2,738 results match your criteria: "Aarhus University. Forsøgsvej 1[Affiliation]"

Metagenomic exploration and computational prediction of novel enzymes for polyethylene terephthalate degradation.

Ecotoxicol Environ Saf

January 2025

Laboratory of Complex Biological Systems and Bioinformatics (CBB), Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran. Electronic address:

As a global environmental challenge, plastic pollution raises serious ecological and health concerns owing to the excessive accumulation of plastic waste, which disrupts ecosystems, harms wildlife, and threatens human health. Polyethylene terephthalate (PET), one of the most commonly used plastics, has contributed significantly to this growing crisis. This study offers a solution for plastic pollution by identifying novel PET-degrading enzymes.

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Ezrin Polarization as a Diagnostic Marker for Circulating Tumor Cells in Hepatocellular Carcinoma.

Cells

December 2024

Department of General, Visceral and Transplant Surgery, University Hospital Muenster, University of Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany.

Hepatocellular carcinoma (HCC) is the sixth most common cancer and the third leading cause of cancer-related death worldwide, with no precise method for early detection. Circulating tumor cells (CTCs) expressing the dynamic polarity of the cytoskeletal membrane protein, ezrin, have been proposed to play a crucial role in tumor progression and metastasis. This study investigated the diagnostic and prognostic potential of polarized circulating tumor cells (p-CTCs) in HCC patients.

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Direct View of Gate-Tunable Miniband Dispersion in Graphene Superlattices Near the Magic Twist Angle.

ACS Nano

January 2025

Department of Physics and Astronomy, Interdisciplinary Nanoscience Center, Aarhus University, Aarhus C 8000, Denmark.

Superlattices from twisted graphene mono- and bilayer systems give rise to on-demand many-body states such as Mott insulators and unconventional superconductors. These phenomena are ascribed to a combination of flat bands and strong Coulomb interactions. However, a comprehensive understanding is lacking because the low-energy band structure strongly changes when an electric field is applied to vary the electron filling.

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Understanding how inflammatory cytokines influence profibrogenic wound healing responses in fibroblasts is important for understanding the pathogenesis of fibrosis. TNF-α and IL-13 are key cytokines in Th1 and Th2 immune responses, respectively, while TGF-β1 is the principal pro-fibrotic mediator. We show that 12-day fibroblast culture with TNF-α or IL-13 induces fibrogenesis, marked by progressively increasing type III and VI collagen formation, and that TGF-β1 co-stimulation amplifies these effects.

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Mid-water column turbulence has been shown to cause elevated vertical nutrient flux at the shelf edge in the northeastern North Sea. Here, we demonstrate that phytoplankton communities in this region tend to be dominated by larger cells (estimated from percentage of chlorophyll captured on a 10 μm filter) than beyond the shelf edge. F/F (PSII electron transport capacity) corrected for photoinhibition in the surface layer correlated in this study with the percentage of chlorophyll captured on a 10 µm filter (assumed to be large cells), suggesting that the phytoplankton community was responding to increased nutrients in the euphotic zone by increasing photosynthetic efficiency and altering community composition.

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Background: Small Bowel Adenocarcinoma (SBA) is a rare gastrointestinal cancer with a limited understanding of the molecular pathology. This study aims to bridge the knowledge gap, providing a robust molecular foundation for SBA and addressing the clinical challenges inherent in treating this orphan disease. The study proposes to redefine the clinical management for SBA patients through advanced molecular profiling techniques to improve potential precision medicine.

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Biochar is a carbon-rich material produced through the pyrolysis of various feedstocks. It can be further modified to enhance its properties and is referred to as modified biochar (MB). The research interest in MB application in soil has been on the surge over the past decade.

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Ordinary differential equation models such as the classical SIR model are widely used in epidemiology to study and predict infectious disease dynamics. However, these models typically assume that populations are homogeneously mixed, ignoring possible variations in disease prevalence due to spatial heterogeneity. To address this issue, reaction-diffusion models have been proposed as an alternative approach to modeling spatially continuous populations in which individuals move in a diffusive manner.

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Plant-plant interactions are major determinants of the dynamics of terrestrial ecosystems. There is a long tradition in the study of these interactions, their mechanisms and their consequences using experimental, observational and theoretical approaches. Empirical studies overwhelmingly focus at the level of species pairs or small sets of species.

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Comprehensive industry-relevant black soldier fly bioconversion characterisation by a novel chamber system.

Waste Manag

December 2024

ETH Zurich, Laboratory of Sustainable Food Processing, Schmelzbergstrasse 9 8092, Zurich, Switzerland; Singapore-ETH Centre,1 Create Way 138602, Singapore.

Black soldier fly larvae (BSFL) efficiently convert biowaste into valuable animal feed. Sustainable and reliable bioconversion is desirable to achieve optimal economic and environmental outcomes. Thus, science and industry require an accessible research platform to study complex bioconversion processes under conditions mirroring industrial-scale settings.

