861 results match your criteria: "Delft University of Technology (TU Delft); Department of Orthopedics[Affiliation]"

Solid-state batteries currently receive ample attention due to their potential to outperform lithium-ion batteries in terms of energy density when featuring next-generation anodes such as lithium metal or silicon. One key remaining challenge is identifying solid electrolytes that combine high ionic conductivity with stability in contact with the highly reducing potentials of next-generation anodes. Fully reduced electrolytes, based on irreducible anions, offer a promising solution by avoiding electrolyte decomposition altogether.

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Low-grade inflammation and pathological endochondral ossification are key processes underlying the progression of osteoarthritis, the most prevalent joint disease worldwide. In this study, we employed a multi-faceted approach, integrating publicly available datasets, analyses, experiments and models to identify new therapeutic candidates targeting these processes. Data mining of transcriptomic datasets identified EPHA2, a receptor tyrosine kinase associated with cancer, as being linked to both inflammation and endochondral ossification in osteoarthritis.

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Multifunctional, biocompatible magnetic materials, such as iron oxide nanoparticles (IONPs), hold great potential for biomedical applications including diagnostics (e.g., MRI) and cancer therapy.

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Purpose: Evaluate the feasibility of quantification of Relaxation Along a Fictitious Field in the 2nd rotating frame (RAFF2) relaxation times in the human myocardium at 3 T.

Methods: mapping was performed using a breath-held ECG-gated acquisition of five images: one without preparation, three preceded by RAFF2 trains of varying duration, and one preceded by a saturation prepulse. Pixel-wise maps were obtained after three-parameter exponential fitting.

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Cellular biomaterials offer unique properties for diverse biomedical applications. However, their complex viscoelastic behavior requires careful consideration for design optimization. This study explores the effective viscoelastic response of two promising unit cell designs (tetrahedron-based and octet-truss) suitable for high porosity and strong mechanics.

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Communal Load Sharing of Miscarriage Experiences: Thematic Analysis of Social Media Community Support.

J Med Internet Res

December 2024

Department of Design, Organization, and Strategy, Faculty of Industrial Design Engineering, Delft University of Technology, Delft, Netherlands.

Background: Miscarriage is a common experience, affecting 15% of recognized pregnancies, but societal ignorance and taboos often downplay the mental distress and personal impact following a miscarriage. Emerging stories on social media in which women express their miscarriage grief are breaking such taboos. Research in the area of online health communities is increasingly focused on studying how people share their health experiences on social media.

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Alzheimer's disease-specific transcriptomic and epigenomic changes in the tryptophan catabolic pathway.

Alzheimers Res Ther

November 2024

Department of Psychiatry and Neuropsychology, Faculty of Health, Medicine and Life Sciences (FHML), Mental Health and Neuroscience Research Institute (MHeNs) and European Graduate School of Neuroscience (EURON), Maastricht University, Maastricht, 6211 LK, the Netherlands.

Background: Neurodegenerative disorders, including Alzheimer's disease (AD), have been linked to alterations in tryptophan (TRP) metabolism. However, no studies to date have systematically explored changes in the TRP pathway at both transcriptional and epigenetic levels. This study aimed to investigate transcriptomic, DNA methylomic (5mC) and hydroxymethylomic (5hmC) changes within genes involved in the TRP and nicotinamide adenine dinucleotide (NAD) pathways in AD, using three independent cohorts.

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FLASH Bragg-Peak Irradiation With a Therapeutic Carbon Ion Beam: First In Vivo Results.

Int J Radiat Oncol Biol Phys

November 2024

GSI Helmholtzzentrum für Schwerionenforschung, Biophysics Department, Darmstadt, Germany; Life Science Engineering Department, Technische Hochschule Mittelhessen, Gießen, Germany.

