10,621 results match your criteria: "Radcliffe Department of Medicine ; University of Oxford ; Oxford[Affiliation]"

Background: While semaglutide, approved for type-2 diabetes mellitus (T2DM), is being investigated as a treatment for brain disorders, concerns over adverse neuropsychiatric events have emerged. More data are therefore needed to assess the effects of semaglutide on brain health. This study provides robust estimates of the risk of neurological and psychiatric outcomes following semaglutide use compared to three other antidiabetic medications.

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Stroke severity shapes extracellular vesicle profiles and their impact on the cerebral endothelial cells.

J Physiol

January 2025

Vascular Physiology Laboratory, Group of Research and Innovation in Vascular Health, Department of Basic Sciences, Faculty of Basic Sciences, Universidad del Bío-Bío, Chillán, Chile.

Ischaemic stroke is a leading cause of death and disability. Circulating extracellular vesicles (EVs) post-stroke may help brain endothelial cells (BECs) counter ischaemic injury. However data on how EVs from ischaemic stroke patients, considering injury severity, affect these cells are limited.

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Objectives: To assess characteristics and outcomes of children with suspected or confirmed infection requiring emergency transport and PICU admission and to explore the association between the 2024 Phoenix Sepsis Score (PSS) criteria and mortality.

Design: Retrospective analysis of curated data from a 2014-2016 multicenter cohort study.

Setting: PICU admission following emergency transport in South East England, United Kingdom, from April 2014 to December 2016.

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ATP-dependent chromatin remodeling protein ATRX is an essential regulator involved in maintenance of DNA structure and chromatin state and regulation of gene expression during development. ATRX was originally identified as the monogenic cause of X-linked α-thalassemia mental retardation (ATR-X) syndrome. Affected individuals display a variety of developmental abnormalities and skeletal deformities.

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Recent Advances in the Treatment of Coronary In-Stent Restenosis.

Rev Cardiovasc Med

December 2024

Department of Cardiology, Bern University Hospital, Inselspital, CH-3010 Bern, Switzerland.

In-stent restenosis (ISR) remains the predominant cause of stent failure and the most common indication for repeat revascularization. Despite technological advances in stent design, ISR continues to pose significant challenges, contributing to increased morbidity and mortality among patients undergoing percutaneous coronary interventions. In the last decade, intravascular imaging has emerged as an important method for identifying the mechanisms behind ISR and guiding its treatment.

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The association between adverse childhood experiences and adult cardiac function in the UK Biobank.

Eur Heart J Imaging Methods Pract

July 2024

William Harvey Research Institute, NIHR Barts Biomedical Research Centre, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK.

Aims: The importance of early life factors in determining health in later adulthood is increasingly recognized. This study evaluated the association of adverse childhood experiences (ACEs) with cardiovascular magnetic resonance (CMR) phenotypes.

Methods And Results: UK Biobank participants who had completed CMR and the self-reported questionnaire on traumatic childhood experiences were included.

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Myocardial ischaemia following COVID-19: a cardiovascular magnetic resonance study.

Int J Cardiovasc Imaging

December 2024

Institute of Cardiovascular and Metabolic Medicine, University of Leeds, and Leeds Teaching Hospitals NHS Trust, Leeds, UK.

The pathophysiology of myocardial injury following COVID-19 remains uncertain. COVID-HEART was a prospective, multicentre study utilising cardiovascular magnetic resonance (CMR) to characterise COVID-related myocardial injury. In this pre-specified analysis, the objectives were to examine (1) the frequency of myocardial ischaemia following COVID-19, and (2) the association between ischaemia and myocardial injury.

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The two most clinically important members of the flavivirus genus, Zika virus (ZIKV) and dengue virus (DENV) pose a significant public health challenge. They cause a range of diseases in humans, from hemorrhagic to neurological manifestations, leading to economic and social burden worldwide. Nevertheless, there are no approved antiviral drugs to treat these infections.

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Introduction: Adrenergic activation of protein kinase A (PKA) in cardiac muscle targets the sarcolemma, sarcoplasmic reticulum, and contractile apparatus to increase contractile force and heart rate. In the thin filaments of the contractile apparatus, cardiac troponin I (cTnI) Ser22 and Ser23 in the cardiac-specific N-terminal peptide (NcTnI: residues 1 to 32) are the targets for PKA phosphorylation. Phosphorylation causes a 2-3 fold decrease of affinity of cTn for Ca associated with a higher rate of Ca dissociation from cTnC leading to a faster relaxation rate of the cardiac muscle (lusitropy).

