13,022 results match your criteria: "Medical Faculty of the University of Freiburg; Freiburg[Affiliation]"

Hyperpolarized (HP) C-labeled probes are emerging as promising agents to noninvasively image pH in vivo. HP [1,5-C]Z-OMPD (Z-4-methyl-2-oxopent-3-enedioic acid) in particular has recently been used to simultaneously report on kidney perfusion, filtration, and pH homeostasis, in addition to the ability to detect local tumor acidification. In previous studies, dissolution dynamic nuclear polarization was used to hyperpolarize Z-OMPD.

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Objectives: Ascites, often associated with critical pathologies such as liver cirrhosis or bowel perforation, can be complicated by fungal infection, increasing mortality especially in intensive care settings and demanding rapid diagnosis and adequate treatment. Traditional microbiological diagnostic methods have limited sensitivity in accurately identifying fungal pathogens in ascitic fluid. Alternative diagnostic methods may offer important insights to enable guiding of antifungal therapy and refining empirical treatment strategies.

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Identification of copper metabolism-related markers in Parkinson's disease.

Ann Med

December 2024

Department of Neurology, Liaocheng People's Hospital, Shandong University, Jinan, P.R. China.

Objectives: This study aimed to identify key genes related to copper metabolism in Parkinson's disease (PD), providing insight into their roles in disease progression.

Methods: Using bioinformatic analyses, the study identified hub genes related to copper metabolism in PD patients. Differentially expressed genes (DEGs) were identified using the limma package, and copper-metabolism-related genes (CMRGs) were sourced from the Genecard database.

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Background: The hippocampal formation represents a key region in the pathophysiology of schizophrenia. Aerobic exercise poses a promising add-on treatment to potentially counteract structural impairments of the hippocampal formation and associated symptomatic burden. However, current evidence regarding exercise effects on the hippocampal formation in schizophrenia is largely heterogeneous.

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An AMP-activated protein kinase-PGC-1α axis mediates metabolic plasticity in glioblastoma.

Clin Transl Med

November 2024

Dr. Senckenberg Institute of Neurooncology, University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany.

Glioblastoma, the most frequent primary malignant brain tumour in adults, is characterised by profound yet dynamic hypoxia and nutrient depletion. To sustain survival and proliferation, tumour cells are compelled to acquire metabolic plasticity with the induction of adaptive metabolic programs. Here, we interrogated the pathways necessary to enable processing of nutrients other than glucose.

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Ictal tachycardia in children with epilepsy.

Seizure

December 2024

Freiburg Epilepsy Center, Medical Center - University of Freiburg, Member of the ERN EpiCARE, Faculty of Medicine, University of Freiburg Freiburg, Germany; Department of Neuropediatrics and Muscle Disorders, Freiburg Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg Freiburg, Germany.

Background: Changes in heart rate (HR) may provide an extracerebral indicator of seizure onset. The purpose of this study is to assess the frequency and timing of presentation of ictal tachycardia in a larger series of children with epilepsy grouped in different age groups as well as the influence of seizure characteristics.

Methods: We retrospectively reviewed 732 seizures of 195 patients aged 0 to 14 (median 6.

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Glucocorticoids versus glucocorticoids plus cyclophosphamide in eosinophilic granulomatosis with polyangiitis with poor-prognosis factors.

J Autoimmun

December 2024

Department of Internal Medicine, Cochin Hospital, National Referral Center for Rare Systemic Autoimmune and Autoinflammatory Diseases of Ile de France, East and West, Assistance Publique - Hôpitaux de Paris, F-75014 Paris, France; Paris Cité University, F-75006, Paris, France. Electronic address:

Article Synopsis
  • The study aimed to assess the effectiveness of combining glucocorticoids (GCs) with cyclophosphamide (CYC) for treating patients with poor-prognosis eosinophilic granulomatosis with polyangiitis (EGPA) compared to using GCs alone.
  • Data from a European multicenter database were analyzed, involving 209 patients and focusing on relapse rates and other related outcomes over 12 to 24 months.
  • Results indicated that adding CYC significantly reduced the risk of relapse and related complications compared to GCs alone, suggesting a beneficial role for CYC in the treatment of poor-prognosis EGPA.
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The Microbiome Modifies Manifestations of Hemophagocytic Lymphohistiocytosis in Perforin-Deficient Mice.

