2,691 results match your criteria: "University Hospital Aachen. [corrected][Affiliation]"

Deep learning (DL) holds great promise to improve medical diagnostics, including pathology. Current DL research mainly focuses on performance. DL implementation potentially leads to environmental consequences but approaches for assessment of both performance and carbon footprint are missing.

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A bioprinted and scalable model of human tubulo-interstitial kidney fibrosis.

Biomaterials

December 2024

Department of Medicine 2 (Nephrology, Rheumatology, Clinical Immunology, Hypertension), RWTH Aachen University Medical Faculty, Aachen, Germany; Department of Internal Medicine, Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, the Netherlands. Electronic address:

Chronic kidney disease (CKD) affects more than 10% of the global population. As kidney function negatively correlates with the presence of interstitial fibrosis, the development of new anti-fibrotic therapies holds promise to stabilize functional decline in CKD patients. The goal of the study was to generate a scalable bioprinted 3-dimensional kidney tubulo-interstitial disease model of kidney fibrosis.

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MicroRNAs and RNA-Binding Protein-Based Regulation of Bone Metastasis from Hepatobiliary Cancers and Potential Therapeutic Strategies.

Cells

November 2024

Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), RWTH University Hospital Aachen, D-52074 Aachen, Germany.

Hepatobiliary cancers, such as hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA), are among the deadliest malignancies worldwide, leading to a significant number of cancer-related deaths. While bone metastases from these cancers are rare, they are highly aggressive and linked to poor prognosis. This review focuses on RNA-based molecular mechanisms that contribute to bone metastasis from hepatobiliary cancers.

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Histological slides contain numerous artifacts that can significantly deteriorate the performance of image analysis algorithms. Here we develop the GrandQC tool for tissue and multi-class artifact segmentation. GrandQC allows for high-precision tissue segmentation (Dice score 0.

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Mast cell (MC)-driven allergic diseases are constantly expanding and require the development of novel pharmacological MC stabilizers. Allergen/antigen (Ag)-triggered activation via crosslinking of the high-affinity receptor for IgE (FcεRI) is fundamentally regulated by SRC family kinases, for example, LYN and FYN, exhibiting positive and negative functions. We report that KIRA6, an inhibitor for the endoplasmic reticulum stress sensor IRE1α, suppresses IgE-mediated MC activation by inhibiting both LYN and FYN.

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Autonomous medical evaluation for guideline adherence of large language models.

NPJ Digit Med

December 2024

Department of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine and Health, Klinikum rechts der Isar, TUM University Hospital, Munich, Germany.

Autonomous Medical Evaluation for Guideline Adherence (AMEGA) is a comprehensive benchmark designed to evaluate large language models' adherence to medical guidelines across 20 diagnostic scenarios spanning 13 specialties. It includes an evaluation framework and methodology to assess models' capabilities in medical reasoning, differential diagnosis, treatment planning, and guideline adherence, using open-ended questions that mirror real-world clinical interactions. It includes 135 questions and 1337 weighted scoring elements designed to assess comprehensive medical knowledge.

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Patients with diabetes mellitus (DM) and chronic kidney disease (CKD) exhibit an elevated risk for cardiac arrhythmias, such as bradycardia, which may potentially lead to sudden cardiac death (SCD). While hypoglycemia, defined as a critical drop in glucose levels below the normal range, has long been associated with adverse cardiovascular events, recent studies have highlighted the need for a comprehensive reevaluation of its direct impact on cardiovascular outcomes, particularly in high-risk populations such as those with DM and CKD. In this study, we investigated the association between glucose levels and bradycardia by simultaneously monitoring interstitial glucose (IG) and ECG for 7 days in insulin-treated patients with DM and CKD.

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Surgical pathology and sustainable development: international landscape and prospects.

J Clin Pathol

December 2024

Department of Surgical Pathology, CHU de Bordeaux Pôle biologie et pathologie, Bordeaux, France.

The healthcare sector significantly contributes to global greenhouse gas emissions, with surgical pathology (SP) playing a notable role. This review explores the ecological transformation of SP, offering a global overview of existing challenges and sustainable initiatives worldwide.While some countries, such as the UK and France, have developed national strategies to reduce the carbon footprint of healthcare, including SP, many regions remain at an early stage of implementing green practices.

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In this study, standard 2D lung lobe quantification is compared with two 3D lung lobe quantification software tools to investigate the clinical benefit of a 3D approach. The accuracy of 2D versus 3D lung lobe quantification is evaluated based on the calculated numerical ventilation-perfusion ratio (VQR) using a receiver operating curve (ROC) analysis.A study group of 50 consecutive patients underwent a planar lung scintigraphy (anterior/posterior) as well as ventilation/perfusion single photon emission computed tomography (SPECT/CT) to exclude acute pulmonary embolism.

