1,738 results match your criteria: "Institute of Public Health and the Environment[Affiliation]"

Introduction: Plasma exchange therapy (PEX) was standard treatment for thrombotic microangiopathy before eculizumab was available and is still widely applied. However, most PEX patients still ultimately progress to end-stage renal disease (ESRD). It has been suggested that infusion of plasma that contains active complement may induce additional complement activation with subsequent activation of neutrophils and endothelial cells, leading to exacerbation of organ damage and deterioration of renal function.

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Background: Chlamydia trachomatis (CT) is the most common bacterial sexually transmitted infection (STI) worldwide. CT is mainly asymptomatic. Test-and-treat strategies are widely implemented to prevent transmission and complications.

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In the past decades, hundreds of antibiotics have been isolated from microbial metabolites or have been artificially synthesized for protecting humans, animals and crops from microbial infections. Their everlasting usage results in impacts on the microbial community composition and causes well-known collateral damage to the functioning of microbial communities. Nevertheless, the impact of different antibiotic properties on aquatic microbial communities have so far only poorly been disentangled.

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The conventional Hill equation model is suitable to fit dose-response data obtained from performing (eco)toxicity assays. Models based on quasi-quantitative structure-activity relationships (QSARs) to estimate the Hill coefficient ( were developed with the aim of predicting the response of the invertebrate species Daphnia magna to exposure to metal-based nanomaterials. Descriptors representing the pristine properties of nanoparticles and media conditions were coded to a quasi-simplified molecular input line entry system and correlated to experimentally derived values of .

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Pertussis is a vaccine-preventable disease caused by the bacterium . Over the past years, the incidence and mortality of pertussis increased significantly. A possible cause is the switch from whole-cell to acellular pertussis vaccines, although other factors may also contribute.

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Article Synopsis
  • The study investigates how nanoparticles (NPs), heavy metals, and natural organic matter interact in water, focusing on the behaviors and environmental risks of CuO NPs with humic acid (HA) and cadmium (Cd).
  • The research finds that pH levels have a more significant impact on NP aggregation than the order in which components are added, while the contact sequence greatly influences NP solubility.
  • Pre-mixing CuO NPs with HA before adding Cd leads to higher solubility and lower aggregation of the NPs, and HA boosts the Cd-adsorption capacity of CuO NPs at higher pH levels.
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There is a global research interest in metal nanoparticles (MNPs) due to their diverse applications, rapidly increasing use, and increased presence in the aquatic environment. Currently, most MNPs in the environment are at levels unlikely to cause overt toxicity. Sub-lethal effects that MNPs may induce, notable immunotoxicity, could however have significant health implications.

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BCG-induced trained immunity enhances acellular pertussis vaccination responses in an explorative randomized clinical trial.

NPJ Vaccines

February 2022

Section Pediatric Infectious Diseases, Laboratory of Medical Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6500 HB, Nijmegen, The Netherlands.

Acellular pertussis (aP) booster vaccines are central to pertussis immunization programs, although their effectiveness varies. The Bacille Calmette-Guérin (BCG) vaccine is a prototype inducer of trained immunity, which enhances immune responses to subsequent infections or vaccinations. While previous clinical studies have demonstrated that trained immunity can protect against heterologous infections, its effect on aP vaccines in humans is unknown.

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Nanoplastics (NPs) have become a new type of pollutant of high concern that is ubiquitous in aqueous environments. However, the transport and transformation of NPs in natural waters are not yet fully understood. In this study, the aggregation and photooxidation of NPs were assessed with nanosized polystyrene (PS) as an example, and the effects of dissolved organic matter (DOM) were investigated with Suwannee River fulvic acid (SRFA) as representative DOM.

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Objective: The aim of this exploratory study was to investigate the development of low-grade inflammation during ageing and its relationship with frailty.

Methods: The trajectories of 18 inflammatory markers measured in blood samples, collected at 5-year intervals over a period of 20 years from 144 individuals aged 65-75 years at the study endpoint, were related to the degree of frailty later in life.