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Photocatalytic Partial Water Oxidation Promoted by a Hydrogen Acceptor-Hydroxyl Mediator Couple.

Adv Sci (Weinh)

December 2024

Soochow Institute for Energy and Materials InnovationS (SIEMIS), Soochow University, Suzhou, 215006, China.

Hydrogen peroxide (HO) is an important chemical in synthetic chemistry with huge demands. Photocatalytic synthesis of HO via oxygen reduction and water oxidation reactions (ORR and WOR) is considered as a promising and desirable solution for on-site applications. However, the efficiency of such a process is low due to the poor solubility of molecular oxygen and the rapid reverse reaction of hydroxyl radicals (OH) with hydrogen atoms (H).

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pH-FISH: coupled microscale analysis of microbial identity and acid-base metabolism in complex biofilm samples.

Microbiome

December 2024

Section for Oral Ecology, Cariology, Department of Dentistry and Oral Health, Aarhus University, Vennelyst Boulevard 9, 8000, Aarhus C, Denmark.

Background: Correlative structural and chemical imaging of biofilms allows for the combined analysis of microbial identity and metabolism at the microscale. Here, we developed pH-FISH, a method that combines pH ratiometry with fluorescence in situ hybridization (FISH) in structurally intact biofilms for the coupled investigation of microbial acid metabolism and biofilm composition. Careful biofilm handling and modified sample preparation procedures for FISH allowed preservation of the three-dimensional biofilm structure throughout all processing and imaging steps.

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Evaluating post-cardiac arrest blood pressure thresholds associated with neurologic outcome in children: Insights from the pediRES-Q database.

Resuscitation

December 2024

Department of Pediatrics, Division of Critical Care Medicine, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, 1184 5th Ave, New York, NY 10029, USA.

Background: Current Pediatric Advanced Life Support Guidelines recommend maintaining blood pressure (BP) above the 5th percentile for age following return of spontaneous circulation (ROSC) after cardiac arrest (CA). Emerging evidence suggests that targeting higher thresholds, such as the 10th or 25th percentiles, may improve neurologic outcomes. We aimed to evaluate the association between post-ROSC BP thresholds and neurologic outcome, hypothesizing that maintaining mean arterial pressure (MAP) and systolic blood pressure (SBP) above these thresholds would be associated with improved outcomes at hospital discharge.

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Effect of IV Thrombolysis With Alteplase in Patients With Vessel Occlusion in the WAKE-UP Trial.

Neurology

January 2025

From the Center for Stroke Research Berlin (I.G., J.B.F.), Charité-Universitätsmedizin Berlin, Germany; Service de Biostatistique (F.B., P.R.), Hospices Civils de Lyon, France; Department of Neurology (B.C., C.G., G.T.), University Medical Center Hamburg-Eppendorf, France; Department of Stroke Medicine (T.-H.C.), Université Claude Bernard Lyon 1, Hospices Civils de Lyon, France; Neurologie der Rehaklinik Medical Park Humboldtmühle (M. Ebinger), Berlin; Klinik und Hochschulambulanz für Neurologie (M. Endres), Charité-Universitätsmedizin Berlin; Center for Stroke Research Berlin (M. Endres); German Center for Neurodegenerative Diseases (DZNE), partner site Berlin (M. Endres); German Centre for Cardiovascular Research (DZHK), partner site Berlin (M. Endres); German Center for Mental Health (DZPG), partner site Berlin (M. Endres), Germany; Department of Neurology (C.E.), Medical University of Graz, Austria; Department of Diagnostic and Interventional Neuroradiology (J.F.), Universitätsklinikum Hamburg-Eppendorf, Germany; Robertson Centre for Biostatistics (I.F.), University of Glasgow, Scotland; mediri GmbH (J.G.); Fraunhofer Institute for Digital Medicine MEVIS (M.G.), Bremen, Germany; Department of Neurosciences (R.L., A.W.), Experimental Neurology, KU Leuven-University of Leuven, Belgium; School of Psychology & Neuroscience (K.W.M.), University of Glasgow, Scotland; Department of Stroke Medicine (N.N.), Université Claude Bernard Lyon 1, and Hospices Civils de Lyon, France; Department of Neurology (C.Z.S.), Aarhus University Hospital, Denmark; Florey Institute of Neuroscience and Mental Health (V.N.T.), Heidelberg, Australia; and Institut d'Investigació Biomèdica de Girona (S.P.), Hospital Universitari Doctor Josep Trueta, Girona, Spain.

Background And Objectives: Data from randomized trials on the treatment effect of pure thrombolysis in patients with vessel occlusion are lacking. We examined data from a corresponding subsample of patients from the multicenter, randomized, placebo-controlled WAKE-UP trial to determine whether MRI-guided IV thrombolysis with alteplase in unknown-onset ischemic stroke benefits patients presenting with vessel occlusion.

