14,296 results match your criteria: "Ruhr- University Bochum.[Affiliation]"

Background: Different definitions of disability progression by Expanded Disability Status Scale (EDSS) may influence frequency and/or time to event.

Methods: In this multicenter cohort study, we included PPMS patients with follow-up ≥24 months and ≥3 available EDSS scores overall (≥1 per year). We applied 672 definitions of disability progression including different minimal EDSS increase, required confirmation and fixed/roving-baseline score.

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Importance: Early administration of supplemental oxygen for all severely injured trauma patients is recommended, but liberal oxygen treatment has been associated with increased risk of death and respiratory complications.

Objective: To determine whether an early 8-hour restrictive oxygen strategy compared with a liberal oxygen strategy in adult trauma patients would reduce death and/or major respiratory complications.

Design, Setting, And Participants: This randomized controlled trial enrolled adult trauma patients transferred directly to hospitals, triggering a full trauma team activation with an anticipated hospital stay of a minimum of 24 hours from December 7, 2021, to September 12, 2023.

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Article Synopsis
  • * Researchers mapped the three-dimensional strain field and identified how indium content in the shell impacts the strain distribution and plastic relaxation processes.
  • * The study found that although axial strains are uniform, radial and tangential strain gradients occur due to strain concentration at interfaces, affecting the growth strategies for these nanowires.
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Neurofeedback for Attention-Deficit/Hyperactivity Disorder: A Systematic Review and Meta-Analysis.

JAMA Psychiatry

December 2024

Department of Child and Adolescent Psychiatry, King's College London, Institute of Psychiatry, Psychology and Neuroscience, London, United Kingdom.

Importance: Neurofeedback has been proposed for the treatment of attention-deficit/hyperactivity disorder (ADHD) but the efficacy of this intervention remains unclear.

Objective: To conduct a meta-analysis of randomized clinical trials (RCTs) using probably blinded (ie, rated by individuals probably or certainly unaware of treatment allocation) or neuropsychological outcomes to test the efficacy of neurofeedback as a treatment for ADHD in terms of core symptom reduction and improved neuropsychological outcomes.

Data Sources: PubMed (MEDLINE), Ovid (PsycInfo, MEDLINE, Embase + Embase Classic), and Web of Science, as well as the reference lists of eligible records and relevant systematic reviews, were searched until July 25, 2023, with no language limits.

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The development of the brain's vascular system is a predominantly prenatal process in mammalian species and is required for neurogenesis and further brain development. Our recent work on fetal pig has revealed that many neurodevelopmental processes start well before birth and proceed rapidly reaching near-mature status already around birth. Here, we analyzed the development of neocortical vasculature from embryonic day (E) 45 onward (gestation in pig lasts 114 days) using qualitative and quantitative image analyses and protein blots.

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Background: Anaphylaxis is a systemic allergic reaction that is potentially life-threatening. Occupational anaphylaxis is an anaphylaxis that occurs in an occupational context. In this position paper, we propose diagnostic criteria for occupational anaphylaxis and provide an overview of the current state of knowledge in terms of prevalence, triggers, prevention, and management.

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Background: Yellow nail syndrome is characterized by a yellow discoloration of the nails, respiratory symptoms, and lymphedema. It was first described in 1964 and has an estimated prevalence of less than 1:1.000.

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Heterogeneity-driven phenotypic plasticity and treatment response in branched-organoid models of pancreatic ductal adenocarcinoma.

Nat Biomed Eng

December 2024

Translational Pancreatic Cancer Research Center, Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar, Technical University of Munich, München, Germany.

In patients with pancreatic ductal adenocarcinoma (PDAC), intratumoural and intertumoural heterogeneity increases chemoresistance and mortality rates. However, such morphological and phenotypic diversities are not typically captured by organoid models of PDAC. Here we show that branched organoids embedded in collagen gels can recapitulate the phenotypic landscape seen in murine and human PDAC, that the pronounced molecular and morphological intratumoural and intertumoural heterogeneity of organoids is governed by defined transcriptional programmes (notably, epithelial-to-mesenchymal plasticity), and that different organoid phenotypes represent distinct tumour-cell states with unique biological features in vivo.

