12,622 results match your criteria: "Leiden University Medical Center LUMC; 2333 ZA Leiden[Affiliation]"

Several studies have indicated that miRNAs play crucial roles in adipogenesis, insulin resistance, and inflammatory pathways associated with obesity and change after metabolic bariatric surgery (MBS). This systematic review explores and maps the existing literature on how miRNAs are expressed and investigates the unique miRNAs with the effects after MBS. The Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, and EMBASE were searched from 2019 until February 2024.

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Purpose: Catheter associated urinary tract infection (CAUTI) is the most common healthcare associated infection. A significant knowledge gap exists regarding the necessity of catheter replacement as part of CAUTI treatment. Current guidelines recommend replacement for faster recovery and to prevent recurrences, but adherence is low.

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Background: Vulvar squamous cell carcinoma (VSCC) is a rare cancer for which the cornerstone of treatment is surgery with high complication rates. The unmet need is a less radical and more effective treatment for VSCC.

Primary Objectives: To investigate the impact of mono-immunotherapy pembrolizumab as neoadjuvant treatment for primary resectable VSCC patients.

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Metal-implant associated bacterial infections are a major clinical problem due to antibiotic treatment failure. As an alternative, we determined the effects of bacteriophage ISP on clinical isolates of Staphylococcus aureus in various stages of its life cycle in relation to biofilm formation and maturation. ISP effectively eliminated all planktonic phase bacteria, whereas its efficacy was reduced against bacteria attached to the metal implant and bacteria embedded within biofilms.

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Evidence, what's in a name? Some methodological remarks on the Grading of Recommendations Assessment, Development, and Evaluation approach for guideline development.

J Thromb Haemost

September 2024

Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands; Department of Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands; Section of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

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The role of genetically-influenced phospholipid transfer protein activity in lipoprotein metabolism and coronary artery disease.

J Clin Lipidol

August 2024

Department of Human Genetics, Leiden University Medical Center, Leiden, the Netherlands (MMed Ao and Dr Willems van Dijk); Department of Internal Medicine, Division of Endocrinology, Leiden University Medical Center, Leiden, the Netherlands (Drs Rensen and Willems van Dijk); Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, the Netherlands (Drs Rensen and Willems van Dijk).

Article Synopsis
  • A study was conducted to explore how genetically-influenced phospholipid transfer protein (PLTP) activity relates to metabolomic measures and coronary artery disease (CAD) risk, using data from the UK Biobank.
  • Results revealed that low PLTP activity is linked to a higher concentration of HDL particles, smaller HDL size, and higher triglyceride levels, but did not show any connection to CAD risk.
  • Additionally, even when taking into account low levels of LDL cholesterol, low PLTP activity did not provide any extra risk for CAD, indicating its role may be more about lipid profile than heart disease directly.
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Introduction: Behavior change techniques (BCTs) are considered as active components of implementation strategies, influencing determinants and, ultimately, implementation performance. In our previous Delphi study, experts formulated 'implementation hypotheses', detailing how specific combinations of BCTs and strategies (referred to as BCT-strategy combinations) might influence determinants and guideline implementation within youth care. For example, educational meetings providing instructions on guideline use were hypothesized to enhance practitioners' knowledge and, consequently, guideline implementation.

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Background: Despite dengue virus (DENV) outbreak in Gabon a decade ago, less is known on the potential circulation of DENV serotypes in the country. Previous studies conducted in some areas of the country, are limited to hospital-based surveys which reported the presence of some cases of serotype 2 and 3 seven years ago and more recently the serotype 1. As further investigation, we extend the survey to the community of Moyen Ogooué region with the aim to assess the presence of the dengue virus serotypes, additionally to characterize chikungunya (CHIKV) infection and describe the symptomatology associated with infections.

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Spatial metabolomics in tissue injury and regeneration.

Curr Opin Genet Dev

August 2024

Department of Internal Medicine (Nephrology) & Einthoven Laboratory of Vascular and Regenerative Medicine & The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

Tissue homeostasis is intricately linked to cellular metabolism and metabolite exchange within the tissue microenvironment. The orchestration of adaptive cellular responses during injury and repair depends critically upon metabolic adaptation. This adaptation, in turn, shapes cell fate decisions required for the restoration of tissue homeostasis.

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Background: Little is known about the provision of work-related support for (self-)employed people with rheumatoid arthritis (RA) or axial spondyloarthritis (axSpA) by healthcare providers (HCPs) or employers.

Objective: This study aims to explore the experiences of (self-)employed people with RA or axSpA regarding work-related support from HCPs and employers in the Netherlands.

Methods: This cross-sectional study concerned an online survey for (self-)employed people, aged ≥ 16 years and diagnosed with RA or axSpA.

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Background: The antibody-drug conjugate sacituzumab govitecan is approved for metastatic triple-negative breast cancer and has shown promising results in various other types of cancer. Its costs may limit patient access to this novel effective treatment modality.

Objective: The purpose of this study was to develop an evidence-based rational dosing regimen that results in targeted drug exposure within the therapeutic range while minimizing financial toxicity, to improve treatment access.

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Background And Purpose: Current follow-up protocols for adolescent idiopathic scoliosis (AIS) are based on consensus and consist of regular full-spine radiographs to monitor curve progression and surgical complications. Consensus exists to avoid inappropriate use of radiographs in children. It is unknown whether a standard radiologic follow-up (S-FU) approach is necessary or if a patient-empowered follow-up (PE-FU) approach can reduce the number of radiographs without treatment consequences.

