51,139 results match your criteria: "Leiden University Medical Center; V.Orlova@lumc.nl.[Affiliation]"
Discov Oncol
January 2025
Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Introduction: Colorectal cancer (CRC) is the second most common cause of cancer-related deaths globally. The gut microbiota, along with adenomatous polyps (AP), has emerged as a plausible contributor to CRC progression. This study aimed to scrutinize the impact of the FadA antigen derived from Fusobacterium nucleatum on the expression levels of the ANXA2 ceRNA network and assess its relevance to CRC advancement.
View Article and Find Full Text PDFJ Eat Disord
January 2025
GGZ Rivierduinen Eating Disorders Ursula, Sandifortdreef 19, 2333 AK, Leiden, The Netherlands.
Introduction: Overvaluation of shape and weight is a critical component in understanding and diagnosing eating disorders. While the transdiagnostic model states that overvaluation of shape and weight is the core pathology of all eating disorders, this concept is not a criterion for binge-eating disorder. The lack of recognition of overvaluation of shape and weight may lead to overlooking, and consequently failure to address this construct during treatment.
View Article and Find Full Text PDFBMC Public Health
January 2025
Department of Public Health and Primary Care, Leiden University Medical Centre, Hippocratespad 21, Leiden, Netherlands.
Background: eHealth literacy (eHL) is positively associated with health-related behaviors and outcomes. Previous eHL studies primarily collected data from online users and seldom focused on the general population in low- and middle-income countries (LMIC). Additionally, knowledge about factors that affect eHL is limited.
View Article and Find Full Text PDFSci Rep
January 2025
Hubrecht Institute-KNAW and University Medical Center Utrecht, Utrecht, The Netherlands.
Pseudomonas aeruginosa is a Gram-negative bacterium that is notorious for airway infections in cystic fibrosis (CF) subjects. Bacterial quorum sensing (QS) coordinates virulence factor expression and biofilm formation at population level. Better understanding of QS in the bacterium-host interaction is required.
View Article and Find Full Text PDFMethods Cell Biol
January 2025
Pathology, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:
In recent years, significant advancements have been achieved in the development of multiplex imaging methodologies for immunophenotyping, enabling a comprehensive characterization of the complexity of tumor microenvironments. Imaging mass cytometry combines the detection of over 40 cellular targets with spatial information, enabling the identification of not only which cells are present in a tissue but also their localization relative to each other. Here, we present an easy-to-implement imaging mass cytometry workflow that ranges from antibody selection and testing to running a full panel.
View Article and Find Full Text PDFMethods Cell Biol
January 2025
Division of Tumor Biology and Immunology, The Netherlands Cancer Institute, Amsterdam, The Netherlands; Department of Immunology, Leiden University Medical Center, Leiden, The Netherlands; Oncode Institute, Utrecht, The Netherlands. Electronic address:
Neutrophils are pivotal in orchestrating tumor-induced systemic inflammation and are increasingly recognized for their critical involvement in both the initiation and progression of cancer. A fundamental facet of neutrophil biology is their migratory capacity, which enables them to extravasate and infiltrate tumors in other tissues, where they carry out essential effector functions. Unraveling the intricate mechanisms of neutrophil motility and migration is crucial for comprehending immune responses and inflammatory processes, shedding light on their substantial contribution to cancer progression.
View Article and Find Full Text PDFBiologicals
January 2025
Centre for Human Drug Research (CHDR), Leiden, the Netherlands; Leiden University Medical Center (LUMC), Leiden, the Netherlands.
Inno4Vac, a public-private partnership funded by the IMI2/EU/EFPIA Joint Undertaking (IMI2 JU), brings together academic institutions, SMEs, and pharmaceutical companies to accelerate and de-risk vaccine development. The project has made significant strides in the selection and production of challenge agents for influenza, respiratory syncytial virus (RSV), and toxigenic Clostridioides difficile for controlled human infection model studies (CHIMs). A regulatory workshop held on March 20, 2024, addressed the standardisation of clinical procedures, ethical considerations, endpoints, and data integrity, highlighting the ongoing initiatives related to these CHIMs.