Results: IFN-γ-related markers and platelet activation markers were found to change in synchrony.

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Face masks have been widely employed as a personal protective measure during the COVID-19 pandemic. However, concerns remain that masks create a false sense of security that reduces adherence to other public health measures, including social distancing. This paper tested whether mask-wearing was negatively associated with social distancing compliance.

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Potential Application of Machine-Learning-Based Quantum Chemical Methods in Environmental Chemistry.

Environ Sci Technol

February 2022

Institute of Environmental Sciences (CML), Leiden University, Leiden 2300 RA, The Netherlands.

Article Synopsis
  • Understanding the behavior and toxicology of chemical pollutants is crucial in environmental sciences, and quantum chemical methodologies have been essential in this research area.
  • Recent advancements in machine learning (ML) have significantly impacted quantum chemistry, making it a promising approach for studying environmental pollutants, though its application in this field is still limited.
  • This Perspective highlights recent developments in ML-based quantum chemical methods (ML-QCMs) and discusses their potential to outperform traditional methods in predicting chemical degradation, transformation pathways, and relevant environmental outcomes.
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Quantitative tracing of uptake and transport of submicrometre plastics in crop plants using lanthanide chelates as a dual-functional tracer.

Nat Nanotechnol

April 2022

CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.

The uptake pathways of nanoplastics by edible plants have recently been qualitatively investigated. There is an urgent need to accurately quantify nanoplastics accumulation in plants. Polystyrene (PS) particles with a diameter of 200 nm were doped with the europium chelate Eu-β-diketonate (PS-Eu), which was used to quantify PS-Eu particles uptake by wheat (Triticum aestivum) and lettuce (Lactuca sativa), grown hydroponically and in sandy soil using inductively coupled plasma mass spectrometry.

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Impaired JAK-STAT pathway signaling in leukocytes of the frail elderly.

Immun Ageing

January 2022

Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.

Article Synopsis
  • The study investigates the link between frailty in elderly individuals and altered cytokine signaling via the JAK-STAT pathway, focusing on 34 participants aged 65-74.
  • It was found that higher frailty scores correspond to lower cytokine-induced pSTAT signaling responses, with distinct patterns observed in men and women.
  • The findings suggest that maintaining healthy JAK-STAT signaling could be crucial for aging well, proposing pSTAT levels as potential biomarkers for frailty.
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Whether older adults need more protein than younger adults is debated. The population reference intake for adults set by the European Food Safety Authority is 0.83 g/kg body weight (BW)/d based primarily on nitrogen balance studies, but the underlying data on health outcomes are outdated.

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Soil ecotoxicological assays on nanoparticles (NPs) have mainly investigated single components (e.g., plants, fauna, and microbes) within the ecosystem, neglecting possible effects resulting from the disturbance of the interactions between these components.

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Article Synopsis
  • Copper-based nanoparticles (NPs) have potential as antimicrobial agents and nutritional additives in agriculture, but their effects on crop quality need further exploration.
  • The study found that soybeans grown with Cu NPs showed significantly higher copper accumulation compared to those with traditional copper salts, especially at the flowering and maturation stages.
  • The use of Cu NPs improved plant height and biomass at lower concentrations, but caused nutrient imbalances and reductions in nitrogen and phosphorus content at higher doses, highlighting the need for careful application in farming.
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Background: Around 15%-20% of children with acute otitis media present with ear discharge due to a spontaneous tear or perforation of the eardrum (AOMd). Current guidance recommends clinicians to consider oral antibiotics as first-line treatment in this condition. The opening in the eardrum however should allow topical antibiotics to enter the middle ear directly.

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Comparison of Whole-Genome Sequence-Based Methods and PCR Ribotyping for Subtyping of Clostridioides difficile.

J Clin Microbiol

February 2022

Department of Medical Microbiology, Section Experimental Bacteriology, Leiden University Medical Centergrid.10419.3d, Leiden, The Netherlands.

Clostridioides difficile is the most common cause of antibiotic-associated gastrointestinal infections. Capillary electrophoresis (CE)-PCR ribotyping is currently the gold standard for C. difficile typing but lacks the discriminatory power to study transmission and outbreaks in detail.

