13,018 results match your criteria: "Medical Faculty of the University of Freiburg; Freiburg[Affiliation]"

Objectives: The increasing demand for alternatives to antibiotics against resistant bacteria has led to research on natural products. The aim of this study was to analyze the antimicrobial and antibiofilm activity of 16 Mediterranean herb extracts.

Materials And Methods: The extracts were analyzed using High Performance Thin Layer Chromatography.

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Mutations in tumor suppressor genes Vhl and Rassf1a cause DNA damage, chromosomal instability and induce gene expression changes characteristic of clear cell renal cell carcinoma.

Kidney Int

December 2024

Clinic of Internal Medicine I, Hematology, Oncology and Stem Cell Transplantation, Medical Centre - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Comprehensive Cancer Center Freiburg (CCCF), Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; German Cancer Consortium (DKTK), Partner Site Freiburg, Freiburg, Germany; Signalling Research Centres BIOSS and CIBSS, Faculty of Biology University of Freiburg, Freiburg, Germany. Electronic address:

RASSF1A is frequently biallelically inactivated in clear cell renal cell carcinoma (ccRCC) due to loss of chromosome 3p and promoter hypermethylation. Here we investigated the cellular and molecular consequences of single and combined deletion of the Rassf1a and Vhl tumor suppressor genes to model the common ccRCC genotype of combined loss of function of RASSF1A and VHL. In mouse embryonic fibroblasts and in primary kidney epithelial cells, double deletion of Rassf1a and Vhl caused chromosomal segregation defects and increased formation of micronuclei, demonstrating that pVHL and RASSF1A function to maintain genomic integrity.

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Purpose: Cumulative cisplatin doses of ≥ 200 mg/m improve survival in adults with head-and-neck squamous cell carcinoma (HNSCC) undergoing chemoradiation, but many older adults with HNSCC cannot receive this prognostically relevant dose due to toxicities. This study aims to develop predictive models to assess the likelihood of older adults with HNSCC receiving ≥ 200 mg/m cisplatin during chemoradiation.

Methods: 366 patients from the SENIOR database, an international cohort of adults ≥ 65 years with HNSCC, received definitive chemoradiation with single-agent cisplatin and were analyzed.

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Background And Purpose: External drainage represents a well-established treatment option for acute intracerebral hemorrhage. The current standard of practice includes post-operative computer tomography imaging, which is subjectively evaluated. The implementation of an objective, automated evaluation of postoperative studies may enhance diagnostic accuracy and facilitate the scaling of research projects.

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Objective: Large language models (LLMs) have recently gained attention for clinical decision-making and diagnosis. This study evaluates the performance of the recently updated LLM (ChatGPT-4o) in predicting clinical outcomes in patients with status epilepticus and compares its prognostic performance to the Status Epilepticus Severity Score (STESS).

Methods: This retrospective single-center cohort study was performed at the University Hospital Basel (tertiary academic medical center) from January 2005 to December 2022.

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Area Selective Atomic Layer Deposition for the Use on Active Implants: An Overview of Available Process Technology.

Adv Healthc Mater

December 2024

Institute for MicroSystems Technology (iMST), Faculty of Mechanical & Medical Engineering, Furtwangen University, D-78120, Furtwangen im Schwarzwald, Germany.

Area-selective atomic layer deposition (ASD) is a bottom-up process that is of particular importance in the semiconductor industry, as it prevents edge defects and avoids cost-intensive lithography steps. This approach not only offers immense potential for the manufacture of active implants but can also be used to improve them. This review paper presents various processes that can be used for this purpose.

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PRIO - a prospective integrative oncology registry: trial protocol.

Front Oncol

December 2024

Research Group Integrative Medicine, Department of General and Visceral Surgery, University Hospital Ulm, Ulm, Germany.

Background: Integrative Oncology (IO) - the use of lifestyle modifications, mind-body practices and natural products in oncology - is increasingly asked for by patients. The evidence base of IO is growing and IO measures are included in national guidelines. Still, many questions about IO remain unanswered or still show a poor evidence base.

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Focal cortical dysplasias (FCDs) are local malformations of the human neocortex and a leading cause of intractable epilepsy. FCDs are classified into different subtypes including FCD IIa and IIb, characterized by a blurred gray-white matter boundary or a transmantle sign indicating abnormal white matter myelination. Recently, we have shown that myelination is also compromised in the gray matter of FCD IIa of the temporal lobe.

