Publications by authors named "Dijk L"

Long-distance transport and associated fasting of unweaned calves have the potential to compromise the animals' welfare. This observational study aimed to determine how transport and fasting durations impacted the physiology and health of 115 transported calves in three transport groups; IRE (n = 20, mean age 29.8d; short road transport (~ 29 h incl.

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Motivation: Partial order alignment is a widely used method for computing multiple sequence alignments, with applications in genome assembly and pangenomics, among many others. Current algorithms to compute the optimal, gap-affine partial order alignment do not scale well to larger graphs and sequences. While heuristic approaches exist, they do not guarantee optimal alignment and sacrifice alignment accuracy.

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Background: Pharmacist prescribing legislation aims to enhance healthcare quality and accessibility. However, in many countries, like the Netherlands, it has not yet been legally established.

Aim: To investigate pharmacists' perspectives on potential pharmacist prescribing in the Netherlands.

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Article Synopsis
  • Scientists established a direct-contact transmission model for the SARS-CoV-2 Omicron BA.5 variant using Syrian hamsters, which are highly susceptible to the virus.
  • The research involved testing different inoculation doses and co-housing durations to ensure reliable transmission and comparing viral loads and tissue damage between infected donor and naïve recipient hamsters.
  • Results indicated that while both male and female hamsters could be infected similarly, males shed significantly more infectious virus; overall, the Omicron BA.5 variant resulted in lower viral loads and less severe symptoms compared to prior strains, highlighting the model's potential for studying new treatment strategies.
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Low-abundance members of microbial communities are difficult to study in their native habitats, including Escherichia coli, a minor but common inhabitant of the gastrointestinal tract, and key opportunistic pathogen of the urinary tract. While multi-omic analyses have detailed interactions between uropathogenic Escherichia coli (UPEC) and the bladder mediating urinary tract infection (UTI), little is known about UPEC in its pre-infection reservoir, the gastrointestinal tract, partly due to its low relative abundance (<1%). To sensitively explore the genomes and transcriptomes of diverse gut E.

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Background And Purpose: Prior work on adaptive organ-at-risk (OAR)-sparing radiation therapy has typically reported outcomes based on fixed-number or fixed-interval re-planning, which represent one-size-fits-all approaches and do not account for the variable progression of individual patients' toxicities. The purpose of this study was to determine the personalized optimal timing for re-planning in adaptive OAR-sparing radiation therapy, considering limited re-planning resources, for patients with head and neck cancer (HNC).

Materials And Methods: A novel Markov decision process (MDP) model was developed to determine optimal timing of re-planning based on the patient's expected toxicity, characterized by normal tissue complication probability (NTCP), for four toxicities.

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Background: We aimed to investigate the longitudinal impact of COVID-19 and the effects of clinical and psychosocial factors, accounting for post-COVID conditions (PCC), on the mental and physical aspect of health-related quality of life (HRQoL) of patients diagnosed with COVID-19.

Methods: Data from the Nivel Corona Cohort were used, which includes individuals with an established SARS-CoV-2 infection that received four questionnaires over a year's time with questions regarding HRQoL (SF-12), symptoms and social characteristics. PCC was determined based on questionnaire data.

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Background: The post-COVID syndrome (PCS) has a large impact on an individual's daily life. The wide variety of symptoms in PCS patients and the fact that it is still relatively new makes it difficult for general practitioners (GPs) to recognize, diagnose and treat patients with PCS, leading to difficulties in assessing and fulfilling healthcare needs. It is largely unknown what the experiences of Dutch patients and GPs are with PCS and, therefore, we gained insight into the different aspects of living with PCS and the associated healthcare needs.

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Article Synopsis
  • The study focuses on using radiomic features from contrast-enhanced CT scans to distinguish between osteoradionecrosis (ORN) and normal mandibular bone in head and neck cancer patients treated with radiotherapy.
  • Data from 150 patients was analyzed, with feature extraction performed using PyRadiomics and a Random Forest classifier used to identify key features, resulting in an accuracy of 88%.
  • The findings highlight specific radiomic features that can differentiate ORN from healthy tissue, paving the way for future research on early detection and intervention strategies.
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To further optimize radiotherapy, a more personalized treatment towards individual patient's risk profiles, dissecting both patient-specific tumor and normal tissue response to multimodality treatments is needed. Novel developments in radiobiology, using in vitro patient-specific complex tissue resembling 3D models and multiomics approaches at a spatial single-cell level, may provide unprecedented insight into the radiation responses of tumors and normal tissue. Here, we describe the necessary team effort, including all disciplines in radiation oncology, to integrate such data into clinical prediction models and link the relatively "big data" from the clinical practice, allowing accurate patient stratification for personalized treatment approaches.

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Lung transplant recipients (LTRs) are particularly at risk of developing severe coronavirus disease-2019 (COVID-19), but are also difficult to protect by vaccination due to their immunocompromised state. Here, we investigated the immunogenicity of mRNA-based COVID-19 vaccines in LTRs who had a prior natural SARS-CoV-2 infection. At a median of 184 days after SARS-CoV-2 infection, LTRs were vaccinated twice with the mRNA-1273 COVID-19 vaccine, with a 28-day interval.