Eur J Immunol

January 2025

Institute for Immunodeficiency, Center for Chronic Immunodeficiency (CCI), Medical Center- University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

Primary hemophagocytic lymphohistiocytosis (HLH) is a life-threatening hyperinflammatory syndrome caused by inborn errors of cytotoxicity. Patients with biallelic PRF1 null mutations (encoding perforin) usually develop excessive immune cell activation, hypercytokinemia, and life-threatening immunopathology in the first 6 months of life, often without an apparent infectious trigger. In contrast, perforin-deficient (PKO) mice only develop HLH after systemic infection with lymphocytic choriomeningitis virus (LCMV).

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Article Synopsis
  • Previous electroretinogram studies show that people with major depressive disorder (MDD) have reduced retinal contrast gain, affecting their visual perception.
  • The study compares contrast suppression in 21 MDD patients and 23 healthy controls (HC) using various stimuli and finds that MDD patients demonstrate less contrast suppression, especially with high stimulus contrast.
  • These findings suggest that altered dopamine function and changes in retinal processing may contribute to the visual perception issues observed in individuals with MDD.
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Defective germinal center selection results in persistence of self-reactive B cells from the primary to the secondary repertoire in Primary Antiphospholipid Syndrome.

Nat Commun

November 2024

Department of Clinical Immunology and Internal Medicine, National Reference Center for Systemic Autoimmune Diseases (CNR RESO), Tertiary Center for Primary Immunodeficiency, Strasbourg University Hospital, Strasbourg, France.

Primary antiphospholipid syndrome (PAPS) is a life-threatening clotting disorder mediated by pathogenic autoantibodies. Here we dissect the origin of self-reactive B cells in human PAPS using peripheral blood and bone marrow of patients with triple-positive PAPS via combined single-cell RNA sequencing, B cell receptors (BCR) repertoire profiling, CITEseq analysis and single cell immortalization. We find that antiphospholipid (aPL)-specific B cells are present in the naive compartment, polyreactive, and derived from the natural repertoire.

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High wall shear stress is related to complicated AHA lesion type VI plaques in mild to moderate internal carotid artery stenosis - a 3D cardiovascular MRI study.

AJNR Am J Neuroradiol

November 2024

From the Department of Neurology and Neurophysiology, Medical Center -University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany (C.S., A.H.), Department of Radiology - Medical Physics Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany. (A.J.K., U.L., J.H.), Die Radiologie, Rosenheim, Germany (T.S.), Deutsches Herzzentrum der Charité, Institute of Computer-assisted Cardiovascular Medicine, Berlin, Germany (M.H., A.He.), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany (M.H., A.He.), Fraunhofer Institute for Digital Medicine MEVIS, Berlin, Germany (M.H., A.He.).

Article Synopsis
  • The study explores the link between specific types of dangerous plaques (cCAPs) in carotid arteries and the risk of ischemic stroke, focusing on the role of blood flow dynamics.
  • Researchers examined 49 patients with mild internal carotid artery (ICA) stenosis using advanced imaging techniques (4D flow-MRI) to measure parameters like wall shear stress (WSS) and oscillatory shear index (OSI).
  • Findings revealed that higher WSS at certain points in the artery was significantly associated with the presence of cCAPs, suggesting that blood flow patterns could be important for identifying stroke risk.
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Bruton's tyrosine kinase (BTK) and matrix metalloproteinase-9 (MMP-9) regulate NLRP3 inflammasome-dependent cytokine and neutrophil extracellular trap responses in primary neutrophils.

J Allergy Clin Immunol

November 2024

Institute of Immunology, Department of Innate Immunity, University of Tübingen, Tübingen, Germany; iFIT-Cluster of Excellence (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies, " University of Tübingen, Tübingen, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ) Partner Site Tübingen, Tübingen, Germany; CMFI-Cluster of Excellence (EXC 2124) "Controlling Microbes to Fight Infection, " University of Tübingen, Tübingen, Germany. Electronic address:

Article Synopsis
  • Inflammation is essential for protecting the body but can also damage it; neutrophils play a key role in this process by releasing proteins and forming structures called NETs.
  • The study investigated the role of Bruton's tyrosine kinase (BTK) in regulating the NLRP3 inflammasome in neutrophils, as this aspect had not been previously explored.
  • Findings revealed that when BTK was absent or inhibited, there was an increase in the inflammatory responses in neutrophils, suggesting that BTK negatively regulates NLRP3 activation, which could have implications for using BTK inhibitors in treatment.
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Background: As the digital health landscape continues to evolve, analyzing the progress and direction of the field can yield valuable insights. The Journal of Medical Internet Research (JMIR) has been at the forefront of disseminating digital health research since 1999. A comprehensive network analysis of JMIR publications can help illuminate the evolution and trends in digital medicine over the past 25 years.