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Background: Blood pressure (BP) control following stroke is important but currently sub-optimal. This trial aimed to determine whether self-monitoring of hypertension with telemonitoring and a treatment escalation protocol, results in lower BP than usual care in people with previous stroke or transient ischaemic attack (TIA).

Methods: Unblinded randomised controlled trial, comparing a BP telemonitoring-based intervention with control (usual care) for hypertension management in 12 primary care practices in England.

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Background And Aims: The enteric nervous system (ENS), comprised of neurons and glia, regulates intestinal motility. Hirschsprung disease (HSCR) results from defects in ENS formation, yet while neuronal aspects have been extensively studied, enteric glia remain disregarded. This study aimed to explore enteric glia diversity in health and disease.

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Background: Glomerular diseases rank third among the causes of chronic kidney disease worldwide and in Indonesia, and its burden continues to increase, especially regarding the sociodemographic index. Kidney biopsy remains the gold standard for the diagnosis and classification of glomerular diseases. It is crucial for developing treatment plans, determining the degree of histologic changes, and identifying disease relapse.

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New evidence of cross-disease communication between heart and liver.

J Hepatol

December 2024

Oxford Centre for Diabetes Endocrinology and Metabolism (OCDEM), Churchill Hospital, Radcliffe Department of Medicine, University of Oxford, UK; Translational Gastroenterology and Liver Unit (TGLU), Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, UK. Electronic address:

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Addition of macrolide antibiotics for hospital treatment of community-acquired pneumonia.

J Infect Dis

December 2024

The National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, UK.

Background: Current guidelines recommend combining a macrolide with a β-lactam antibiotic for the empirical treatment of moderate-to-high severity community-acquired pneumonia (CAP); however macrolide use is associated with potential adverse events and antimicrobial resistance.

Methods: We analysed electronic health data from 8,872 adults in Oxfordshire, UK, hospitalised with CAP between 01-January-2016 and 19-March-2024, who received either amoxicillin or co-amoxiclav as initial treatment. We examined the effects of adjunctive macrolides on 30-day all-cause mortality, time to hospital discharge, and changes in Sequential Organ Failure Assessment (SOFA) score, using inverse probability treatment weighting to address confounding by baseline severity.

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H and P MR Spectroscopy to Assess Muscle Mitochondrial Dysfunction in Long COVID.

Radiology

December 2024

From the Oxford Centre for Clinical Magnetic Resonance Research (OCMR), Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK (L.E.M.F., M.P.C., M.J., A.S., Z.A., S.N., D.J.T., B.R., L.V.); Oncology and Haematology Centre, Churchill Hospital, Oxford, UK (A.S.); Axcella Therapeutics, Cambridge, Mass (K.A.); and Institute of Measurement Science, Slovak Academy of Sciences, Bratislava, Slovakia (L.V.).

Background Emerging evidence suggests mitochondrial dysfunction may play a role in the fatigue experienced by individuals with post-COVID-19 condition (PCC), commonly called long COVID, which can be assessed using MR spectroscopy. Purpose To compare mitochondrial function between participants with fatigue-predominant PCC and healthy control participants using MR spectroscopy, and to investigate the relationship between MR spectroscopic parameters and fatigue using the 11-item Chalder fatigue questionnaire. Materials and Methods This prospective, observational, single-center study (June 2021 to January 2024) included participants with PCC who reported moderate to severe fatigue, with normal blood test and echocardiographic results, alongside control participants without fatigue symptoms.

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Operationalizing the New Global Definition of ARDS: A Retrospective Cohort Study From South Africa.

CHEST Crit Care

December 2024

Division of Pulmonary, Allergy, and Critical Care (G. L. A.), University of Pennsylvania Perelman School of Medicine, Philadelphia, PA; the Division of Pulmonary and Critical Care Medicine (S. M. S.), University of Rochester Medical Center, Rochester, NY; the Department of Anaesthesia and Critical Care (A. R., Z. F., and M. T. D. S.), Greys Hospital, KwaZulu-Natal Department of Health, the Department of Anaesthesia and Critical Care (J. I.), Harry Gwala Regional Hospital, KwaZulu-Natal Department of Health, Pietermaritzburg, the Department of Anaesthesia and Critical Care (R. D. W. and M. T. D. S.), School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa; the Faculty Medicine and Pharmacy (R. D. W.), Vrije Universiteit Brussel (VUB), Brussels, Belgium; and the Department of Intensive Care (R. D. W.), John Radcliffe Hospital, Oxford University Trust Hospitals, Oxford, England.

