1,544,200 results match your criteria: "Germany; West German Proton Therapy Centre Essen WPE[Affiliation]"

Using photoswitchable molecules to manipulate supramolecular interactions under light illumination has driven advancements in numerous fields, allowing for the strategic alteration of molecular systems. However, integrating the moiety responsible for these interactions into the photochromic scaffold can be complex and may hamper the switching efficiency. We thus explored a simple class of organic molecules, namely thiosemicarbazones, featuring both a photoisomerizable C[double bond, length as m-dash]N double bond and a thiourea moiety capable of hydrogen bonding.

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Although supported Mo-containing catalysts have been extensively investigated in the metathesis of ethylene with 2-butene to propene, the mechanisms of the formation and transformation of catalytically active Mo-carbenes in the course of the reaction are still not fully understood. The difficulties arise because only a tiny fraction of MoO species can form Mo-carbenes , making the detection of the latter by spectroscopic means very unlikely. Herein, purposefully designed steady-state and transient experiments including their kinetic evaluation and density functional theory calculations enabled us to elucidate mechanistic and kinetic details of the above reaction-induced processes in the metathesis reaction over a Mo/P/SiO catalyst at 50 °C.

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Background: While widefield microscopy has long been constrained by out-of-focus scattering, advancements have generated a solution in the form of confocal laser scanning microscopy (cLSM) and optical sectioning microscopy using structured illumination (OSM). In this study, we aim to investigate, using microglia branching, if cLSM and OSM can produce images with comparable morphological characteristics.

Results: By imaging the somatosensory microglia from a tissue slice of a 3-week-old mouse and establishing morphological parameters that characterizes the microglial branching pattern, we were able to show that there is no difference in total length of the branch tree, number of branches, mean branch length and number of primary to terminal branches.

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Background & Aims: Biliary abnormalities in autoimmune hepatitis (AIH) and interface hepatitis in primary biliary cholangitis (PBC) occur frequently, and misinterpretation may lead to therapeutic mistakes with a negative impact on patients. This study investigates the use of a deep learning (DL)-based pipeline for the diagnosis of AIH and PBC to aid differential diagnosis.

Methods: We conducted a multicenter study across six European referral centers, and built a library of digitized liver biopsy slides dating from 1997 to 2023.

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NO-sensitive guanylyl cyclase (NO-GC) is involved in the (patho)physiology of the mammalian heart. However, little is known about the individual cardiac cell types that express NO-GC and the role of the enzyme in cardiac fibrosis. Here, we describe the cellular expression of NO-GC in healthy and fibrotic murine myocardium; these data were compared with scRNA-seq data.

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Coinfection of and porcine circovirus type 3 is linked to reproductive failure in pig farms.

Vet World

November 2024

Department of Infectious Diseases and Veterinary Public Health, Faculty of Animal Science and Veterinary Medicine, Nong Lam University, HCMC, Vietnam.

Background And Aim: Reproductive disorders in swine herds pose significant challenges to pig breeding due to both infectious and non-infectious factors. In large-scale pig farming, coinfections are increasingly common, affecting sow health and herd productivity. This study aimed to determine occurrence and coinfection patterns of s and porcine circovirus type 3 in Vietnamese pig farms and to evaluate their association with reproductive disorders and clinical signs in affected herds.

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The natural population of have not been genetically enumerated due to a lack of genome sequence information or robust species-specific molecular marker. The present study was conducted to develop and validate genome-wide de novo simple sequence repeat (SSRs) markers in through shallow-pass genome sequencing. The genome sequence data of about 13 Gb was generated using Illumina technology, and high-quality sequence reads were de novo assembled into 1,390,995 contigs with GC content 42.

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Aim: To evaluate the short-term efficacy of XEN45 Gel Stent (XEN) implantation for primary open angle glaucoma (POAG) and pseudoexfoliation (PEX) glaucoma across two university eye clinics, aiming to assess the impact of varying center-specific protocols during the first postoperative year.

Methods: We retrospectively examined 282 patients (183 in center 1, 99 in center 2), who underwent XEN microstent implantation for uncontrolled POAG or PEX glaucoma. Parameters including intraocular pressure (IOP), IOP-lowering medication count, best corrected visual acuity (BCVA), and postoperative complications were evaluated over 12mo.

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The Health and Health Insurance Implications of Climate Change in Sub-Saharan Africa: A Narrative Review.

Public Health Rev

January 2025

openIMIS Global Initiative, Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), Bonn, Germany.

Objectives: This paper aims to provide a narrative review of the implications of climate change on health and health insurance in sub-Saharan Africa.

Methods: A comprehensive research was employed to carry out a complete narrative study on the subject. Thus, since September 2022 we searched for literature on the relationships between climate change, health, and health insurance on PubMed over an unbounded period.

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Au-Decorated TiC MXene Sensor for Enhanced Detection of Gaseous Toxins (CO, COCl, HS, NH, NO): A DFT Study.

ACS Omega

January 2025

H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan.

The rising level of toxic gases in the environment poses a high demand for efficient gas sensing materials. MXenes, an emerging class of two-dimensional (2D) materials, have gained significant interest in this area for having an active-site rich structure, tunable surface properties, and remarkable stability. Herein, an extensive density functional theory (DFT) study is conducted to investigate the sensing properties of pristine and Au-functionalized TiC MXene for five toxic gas molecules: CO, COCl, HS, NH, and NO.