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Purpose: This study describes oncological outcomes and investigates prognostic factors for patients with gliosarcomas (GSM).

Methods: Histopathologically confirmed GSM patients who underwent treatment at five European institutions were retrospectively analyzed.

Results: We analyzed 170 patients with a median clinical follow-up time of 9.

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Article Synopsis
  • Non-university hospitals in Germany provide most inpatient care, making it crucial to analyze the quality of antimicrobial prescribing in these facilities.
  • A study conducted in 2021 across 10 hospitals in Baden-Württemberg revealed that 33% of patients received antimicrobial treatment, with most prescriptions being therapeutic.
  • Findings showed low adherence to quality indicators, highlighting the need for improved prescribing practices and the implementation of effective antimicrobial stewardship programs.
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Background: Despite great advances in proliferative diabetic retinopathy (PDR) therapy over the last decades, one third of treated patients continue to lose vision. While resident vitreous macrophages called hyalocytes have been implicated in the pathophysiology of vitreoretinal proliferative disease previously, little is known about their exact role in PDR. In this study, we address molecular and cellular alterations in the vitreous of PDR patients as a means towards assessing the potential contribution of hyalocytes to disease pathogenesis.

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Precision sampling of discrete sites identified during in-vivo functional testing in the mammalian heart.

Commun Eng

November 2024

KU Leuven, Department of Cardiovascular Sciences, Cardiovascular Imaging and Dynamics, Leuven, Belgium.

Ventricular arrhythmias after myocardial infarction (MI) originate from discrete areas within the MI border zone (BZ), identified during functional electrophysiology tests. Accurate sampling of arrhythmogenic sites for ex-vivo study remains challenging, yet is critical to identify their tissue, cellular and molecular signature. In this study, we developed, validated, and applied a targeted sampling methodology based on individualized 3D prints of the human-sized pig heart.

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Complementary and integrative healthcare (CIH) is increasingly recognized as a valuable approach to empowering and activating cancer patients. Studies have shown that higher patient activation is positively associated with improved health outcomes and reduced healthcare costs. The CCC-Integrativ study aimed to assess the implementation of an evidence-based counseling service on CIH at four Comprehensive Cancer Centers (CCC) in Germany.

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Background: Spontaneous intracerebral abscess formation is a rare condition presenting with a disabling sequela. The origin of infection can either be primary or secondary to an infection at another location. The site of primary infection - due to the proximity, often the oral cavity, the sinuses, and the orbit - determines the causative pathogens.

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  • Recessive dystrophic epidermolysis bullosa (RDEB) is a severe skin condition that causes blisters and other complications, and this study tested the safety of losartan, a medication that may slow its progression.
  • The study was a phase 1/2 trial involving children aged 2-16 with confirmed RDEB, focusing on identifying any serious side effects of losartan over a treatment period of 10 months.
  • Primary safety concerns monitored included severe drops in blood pressure, allergic reactions, and changes in potassium levels, along with evaluating the drug's effectiveness through various clinical scores.
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Introduction: Although numerous studies suggest that cochlear implantation (CI) generally alleviates the overall burden of tinnitus, certain patients experience tinnitus exacerbation following CI. The exact cause of this exacerbation is still uncertain. This prospective study aimed to investigate whether cochlear trauma, resulting from scalar dislocation of the electrode array, affected postoperative tinnitus intensity, tinnitus burden, and speech perception.

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Background: Following the pivotal phase II trial BOLT, the Hedgehog (Hh) inhibitor sonidegib was approved in the EU to treat locally advanced basal cell carcinoma (laBCC) in patients not amenable to surgery or radiotherapy. We report safety data from the interim analysis of the real-world NISSO study.

Methods: NISSO is an ongoing non-interventional, multinational, post-authorization safety study (NCT04066504).

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Background & Aims: Immune responses by CD8 T cells are essential for control of HBV replication. Although selection of escape mutations in CD8 T-cell epitopes has been previously described in HBV infection, its overall influence on HBV sequence diversity and correlation with markers of HBV replication remain unclear.

Methods: Whole-genome sequencing was applied to HBV isolates from 532 patients with chronic HBV infection and high-resolution HLA class I genotyping.

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Diagnosis of fetal alcohol spectrum disorders: German guideline version 2024.

Eur J Paediatr Neurol

November 2024

Department of Paediatric Neurology and Developmental Medicine, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University of Munich, Germany.

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