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A 34-year-old male patient presented with a clinical picture of multilocular subcutaneous skin nodules in addition to marked lymphadenopathy and general physical deterioration. A comprehensive diagnostic workup including serology, skin biopsy and imaging studies led to the initial diagnosis of human immunodeficiency virus (HIV) infection in AIDS stage with rare multilocular subcutaneous bacillary angiomatosis (BA) caused by Bartonella henselae. BA describes a process of neovascularisation of the skin or of internal organs (particularly the liver and spleen) and was first described in HIV-positive patients by Stoler et al.

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Background: Clinical decision support systems (CDSSs) are designed to assist in health care delivery by supporting medical practice with clinical knowledge, patient information, and other relevant types of health information. CDSSs are integral parts of health care technologies assisting in disease management, including diagnosis, treatment, and monitoring. While electronic medical records (EMRs) serve as data repositories, CDSSs are used to assist clinicians in providing personalized, context-specific recommendations derived by comparing individual patient data to evidence-based guidelines.

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Calibrations in LA-ICP-MS are typically very time-consuming and complex, as they need to be matched to the samples being measured and sectioned on a microtome. Alternatively, gelatin can be in droplet form or as a section, which is a more recent development. In this study, we report on investigations where hot multi-element gelatin solutions are placed in a linear fashion on microscopic slides to conduct comparative statistical observations between doped tissue homogenates from the liver and lung.

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Background: The Neuro-2a cell line, derived from a murine neuroblastoma (NB), was established as early as 1969 and originates from a transplantable tumor that arose spontaneously in an A/Jax male mouse in 1940. Since then, it has been applied in over 10,000 studies and is used by the World Organization for Animal Health for the routine diagnosis of rabies. Surprisingly, however, Neuro-2a has never been genetically characterized in detail; this study fills that gap.

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Unlocking Potential: A Comprehensive Overview of Cell Culture Banks and Their Impact on Biomedical Research.

Cells

November 2024

Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital Aachen, D-52074 Aachen, Germany.

Cell culture banks play a crucial role in advancing biomedical research by providing standardized, reproducible biological materials essential for various applications, from drug development to regenerative medicine. This opinion article presents a comprehensive overview of cell culture banks, exploring their establishment, maintenance, and characterization processes. The significance of ethical considerations and regulatory frameworks governing the use of cell lines is discussed, emphasizing the importance of quality control and validation in ensuring the integrity of research outcomes.

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Aggressive Lymphoma after CD19 CAR T-Cell Therapy.

N Engl J Med

October 2024

From the Department of Hematology, Oncology and Clinical Immunology (G.K., B.-N.B., P.-M.B., N.L., A.R., M. Seifert, C.S., U.G., R.-P.C., K.N., P.J., T.U., S.D.), the Institute of Pathology (M. Seidel, I.E.), the Institute for Transplantation Diagnostics and Cellular Therapy (J.C.F., J.M.R.), the Departments of Nuclear Medicine (F.G.), Rheumatology (J.H.W.D.), and Neurology (S.G.M.), and the Hiller Research Center (J.H.W.D.), University Hospital Düsseldorf, the Center for Integrated Oncology, Aachen-Bonn-Cologne-Düsseldorf (G.K., B.-N.B., P.-M.B., N.L., A.R., M. Seifert, C.S., U.G., R.-P.C., K.N., P.J., T.U., S.D.), and the Department of Diagnostic and Interventional Radiology, University Düsseldorf (G.A.), Düsseldorf, Medical Department II, Hematology and Oncology (M.B., H.T.), and the Department of Pathology (I.I.), University Medical Center Schleswig-Holstein, Kiel, the Department of Hematology, Oncology and Cancer Immunology, Campus Virchow, Charité-Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin (L.W., F.D.), Berlin Institute of Health, Charité Universitätsmedizin Berlin (S.Y., S.H.), and Berlin Institute for Medical Systems Biology, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (S.Y., S.H.), Berlin, the Computational Oncology Group, Molecular Precision Oncology Program, National Center for Tumor Diseases Heidelberg (N.P.), the Innovation and Service Unit for Bioinformatics and Precision Medicine (D.H.), German Cancer Research Center, the European Molecular Biology Laboratory, Molecular Medicine Partnership Unit (D.F.), German Cancer Consortium (D.H., S.H., F.D.), the Pattern Recognition and Digital Medicine Group, Heidelberg Institute for Stem Cell Technology and Experimental Medicine (D.H.), the Medical Faculty of Heidelberg (J.L.) and the Department of Medicine V (S.D.), Heidelberg University, German Cancer Consortium, partner site Berlin, and German Cancer Research Center (S.H., F.D.), Heidelberg, the Department of Hematology and Medical Oncology, University Medical Center Göttingen, Göttingen (R.K.), and the Department of Internal Medicine I, University Hospital Aachen, RWTH Aachen University, Aachen (M.J.) - all in Germany; and Biomedical Research, Novartis (S.L., P.U.), and Novartis Pharma (H.D.M., H.J.M., J.G.) - both in Basel, Switzerland.