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This study investigates the chemical, physical, and magnetic properties of Mn-Al-C type magnets, focusing on their corrosion resistance. The hot compaction process is used for densification, producing isotropic magnets. Microstructural analysis reveals undesirable features, such as phase decomposition and deformation.

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Here, we investigate the interactions between five representative gaseous analytes and two poly(ionic liquids) (PILs) based on the sulfopropyl acrylate polyanion in combination with the alkylphosphonium cations, P and P, and their nanocomposites with fullerenes (C, C) to reveal the potential of PILs as sensitive layers for gas sensors. The gaseous analytes were chosen based on their molecular size (all of them containing two carbon atoms) and variation of functional groups: alcohol (ethanol), nitrile (acetonitrile), aldehyde (acetaldehyde), halogenated alkane (bromoethane), and carboxylic acid (acetic acid). The six variations of PILs-PSPA (), PSPA + C ( + C), PSPA + C ( + C), and PSPA (), PSPA + C ( + C), PSPA + C ( + C)-were characterized by UV-vis and Raman spectroscopy, and their interactions with each gaseous analyte were studied using electrochemical impedance spectroscopy.

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Aims: Ischaemic mitral regurgitation (MR) is a dynamic condition influenced by global and regional left ventricular remodelling as well as mitral valvular deformation. Exercise testing plays a substantial role in assessing the haemodynamic relevance of MR and is recommended by current guidelines. We aimed to assess the prevalence, haemodynamic consequences, and prognostic impact of dynamic MR using isometric handgrip exercise.

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Quasi-Simultaneous Identification of Polar and Neutral Lipids in Mass Spectrometry by kHz Switching of Electrospray and Plasma Ionization.

Anal Chem

January 2025

Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Bunsen-Kirchhoff-Straße 11, D-44139 Dortmund, Germany.

The identification of polar and neutral lipid species as biomarkers in complex biological samples is a key task in clinical and life sciences. Electrospray and plasma-based ionization techniques are necessary to cover the full range of lipidomes, owing to their limited molecular polarity ranges. However, combining both to generate hybrid spectra is difficult without averaging spectra, as electrospray and plasma sources operate under vastly different conditions.

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Relaxin mimetic in pulmonary hypertension associated with left heart disease: Design and rationale of Re-PHIRE.

ESC Heart Fail

January 2025

Department of Cardiology, Pulmonology, and Intensive Care Medicine, Center for Molecular Medicine Cologne (CMMC), Cologne Cardiovascular Research Center (CCRC), Medical Faculty, University of Cologne, Cologne, Germany.

Aims: Despite receiving guideline-directed medical heart failure (HF) therapy, patients with pulmonary hypertension associated with left heart disease (PH-LHD) experience higher mortality and hospitalization rates than the general HF population. AZD3427 is a functionally selective, long-acting mimetic of relaxin, a hormone that has the potential to induce vasodilation and prevent fibrosis. In a phase 1b study conducted in patients with HF, AZD3427 demonstrated a favourable safety and pharmacokinetic profile.

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Catalyst for change: Psilocybin's antidepressant mechanisms-A systematic review.

J Psychopharmacol

January 2025

Division of Clinical Psychological Intervention, Freie Universität Berlin, Berlin, Germany.

Background: Recent clinical trials suggest promising antidepressant effects of psilocybin, despite methodological challenges. While various studies have investigated distinct mechanisms and proposed theoretical opinions, a comprehensive understanding of psilocybin's neurobiological and psychological antidepressant mechanisms is lacking.

Aims: Systematically review potential antidepressant neurobiological and psychological mechanisms of psilocybin.

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To test whether the contemporary robot-assisted nephroureterectomy (RNU) is associated with more favorable in-hospital outcomes than historical RNU, relative to the same endpoints in open NU (ONU). Within the National Inpatient Sample (2008-2019), we identified RNU and ONU patients. Multivariable logistic and Poisson regression models were fitted.

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Immediately after invading their chosen host cell, the mature human erythrocyte, malaria parasites begin to export an array of proteins to this compartment, where they initiate processes that are prerequisite for parasite survival and propagation, including nutrient import and immune evasion. One consequence of these activities is the emergence of novel adhesive phenotypes that can lead directly to pathology in the human host. To identify parasite proteins involved in this process, we used modern genetic tools to target genes encoding 15 exported parasite proteins, selected by an in silico workflow.

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The oxidative pentose phosphate pathway (OPPP) plays an important role for the generation of reducing power in all eukaryotes. In plant cells the OPPP operates in several cellular compartments, but as full cycle only in the plastid stroma where it is essential. As suggested by our recent results, OPPP reactions are also mandatory inside peroxisomes, at least during fertilisation.

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Background: The objective of the in vitro study was to evaluate the impact of two adhesive removal techniques on the surface roughness of the human enamel surface using laser scanning confocal microscopy (LSCM).

Methods: Forty healthy first upper molar teeth were included in this experiment (20 teeth per each group). T0 measurement of surface roughness parameter of the teeth were conducted using LSCM.

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