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Objective: Uromodulin is the most abundant urinary protein in healthy subjects which under physiological conditions protects against kidney stone formation. Acid-base imbalances, especially states with acidic urine, increase the risk for uric acid and oxalate stones, but lower it for phosphate-containing stones. Whether habitual high acid loads and high dietary phosphorus intake (P-In) themselves may influence plasma uromodulin concentrations in the long-term is not known.

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Path integration (PI), which supports navigation without external spatial cues, is facilitated by grid cells in the entorhinal cortex. These cells are often impaired in individuals at risk for Alzheimer's disease (AD). However, other brain systems can compensate for this impairment, especially when spatial cues are available.

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A basic system of paraconsistent Nelsonian logic of conditionals.

J Logic Lang Inf

December 2024

Department of Philosophy I, Ruhr University Bochum, Universitätsstraße 150, Bochum, 44780 Germany.

We define a Kripke semantics for a conditional logic based on the propositional logic , the paraconsistent variant of Nelson's logic of strong negation; we axiomatize the minimal system induced by this semantics. The resulting logic, which we call , shows strong connections both with the basic intuitionistic logic of conditionals introduced earlier in (Olkhovikov, 2023) and with the -based modal logic introduced in (Odintsov and Wansing, 2004) as one of the possible counterparts to the classical modal system . We map these connections by looking into the embeddings which obtain between the aforementioned systems.

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Article Synopsis
  • This study explores the use of engineered micro-topographic surfaces, created from carbon nanotubes (CNTs) and polydimethylsiloxane (PDMS) nanocomposites, as a potential method for preventing fouling in applications.
  • The researchers focused on how manufacturing conditions, like roller speed and gap distance, influenced the surfaces' properties, finding that a smaller gap distance improved hydrophobicity.
  • The results demonstrated that the textured surfaces had up to a 35% reduction in diatom attachment compared to smooth non-textured surfaces, suggesting that surface roughness plays a key role in reducing biofouling.
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  • The study investigates the effectiveness of high-resolution nerve ultrasound (HRUS) in diagnosing polyneuropathy caused by the chemotherapy drug vincristine.
  • Twelve patients undergoing vincristine treatment and twelve healthy controls participated, with measurements taken at various intervals, including nerve cross-sectional areas (CSAs), neuropathy scores, and nerve conduction studies.
  • Results indicated that while overall CSA at nerve entrapment sites increased alongside clinical symptoms, HRUS did not show significant changes at individual nerve sites, highlighting that clinical exams are key for early detection of vincristine-induced polyneuropathy.
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Previously, addition of isatuximab (Isa) to standard-of-care lenalidomide-bortezomib-dexamethasone (RVd) in transplant-eligible patients with newly diagnosed multiple myeloma in the GMMG-HD7 trial (ClinicalTrials.gov identifier: NCT03617731) resulted in a significant increase of minimal residual disease negativity (MRD-) rates after induction therapy. A total of 662 patients were randomly assigned to receive induction therapy with Isa-RVd (n = 331) or RVd (n = 329), followed by single or tandem autologous stem-cell transplant and second random assignment to maintenance with lenalidomide alone or Isa-lenalidomide.

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Melamine - A PMT/vPvM substance as a generic indicator for anthropogenic activity and urbanisation? An explorative study on melamine in the water cycle and soil.

Chemosphere

February 2025

Ruhr University Bochum, Institute of Geology, Mineralogy & Geophysics, Dept. Hydrogeology and Environmental Geology, Universitätsstr. 150, 44801, Bochum, Germany. Electronic address:

Melamine has a high production volume today and is spread ubiquitously in the anthropogenic technosphere. It is released steadily to the water cycle by many sources. Even though melamine has low direct toxicity, chronic exposure can cause nephrolithiasis and disrupt the endocrine system.

