain the focus of the ongoing research.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Department of Medical Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland.
Hepatocellular carcinoma (HCC) cells critically depend on PARP1 and CHK1 activation for survival. Combining the PARP inhibitor (PARPi) olaparib with a CHK1 inhibitor (MK-8776, CHK1i) produced a synergistic effect, reducing cell viability and inducing marked oxidative stress and DNA damage, particularly in the HepG2 cells. This dual treatment significantly increased apoptosis markers, including γH2AX and caspase-3/7 activity.
View Article and Find Full Text PDFMicroorganisms
January 2025
VUAB Pharma A.S, Nemanicka 2722, 370 01 České Budějovice, Czech Republic.
Daunomycin is a chemotherapeutic agent widely used for the treatment of leukemia, but its toxicity toward healthy dividing cells limits its clinical use and its production by fermentation. Herein, we describe the development of a specialized cultivation medium for daunomycin production, including a shift to oil rather than sugar as the primary carbon source. This achieved an almost threefold increase in daunomycin yields, reaching 5.
View Article and Find Full Text PDFMicromachines (Basel)
January 2025
Department of Information Engineering, University of Brescia, 25121 Brescia, Italy.
Microelectromechanical systems (MEMS) refer to miniaturized mechanical and electro-mechanical elements that are fabricated through microelectronic processes [...
View Article and Find Full Text PDFGenes (Basel)
January 2025
Department of Animal Science and Food Processing, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic.
: The domestication of the grey wolf () and subsequent creation of modern dog breeds have significantly shaped the genetic landscape of domestic canines. This study investigates the genomic effects of hybridization and breeding management practices in two hybrid wolfdog breeds: the Czechoslovakian Wolfdog (CSW) and the Saarloos Wolfdog (SAW). : We analyzed the genomes of 46 CSWs and 20 SAWs, comparing them to 12 German Shepherds (GSHs) and 20 wolves (WLFs), which served as their ancestral populations approximately 70-90 years ago.
View Article and Find Full Text PDFBiomolecules
December 2024
Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic.
We investigated the sex-dependent effects of inflammatory responses in visceral adipose tissue (VAT) and perivascular adipose tissue (PVAT), as well as hematological status, in relation to cardiovascular disorders associated with prediabetes. Using male and female hereditary hypertriglyceridemic (HHTg) rats-a nonobese prediabetic model featuring dyslipidemia, hepatic steatosis, and insulin resistance-we found that HHTg females exhibited more pronounced hypertriglyceridemia than males, while HHTg males had higher non-fasting glucose levels. Additionally, HHTg females had higher platelet counts, larger platelet volumes, and lower antithrombin inhibitory activity.
View Article and Find Full Text PDFAntibiotics (Basel)
December 2024
Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 77900 Olomouc, Czech Republic.
Cathelicidins are a group of cationic, amphipathic peptides that play a vital role in the innate immune response of many vertebrates, including humans. Produced by immune and epithelial cells, they serve as natural defenses against a wide range of pathogens, including bacteria, viruses, and fungi. In humans, the cathelicidin LL-37 is essential for wound healing, maintaining skin barrier integrity, and combating infections.
View Article and Find Full Text PDFAnimals (Basel)
January 2025
Department of Game Management and Wildlife Biology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, 165 21 Praha, Czech Republic.
Hunting dogs are exposed to the risk of injury in driven hunts, an often-used method for managing growing wild boar numbers. This study investigated the impact of increased hunting pressure-both across the hunting season and within individual hunting events-on the risk of wild boar attacks on hunting dogs, i.e.
View Article and Find Full Text PDFCancers (Basel)
January 2025
Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria.
: The addition of androgen receptor pathway inhibitors (ARPIs) to androgen deprivation therapy (ADT), with or without docetaxel (Doc), is currently recommended for metastatic, hormone-sensitive prostate cancer (mHSPC). Recently, the ARANOTE trial evaluated the efficacy and safety of Darolutamide + ADT in this setting. We aimed to update a network meta-analysis (NMA) of these combination therapies.
View Article and Find Full Text PDFCancers (Basel)
January 2025
Department of Surgical Oncology, Masaryk Memorial Cancer Institute, 656 53 Brno, Czech Republic.
Background: In the current era of targeted axillary dissection (TAD), there are still cases where axillary lymph node dissection (ALND) is indicated, but histopathological examination confirms the regression of nodal metastases (ypN0). In this situation, ALND may represent undesirable overtreatment.
Methods: A retrospective study at the Comprehensive Cancer Centre was conducted based on a prospectively maintained database.
Biomedicines
January 2025
Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, 77515 Olomouc, Czech Republic.
Hypertriglyceridemia has serious health risks such as cardiovascular disease, type 2 diabetes mellitus, nephropathy, and others. Fenofibrate is an effective hypolipidemic drug, but its benefits for ameliorating disorders associated with hypertriglyceridemia failed to be proven in clinical trials. To search for possible causes of this situation and possibilities of their favorable influence, we tested the effect of FF monotherapy and the combination of fenofibrate with silymarin on metabolic disorders in a unique model of hereditary hypertriglyceridemic rats (HHTg).
View Article and Find Full Text PDFBiomedicines
December 2024
Laboratory of Evolutionary Biology, Department of Philosophy and History of Sciences, Faculty of Science, Charles University, Viničná 7, 128 00 Prague, Czech Republic.
