2,633 results match your criteria: "Universitaetsklinikum Regensburg | UKR[Affiliation]"

: This study aimed to evaluate the diagnostic value of pre-existing computed tomography (CT) examinations for the detection of dental pathologies compared with clinical dental examination in patients with end-stage heart failure. : For this purpose, 59 patients with end-stage heart failure and pre-existing non-dental CT images of the craniofacial region were included. Virtual orthopantomograms (vOPG) were reconstructed.

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  • The significance of prehospital cervical spine immobilization in trauma patients is debated, especially due to potential negative effects like increased intracranial pressure, necessitating further research on the long-term use of rigid orthoses.
  • A study was conducted comparing cervical spine mobility when using a vacuum mattress with and without a rigid orthosis during simulated emergency transport in an ambulance.
  • Results showed statistically significant differences in biomechanical parameters, indicating that the use of a rigid orthosis may impact cervical spine movement during transport, but further investigation is needed to draw firm conclusions.
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Aluminum is a prevalent element in nature, but bioavailable forms of aluminum are toxic to plants, animals, and humans. The present study is dedicated to the development of an ecologically friendly, fast, simple, reliable, sensitive, and accurate improved procedure for the determination of subtrace concentrations of bioavailable forms of aluminum in natural waters. The procedure includes the separation and pre-concentration of bioavailable forms of aluminum using vortex-assisted liquid-liquid microextraction (VALLME) of ionic associates with salicylaldehyde 4-picolinhydrazone (SAPH) and sodium dodecyl sulfate (DDSNa) by isoamylacetate (200 μl) and direct electrothermal atomic absorption spectroscopy (ET AAS).

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Background: Collaborations are an essential element of scientific activity and particularly important in fields such as pediatric anesthesiology, where the evidence base in general is relatively limited. A recent scientometric analysis revealed a geographic diversification of publication activity in pediatric anesthesiology within the last two decades, accompanied by a surge in international collaborations.

Objectives: Given the hypothesis of a similar growth in the activity and dynamics of publications in pediatric anesthesiology, the objective of this scientometric study was to analyze the publication activity and collaboration habits in research in pediatric anesthesiology from Germany, Austria and Switzerland (D-A-CH).

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Heart failure (HF) can present acutely or progress over time. It can lead to morbidity and mortality affecting 6.5 million Americans over the age of 20.

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Objective: Owing to the ageing population the implantation rate of total knee arthroplasty (TKA) continues to rise. Aseptic revisions in primary TKA are one of the main causes of revision. The aim of the following study was to determine the incidence of and reasons for aseptic revision in constrained and unconstrained TKA and in unicondylar knee arthroplasty (UKA).

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Minimally-invasive tracheostomy (MIT): A care bundle for safety improvement in high-risk critically ill patients.

J Clin Anesth

December 2024

Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology, and Infectious diseases, University Hospital Regensburg, Regensburg, Germany. Electronic address:

Background: Detailed reports are scarce on minimally-invasive tracheostomy (MIT) techniques for critically ill patients with challenging anatomy or complex coagulopathies. In such high-risk patients, conventional percutaneous dilatational tracheostomy (PDT) may lead to severe complications.

Methods: Aiming to broaden the scope of MIT for patients previously excluded due to high risks, we developed a new care bundle (MIT technique), specifically designed for intensive care specialists.

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Secondary solid malignancies in long-term survivors after total body irradiation.

Radiat Oncol

September 2024

Department of Radiation Oncology, University Hospital Regensburg, Franz-Josef-Strauß Allee 11, Regensburg, Germany.

Background: Total body irradiation (TBI)-based allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a curative treatment for selected patients with acute myeloid leukemia (AML). Yet, secondary malignancies contribute to long-term morbidity and mortality with TBI potentially influencing these risks.

Methods: This retrospective study analyzed the cumulative incidences of secondary solid malignancies and precancerous lesions of 89 consecutive AML patients after TBI-based conditioning before 1st allo-HSCT between 2000 and 2016.

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Diurnal timing of physical activity and risk of colorectal cancer in the UK Biobank.

BMC Med

September 2024

Department of Epidemiology and Preventive Medicine, University of Regensburg, Franz-Josef-Strauß-Allee 11, Regensburg, 93053, Germany.

Background: Physical activity reduces colorectal cancer risk, yet the diurnal timing of physical activity in colorectal cancer etiology remains unclear.