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"Please, you go first!" preferences for a COVID-19 vaccine among adults in the Netherlands.

Soc Sci Med

January 2022

Maastricht University, Department of Data Analytics and Digitalization, PO Box 616, 6200 MD, Maastricht, the Netherlands; University of Antwerp, Department of Economics, City Campus, Prinsstraat 13, B-2000 Antwerp, Belgium. Electronic address:

Background: Vaccination is generally considered the most direct way to restoring normal life after the outbreak of COVID-19, but the available COVID-19 vaccines are simultaneously embraced and dismissed. Mapping factors for vaccine hesitancy may help the roll-out of COVID-19 vaccines and provide valuable insights for future pandemics.

Objectives: We investigate how characteristics of a COVID-19 vaccine affect the preferences of adult citizens in the Netherlands to take the vaccine directly, to refuse it outright, or to wait a few months and first look at the experiences of others.

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Identifying and delineating the type 2 diabetes population in the Netherlands using an all-payer claims database: characteristics, healthcare utilisation and expenditures.

BMJ Open

December 2021

Department of Health Services Research, CAPHRI Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.

Article Synopsis
  • - The study aimed to profile the Dutch type 2 diabetes population and analyze healthcare use and costs from 2016 to 2018, using an all-payer claims database.
  • - In 2018, approximately 900,522 individuals (6.5% of adults) were diagnosed with type 2 diabetes, with heart disease as the most common comorbidity (12.1%), and a significant portion of patients receiving various forms of healthcare.
  • - Overall, €8173 million was spent on this population, with medical specialist care being the largest expense (38.1%), highlighting the importance of understanding healthcare utilization to inform policy and improve healthcare system sustainability.
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Delineating the Type 2 Diabetes Population in the Netherlands Using an All-Payer Claims Database: Specialist Care, Medication Utilization and Expenditures 2016-2018.

Pharmacoecon Open

March 2022

Department of Health Services Research, CAPHRI Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands.

Objectives: The aim of this study was to describe the healthcare utilization and expenditures related to medical specialist care and medication of the entire type 2 diabetes population in the Netherlands in detail.

Methods: For this retrospective, observational study, we used an all-payer claims database. Comprehensive data on specialist care and medication utilization and expenditures of the type 2 diabetes population (n = 900,522 in 2018) were obtained and analyzed descriptively.

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We designed this study to determine the trend of moxifloxacin resistance among multidrug-resistant tuberculosis (MDR-TB) patients from 2007 to 2013 in China to inform the composition of multidrug-resistant/rifampicin-resistant tuberculosis (MDR/RR-TB) treatment regimens. We assessed moxifloxacin resistance among MDR-TB isolates collected in national drug resistance surveys in 2007 and 2013 that included 3,634 smear-positive and 7,206 culture-positive pulmonary tuberculosis patients, respectively. Moxifloxacin susceptibility was examined by a Mycobacterium growth indicator tube (MGIT) 960 for the 2007 isolates, and by the minimum inhibitory concentration (MIC) method for the 2013 isolates, at both breakpoints 0.

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Trophic Transfer and Toxicity of (Mixtures of) Ag and TiO Nanoparticles in the Lettuce-Terrestrial Snail Food Chain.

Environ Sci Technol

December 2021

Institute of Environmental Sciences (CML), Leiden University, P.O. Box 9518, 2300 RA Leiden, The Netherlands.

Article Synopsis
  • Research shows that silver nanoparticles (AgNPs) and titanium dioxide nanoparticles (TiONPs) can transfer from lettuce to snails, indicating their accumulation in soil could impact food chains.
  • Trophic transfer factors reveal AgNPs have a lower concentration in snails compared to TiONPs, with most Ag excreted as waste, while Ti is mostly stored in the snail's digestive gland.
  • Combining AgNPs and TiONPs in treatments worsens the negative effects on snail growth and activity compared to using either nanoparticle alone, raising concerns about their impact on higher trophic levels and ecosystem health.
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