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Modelling the Impact of Argon Atoms on a WO Surface by Molecular Dynamics Simulations.
Molecules
December 2024
Institute of Ion Physics and Applied Physics, University of Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.
Machine learning potential energy functions can drive the atomistic dynamics of molecules, clusters, and condensed phases. They are amongst the first examples that showed how quantum mechanics together with machine learning can predict chemical reactions as well as material properties and even lead to new materials. In this work, we study the behaviour of tungsten trioxide (WO) surfaces upon particle impact by employing potential energy surfaces represented by neural networks.
View Article and Find Full Text PDFDipole Potential of Monolayers with Biologically Relevant Lipid Compositions.
Molecules
December 2024
Coimbra Chemistry Center, Institute of Molecular Sciences (CQC-IMS), University of Coimbra, 3004-535 Coimbra, Portugal.
The membrane dipole potential that arises from the interfacial water and constitutive dipolar groups of lipid molecules modulates the interaction of amphiphiles and proteins with membranes. Consequently, its determination for lipid mixtures resembling the existing diversity in biological membranes is very relevant. In this work, the dipole potentials of monolayers, formed at the air-water interface, from pure or mixed lipids (1-palmitoyl-2-oleoyl--glycero-3-phosphocholine (POPC), 1-palmitoyl-2-oleoyl--glycero-3-phosphoethanolamine (POPE), 1-palmitoyl-2-oleoyl--glycero-3-phosphatidyserine (POPS), sphingomyelin (SpM) and cholesterol) were measured and correlated with the mean area per lipid.
View Article and Find Full Text PDFBeneficial Actions of 4-Methylumbelliferone in Type 1 Diabetes by Promoting β Cell Renewal and Inhibiting Dedifferentiation.
Biomedicines
December 2024
Department of Endocrinology, Second Affiliated Hospital of Air Force Military Medical University, Xi'an 710038, China.
: This study aims to investigate the effects of 4-methylumbelliferone (4-MU) on islet morphology, cell phenotype and function, and to explore possible mechanisms of β cell regeneration. : The Type 1 diabetes (T1D) model was induced by continuous dose injection of streptozotocin (STZ), and mice were treated with 4-MU for 3 weeks. Plasma insulin level, islet cell phenotype and immune infiltration were determined by IPGTT, ELISA, HE and immunofluorescence.
View Article and Find Full Text PDFNeurological Biomarker Profiles in Royal Canadian Air Force (RCAF) Pilots and Aircrew.
Brain Sci
December 2024
Canadian Forces Environmental Medicine Establishment, Toronto, ON M3K 2C9, Canada.
Background/objectives: Military aviators can be exposed to extreme physiological stressors, including decompression stress, G-forces, as well as intermittent hypoxia and/or hyperoxia, which may contribute to neurobiological dysfunction/damage. This study aimed to investigate the levels of neurological biomarkers in military aviators to assess the potential risk of long-term brain injury and neurodegeneration.
Methods: This cross-sectional study involved 48 Canadian Armed Forces (CAF) aviators and 48 non-aviator CAF controls.
Unveiling the immunomodulator role of plasma oxidized lipids in SA-AKI progression: a CRRT perspective.
Front Physiol
December 2024
Department of Nephrology, Tangdu Hospital, The Fourth Military Medical University, Air Force Medical University, Xi'an, Shaanxi Province, China.
Background: Plasma oxidized lipids are intimately linked to immune regulation as bioactive mediators. However, it is not clear whether they are related to the progression of sepsis-associated acute kidney injury (SA-AKI) and the effect of continuous renal replacement therapy (CRRT). This study intends to explore the changes in certain oxidized lipid during CRRT treatment and their correlation with the immune microenvironment and prognosis by analyzing plasma oxidative lipidomics.
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