The development of a fatal, clonal, autonomously proliferating CD4-CD8- chimeric antigen receptor (CAR)+ peripheral T-cell lymphoma (PTCL) occurred 1 month after a patient received treatment with tisagenlecleucel for relapsed primary central nervous system lymphoma. The PTCL had a clonal T-cell receptor rearrangement, which was already detectable in the apheresis product for CAR T-cell manufacturing and 7 months earlier for autologous transplantation. Somatic and mutations in CD34+ stem cells and their progeny were detected in the PTCL, in the apheresis specimen that was obtained for CAR T-cell production, and in the autotransplant.

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Article Synopsis
  • Climate change is a significant global health issue, and the healthcare sector, particularly urology, is beginning to adopt Planetary Health concepts to reduce CO emissions from medical procedures.
  • This study presented a new method for analyzing the life cycle emissions of single-use and reusable flexible ureterorenoscopes (fURS), revealing that reusable fURS have a lower environmental and health impact compared to single-use devices.
  • The research highlighted that the production and reprocessing stages contribute the most to greenhouse gas emissions and health impacts, emphasizing the need for incorporating sustainable practices in healthcare.
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Medical image classification requires labeled, task-specific datasets which are used to train deep learning networks de novo, or to fine-tune foundation models. However, this process is computationally and technically demanding. In language processing, in-context learning provides an alternative, where models learn from within prompts, bypassing the need for parameter updates.

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Objectives: Subarachnoid hemorrhage (SAH) may critically impair cardiovascular, metabolic, and gastrointestinal function. Previous research has demonstrated compromised drug absorption in this group of patients. This study aimed to examine the impact of SAH on gastrointestinal function and its subsequent effect on the absorption of enterally administered drugs, using esomeprazole as a probe drug.

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Background: Heart failure (HF) is a chronic disease characterized by high mortality and healthcare expenditures. Digital health solutions, including mobile health applications (apps), offer opportunities to enhance patients' self-care and quality of life. This qualitative study aimed to explore expectations, experiences, and usage behaviour of HF-patients regarding a self-care app ( app).

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Article Synopsis
  • Artificial organs like oxygenators and dialyzers struggle with uneven flow distribution, leading to clot formation and reduced efficiency.
  • This study introduces triply periodic minimal surfaces (TPMS) to enhance flow distribution and examines their impact on blood coagulation through computational fluid dynamics and blood testing.
  • Results show that TPMS, especially anisometric designs, improve flow distribution and significantly reduce blood clotting compared to traditional tubular designs, while also allowing for customizable inner surfaces for better functionality.
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Article Synopsis
  • The study compares the clinical outcomes of two groups of patients undergoing type A aortic dissection repair: those who received deep hypothermic circulatory arrest (DHCA) at temperatures <20°C and those given moderate hypothermic circulatory arrest (MHCA) at 20-28°C.
  • Results showed that the DHCA group had significantly higher rates of complications like acute kidney injury (AKI), delirium, and longer ICU stays compared to the MHCA group.
  • The findings suggest that using MHCA might be protective against certain postoperative issues, potentially improving overall patient recovery outcomes.
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The present manuscript reports on the progress made toward the official announcement of the first World Conference on Cellular Communication and Signaling. This conference is made possible by the Association for research on biosignaling and communication initiative, which was originally launched in 2020 and revitalized during the 12th International Workshop on the Cell Communication Network family of genes in Oslo (June 20-23, 2024). The aim of this conference is to facilitate interactions among the members of societies interested in all aspects of research on Biosignaling and Communication.

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The 12th international workshop on the CCN family of genes took place at the Scandic Holmenkollen Park Hotel in Oslo, Norway from June 20-23, 2024. In 2024, it was the second time, following the Nice meeting in 2022, that the scientific topics were expanded to include additional cellular signaling and communication pathways of interest to the CCN Society members, as suggested by Bernard Perbal in 2019. The 12th international CCN workshop, organized by Håvard Attramadal and Vivi T.

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Allogeneic Hematopoietic Stem Cell Transplantation in Refractory Multiple Myeloma-A Retrospective Multicenter Analysis.

Eur J Haematol

November 2024

Department I of Internal Medicine, Medical Faculty and University Hospital of Cologne, University of Cologne, Köln, Germany.

A growing list of therapies available for patients with multiple myeloma (MM) results in deep response rates, but eventually almost all patients relapse. Allogeneic hematopoietic cell transplantation (allo-SCT) is a familiar approach for MM, but responses are often short and side effects burdensome. Simultaneously, allo-SCT provides a unique platform on which novel immune therapies can be employed to improve clinical outcomes.

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