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Purpose: Conventional normal tissue complication probability (NTCP) models for patients with head and neck cancer are typically based on single-value variables, which, for radiation-induced xerostomia, are baseline xerostomia and mean salivary gland doses. This study aimed to improve the prediction of late xerostomia by using 3-dimensional information from radiation dose distributions, computed tomography imaging, organ-at-risk segmentations, and clinical variables with deep learning (DL).

Methods And Materials: An international cohort of 1208 patients with head and neck cancer from 2 institutes was used to train and twice validate DL models (deep convolutional neural network, EfficientNet-v2, and ResNet) with 3-dimensional dose distribution, computed tomography scan, organ-at-risk segmentations, baseline xerostomia score, sex, and age as input.

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Background: In the last decade, a fundamental shift in the treatment of cystic fibrosis (CF) took place due to the introduction of CF transmembrane conductance regulator (CFTR) modulators. Adequate medication adherence is a prerequisite for their effectiveness, but little is known about adherence to CFTR modulators. We aimed to assess the extent of medication adherence to CFTR modulators in patients with CF and assess which characteristics are associated with adherence.

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Traditionally, sensitivity to situational norms is understood as deriving from internal cognitive states that represent the rules for appropriate conduct. On an alternative view, norms are 'out there', in the practices and situations themselves, without being duplicated in the head. However, what does normativity look like when it is performed by people engaging with a concrete situation? A 'behaviour setting' offers a window onto these dynamics.

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Background: The Assessment of Burden of Chronic Conditions (ABCC-)tool is developed to facilitate a personalized approach to care in the patient-healthcare provider (HCP) conversation based on shared decision-making and individualized care plans. An effectiveness study highlighted its effect on the perceived quality of care and patient activation. Successful implementation of novel interventions necessitates an understanding of the user's actual application, user experiences and an evaluation of implementation outcomes.

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Objectives: Patients on oral anticancer therapy regularly experience medication-related problems (MRPs), potentially leading to non-adherence and medication waste. Most studies reporting these experiences have cross-sectional designs. The aim of our study was to explore patient reported MRPs, adherence and waste of oral anticancer medication over time.

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In some countries, pharmacists have obtained prescribing rights to improve quality and accessibility of care and reduce physician workload. This case study explored pharmacists' current roles in and potential for prescribing in primary care in the Netherlands, where prescribing rights for pharmacists do not exist. Participatory observations of pharmacists working in either general practice or community pharmacy were conducted, as were semi-structured interviews about current and potential practice.

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Monitoring belimumab concentrations in patients can be a valuable tool for assessing treatment response and for personalizing drug doses. Various assay formats may be used to measure concentrations of therapeutic monoclonal antibodies. A particularly useful format involves the use of anti-idiotype monoclonal antibodies, selected to be highly specific to the antibody of interest.

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Background: This study aims to create a comprehensive framework for the development and implementation of digital medication adherence technologies (DMATech), focusing on critical stages where engagement of medication users (MU) is considered meaningful, i.e. adds significant value, as agreed upon by participating stakeholders.

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Article Synopsis
  • Opioid use for chronic non-malignant pain has increased in Europe, prompting a need to explore the beliefs and practices of general practitioners (GPs) and community pharmacists (CPs) regarding this issue.
  • Both GPs and CPs largely agree on the overuse of opioids and express concerns about their addictive potential; however, GPs feel more self-efficacious and see fewer benefits from opioids than CPs.
  • Despite recognizing the need to reduce opioid prescriptions, less than half of GPs and CPs actively implement recommended strategies, highlighting the need for better education and collaboration to enhance opioid-related care.
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The more insects there are, the more food there is for insectivores and the higher the likelihood for insect-associated ecosystem services. Yet, we lack insights into the drivers of insect biomass over space and seasons, for both tropical and temperate zones. We used 245 Malaise traps, managed by 191 volunteers and park guards, to characterize year-round flying insect biomass in a temperate (Sweden) and a tropical (Madagascar) country.

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Neutralizing antibodies are considered a correlate of protection against severe human respiratory syncytial virus (HRSV) disease. Currently, HRSV neutralization assays are performed on immortalized cell lines like Vero or A549 cells. It is known that assays on these cell lines exclusively detect neutralizing antibodies (nAbs) directed to the fusion (F) protein.

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Background: Medication prescribing by pharmacists is a task shifting approach to help ensure quality and accessibility of healthcare. In many countries, like the Netherlands, pharmacist prescribing is not legally ensured, and it is unknown what citizens think of its potential introduction.

Objective: To investigate citizen perspectives on the potential role of pharmacists in prescribing in primary care.

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Foliar fungi on urban trees are important for tree health, biodiversity and ecosystem functioning. Yet, we lack insights into how urbanization influences foliar fungal communities. We created detailed maps of Stockholm region's climate and air quality and characterized foliar fungi from mature oaks (Quercus robur) across climatic, air quality and local habitat gradients.

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Background: Deprescribing of medication for cardiovascular risk factors and diabetes has been incorporated in clinical guidelines but proves to be difficult to implement in primary care. Training of healthcare providers is needed to enhance deprescribing in eligible patients. This study will examine the effects of a blended training program aimed at initiating and conducting constructive deprescribing consultations with patients.

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