1,400 results match your criteria: " Utrecht University[Affiliation]"

Background: Central nervous system (CNS) metastases are present in approximately 40% of patients with metastatic epidermal growth factor receptor-mutated (m+) non-small cell lung cancer (NSCLC). The EGFR-tyrosine kinase inhibitor osimertinib is a substrate of transporters ABCB1 and ABCG2 and metabolized by CYP3A4. We investigated relationships between single nucleotide polymorphisms (SNPs) 3435C>T, 421C>A and 34G>A, and and CNS treatment efficacy of osimertinib in m+ NSCLC patients.

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Invited review: Selective treatment of clinical mastitis in dairy cattle.

J Dairy Sci

June 2023

Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N 4N1; One Health at UCalgary, University of Calgary, AB, Canada T2N 4N1; Mastitis Network, Saint-Hyacinthe, QC, Canada J25 2M2. Electronic address:

Treatment of clinical mastitis (CM) and use of antimicrobials for dry cow therapy are responsible for the majority of animal-defined daily doses of antimicrobial use (AMU) on dairy farms. However, advancements made in the last decade have enabled excluding nonsevere CM cases from antimicrobial treatment that have a high probability of cure without antimicrobials (no bacterial causes or gram-negative, excluding Klebsiella spp.) and cases with a low bacteriological cure rate (chronic cases).

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Article Synopsis
  • The text discusses the increasing gene testing for amyotrophic lateral sclerosis (ALS), particularly for sporadic ALS (sALS), highlighting a lack of large studies on genetic variations associated with the disease.
  • It describes a research study that analyzed genetic data from over 6,000 sALS patients and over 2,400 controls to characterize genetic variability in 90 ALS-related genes using established criteria for interpretation.
  • The findings revealed that while some pathogenic variants were identified, a significant portion of the sALS patients had no detectable genetic clues, indicating the complexity of the genetic landscape of the disease.*
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Prevalence of extended-spectrum and AmpC β-lactamase-producing Escherichia coli in young calves on Dutch dairy farms.

J Dairy Sci

June 2023

Royal GD, PO Box 9, 7400 AA Deventer, the Netherlands; Department Population Health Sciences, Utrecht University, PO Box 80151, 3508 TD Utrecht, the Netherlands.

In young calves on dairy farms the animal prevalence of extended-spectrum and AmpC β-lactamase-producing Escherichia coli (ESBL/AmpC-EC) is significantly higher compared with the animal prevalence in young stock and dairy cows. Hitherto it was unknown at what age antimicrobial resistant bacteria appear for the first time in the gut of calves on dairy farms, and how long these infections persist. The aim of this study was to examine the prevalence of ESBL/AmpC-EC, the number of excreted ESBL/AmpC-EC (in cfu/g of feces), as well as the ESBL/AmpC genotypes in young dairy calves (0-21 d of age) and the variation of these parameters between calves of different ages.

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Article Synopsis
  • Hypertension is a major risk factor for cardiovascular disease, with studies suggesting that its impact may be more significant in women than in men, but the reasons for this difference are not fully understood.
  • Current observational studies face challenges like confounding factors and reverse causation, highlighting the need for better research methods to clarify sex differences in the effects of hypertension.
  • Mendelian randomization (MR) can offer reliable causal insights by using genetic variants to study these differences, potentially leading to improved personalized healthcare strategies and drug development aimed at tackling hypertension.
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Objective: To assess the evolution of neonatal brain injury noted on magnetic resonance imaging (MRI), develop a score to assess brain injury on 3-month MRI, and determine the association of 3-month MRI with neurodevelopmental outcome in neonatal encephalopathy (NE) following perinatal asphyxia.

Methods: This was a retrospective, single-center study including 63 infants with perinatal asphyxia and NE (n = 28 cooled) with cranial MRI <2 weeks and 2-4 months after birth. Both scans were assessed using biometrics, a validated injury score for neonatal MRI, and a new score for 3-month MRI, with a white matter (WM), deep gray matter (DGM), and cerebellum subscore.

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The ongoing COVID-19 pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is partly under control by vaccination. However, highly potent and safe antiviral drugs for SARS-CoV-2 are still needed to avoid development of severe COVID-19. We report the discovery of a small molecule, Z-Tyr-Ala-CHN, which was identified in a cell-based antiviral screen.