Purpose: In recent years, ultra-high dose rate (UHDR) irradiation has emerged as a promising innovative approach to cancer treatment. Characteristic feature of this regimen, commonly referred to as FLASH effect, demonstrated primarily for electrons, photons, or protons, is the improved normal tissue sparing, whereas the tumor control is similar to the one of the conventional dose-rate (CDR) treatments. The FLASH mechanism is, however, unknown.

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Safety notices and registry outlier data measure different aspects of safety and performance of total knee implants: a comparative study of safety notices and register outliers.

Acta Orthop

November 2024

Department of Orthopaedics, Leiden University Medical Center, Leiden; Safety & Security Science and Centre for Safety in Healthcare, Delft University of Technology, Delft, the Netherlands.

Background And Purpose:  Safety notices for medical devices such as total knee arthroplasty (TKA) implants may indicate problems in their design or performance that require corrective action to prevent patient harm. Safety notices are often published on national Ministries of Health or regulatory agencies websites. It is unknown whether problems triggering safety notices identify the same implants as those identified by registries as "outlier.

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Multiphysics simulation of liposome release from hydrogels for cavity filling following patient-specific breast tumor surgery.

Eur J Pharm Sci

January 2025

Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Delft, Van der Maasweg 9, 2629 HZ Delft, the Netherlands. Electronic address:

Several studies have recommended the use of hydrogels for localized targeted delivery of chemotherapeutic drugs following tumor removal surgery. This approach aims to both fill the cavity and prevent cancer recurrence. The use of Multiphysics-based simulation emerges as a valuable strategy for minimizing experimental work, providing detailed insights into how drug release occurs in the tissue, and enabling the optimization of the design.

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Groundwater poisoning by heavy metals has caused serious health hazards in the exposed population globally. Manganese (Mn) poisoning causing human health hazards is very meagerly reported worldwide. The present research elucidates for the first time the catastrophic effect of manganese causing cancer in the Gangetic plains of Bihar (India).

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Frustrated Radical Pairs: From Fleeting Intermediates to Isolable Species.

Chemistry

November 2024

Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO box 94157, 1090 GD, Amsterdam, The Netherlands.

We present the design and comprehensive investigation of stable para-substituted triarylamine-2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) radical ion pairs (RIPs) generated via single-electron transfer (SET). We quantified the degree of SET in both solution and solid phases, utilising a suite of spectroscopic techniques including IR, EPR, NMR, and single-crystal X-ray diffraction (SC-XRD). Our findings reveal that the extent of SET is significantly influenced by the nature of the substituents (MeO > Bu > Br) and the polarity of the solvent (MeCN > DCM > toluene).

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This article proposes a method to improve the efficiency of solar power plants by estimating and forecasting the spatial distribution of direct normal irradiance (DNI) using a sensor network and anemometer data. For this purpose, the proposed approach employs spatio-temporal kriging with an anisotropic spatio-temporal variogram that depends on wind speed to accurately estimate the distribution of DNI in real-time, making it useful for short-term forecast and nowcast of DNI. Finally, the method is validated using synthetic data from varying sky conditions, outperforming another state-of-the-art technique.

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Article Synopsis
  • The study employs spin-echo small-angle neutron scattering (SESANS) to examine a wide range of structures in polymer-carbon nanocomposites, effectively covering length scales from 10 nm to 16 μm.
  • The data processing incorporates a consistent method across two different SESANS instruments, producing reliable data that can be analyzed using established hierarchical models in software like SasView.
  • This technique significantly enhances the ability to gather information about bulk structures, surpassing traditional scattering methods and opening new avenues for analyzing polymer nanocomposites across various scales.
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Over the past years, the gut microbiota and its correlation to health and disease has been studied extensively. In terms of beneficial microbes, an increased interest in () has been observed since its discovery. Direct evidence for the role of in host health has been provided in both mice and human studies.

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Inhalation of nanosized metal oxides may occur at the workplace. Thus, information on potential hazardous effects is needed for risk assessment. We report an investigation of the genotoxic potential of different metal oxide nanomaterials.

