847 results match your criteria: "University of Groningen and University Medical Center Groningen.[Affiliation]"

The maternal body mass index and first-trimester placental (vascular) development.

Placenta

December 2024

Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center, Rotterdam, the Netherlands. Electronic address:

Background: Maternal obesity is associated with maternal complications, including hypertensive disorders of pregnancy (HDP), and related fetal complications, such as fetal growth restriction. During pregnancy, the placenta is one of the key regulators of embryonic and fetal growth. Previous studies mainly investigated placental growth by measuring postpartum placental weight.

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Motivation: We are witnessing an enormous growth in the amount of molecular profiling (-omics) data. The integration of multi-omics data is challenging. Moreover, human multi-omics data may be privacy-sensitive and can be misused to de-anonymize and (re-)identify individuals.

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Multiple Sclerosis: Glial Cell Diversity in Time and Space.

Glia

December 2024

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Multiple sclerosis (MS) is the most prevalent human inflammatory disease of the central nervous system with demyelination and glial scar formation as pathological hallmarks. Glial cells are key drivers of lesion progression in MS with roles in both tissue damage and repair depending on the surrounding microenvironment and the functional state of the individual glial subtype. In this review, we describe recent developments in the context of glial cell diversity in MS summarizing key findings with respect to pathological and maladaptive functions related to disease-associated glial subtypes.

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A subpopulation of astrocytes expressing WD Repeat Domain 49 (WDR49) was recently identified in frontotemporal lobar degeneration (FTLD) with GRN pathogenic variants. This is the first study to investigate their expression and relation to pathology in other FTLD subtypes and Alzheimer's disease (AD). In a postmortem cohort of TDP-43 proteinopathies (12 GRN, 11 C9orf72, 9 sporadic TDP-43), tauopathies (13 MAPT, 8 sporadic tau), 10 AD, and four controls, immunohistochemistry and immunofluorescence were performed for WDR49 and pathological inclusions on frontal, temporal, and occipital cortical sections.

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Objectives: This study aimed to assess (1) effects of abatacept on salivary gland histology of Sjögren's disease (SjD) patients, (2) the predictive value of salivary gland histopathological characteristics at baseline for clinical response to abatacept treatment.

Methods: Patients (n=41) who participated in the Dutch ASAP-II and ASAP-III trials and international abatacept trial (IM101603) from whom a labial (n=13) or parotid (n=28) salivary gland biopsy was obtained at baseline and after 24 weeks of treatment with abatacept were included. Biopsies were analysed for SjD related histopathological features before and after abatacept (n=25) or placebo (n=16) treatment.

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Magnetic control of soft microrobots near step-out frequency: Characterization and analysis.

Comput Struct Biotechnol J

December 2024

RAM-Robotics and Mechatronics, University of Twente, Enschede, 7500 AE, the Netherlands.

Magnetically actuated soft microrobots hold promise for biomedical applications that necessitate precise control and adaptability in complex environments. These microrobots can be accurately steered below their step-out frequencies where they exhibit synchronized motion with external magnetic fields. However, the step-out frequencies of soft microrobots have not been investigated yet, as opposed to their rigid counterparts.

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Background: The run-in period is an important element of randomized controlled trials, and is often used in respiratory disease trials. The design of the run-in period can greatly impact results and data interpretation, and as such should be designed carefully.

Methods: In this review, we describe the design of run-in periods across six phase 3A trials of triple therapy in asthma, and discuss how differences in run-in period design (specifically the duration, treatment, and reporting of run-in results) may have the potential to alter the interpretation of study outcomes.

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Introduction: In this study we aimed to identify behaviours representative of agentic engagement in pre-clinical medical education problem-based learning (PBL) groups. Agentic engagement is defined as the proactive, intentional contributions students make to their flow of instruction. This concept, developed in secondary education, appears relevant for benefitting optimally from PBL in higher medical education.

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International consensus statement on microbiome testing in clinical practice.

Lancet Gastroenterol Hepatol

December 2024

Department of Translational Medicine and Surgery, Università Cattolica del Sacro Cuore, Rome, Italy; Department of Medical and Surgical Sciences, UOC Gastroenterologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy. Electronic address:

There is growing interest in the potential exploitation of the gut microbiome as a diagnostic tool in medicine, but evidence supporting its clinical usefulness is scarce. An increasing number of commercial providers offer direct-to-consumer microbiome diagnostic tests without any consensus on their regulation or any proven value in clinical practice, which could result in considerable waste of individual and health-care resources and potential drawbacks in the clinical management of patients. We convened an international multidisciplinary expert panel to standardise best practices of microbiome testing for clinical implementation, including recommendations on general principles and minimum requirements for their provision, indications, pre-testing protocols, method of analyses, reporting of results, and potential clinical value.

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Chemical and functional inheritance of carbon quantum dots hydrothermally-derived from chitosan.