The long-term consequences of COVID-19 infection are becoming increasingly evident in recent studies. This repeated cross-sectional study aimed to explore the long-term health and cognitive effects of COVID-19, focusing on how virus variants, vaccination, illness severity, and time since infection impact post-COVID-19 outcomes. We examined three cohorts of university students ( = 584) and used non-parametric methods to assess correlations of various health and cognitive variables with SARS-CoV-2 infection, COVID-19 severity, vaccination status, time since infection, time since vaccination, and virus variants.
View Article and Find Full Text PDFBiology (Basel)
January 2025
Fish Health Division, University of Veterinary Medicine, Veterinärplatz 1, 1210 Vienna, Austria.
A new species of (Ceratomyxidae, Myxosporea) was found infecting the gall bladder of the Argentine croaker Berg 1895 (Sciaenidae, Perciformes) from the Argentine sea. Using an integrative taxonomic approach that combines morphological, bioecological, and molecular analyses, we provide evidence that clearly differentiates this species from known taxa and formally describe as a new species. This study is the first to apply landmark-based geometric morphometrics (GM) in myxozoan research, providing a detailed analysis of conspecific morphometric variation of ceratomyxid myxospores, examining their natural variation within and among different ceratomyxids infecting the gall bladder of .
View Article and Find Full Text PDFFoods
January 2025
Department of Animal Origin Food and Gastronomic Sciences, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic.
The aim of this study was to assess the germination and growth of two strains of following the artificial inoculation of six selected hot dishes with spores which were then stored at temperatures of 40, 50, and 60 °C for 0.5, 1.0, 2.
View Article and Find Full Text PDFCell Transplant
January 2025
Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic.
The eye represents a highly specialized organ, with its main function being to convert light signals into electrical impulses. Any damage or disease of the eye induces a local inflammatory reaction that could be harmful for the specialized ocular cells. Therefore, the eye developed several immunoregulatory mechanisms which protect the ocular structures against deleterious immune reactions.
View Article and Find Full Text PDFJ Phys Chem B
January 2025
Department of Polymers for Electronics and Photonics, Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 00, Czech Republic.
The structural response of 1,2-dimyristoyl-glycero-3-phosphatidylcholine (DMPC)/water bilayers to addition and subsequent solvation of a small amphiphilic molecule - an anesthetic benzyl alcohol - was studied by means of solid-state NMR (H NMR, P NMR) spectroscopy and low-angle X-ray diffraction. The sites of binding of this solute molecule within the bilayer were determined - the solute was shown to partition between several sites in the bilayer and the equilibrium was shown to be dynamic and dependent on the level of hydration and temperature. At the same time, it was shown that solubilization of benzyl alcohol reached a solubility limit and was terminated when the ordering profile of DMPC hydrocarbon chains adopted finite limiting values throughout the whole chain.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Cybernetics and Biomedical Engineering, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, 70800, Ostrava, Czech Republic.
During 2020-2021, the COVID-19 pandemic exposed significant vulnerabilities in hospital safety, with oxygen-related fires and explosions occurring at twice the usual rate. This highlighted insufficient preparedness for increased oxygen therapy demands and the associated risks of oxygen-enriched atmospheres. This study aimed to develop and test a smart monitoring system to detect increased oxygen concentrations in hospital environments, mitigating the risk of fires.
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January 2025
Department of Ecology, Faculty of Science, Charles University, Viničná 7, Prague, 128 44, Czech Republic.
Obligatory parthenogenesis in vertebrates is restricted to squamate reptiles and evolved through hybridisation. Parthenogens can hybridise with sexual species, resulting in individuals with increased ploidy levels. We describe two successive hybridisations of the parthenogenetic butterfly lizards (genus Leiolepis) in Vietnam with a parental sexual species.
View Article and Find Full Text PDFSci Rep
January 2025
TB Raab GmbH, Quadenstraße 13, 2232, Deutsch-Wagram, Austria.
Most species of migrating birds use a combination of innate vector-based orientation programs and social information to facilitate accurate navigation during their life. A number of various interspecies hybridisations have been reported in birds. The traits of parents are expressed in hybrids in typical ways which are either intermediate, combined or heterotic.
View Article and Find Full Text PDFNat Commun
January 2025
School of Mathematics and Physics, Queen's University Belfast, Belfast, UK.
Laser-plasma acceleration of protons offers a compact, ultra-fast alternative to conventional acceleration techniques, and is being widely pursued for potential applications in medicine, industry and fundamental science. Creating a stable, collimated beam of protons at high repetition rates presents a key challenge. Here, we demonstrate the generation of multi-MeV proton beams from a fast-replenishing ambient-temperature liquid sheet.
View Article and Find Full Text PDFBMJ Paediatr Open
January 2025
Department of Paediatrics, Edward Francis Small Teaching Hospital, Banjul, Gambia
Background: Diarrhoea remains a leading cause of death in children. An intestinal adsorbent may reduce diarrhoea duration and severity.
Methods: Randomised controlled feasibility trial with two phases: phase 1 (0-4 hours and double-blind) and phase 2 (up to 5 days and open-label).
J Nat Prod
January 2025
Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 03 Hradec Kralove, Czech Republic.
An activity-guided isolation study on the EtOH extract prepared from the bulbs of yielded four new phenolic compounds, including a new stilbenoid (), a new homoisoflavonoid derivative (), a new homoisoflavonoid dimer (), and an unprecedented homoisoflavone-stilbene heterodimer (), together with six known (-) analogs. Their chemical structures were elucidated by spectroscopic analysis and theoretical NMR and ECD calculations. Compounds and are unique in their scaffolds.
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