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Background: Regular physical activity (PA) provides numerous health benefits, which is why many people intend to lead an active lifestyle. Yet, internal and external states and barriers can hinder the translation of such intentions into actual behavior. This study prospectively studied such barriers, namely, the temporal relationship between the independent variables momentary affect (stress, emotions), and the dependent variables PA intentions and subsequent PA behavior.

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A new species of African diurnal dwarf geckos (Gekkonidae: Lygodactylus) from the Lower Guinea rainforest.

Zootaxa

November 2024

CIBIO; Centro de Investigação em Biodiversidade e Recursos Genéticos; InBIO Laboratório Associado; Campus de Vairão; Universidade do Porto; 4485-661 Vairão; Portugal.; BIOPOLIS Program in Genomics; Biodiversity and Land Planning; CIBIO; Campus de Vairão; 4485-661 Vairão; Portugal..

Article Synopsis
  • * A new species, Lygodactylus lobeke sp. nov., was identified from a female in Cameroon and a male in Angola, which highlighted existing issues in distinguishing certain candidate species among the Lygodactylus groups.
  • * This new species is small and lacks vibrant color patterns, differing from closely related species like L. fischeri, and has been confirmed as a distinct clade through genetic analysis, with known habitats in the Lower Guinea rainforests.
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Use of CPR feedback devices to treat out-of-hospital cardiac arrest in Germany: Associated with improved ROSC-rates, but infrequent usage, in a registry-based analysis of 107,548 cases.

Resuscitation

December 2024

University Hospital Schleswig-Holstein. Institute for Emergency Medicine, Arnold-Heller-Str. 3, Haus 808, 24105 Kiel, Germany; German Resuscitation Registry, German Society for Anesthesiology and Intensive Care Medicine, Neuwieder Str. 9, 90411 Nürnberg, Germany; University Hospital Schleswig-Holstein. Department of Anesthesiology and Intensive Care Medicine, Campus Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany. Electronic address:

Introduction: Out-of-hospital cardiac arrest is a leading cause of mortality in Europe. Quality cardiopulmonary resuscitation, particularly of chest compressions, is crucial. Real-time audiovisual feedback (RTAVF) devices aim to enhance chest compression quality.

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Background: Cancer immunotherapy has revolutionized melanoma treatment, but the high number of non-responders still emphasizes the need for improvement of therapy. One potential avenue for enhancing anti-tumor treatment is through the modulation of coagulation and platelet activity. Both have been found to play an important role in the tumor microenvironment, tumor growth and metastasis.

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Insights of the Proton Transport Efficiency of a Membrane Electrode Assembly by Operando Monitoring of the Local Proton Concentration during Water Oxidation.

ACS Mater Lett

December 2024

Analytical Chemistry-Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany.

Direct estimation of the reaction environment, e.g., local pH at the anode side of a membrane electrode assembly (MEA) of zero gap electrolyzer, is essential to understand possible key factors, which are influencing the sustainable operation of industrial electrolyzers.

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Background: Traditional self-reported measures in health science education often overlook the physiological processes underlying cognitive and emotional responses.

Purpose: This review aims to analyze the frequency, sensitivity, and utility of physiological markers in understanding cognitive and emotional dynamics in learning environments.

Methods: A systematic PubMed search identified 156 records, with 13 studies meeting inclusion criteria.

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Most qualitative health research is subject to ethics review and approval by a research ethics committee (REC). While many studies have identified the challenges that current ethics review practices pose to qualitative health research, there is currently a call to move the research focus from the shortcomings of ethics review practices to the possibilities for improvement. The aim of this grounded theory study was to identify possibilities for improvement of current ethics review practices which can count on endorsement from qualitative health researchers and members of REC alike.

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