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A xenogenic-free culture medium for cell micro-patterning systems as cell-instructive biomaterials for potential clinical applications.

Biomed Mater

December 2024

G.E.R.N. Research Center for Tissue Replacement, Regeneration & Neogenesis; Department of Orthopedics and Trauma Surgery, Faculty of Medicine, Medical Center-Albert-Ludwigs-University of Freiburg, Engesserstr. 4, Freiburg im Breisgau, 79108, GERMANY.

Cell micro-patterning controls cell fate and function and has potential for generating therapeutically usable mesenchymal stromal cell (MSC) populations with precise functions. However, to date, the micro-patterning of human cells in a translational context has been impossible because only ruminant media supplements, e.g.

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Contemporary studies of Bruton tyrosine kinase inhibitor (BTKi) resistance focus on mutations in the B-cell receptor (BCR) pathway, but alternative mechanisms of resistance remain undefined. Here, we sought to identify novel predictive markers of acquired resistance to acalabrutinib, a second-generation BTKi, in patients with chronic lymphocytic leukemia (CLL). Clinical samples from 41 patients with relapsed/refractory or treatment-naive CLL receiving acalabrutinib as part of a clinical trial (NCT02029443) were divided into two groups: those who continued to respond to treatment (NP, n = 23) and those who developed progressive disease on acalabrutinib therapy (PD, n = 18).

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Food insecurity and lifestyle behaviours in university students amidst the COVID-19 pandemic: a comparative survey across three countries.

BMC Public Health

December 2024

Department of Primary Care and Population Health, University of Nicosia Medical School, 21 Ilia Papakyriakou, 1st Floor, Block C, Engomi, Nicosia, Nicosia, 2414, Cyprus.

Background: University students, often unemployed and reliant on low-nutrition foods, are susceptible to food insecurity (FI) with potential physical and mental health challenges. This study explores FI and its impact on lifestyle behaviours among university students.

Methods: A cross-sectional web-based study was performed by sending an online questionnaire to university students in Lebanon, Cyprus, and Germany during the COVID-19 pandemic.

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Early Albumin Administration in Veno-Arterial Extracorporeal Membrane Oxygenation.

Artif Organs

December 2024

Department of Cardiology and Angiology, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.

Background: The clinical outcome and fluid balance of patients with veno-arterial extracorporeal membrane oxygenation (VA ECMO) or after extracorporeal cardiopulmonary resuscitation (eCPR) may be improved by addressing the high fluid demand with an early albumin administration.

Methods: In this prospective observational study, patients supported with VA ECMO or eCPR received early albumin administration (25 g/L) to prime the VA ECMO system. These patients were compared to patients who received a regimen based solely on balanced crystalloids (crystalloid group) or a regimen based on a 1:4 volume mixture of albumin (10 g/L) and balanced crystalloids (albumin group).

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Background: Timely diagnosis of heart failure (HF) in patients with a systemic right ventricle (sRV) is difficult but important since clinical deterioration is fast once HF develops. We aimed to compare echocardiography and biomarker profile between sRV patients with and without HF and patients with a systemic left ventricle diagnosed with HF (sLV-HF).

Methods And Results: Eighty-seven sRV patients and 30 sLV-HF patients underwent echocardiographic evaluation and blood sampling.

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Prognostic value of metabolic tumor volume on [F]FDG PET/CT in addition to the TNM classification system of locally advanced non-small cell lung cancer.

Cancer Imaging

December 2024

Department of Translational Imaging in Oncology, National Center for Tumor Diseases (NCT/UCC) Dresden, Medical Faculty and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Fetscherstraße 74, Dresden, 01307, Germany.

Purpose: Staging of non-small cell lung cancer (NSCLC) is commonly based on [F]FDG PET/CT, in particular to exclude distant metastases and guide local therapy approaches like resection and radiotherapy. Although it is hoped that PET/CT will increase the value of primary staging compared to conventional imaging, it is generally limited to the characterization of TNM. The first aim of this study was to evaluate the PET parameter metabolic tumor volume (MTV) above liver background uptake as a prognostic marker in lung cancer.

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[Major limb amputation in a geriatric patient following minor laceration].

Med Klin Intensivmed Notfmed

December 2024

Department of Orthopedics and Trauma Surgery, Faculty of Medicine, Medical Center - University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Deutschland.

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Integrating cancer into crisis: a global vision for action from WHO and partners.

Lancet Oncol

January 2025

Department of Noncommunicable Diseases, Rehabilitation and Disability, WHO, Geneva, Switzerland.

