17,439 results match your criteria: "Vu University Medical Center[Affiliation]"

Basic Science and Pathogenesis.

Alzheimers Dement

December 2024

Alzheimer Center Limburg, School for Mental Health and Neuroscience, Maastricht University, Maastricht, Netherlands.

Background: Structural and functional changes of the choroid plexus (ChP) have been reported in Alzheimer's disease (AD). Nonetheless, the role of the ChP in the pathogenesis of AD remains largely unknown. We aim to unravel the relationship between ChP functioning and core AD pathogenesis using a unique proteomic approach in mice and humans.

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Clinical Manifestations.

Alzheimers Dement

December 2024

Clinical Memory Research Unit, Department of Clinical Sciences Malmö, Faculty of Medicine, Lund University, Lund, Sweden, Malmö, Sweden.

Background: The Amsterdam Instrumental ADL Questionnaire (A-IADL-Q) has shown promising performance in detecting subtle impairment in IADL independency. Importantly, it has not been validated in older people in a primary care setting, i.e.

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Neural invasion is one of the most common routes of invasion in pancreatic cancer and it is responsible for the high rate of tumor recurrence after surgery and the pain generation associated with pancreatic cancer. Several molecules implicated in neural invasion are also responsible for pain onset including NGF belonging to the family of neutrophins. NGF released by cancer cells can sensitize sensory nerves which in turn results in severe pain.

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Lipoid pneumonia is a rare entity most often associated with inhalation of foreign material (i.e. "fire-eater's lung"), silicone injection, and severe trauma.

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Investigating the Immunomodulatory Impact of Fecal Bacterial Membrane Vesicles and Their IgA Coating Patterns in Crohn's Disease Patients.

Int J Mol Sci

December 2024

Department of Gastroenterology/Hepatology, Institute of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Center+, 6229 HX Maastricht, The Netherlands.

The human intestinal tract contains trillions of bacteria that coexist in a symbiotic relationship with human cells. Imbalances in this interaction can lead to disorders such as Crohn's disease (CD). Bacteria membrane vesicles (MVs), which are released by almost all bacteria, have been demonstrated to play a crucial role in bacteria-host interactions.

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A convenient viral transduction based method for advanced multi-engineering of primary human (CAR) T-cells.

J Genet Eng Biotechnol

December 2024

Department of Hematology, Amsterdam UMC, Location VU University Medical Center, Cancer Center Amsterdam, Room CCA3.38, De Boelelaan 1117, Amsterdam 1081 HV, the Netherlands.

The past decades have illustrated the power of T-cell engineering in the development of new and successful cell therapies, such as chimeric antigen receptor (CAR) T-cells. Despite clinical success in hematological malignancies, it also becomes increasingly clear that additional T-cell engineering will be required to improve efficacy and safety and expand the application to solid tumors. Engineering is most often achieved by viral delivery of transgenes, however, viral vector capacity limitations make efficient and reproducible generation of multi transgene expressing T-cell therapeutics technically challenging.

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Detecting Colorectal Neoplasia Using Specific Fecal Fluorogenic Protease-Sensitive Substrates: A Pilot Study.

Anal Chem

December 2024

Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands.

Background: identification and removal of advanced adenomas (AA) reduce colorectal cancer (CRC) incidence and potentially mortality. CRC screening often uses fecal immunochemical testing to select high-risk individuals for colonoscopy, despite its low sensitivity for AA and relatively high false-positivity rate. Previous studies have linked proteases to CRC development through their ability to facilitate angiogenesis and immunoregulation.

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Aims/hypothesis: Our aim was to assess sex differences in the efficacy of angiotensin receptor blockers (i.e. losartan and irbesartan) on kidney and cardiovascular outcomes in individuals with type 2 diabetes and diabetic kidney disease.

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Background: Online home exercises represent opportunities to increase physical activity levels. However, high dropout rates are commonly reported in such programmes. This study aimed to investigate the predictors of dropping out from an online home exercise programme.

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Estimated Brain Age in Healthy Aging and Across Multiple Neurological Disorders.