J Colloid Interface Sci

December 2024

University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands. Electronic address:

Article Synopsis
  • Carbon quantum dots (CQDs), due to their small size, can easily cross biological barriers, making them useful in various biomedical applications.
  • Using hydrothermal methods at 180°C, CQDs derived from chitosan and HAC-chitosan have similar elemental and molecular properties, while also generating reactive oxygen species.
  • The CQDs demonstrate strong antibacterial properties against bacteria like Staphylococcus aureus and Escherichia coli, suggesting potential uses in wound healing, food preservation, agriculture, water treatment, and personal care products.
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Article Synopsis
  • - The study examined survival scenarios for pancreatic adenocarcinoma (PAC) patients over 16 years, highlighting best-case, typical, and worst-case survival estimates based on data from the Netherlands Cancer Registry.
  • - Patients with localized PAC showed statistically significant improvements in best-case and typical survival scenarios, with gains averaging 1.54 and 0.24 months annually, respectively, while those with metastatic PAC experienced smaller but significant improvements.
  • - Factors like age, aggressive treatments, and fewer comorbidities were linked to better survival outcomes, suggesting that recent advancements in care may offer hopeful prospects for PAC patients, despite small absolute survival gains.
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Article Synopsis
  • International guidelines for imaging follow-up after pancreatic resection for pancreatic ductal adenocarcinoma (PDAC) are inconsistent, leading to varied follow-up strategies globally.
  • The study aimed to compare clinical outcomes, including treatment for recurrence and survival rates, between patients who received either symptomatic follow-up or routine imaging after PDAC surgery across 33 international centers.
  • A total of 333 patients were analyzed, showing that 29% had symptomatic follow-up while 71% underwent routine imaging, with overall survival rates being examined through statistical methods to identify the impact of the follow-up strategy on patient outcomes.
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Comparing mechanical and enzymatic isolation procedures to isolate adipose-derived stromal vascular fraction: A systematic review.

Wound Repair Regen

November 2024

Department of Plastic, Reconstructive and Hand Surgery, University Medical Center Utrecht, University of Utrecht, Utrecht, The Netherlands.

The stromal vascular fraction of adipose tissue has gained popularity as regenerative therapy for tissue repair. Both enzymatic and mechanical intraoperative SVF isolation procedures exist. To date, the quest for the preferred isolation procedure persists, due to the absence of standardised yield measurements and a defined clinical threshold.

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Bacterial killing and the dimensions of bacterial death.

NPJ Biofilms Microbiomes

September 2024

University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands.

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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Assessment of liver graft quality during hypothermic oxygenated perfusion: the first international validation study.

J Hepatol

September 2024

Department of Surgery and Transplantation, Swiss HPB Centre, University Hospital Zurich, Switzerland; Division of Visceral Surgery, University Digestive Health Care Centre Clarunis, University Hospital Basel, Switzerland. Electronic address:

Article Synopsis
  • Scientists are studying how to tell if a donated liver is healthy enough to use for transplant by looking at special markers during a process called HOPE.
  • They collected samples from livers in 10 different centers across 7 countries and found that the levels of a marker called FMN can help predict if the liver will work well after being transplanted.
  • The study showed that FMN is better at predicting liver problems compared to older methods, making it a promising tool for doctors to decide which livers are suitable for transplant.
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Type 1 diabetes mellitus (T1DM) is a growing global health concern that affects approximately 8.5 million individuals worldwide. T1DM is characterized by an autoimmune destruction of pancreatic β cells, leading to a disruption in glucose homeostasis.

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Article Synopsis
  • The study examines the link between periodontitis (a serious gum infection) and various cardiometabolic and blood clotting factors in patients needing full mouth extraction compared to a control group.
  • Results showed that individuals with periodontitis had higher von Willebrand factor (VWF) and C-reactive protein (CRP) levels, but these factors didn't improve after extraction.
  • The research suggests that while VWF is associated with the severity of periodontitis, treating periodontitis may not significantly affect blood profiles in individuals without existing cardiometabolic disease.
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Background: Bile's potential to reflect the health of the biliary system has led to increased attention, with proteomic analysis offering deeper understanding of biliary diseases and potential biomarkers. With the emergence of normothermic machine perfusion (NMP), bile can be easily collected and analyzed. However, the composition of bile can make the application of proteomics challenging.

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Functional profiling of CHAP domain-containing peptidoglycan hydrolases of Staphylococcus aureus USA300 uncovers potential targets for anti-staphylococcal therapies.

Int J Med Microbiol

September 2024

Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. box 30001, Groningen 9700 RB, the Netherlands. Electronic address:

The bacterial pathogen Staphylococcus aureus employs a thick cell wall for protection against physical and chemical insults. This wall requires continuous maintenance to ensure strength and barrier integrity, but also to permit bacterial growth and division. The main cell wall component is peptidoglycan.

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Background: The plasma metabolome reflects the physiological state of various biological processes and can serve as a proxy for disease risk. Plasma metabolite variation, influenced by genetic and epigenetic mechanisms, can also affect the cellular microenvironment and blood cell epigenetics. The interplay between the plasma metabolome and the blood cell epigenome remains elusive.

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Background: Although medical courses are frequently evaluated via surveys with Likert scales ranging from "" to "," low response rates limit their utility. In undergraduate medical education, a new method with students predicting what their peers would say, required fewer respondents to obtain similar results. However, this prediction-based method lacks validation for continuing medical education (CME), which typically targets a more heterogeneous group than medical students.

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