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Epigenome-Wide Association Studies of the Fractional Exhaled Nitric Oxide and Bronchodilator Drug Response in Moderate-to-Severe Pediatric Asthma.

Biomedicines

February 2023

Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology, and Genetics, Universidad de La Laguna (ULL), 38200 San Cristóbal de La Laguna, Spain.

Article Synopsis
  • * Researchers analyzed blood samples from 121 children with moderate-to-severe asthma to find DNAm markers linked to BDR and FeNO, using regression models to ensure accuracy while controlling for variables like age and sex.
  • * They identified specific DNA markers and differential regions related to FeNO and BDR, with findings indicating associations with allergic reactions and inflammation, potentially opening avenues for better understanding and management of asthma in pediatric patients.
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Article Synopsis
  • The study looked at how the brain's left and right sides might differ in people with schizophrenia compared to those without it, using brain scans from over 5,000 patients and 6,000 control subjects.
  • Researchers found that people with schizophrenia had slightly thinner areas in the left side of their brains, especially in certain regions, compared to those without the disorder.
  • The differences in brain structure might be linked to how schizophrenia affects brain functions, like language, but more research is needed to understand why they happen.
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Long-term Survival in Breast Cancer Patients Is Associated with Contralateral Parenchymal Enhancement at MRI: Outcomes of the SELECT Study.

Radiology

May 2023

From the Department of Radiology/Image Sciences Institute (M.A.A.R., B.H.M.v.d.V., M.A.V., R.M.P., K.G.A.G.) and Department of Epidemiology, Julius Center for Health Sciences and Primary Care (S.G.E.), University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands; Department of Radiology, Rijnstate Hospital, Arnhem, the Netherlands (C.M.); Department of Radiology, Amphia Hospital, Breda, the Netherlands (E.T.); Department of Radiology, Haaglanden Medical Center, The Hague, the Netherlands (E.G.C.); Department of Radiology and Nuclear Medicine, Maastricht University Medical Center+, Maastricht, the Netherlands (T.J.A.v.N.); GROW School for Oncology and Reproduction, Maastricht University, Maastricht, the Netherlands (T.J.A.v.N.); Department of Radiology, Catharina Hospital, Eindhoven, the Netherlands (F.H.J.); Department of Radiology, St. Antonius Hospital, Utrecht, the Netherlands (E.J.M.W.v.d.B.); Department of Radiology, Diakonessenhuis, Utrecht, the Netherlands (L.J.); Department of Radiology, Gelre Hospital, Apeldoorn, the Netherlands (F.v.R.); Department of Radiology, University Medical Center Groningen, Groningen, the Netherlands (M.D.D.); and Department of Research, Netherlands Comprehensive Cancer Organisation, Utrecht, the Netherlands (J.V.).

Article Synopsis
  • Multiple studies have indicated that high contralateral parenchymal enhancement (CPE) in breast MRI may improve long-term survival rates for patients with ER-positive, HER2-negative breast cancer, but more research is needed due to inconsistent findings.
  • This study aimed to validate the connection between CPE and long-term survival using a large group of women with specific breast cancer characteristics, examining overall survival (OS), recurrence-free survival (RFS), and distant RFS (DRFS).
  • Results showed that higher CPE was linked to better OS rates after 10 years, but it didn't significantly impact RFS or DRFS; additionally, the effect of endocrine therapy in relation to CPE couldn't be determined accurately.
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Article Synopsis
  • * It introduces StandardRat, a standardized fMRI acquisition protocol for rats that has been tested across 20 research centers to enhance data integration.
  • * The standardized protocol and processing pipeline improve the reliability of detecting functional connectivity patterns and are made publicly available to foster collaboration in the neuroimaging field.
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Hyperlipidaemia elicits an atypical, T helper 1-like CD4 T-cell response: a key role for very low-density lipoprotein.

Eur Heart J Open

March 2023

Department of Medical Biochemistry, Experimental Vascular Biology, Amsterdam Infection and Immunity, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, Netherlands.