J Magn Reson Imaging

November 2024

Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.

Article Synopsis
  • - The study investigates how brain aging differs between healthy controls and patients with various neurological disorders, focusing on its clinical implications and using a retrospective analysis of MRI data.
  • - A total of 2,913 healthy individuals and 1,600 patients with conditions like multiple sclerosis and Alzheimer's were assessed by comparing their estimated brain age using advanced imaging techniques.
  • - Results showed that individuals with "accelerated" brain age tended to have higher white matter hyperintensities and lower brain volumes, with notable correlations between increased brain age gap and cognitive decline across all disorders examined.
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Computerized decision support to optimally funnel patients through the diagnostic pathway for dementia.

Alzheimers Res Ther

November 2024

Alzheimer Center Amsterdam and Department of Neurology, VU University Medical Center, Amsterdam UMC, De Boelelaan 1118, Amsterdam, 1081 HZ, The Netherlands.

Background: The increasing prevalence of dementia and the introduction of disease-modifying therapies (DMTs) highlight the need for efficient diagnostic pathways in memory clinics. We present a data-driven approach to efficiently guide stepwise diagnostic testing for three clinical scenarios: 1) syndrome diagnosis, 2) etiological diagnosis, and 3) eligibility for DMT.

Methods: We used data from two memory clinic cohorts (ADC, PredictND), including 504 patients with dementia (302 Alzheimer's disease, 107 frontotemporal dementia, 35 vascular dementia, 60 dementia with Lewy bodies), 191 patients with mild cognitive impairment, and 188 cognitively normal controls (CN).

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Implications of the microbiome after pancreatic cancer resection with regard to morbidity and mortality.

Expert Rev Gastroenterol Hepatol

November 2024

Section of Oncology, Department of Clinical & Experimental Medicine, University of Surrey, Guildford, Surrey, UK.

Pancreatic ductal adenocarcinoma (PDAC) is an aggressive disease with an extremely poor prognosis. The most common complications after a pancreaticoduodenectomy (PD) include surgical site infection (SSI), postoperative pancreatic fistula (POPF), and delayed gastric emptying (DGE). The potential role and mechanisms of microbial colonization of key surgical sites resulting in perioperative complications after PD remain to be fully elucidated.

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Background: To meaningfully understand outcomes of gender-affirming care, patient-reported outcome measures (PROMs) that are grounded in what matters to individuals seeking care are urgently needed. The objective of this study was to develop a comprehensive PROM to assess outcomes of gender-affirming care in clinical practice, research, and quality initiatives (the GENDER-Q).

Methods: Internationally established guidelines for PROM development were used to create a field test version of the GENDER-Q.

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Article Synopsis
  • - The study investigates mechanisms of resistance in patients with EGFR mutated non-small cell lung cancer (NSCLC) who progressed on osimertinib treatment, using paired plasma and tumor samples for analysis.
  • - Out of 51 patients, the driver mutation was found in 82% of plasma samples and 98% of tumor samples, with a concordance rate of 80%, while resistance mechanisms (RMs) were identified in 80% of patients.
  • - The findings suggest that analyzing both plasma and tumor samples provides a more comprehensive understanding of osimertinib resistance, with plasma identifying 61.5% and tumor analysis revealing 75% of RMs, leading to better treatment strategies.
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Background: Evidence is lacking on the most effective values clarification methods (VCMs) in patient decision aids (PtDAs). We tested the effects of an adaptive conjoint analysis (ACA)-based VCM compared with a ranking-based VCM and no VCM on several decision-related outcomes, with the decisional conflict and its subscale "perceived values clarity" as primary outcomes.

Design: Online experimental study with 3 conditions: no VCM versus ranking-based VCM versus -based VCM ( = 282; = 63.

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Advances in target drugs and immunotherapy for biliary tract cancer.

Expert Rev Gastroenterol Hepatol

October 2024

Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, VU University Medical Center (VUmc), Amsterdam, The Netherlands.