View Article and Find Full Text PDFJ Pediatr Surg
January 2025
The Center for Fetal and Placental Research, Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center (CCHMC), 3333 Burnet Avenue, Cincinnati, OH 45229, USA; Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center (CCHMC), 3333 Burnet Avenue, Cincinnati, OH 45229, USA; University of Cincinnati College of Medicine, 3230 Eden Ave, Cincinnati, OH 45267, USA. Electronic address:
Introduction: Perinatal management of gastroschisis remains a subject of substantial research. Current models, including teratogenic, genetic, and surgical approaches, often fail to accurately replicate gastroschisis, exhibiting limitations such as inaccurate phenotyping, low success rates, high mortality, lack of scientific validation, and significant technical challenges. Refined disease models are essential for improving the understanding of GS.
View Article and Find Full Text PDFBJOG
January 2025
Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Obstetrics and Gynecology, Nijmegen, The Netherlands.
Objective: To compare menopause-related quality of life (QoL) after risk-reducing salpingectomy (RRS) versus risk-reducing salpingo-oophorectomy (RRSO) until 3 years of post-surgery.
Design: A prospective study (TUBA study) with treatment allocation based on patients' preference. Data were collected pre-surgery and at 3 months, 1 and 3 years of post-surgery.
Brain Spine
October 2024
Department of Neurosurgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands.
Introduction: The optimal treatment for recurrent glioblastoma patients remains not well-defined in international guidelines. On top of that, the availability of national guidelines is uncharted.
Research Question: This study aimed to investigate the availability of national guidelines on the diagnosis and treatment of adult glioma throughout Europe, specifically focusing on recurrent glioblastoma.
Eur J Immunol
January 2025
Department of Obstetrics and Gynecology, Erasmus MC, Rotterdam, The Netherlands.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in the placenta can lead to fetal distress and demise, characterized by severe trophoblast necrosis, chronic histiocytic intervillositis (CHI), and massive perivillous fibrin deposition. We aimed to uncover spatial immune-related protein changes in SARS-CoV-2 placentitis compared with CHI placentas and uncomplicated pregnancies to gain insight into the underlying pathophysiological mechanisms. Placentas were retrospectively collected from cases with SARS-CoV-2 placentitis resulting in fetal distress/demise (n = 9), CHI (n = 9), and uncomplicated term controls (n = 9).
View Article and Find Full Text PDFObes Surg
January 2025
Department of Surgery, WeightWorks Clinics, Amersfoort, The Netherlands.
Pharmacoepidemiol Drug Saf
February 2025
Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, The Netherlands.
Purpose: Fluoroquinolones are antibiotics associated with adverse events that prompted the European Medicines Agency to implement risk minimization measures (RMMs) in 2018/19 and 2020. Our aim is to assess the RMMs' impact on antibiotic prescriptions in primary care during 2014-2023.
Methods: We assessed antibiotic prescriptions using CPRD GOLD (the United Kingdom, UK) and PHARMO (the Netherlands, NL).
J Gerontol A Biol Sci Med Sci
January 2025
Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands.
Chronological age is a major risk factor for numerous diseases. However, chronological age does not capture the complex biological aging process. the difference between the chronological age and biologically driven aging could be more informative in reflecting health status.
View Article and Find Full Text PDFEur J Immunol
January 2025
Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
Many human autoimmune diseases (AIDs) are hallmarked by the presence and persistence of autoreactive B-cells. While autoreactive B-cells may frequently encounter antigens, the signals required to balance and maintain their activation and survival are mostly unknown. Understanding such signals may be important for strategies aimed at eliminating human B-cell autoreactivity.
View Article and Find Full Text PDFJ Pineal Res
January 2025
Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.
Circadian clocks in the body drive daily cycles in physiology and behavior. A master clock in the brain maintains synchrony with the environmental day-night cycle and uses internal signals to keep clocks in other tissues aligned. Work in cell cultures uncovered cyclic changes in tissue oxygenation that may serve to reset and synchronize circadian clocks.