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Evidence to support nature contact and nature prescriptions to reduce loneliness is scant. A total of 2100 individuals took part in a survey conducted in Australia (n = 525, mean age = 34.1), India (n = 526, mean age = 29.

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Extensive attention in organizational research has been dedicated to workplace bullying, primarily focusing on its frequency and impact on both the victim and the bully, emphasizing interpersonal dynamics. This study extends current research by shifting the focus to the organizational level, examining the relationship between organizational culture and affective commitment, mediated by workplace bullying. Utilizing data from two surveys ( = 650 in 2012 and  = 553 in 2017), the study reveals that dimensions of organizational culture, such as assertiveness, performance orientation, and ingroup collectivism significantly influence work-related workplace bullying.

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Multi-physics numerical simulation study on thermo-sensitive gel delivery for a local post-tumor surgery treatment.

Eur J Pharm Sci

December 2024

Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Delft, Van der Maasweg 9, 2629 HZ Delft, the Netherlands. Electronic address:

Numerous studies in the literature have proposed the use of thermo-responsive hydrogels for filling cavities after tumor resection. However, optimizing the injection process is challenging due to the complex interplay of various multi-physics phenomena, such as the coupling of flow and heat transfer, multi-phase interactions, and phase-change dynamics. Therefore, gaining a fundamental understanding of these processes is crucial.

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Article Synopsis
  • Bacterial infections and antimicrobial resistance are major challenges for global healthcare, revealing limitations in traditional diagnostic and treatment methods and emphasizing the need for new approaches.
  • Aptamers are synthetic oligonucleotides that show promise in managing bacterial infections by providing high specificity and effectiveness in both diagnosis and therapy, including early detection and suppressing bacterial growth.
  • The review highlights how aptamers can also improve immune responses and serve in advanced treatment methods while discussing potential challenges like stability and degradation, aiming to expand their clinical applications.
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Microbiome signature suggestive of lactose-intolerance in rhesus macaques (Macaca mulatta) with intermittent chronic diarrhea.

Anim Microbiome

September 2024

Department of Microbiology and Systems Biology, Organization for Applied Scientific Research (TNO), Sylviusweg 71, 2333 BE, Leiden, The Netherlands.

Background: Chronic diarrhea is a common cause of mortality and morbidity in captive rhesus macaques (Macaca mulatta). The exact etiology of chronic diarrhea in macaques remains unidentified. The occurrence of diarrhea is frequently linked to dysbiosis within the gut microbiome.

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Background And Aims: Immune checkpoint inhibitors (ICIs) revolutionized cancer treatment. However, ICIs may increase the immune response to non-tumor cells, possibly resulting in increased arterial inflammation, raising the risk of atherosclerotic events. Nevertheless, malignancies may induce a pro-inflammatory state and the association between ICIs and arterial inflammation remains to be clarified.

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Physicochemical Changes of Apoferritin Protein during Biodegradation of Magnetic Metal Oxide Nanoparticles.

ACS Appl Mater Interfaces

October 2024

CIDETEC, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián 20014, Spain.

The biodegradation of therapeutic magnetic-oxide nanoparticles (MONPs) in the human body raises concerns about their lifespan, functionality, and health risks. Interactions between apoferritin proteins and MONPs in the spleen, liver, and inflammatory macrophages significantly accelerate nanoparticle degradation, releasing metal ions taken up by apoferritin. This can alter the protein's biological structure and properties, potentially causing health hazards.

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Less Pain, but no changes in maximal inclination angles during an overhead reach task following local anesthetic in patients with ongoing shoulder pain.

J Electromyogr Kinesiol

December 2024

Department of Biomechanical Engineering, Faculty of Mechanical, Maritime & Materials Engineering, Delft University of Technology, Delft, the Netherlands.

This multicenter observational study aimed to assess how pain reduction, induced by local anesthesia, affects the relative angular contributions of the shoulder girdle and trunk to the maximal angular performance during a semi-constrained overhead reach task in patients with ongoing shoulder pain. Twenty-nine individuals (age 59.0 SD 12.

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