More than a billion people live in fragile, conflict-affected, and vulnerable settings requiring humanitarian support, where cancer is a substantial health issue. Despite its substantial effect on populations, cancer care remains underprioritised in emergency preparedness and response frameworks and humanitarian operational planning. This Policy Review summarises the perspectives and actionable recommendations from the First Global High-Level Technical Meeting on Non-communicable Diseases in Humanitarian Settings, with a focus on cancer.

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Exploration of histone protein γ-H2AX as a prognostic factor in soft tissue sarcomas and its association with biological behavior, immune cell environment and survival in leiomyosarcoma.

Int J Cancer

December 2024

Department I of Internal Medicine/Centre for Integrated Oncology Aachen Bonn Cologne Duesseldorf, University Hospital Cologne, Faculty of Medicine, University of Cologne, Cologne, Germany.

This study evaluates the H2AX/γ-H2AX expression in soft tissue sarcomas (STS), its implications for biological behavior and immune environment, and its potential as a prognostic biomarker. RNA-Seq data from 237 STS were obtained from The Cancer Genome Atlas project. Patients were stratified by H2AX mRNA expression using a survival-associated cutoff.

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Background: Though widely used, resting heart rate (RHR), as measured by a wearable device, has not been previously evaluated in a large cohort against a variety of important baseline characteristics.

Objective: This study aimed to assess the validity of the RHR measured by a wearable device compared against the gold standard of ECG (electrocardiography), and assess the relationships between device-measured RHR and a broad range of clinical characteristics.

Methods: The Project Baseline Health Study (PHBS) captured detailed demographic, occupational, social, lifestyle, and clinical data to generate a deeply phenotyped cohort.

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Although macrophages in the meningeal compartments of the central nervous system (CNS) have been comprehensively characterized under steady state, studying their contribution to physiological and pathological processes has been hindered by the lack of specific targeting tools in vivo. Recent findings have shown that the dural sinus and its adjacent lymphatic vessels act as a neuroimmune interface. However, the cellular and functional heterogeneity of extrasinusoidal dural macrophages outside this immune hub is not fully understood.

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Efficacy of CTLA-4 checkpoint therapy is dependent on IL-21 signaling to mediate cytotoxic reprogramming of PD-1CD8 T cells.

Nat Immunol

January 2025

Faculty of Medicine, Clinic for Internal Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Disease, University Medical Center Freiburg, Freiburg, Germany.

The mechanisms underlying the efficacy of anti-programmed cell death protein 1 (PD-1) and anti-cytotoxic T lymphocyte-associated protein 4 (CTLA-4) therapy are incompletely understood. Here, by immune profiling responding PD-1CD8 T (T) cell populations from patients with advanced melanoma, we identified differential programming of T cells in response to combination therapy, from an exhausted toward a more cytotoxic effector program. This effect does not occur with anti-PD-1 monotherapy.

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The treatment of relapsed/refractory acute myeloid leukemia (AML) is associated with a dismal prognosis. The allogeneic hematopoietic cell transplantation (allo-HCT) is frequently performed as salvage therapy. Reduced intensity conditioning protocols have been developed with the aim of reducing the leukemia burden without increasing their toxicity.

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Modeling heterogeneity in the progression of chronic kidney disease.

Nephrol Dial Transplant

December 2024

Institute of Genetic Epidemiology, Department of Data Driven Medicine, Faculty of Medicine and Medical Center - University of Freiburg, Freiburg, Germany.

Cohort studies with comprehensive follow-up periods that track patients with chronic kidney disease (CKD) and gather extensive health data are important for understanding the diverse progression patterns of CKD. This review explores the potential of emerging analytical techniques that can be applied in addition to conventional analysis approaches to enhance CKD research, by offering more detailed insights into disease progression. To maximize the insights available from CKD cohort data with extended follow-up, we examined two advanced approaches: analysis of disease trajectories and of recurrent events.

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Article Synopsis
  • In-hospital case-fatality rates for acute pulmonary embolism (PE) have been decreasing, but the annual incidence is rising, leading to more survivors requiring long-term care and treatment.
  • Hospital costs for acute PE are generally lower in Europe than in the US, but they can significantly increase for patients with additional health issues and need for urgent treatments.
  • The use of catheter-directed treatment (CDT) for PE is growing rapidly, with ongoing trials assessing their effectiveness and cost benefits, while structured outpatient programs could help alleviate the long-term socio-economic impact of PE on patients.
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