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Objective: To understand (1) what guidance exists to assess the methodological quality of qualitative research; (2) what methods exist to grade levels of evidence from qualitative research to inform recommendations within European Alliance of Associations for Rheumatology (EULAR).

Methods: A systematic literature review was performed in multiple databases including PubMed/Medline, EMBASE, Web of Science, COCHRANE and PsycINFO, from inception to 23 October 2020. Eligible studies included primary articles and guideline documents available in English, describing the: (1) development; (2) application of validated tools (eg, checklists); (3) guidance on assessing methodological quality of qualitative research and (4) guidance on grading levels of qualitative evidence.

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TAPVR: Molecular Pathways and Animal Models.

Adv Exp Med Biol

June 2024

Department Anatomy and Embryology, Leiden University Medical Center, Leiden, The Netherlands.

The venous pole of the heart where the pulmonary veins will develop encompasses the sinus venosus and the atrium. In the fourth week of development, the sinus venosus consists of a left and a right part receiving blood from the common cardinal vein, the omphalomesenteric and umbilical veins. Asymmetrical expansion of the common atrium corresponds with a rightward shift of the connection of the sinus to the atrium.

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Total Anomalous Pulmonary Venous Connections, Human Genetics.

Adv Exp Med Biol

June 2024

Department Anatomy & Embryology, Leiden University Medical Center, Leiden, The Netherlands.

Partial anomalous pulmonary venous connections (PAVC) have been found after abnormal gene expressions involving several syndromes. Total anomalous pulmonary venous connection (TAPVC) is found in conjunction with heterotaxia syndrome as well as several other syndromes. It has been reported with an autosomal dominance with variable expression and incomplete penetrance.

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Article Synopsis
  • The nervous system has a lot of miRNAs which play key roles in cognitive processes, and imbalances in these molecules may be linked to dementia, particularly Late-Onset Alzheimer's Disease (LOAD).
  • Researchers conducted RNA sequencing on blood samples from LOAD patients and healthy elderly individuals to profile circulating miRNAs (c-miRNAs).
  • They identified seven c-miRNAs that were significantly different in LOAD patients, and five of these were analyzed further, discovering connections to 44 target genes linked to LOAD, thus highlighting their potential as biomarkers for diagnosing this condition.
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Article Synopsis
  • Melanocytic neoplasms with spitzoid histomorphology are tricky to classify without genetic testing, as traditional methods often provide unclear results.
  • The Idylla GeneFusion Assay has been compared to the Archer fusion assay on its ability to detect certain gene fusions (ALK, pan-NTRK, RET, and ROS1), showing promising results with a 75% sensitivity and 100% specificity in analyzing 147 samples.
  • Idylla is effective with isolated RNA and could be a useful initial screening tool for spitzoid melanocytic tumors, even though it may not replace more detailed tests like the Archer assay.
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Corrigendum to "Temporal associations between salivary cortisol and emotions in clinically depressed individuals and matched controls: A dynamic time warp analysis" [Psychoneuroendocrinology 158 (2023) 106394].

Psychoneuroendocrinology

September 2024

Department of Psychiatry, Leiden University Medical Center, Leiden, the Netherlands; Collaborative Antwerp Psychiatric Research Institute (CAPRI), Department of Biomedical Sciences, University of Antwerp, Belgium. Electronic address:

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Objective: The aim of this study was to explore local practices and perceptions of effective nurse-resident communication during shifts. Subsequently, effective communication was sought to be reinforced by implementing an initiative for improvement.

Design: A mixed-methods study was performed, combining a questionnaire with focus groups.

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Background Context: Currently, there is no universally accepted method for assessing radiological fusion shortly after anterior cervical discectomy. Five-year follow-up radiological X-rays demonstrating solid fusion or absence of fusion provided a gold standard for comparison with various assessment methods.

Purpose: Establishing the most accurate diagnostic test for earlier bony fusion assessment by comparing different cut-off values for the difference in interspinous distance and the change in Cobb angle on dynamic radiological images against the established gold standard.

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The STARlet All-In-One system is a modular platform that integrates the complete molecular diagnostic workflow from nucleic acid extraction of clinical samples to PCR set-up and amplification. The platform was evaluated in comparison with laboratory developed tests (LDT) on fecal samples from patients with suspected viral gastro-enteritis. In a retrospective study, 72 positive samples were analysed, including all pathogens detected by the Seegene Allplex™ GI-virus assay, adenovirus, astrovirus, norovirus GI and GII, sapovirus, and rotavirus.

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The socio-relational focus of youth peer support workers (YPSWs) poses a challenge when YPSWs are embedded in medical oriented contexts common to child and adolescent mental health services (CAMHS); as it requires YPSWs to find a balance between being a peer on one hand, and adhering to professional boundaries and medical standards set out by CAMHS on the other. To create a suitable position for YPSWs in CAMHS, this study investigated the unique socio-relational contributions YPSWs can make to CAMHS in addition to clinicians, and identified how these contributions can be embedded within CAMHS. This study reports on 37 semi-structured interviews conducted in the Netherlands with youth (n = 10), YPSWs (n = 10), and clinicians (n = 17).

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