Aims: Hyperlipidemia and T cell driven inflammation are important drivers of atherosclerosis, the main underlying cause of cardiovascular disease. Here, we detailed the effects of hyperlipidemia on T cells.

Methods And Results: In vitro, exposure of human and murine CD4+ T cells to very low-density lipoprotein (VLDL), but not to low-density lipoprotein (LDL) resulted in upregulation of Th1 associated pathways.

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Background: In dogs with a congenital extrahepatic portosystemic shunt (EHPSS), outcome after surgical attenuation is difficult to predict.

Objectives: Develop a minimally invasive test to predict outcome after surgical EHPSS attenuation and establish risk factors for postattenuation seizures (PAS).

Animals: Eighty-five client-owned dogs referred for surgical attenuation of a single EHPSS.

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Introduction: Early-onset fetal growth restriction (FGR) requires timely, often preterm, delivery to prevent fetal hypoxia causing stillbirth or neurologic impairment. Antenatal corticosteroids (CCS) administration reduces neonatal morbidity and mortality following preterm birth, most effectively when administered within 1 week preceding delivery. Optimal timing of CCS administration is challenging in early-onset FGR, as the exact onset and course of fetal hypoxia are unpredictable.

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Article Synopsis
  • Cerebral microbleeds increase the risk of both ischemic stroke and intracranial hemorrhage, complicating treatment choices for patients with atrial fibrillation on various antithrombotic therapies.
  • A study analyzed 7,839 patients, finding that microbleeds significantly raised the relative risk of intracranial hemorrhage (2.74 times) and ischemic stroke (1.29 times), particularly with combination therapies of anticoagulants and antiplatelets.
  • For patients on combination therapy, those with multiple microbleeds faced a higher absolute risk of intracranial hemorrhage compared to ischemic stroke, indicating a need for more research to develop effective preventive strategies.
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Article Synopsis
  • This study investigates the lack of clear guidelines for preventive surgery of ascending aortic aneurysms in elderly patients by analyzing patient data and comparing outcomes with non-elderly patients.
  • A total of 955 patients (724 non-elderly and 231 elderly) were examined, revealing that elderly patients had larger aortic diameters and more cardiovascular risk factors, but similar short-term mortality rates.
  • Five-year survival rates were significantly lower for elderly patients (81.4%) compared to non-elderly patients (93.9%), indicating that while immediate surgical outcomes are comparable, long-term survival may be a concern for the elderly.
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A Systematic Review of Chest Imaging Findings in Long COVID Patients.

J Pers Med

February 2023

Department of Pulmonary Medicine, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands.

Long COVID is the persistence of one or more COVID-19 symptoms after the initial viral infection, and there is evidence supporting its association with lung damage. In this systematic review, we provide an overview of lung imaging and its findings in long COVID patients. A PubMed search was performed on 29 September 2021, for English language studies in which lung imaging was performed in adults suffering from long COVID.

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Medullary Tegmental Cap Dysplasia: Fetal and Postnatal Presentations of a Unique Brainstem Malformation.

AJNR Am J Neuroradiol

March 2023

Sackler Faculty ofMedicine (M.G., K.K.H., L.G., D.L., T.L.-S.), Tel Aviv University, Tel Aviv, Israel.

Background And Purpose: Medullary tegmental cap dysplasia is a rare brainstem malformation, first described and defined by James Barkovich in his book from 2005 as an anomalous mass protruding from the posterior medullary surface. We describe the neuroimaging, clinical, postmortem, and genetic findings defining this unique malformation.

Materials And Methods: This is a multicenter, international, retrospective study.

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Universal beta-diversity-functioning relationships are neither observed nor expected.

Trends Ecol Evol

June 2023

Ecology and Biodiversity Group, Dept of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands.

Widespread evidence shows that local species richness (α-diversity) loss hampers the biomass production and stability of ecosystems. β-Diversity, namely the variation of species compositions among different ecological communities, represents another important biodiversity component, but studies on how it drives ecosystem functioning show mixed results. We argue that to better understand the importance of β-diversity we need to consider it across contexts.