Methods: Patients with an acute ischemic lesion visible on MRI diffusion-weighted imaging but no marked parenchymal hyperintensity on fluid-attenuated inversion recovery images were randomized to treatment with IV alteplase or placebo.

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Morphological . molecular identification of trematode species infecting the edible cockle across Europe.

Int J Parasitol Parasites Wildl

December 2024

Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR, 5805, Station Marine d'Arcachon, Arcachon, France.

Identifying marine trematode parasites in host tissue can be complicated when there is limited morphological differentiation between species infecting the same host species. This poses a challenge for regular surveys of the parasite communities in species of socio-economic and ecological importance. Our study focused on identifying digenean trematode species infecting the marine bivalve across Europe by comparing morphological and molecular species identification methods.

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Background: Soft-tissue sarcomas (STSs) are rare and challenging to diagnose due to their heterogeneous presentation. In 2009, Denmark introduced the Cancer Patient Pathways for sarcomas (CPPs) to improve sarcoma treatment by streamlining diagnostic and therapeutic processes. The primary objective of this study is to evaluate the impact of the CPPs on the overall survival of patients with deep-seated, high-grade STSs, comparing outcomes from before and after CPP implementation.

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Hydroxylamine, nitrous acid, and nitric oxide are obligate intermediates or side metabolites in different nitrogen-converting microorganisms. These compounds are unstable and susceptible to the formation of highly reactive nitrogen species, including nitrogen dioxide, dinitrogen trioxide, nitroxyl, and peroxynitrite. Due to the high reactivity and cytotoxicity, the buildup of reactive nitrogen can affect the interplay of microorganisms/microbial processes, stimulate the reactions with organic compounds like organic micropollutants (OMP) and act as the precursors of nitrous oxide (NO).

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Osteogenesis imperfecta (OI) is a multisystem disorder most often caused by pathogenic variants in genes that encode type I collagen. Type I collagen is abundant not only in bone but also in multiple tissues including skin, tendons, cornea, blood vessels and heart. Thus, OI can be expected to affect cardiovascular system, and there are numerous reports of cardiovascular disease (CVD) in people with OI.

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Specialized or secondary metabolites are small molecules of biological origin, often showing potent biological activities with applications in agriculture, engineering and medicine. Usually, the biosynthesis of these natural products is governed by sets of co-regulated and physically clustered genes known as biosynthetic gene clusters (BGCs). To share information about BGCs in a standardized and machine-readable way, the Minimum Information about a Biosynthetic Gene cluster (MIBiG) data standard and repository was initiated in 2015.

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The rapid melting of the Arctic cryosphere due to climate change will result in significant freshwater input into Arctic marine ecosystems. This might also cause the release of legacy mercury (Hg) stored in the cryosphere, increasing Hg concentration and its subsequent effects on the marine biota. However, there is scarce knowledge on the concentration of Hg in the lower trophic level organisms at the base of the Arctic pelagic food web.

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Background: Interstitial lung disease (ILD) is rarer in children (chILD) than adults, but with increasing diagnostic awareness, more cases are being discovered. chILD prognosis is often poor, but increasing numbers are now surviving into adulthood.

Aim: To characterize chILD-survivors and identify their impact on adult-ILD centers.

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Article Synopsis
  • Caring for newborns limits mammalian females' ability to gather resources, especially during the energy-demanding early lactation period.
  • Different ungulates have developed various strategies for protecting their vulnerable newborns, from staying hidden to being mobile, which can influence their mothers' movement patterns.
  • A study of 54 populations of 23 ungulate species shows that maternal movements are affected by the resource availability and type of neonatal strategy, highlighting the importance of these tactics in understanding how species adapt to environmental changes.
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Article Synopsis
  • Woodchip bioreactors (WBRs) help reduce excess nitrate leaching from agriculture to water bodies, but their efficiency drops in cold temperatures (<10°C).
  • Researchers tested bacterial bioaugmentation to improve nitrate removal rates in WBRs, finding short-term increases in nitrate-reducing microbes after inoculation, but the effects faded quickly.
  • Metagenome analyses revealed temporary shifts in bacterial communities and increased genes related to nitrate transformation, highlighting the need for better inoculation methods to sustain improvements in nitrate removal at lower temperatures.
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Multiphase Chemistry in the Atmosphere.

Chimia (Aarau)

November 2024

PSI Center for Energy and Environmental Sciences, Paul Scherrer Institute, Forschungsstrasse 111, CH-5232 Villigen, Switzerland.

Earth's atmosphere comprises a complex mix of gas and condensed phases, where condensed phases facilitate multiphase chemical reactions that would not occur in the gas phase alone. These reactions drive dynamic physical and chemical processes across various spatial and temporal scales, playing a crucial role in the cycling of atmospheric trace constituents. Multiphase chemistry significantly influences geochemical cycles, human health, and climate.

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