View Article and Find Full Text PDFEuropace
January 2025
Department of Clinical Sciences, Lund University, Malmö, Sweden.
Background: Orthostatic hypotension (OH) is an important differential diagnosis in unexplained syncope. Neurogenic OH (nOH) has been postulated to differ from non-neurogenic OH (non-nOH), yet pathophysiological differences are largely unexplored. We aimed to investigate etiology and tilt table test (TTT)-induced hemodynamic responses in symptomatic OH patients.
View Article and Find Full Text PDFSemin Immunopathol
January 2025
Gottfried Schatz Research Center, Division of Cell Biology, Histology and Embryology, Medical University of Graz, Graz, Austria.
Microchimerism is defined as the presence of a small population of genetically distinct cells within a host that is derived from another individual. Throughout pregnancy, maternal and fetal cells are known to traffic across the feto-maternal interface and result in maternal and fetal microchimerism, respectively. However, the routes of cell transfer, the molecular signaling as well as the timing in which trafficking takes place are still not completely understood.
View Article and Find Full Text PDFJAMA Netw Open
January 2025
Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, the Netherlands.
Importance: Active surveillance (AS) for patients with prostate cancer (PC) often includes fixed repeat prostate biopsies that do not account for the varying risk of reclassification to significant disease. Given the invasive nature and potential complications of biopsies, a personalized approach is needed to balance the burden of biopsies with the risk of missing disease progression.
Objective: To develop and externally validate a dynamic model that predicts an individual's risk of PC reclassification during AS.
Blood Adv
January 2025
Department of Internal Medicine, Division of Thrombosis and Hemostasis, Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, The Netherlands.
Treatment options for the bleeding disorder von Willebrand disease type 2B (VWD2B) are insufficient and fail to address the negative effects of circulating mutant von Willebrand factor (VWF). The dominant-negative nature of VWD2B makes functionally defective VWF an interesting therapeutic target. Previous in vitro studies have demonstrated the feasibility of allele-selective silencing of mutant VWF using small interfering RNAs (siRNAs) targeting common single nucleotide polymorphisms (SNPs) in the human VWF gene, an approach that can be applied irrespective of the disease-causing VWF mutation.
View Article and Find Full Text PDFJAMA
January 2025
Director, Medical News & Perspectives, JAMA.
Nat Med
January 2025
Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, Wallenberg Laboratory, University of Gothenburg, Gothenburg, Sweden.
Gut
January 2025
Inflammatory Bowel Disease Centre, Department of Gastroenterology and Hepatology, Radboud University Medical Centre, Nijmegen, The Netherlands
Background: It remains unclear if the increased colorectal neoplasia detection rate in inflammatory bowel disease (IBD) by high-definition (HD) dye-based chromoendoscopy compared with HD white-light endoscopy is due to enhanced contrast or increased inspection times. Longer withdrawal times may yield similar neoplasia detection rates as found by HD chromoendoscopy.
Objective: To compare colorectal neoplasia detection rates for HD white-light endoscopy with segmental re-inspection and HD chromoendoscopy, using single-pass HD white-light endoscopy as an additional control group.
BMJ Ment Health
January 2025
Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, The Netherlands.
Background: Traumatic brain injury (TBI) is associated with an increased risk of major depressive disorder (MDD) and post-traumatic stress disorder (PTSD). We aimed to identify predictors and develop models for the prediction of depression and PTSD symptoms at 6 months post-TBI.
Methods: We analysed data from the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury study.
Arch Dis Child Fetal Neonatal Ed
January 2025
Neonatology, Leiden University Medical Centre, Leiden, The Netherlands.
Objective: To describe the use and nationwide variation of red blood cell (RBC) transfusions in neonatal intensive care units (NICUs) following the introduction of the revised national transfusion guideline in 2019.
Design And Patients: We randomly selected neonates born below 32 weeks' gestation admitted to any NICU in the Netherlands in 2020 to include in our retrospective observational cohort study.
Main Outcome Measures: Main outcome measures were the number of neonates receiving at least one transfusion, and the number of transfusions per transfused neonate.