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In a time of rapid global change, the question of what determines patterns in species abundance distribution remains a priority for understanding the complex dynamics of ecosystems. The constrained maximization of information entropy provides a framework for the understanding of such complex systems dynamics by a quantitative analysis of important constraints via predictions using least biased probability distributions. We apply it to over two thousand hectares of Amazonian tree inventories across seven forest types and thirteen functional traits, representing major global axes of plant strategies.

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What are the needs of frail older patients in the emergency department? A qualitative study.

Int Emerg Nurs

March 2023

University of Applied Sciences, Research Group for Older People Living at Home, PO Box 12011, 3501 AA Utrecht, the Netherlands. Electronic address:

Background: There is an increase in the number of frail elderly patients presenting to the emergency department. Diagnosis and treatment for this patient group is challenging due to multimorbidity, a-typical presentation and polypharmacy and requires specialised knowledge and competencies from healthcare professionals. We aim to explore the needs and preferences regarding emergency care in frail older patients based on their experiences with received care during Emergency Department admission.

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The Value of Current Meat Inspection and Food Chain Information of Dairy Cows in Relation to Findings and the Protection of Public Health: A Case for a More Risk-Based Meat Inspection.

Foods

February 2023

Institute for Risk Assessment Sciences, Department of Population Health Science, Faculty Veterinary Medicine, Utrecht University, P.O. Box 80175, 3508 TD Utrecht, The Netherlands.

In this study, the contribution of the (AM) inspection and the food chain information (FCI) to ensuring meat safety and public health was investigated, by evaluating the slaughterhouse findings of 223,600 slaughtered dairy cows in the Netherlands. The outcome of this study was that the (AM) and (PM) inspections have a substantial overlap, and that with regard to food safety and public health in over 99% of cases the PM could even be omitted on the basis of the AM. In this study, the data provided by the dairy farmers on the current FCI forms contributed little to nothing with regard to the outcomes of AM and PM inspection.

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Moving forward to achieve the ambitions of the European Water Framework Directive: Lessons learned from the Netherlands.

J Environ Manage

May 2023

Copernicus Institute of Sustainable Development, Utrecht University, PO Box 80115, 3508 TC, Utrecht, the Netherlands; Forest and Nature Conservation Policy Group, Wageningen University & Research, PO Box 47, 6700 AA Wageningen, the Netherlands.

The restoration and preservation of freshwater ecosystems is one of the prerequisites for a sustainable and fair future for all and therefore part of the United Nations Sustainable Development Goals (SDG 6). However, countries worldwide are facing a challenge to achieve this ambition by 2030. This paper focuses on the legal and governance challenges faced in the European context with regard to achieving water quality ambitions, using experiences from the Netherlands as a case study.

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Development and validation of a decision model for the evaluation of novel lung cancer treatments in the Netherlands.

Sci Rep

February 2023

Department of Epidemiology and Data Science, Amsterdam Public Health, Amsterdam UMC, Vrije Universiteit Amsterdam, de Boelelaan 1117, PO Box 7057, 1007 MB, Amsterdam, The Netherlands.

Article Synopsis
  • Recent advancements in molecular diagnostics and drug treatments have shifted lung cancer treatment from traditional platinum-based chemotherapy to more personalized approaches like targeted therapies and immunotherapies, though these options are expensive.
  • Traditional evaluation methods for treatment cost-effectiveness rely on randomized control trials (RCTs), which often don't reflect the real-world patient population who typically have worse prognoses.
  • This study developed a patient-level microsimulation model based on real-world data in the Netherlands to assess personalized treatment strategies for advanced non-squamous NSCLC, validating it by comparing simulated outcomes with actual patient survival rates.
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Design of OSMI-4 Analogs Using Scaffold Hopping: Investigating the Importance of the Uridine Mimic in the Binding of OGT Inhibitors.

ChemMedChem

April 2023

Department of Chemical Biology & Drug Discovery Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.

β-N-Acetylglucosamine transferase (OGT) inhibition is considered an important topic in medicinal chemistry. The involvement of O-GlcNAcylation in several important biological pathways is pointing to OGT as a potential therapeutic target. The field of OGT inhibitors drastically changed after the discovery of the 7-quinolone-4-carboxamide scaffold and its optimization to the first nanomolar OGT inhibitor: OSMI-4.

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