Background: A proposed new global definition of ARDS seeks to update the Berlin definition and account for nonintubated ARDS and ARDS diagnoses in resource-variable settings.

Research Question: How do ARDS epidemiologic characteristics change with operationalizing the new global definition of ARDS in a resource-limited setting?

Study Design And Methods: We performed a real-use retrospective cohort study among adult patients meeting criteria for the Berlin definition of ARDS or the global definition of ARDS at ICU admission in two public hospitals in the KwaZulu-Natal Department of Health, South Africa, from January 2017 through June 2022.

Results: Among 5,760 adults (aged ≥ 18 years) admitted to the ICU, 2,027 patients (35.

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Tumour content plays a pivotal role in directing the bioinformatic analysis of molecular profiles such as copy number variation (CNV). In clinical application, tumour purity estimation (TPE) is achieved either through visual pathological review [conventional pathology (CP)] or the deconvolution of molecular data. While CP provides a direct measurement, it demonstrates modest reproducibility and lacks standardisation.

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Study Question: How does pre-diagnosis use of hospital care differentiate between women later diagnosed with endometriosis and age-matched controls without a diagnosis?

Summary Answer: Women with hospital-diagnosed endometriosis had more frequent hospital contacts in the 10 years leading up to the diagnosis compared to women without a diagnosis of endometriosis, and the contacts were related to registered diagnoses in nearly all of the included ICD-10 chapters for the entire period.

What Is Known Already: Only a few studies have investigated the utilization of health care among women with endometriosis in the time before diagnosis, but current research shows that women with endometriosis have a higher utilization compared to women without diagnosed endometriosis. To our knowledge, no study has investigated the type of contact related to the higher utilization by using the ICD-10 diagnoses registered to the hospital contact.

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Guillain-Barré syndrome.

Nat Rev Dis Primers

December 2024

Department of Neurology, Erasmus University Medical Center, Rotterdam, The Netherlands.

Guillain-Barré syndrome (GBS) is a rare immune-mediated polyradiculoneuropathy. Patients typically develop rapidly progressive weakness and sensory deficits that can result in complete paralysis requiring mechanical ventilation. GBS is usually a monophasic disease in which an aberrant immune response to an infection or other trigger damages the peripheral nerves.

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Background: Hypertension is a key risk factor for death and disability, and blood pressure reduction is associated with significant reductions in cardiovascular risk. Large trials have shown that interventions including self-monitoring of blood pressure can reduce blood pressure but real-world data from wider implementation are lacking.

Aim: The self-monitoring and management service evaluation in primary care (SHIP) study will evaluate a novel digital intervention for hypertension management and medication titration platform ("Hypertension-Plus") that is currently undergoing initial implementation into primary care in several parts of the UK.

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Bestrophin-4 relays HES4 and interacts with TWIST1 to suppress epithelial-to-mesenchymal transition in colorectal cancer cells.

Elife

December 2024

Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, West China Hospital, Sichuan University, Chengdu, China.

Bestrophin isoform 4 () is a newly identified subtype of the calcium-activated chloride channel family. Analysis of colonic epithelial cell diversity by single-cell RNA-sequencing has revealed the existence of a cluster of + mature colonocytes in humans. However, if the role of is involved in regulating tumour progression remains largely unknown.

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Introduction: Mild sleep-disordered breathing (mSDB) in children is associated with both neurobehavioral morbidity and reduced quality of life (QOL). However, the association between symptom burden and QOL with executive function is not well understood, and it is not known whether QOL and symptom burden may help identify children with neurocognitive dysfunction.

Objective: To assess associations among executive function, QOL, and symptom burden in children with mSDB.

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The isolation of VCAM-1 endothelial cell-derived extracellular vesicles using microfluidics.

Extracell Vesicles Circ Nucl Acids

February 2024

Center for Engineering in Medicine & Surgery, Massachusetts General Hospital Cancer Center, Harvard Medical School, Charlestown - Boston, MA 02129, USA.

Vascular cell adhesion molecule-1 (VCAM-1) endothelial cell-derived extracellular vesicles (EC-EVs) are augmented in cardiovascular disease, where they can signal the deployment of immune cells from the splenic reserve. Endothelial cells in culture activated with pro-inflammatory tumor necrosis factor-α (TNF-a) also release VCAM-1 EC-EVs. However, isolating VCAM-1 EC-EVs from conditioned cell culture media for subsequent in-depth analysis remains challenging.

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