Article Synopsis
  • - There has been significant progress in the treatment of biliary tract cancers (BTC) with the introduction of targeted therapies and immunotherapy, moving past years of stagnation in treatment options.
  • - The overview covers existing therapies like FGFR, IDH, and HER2 inhibitors, along with emerging targets such as KRAS and pathways like MAPK and PI3K/AKT/mTOR, plus newer therapeutic approaches like CAR-T and vaccines.
  • - Challenges include a limited patient pool for targeted therapies, with discussions on how to design clinical trials effectively, along with insights into promising trials that could change BTC treatment practices.
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CSF proteins of inflammation, proteolysis and lipid transport define preclinical AD and progression to AD dementia in cognitively unimpaired individuals.

Mol Neurodegener

November 2024

Neurochemistry Laboratory and Biobank, Department of Laboratory Medicine, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.

This preclinical AD CSF proteome study identified a panel of 12-CSF markers detecting amyloid positivity and clinical progression to AD with high accuracy; some of these CSF proteins related to immune function, neurotrophic processes, energy metabolism and endolysosomal functioning (e.g., ITGB2, CLEC5A, IGFBP-1, CST3) changed before amyloid positivity is established.

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Extracellular vesicles (EVs) have emerged as important mediators of intercellular communication in the heart under homeostatic and pathological conditions, such as myocardial infarction (MI). However, the basic mechanisms driving cardiomyocyte-derived EV (CM-EV) production following stress are poorly understood. In this study, we generated human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) that express NanoLuc-tetraspanin reporters.

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Short-term Frailty Index Fluctuations in Older Adults: Noise or Signal?

J Gerontol A Biol Sci Med Sci

December 2024

Geriatric Medicine, Department of Medicine, Dalhousie University & Nova Scotia Health, Halifax, Nova Scotia, Canada.

Background: Reversible short-term fluctuations in the frailty index (FI) are often thought of as representing only noise or error. Here, we assess (i) the size and source of short-term FI fluctuations, (ii) variation across sociodemographic characteristics, (iii) association with chronic diseases, (iv) correlation with age, frailty level, frailty change, and mortality, and (v) whether fluctuations reflect discrete health transitions.

Methods: Nationwide, biweekly longitudinal data from 426 community-dwelling older adults (70+) were collected in the FRequent health Assessment In Later life (FRAIL70+) study using a measurement burst design (5 122 repeated observations, median of 13 repeated observations per person).

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Background: Fractional flow reserve (FFR) or non-hyperaemic pressure ratios are recommended to assess functional relevance of intermediate coronary stenosis. Both diagnostic methods require the placement of a pressure wire in the coronary artery during invasive coronary angiography. Quantitative flow ratio (QFR) is an angiography-based computational method for the estimation of FFR that does not require the use of pressure wires.

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Article Synopsis
  • The study investigates the relationship between graft-versus-host disease (GVHD) and graft-versus-leukemia (GVL) effects in acute myeloid leukemia (AML) patients after stem-cell transplantation (SCT), specifically comparing standard and post-transplant cyclophosphamide (PTCy) methods.
  • Results show that while GVHD correlates with lower relapse rates and higher non-relapse mortality (NRM) and lower overall survival (OS) in standard cases, following PTCy, GVHD does not reduce relapse.
  • The findings indicate that although GVHD remains a significant factor in SCT outcomes, its role changes depending on the type of prophylaxis used, particularly diminishing its association with relapse in the PTC
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Sexual education and development after early childhood sexual abuse: A qualitative study of experiences of parents and children.

Child Abuse Negl

December 2024

Amsterdam University Medical Centers, Department of Child and Adolescent Psychiatry, University of Amsterdam, Amsterdam, the Netherlands; Levvel, Academic Center for Child and Adolescent Psychiatry, Amsterdam, the Netherlands.

Background: In the Amsterdam Sexual Abuse Case (ASAC), infants and toddlers experienced childhood sexual abuse (CSA). The perpetrator was convicted, and psychosocial care was offered to children and families. A research project was established to investigate the impact of CSA at an early age, with this study specifically focusing on sexual education and development.

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