Publications by authors named "Dijkstra E"

Article Synopsis
  • The protocol outlines a method for studying human glioblastoma stem cells (GSCs) by introducing them into zebrafish larvae's midbrain for research purposes.
  • It includes steps for labeling these cells with immunofluorescence and using confocal imaging to view them.
  • The Cellpose algorithm is then employed for semi-automatic counting and analysis of the GSCs, allowing for objective measurement of their survival and growth.
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Background: Non-invasive brain stimulation, such as repetitive transcranial magnetic stimulation (rTMS), is increasingly used in the treatment of neurological diseases and psychiatric disorders. Where rTMS is already an accepted treatment option for depression, in the Netherlands/Belgium, no consensus exist on the application of rTMS for (obsessive-compulsive disorder (OCD). People with OCD who do not respond enough to exposure therapy and serotonergic antidepressants are in great need for treatment alternatives.

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Bacteria can be dead, alive, or exhibit slowed or suspended life forms, making bacterial death difficult to establish. Here, agar-plating, microscopic-counting, SYTO9/propidium-iodide staining, MTT-conversion, and bioluminescence-imaging were used to determine bacterial death upon exposure to different conditions. Rank correlations between pairs of assay outcomes were low, indicating different assays measure different aspects of bacterial death.

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Background: Education in electroconvulsive therapy (ECT) has become mandatory in the Dutch psychiatry training. ECT is still relatively rarely used. To increase knowledge about ECT, we have developed a training module about ECT for psychiatrist training.

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Article Synopsis
  • In 2023, an outbreak of bluetongue virus serotype 3 (BTV-3) in the Netherlands severely affected ruminants, particularly causing clinical signs and mortality in sheep.
  • Data from monitoring systems showed BTV-3 infections confirmed in multiple animal species, with sheep experiencing the most severe effects.
  • The study suggests that BTV-3 might persist through winter, emphasizing the need for effective vaccines to mitigate future outbreaks.
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Article Synopsis
  • In September 2023, the bluetongue virus serotype 3 (BTV-3) outbreak in the Netherlands affected over 5,000 livestock farms, leading to unusually high rates of sickness and death in sheep compared to past outbreaks.
  • The study analyzed livestock movement and BTV-3 notification data from 2020 to 2023 to measure the virus's impact on sheep and goats, revealing significant increases in mortality rates during the outbreak.
  • Notably, mortality in infected areas surged 4.2 times for lambs and 4.6 times for adult sheep, with confirmed cases showing even higher rates, while around 4,000 additional goat deaths were also reported.
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Article Synopsis
  • * The Netherlands was declared free of BTV in February 2012, but new cases were detected in September 2023, confirmed as serotype 3.
  • * The source of this latest infection is unknown, highlighting the need for ongoing monitoring and new prevention strategies to control BTV spread in the region.
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Background: Non-invasive forms of brain stimulation, including transcranial magnetic stimulation and direct current stimulation, are increasingly being considered by clinicians as a somatic treatment option for psychiatric disorders.

Aim: Review article on the history, efficacy transcranial brain stimulation in psychiatric disorders and the role of neural networks for improving clinical efficacy.

Method: Review of scientific literature.

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Background: Neurocardiac-guided transcranial magnetic stimulation (TMS) uses repetitive TMS (rTMS)-induced heart rate deceleration to confirm activation of the frontal-vagal pathway. Here, we test a novel neurocardiac-guided TMS method that utilizes heart-brain coupling (HBC) to quantify rTMS-induced entrainment of the interbeat interval as a function of TMS cycle time. Because prior neurocardiac-guided TMS studies indicated no association between motor and frontal excitability threshold, we also introduce the approach of using HBC to establish individualized frontal excitability thresholds for optimally dosing frontal TMS.

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Transcranial magnetic stimulation (TMS) is capable of noninvasively inducing lasting neuroplastic changes when applied repetitively across multiple treatment sessions. In recent years, repetitive TMS has developed into an established evidence-based treatment for various neuropsychiatric disorders such as depression. Despite significant advancements in our understanding of the mechanisms of action of TMS, there is still much to learn about how these mechanisms relate to the clinical effects observed in patients.

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The adult brain is made up of anatomically and functionally distinct regions with specific neuronal compositions. At the root of this neuronal diversity are neural stem and progenitor cells (NPCs) that produce many neurons throughout embryonic development. During development, NPCs switch from initial expanding divisions to neurogenic divisions, which marks the onset of neurogenesis.

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A booklet was developed in Canada in 2005 to inform family caregivers of people with dementia about end-of-life care. A Dutch version was published in 2011 after evaluation and revision. Developments in research and society call for a second revision.

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Introduction: Although optimising rectal cancer treatment has reduced local recurrence rates, many patients develop distant metastases (DM). The current study investigated whether a total neoadjuvant treatment strategy influences the development, location, and timing of metastases in patients diagnosed with high-risk locally advanced rectal cancer included in the Rectal cancer And Pre-operative Induction therapy followed by Dedicated Operation (RAPIDO) trial.

Material And Methods: Patients were randomly assigned to short-course radiotherapy followed by 18 weeks of CAPOX or FOLFOX4 before surgery (EXP), or long-course chemoradiotherapy with optional postoperative chemotherapy (SC-G).

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Background: Pre-operative chemoradiotherapy (CRT) rather than radiotherapy (RT) has resulted in fewer locoregional recurrences (LRRs), but no decrease in distant metastasis (DM) rate for patients with locally advanced rectal cancer (LARC). In many countries, patients receive post-operative chemotherapy (pCT) to improve oncological outcomes. We investigated the value of pCT after pre-operative CRT in the RAPIDO trial.

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Monitoring and surveillance systems have an increasingly important role in contemporary society ensuring high levels of animal health and welfare, securing export positions, and protecting public health by ensuring animal health and product safety. In the Netherlands, a voluntary monitoring and surveillance system is in place since 2003 to provide a broad overview of livestock trends in addition to disease-specific surveillance systems, including insight into the occurrence and prevalence of new and emerging non-notifiable diseases and disorders. Being a major surveillance component of this monitoring and surveillance system for small ruminant health in the Netherlands, an annual data analysis on routine census data is performed to retrospectively monitor trends and developments regarding goat health and welfare.

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Objective: To analyze risk and patterns of locoregional failure (LRF) in patients of the RAPIDO trial at 5 years.

Background: Multimodality treatment improves local control in rectal cancer. Total neoadjuvant treatment (TNT) aims to improve systemic control while local control is maintained.

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In contemporary society and modern livestock farming, a monitoring and surveillance system for animal health has become indispensable. In addition to obligations arising from European regulations regarding monitoring and surveillance of animal diseases, The Netherlands developed a voluntary system for the monitoring and surveillance of small ruminant health. This system aims for (1) early detection of outbreaks of designated animal diseases, (2) early detection of yet unknown disease conditions, and (3) insight into trends and developments.

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Background And Purpose: The RAPIDO trial demonstrated a decrease in disease-related treatment failure (DrTF) and an increase in pathological complete responses (pCR) in locally advanced rectal cancer (LARC) patients receiving total neoadjuvant treatment (TNT) compared to conventional chemoradiotherapy. This study examines health-related quality of life (HRQL), bowel function, and late toxicity in patients in the trial.

Materials And Methods: Patients were randomized between short-course radiotherapy followed by pre-operative chemotherapy (EXP), or chemoradiotherapy and optional post-operative chemotherapy (STD).

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