Methods: This study used 24-h accelerometry time series from UK Biobank participants aged 42 to 79 years to derive circadian physical activity patterns using functional principal component analysis. Multivariable Cox proportional hazard models were used to examine associations with colorectal cancer risk.

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Gene editing in common cardiovascular diseases.

Pharmacol Ther

November 2024

Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany. Electronic address:

Cardiovascular diseases are the leading cause of morbidity and mortality worldwide, highlighting the high socioeconomic impact. Current treatment strategies like compound-based drugs or surgeries are often limited. On the one hand, systemic administration of substances is frequently associated with adverse side effects; on the other hand, they typically provide only short-time effects requiring daily intake.

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Aim: Periprosthetic joint infection (PJI) is one of the main causes of revision surgeries after total knee arthroplasty (TKA) and unicondylar knee replacement. Patient- and hospital-related risk factors must be evaluated to prevent PJI. This study identifies influencing factors and differences in infection rates between various types of implant.

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The COVID-19 pandemic led to the discontinuation of soccer activities at all levels of play. Injuries to the anterior cruciate ligament (ACL) are still one of the most severe injuries in soccer. The aim of this investigation was to analyze the changes in the incidence and mechanism of ACL injuries in professional and amateur soccer before and after the lockdown period.

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Intercellular nanotube-mediated mitochondrial transfer enhances T cell metabolic fitness and antitumor efficacy.

Cell

November 2024

Division of Functional Immune Cell Modulation, Leibniz Institute for Immunotherapy, Regensburg, Germany; Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA; University of Regensburg, Regensburg, Germany; Center for Immunomedicine in Transplantation and Oncology, University Hospital Regensburg, Regensburg, Germany. Electronic address:

Mitochondrial loss and dysfunction drive T cell exhaustion, representing major barriers to successful T cell-based immunotherapies. Here, we describe an innovative platform to supply exogenous mitochondria to T cells, overcoming these limitations. We found that bone marrow stromal cells establish nanotubular connections with T cells and leverage these intercellular highways to transplant stromal cell mitochondria into CD8 T cells.

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Background And Aims: Deep learning algorithms gained attention for detection (computer-aided detection [CADe]) of biliary tract cancer in digital single-operator cholangioscopy (dSOC). We developed a multimodal convolutional neural network (CNN) for detection (CADe), characterization and discriminating (computer-aided diagnosis [CADx]) between malignant, inflammatory, and normal biliary tissue in raw dSOC videos. In addition, clinical metadata were included in the CNN algorithm to overcome limitations of image-only models.

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Purpose: The implantation rate of total knee arthroplasties (TKA) is continuously growing. Aseptic problems are a major cause of revision. The aim of the following study was to determinate the incidence of aseptic revisions in primary knee arthroplasty as well as aseptic revision rates and influencing factors according to the patients' age and type of procedure.

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Background: Accurately measuring energy expenditure during physical activity outside of the laboratory is challenging, especially on a large scale. Thigh-worn accelerometers have gained popularity due to the possibility to accurately detect physical activity types. The use of machine learning techniques for activity classification and energy expenditure prediction may improve accuracy over current methods.

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Article Synopsis
  • - H3 K27M-altered diffuse midline gliomas (DMGs) are aggressive brain tumors that mostly have a specific mutation in the histone H3 gene and can be categorized into subgroups based on various traits like mutation types and tumor locations.
  • - Researchers analyzed 149 DMGs, looking into their DNA methylation patterns and found two main subtypes: DMG-A and DMG-B, which differ in mutation profiles, tumor locations, patient age, and overall survival rates.
  • - DMG-A, primarily affecting adults and often located in the medulla, showed better survival rates compared to DMG-B, which is more common in children and associated with poorer outcomes; subtype classification based on methylation patterns
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Two complexes {[GdCu(GlyHA)(HO)Cr(CO)]·11.02HO} (1) and {{[GdCu(GlyHA)(HO)]μ-[Cu(CO)(HO)]}μ-[Cu(CO)]·15.8HO} (2), were obtained as outcomes of the reactions between the cationic hexanuclear {GdCu(GlyHA)} 15-metallacrown-5 complex (where GlyHA = glycinehydroxamate) and the anionic oxalate complexes K[Cr(CO)] or K[Cu(CO)].

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Article Synopsis
  • Allogeneic hematopoietic stem cell transplantation (alloSCT) is a key treatment for blood disorders, but chronic graft-versus-host disease (cGvHD) can cause severe skin ulcers that traditional therapies often can't heal.
  • * A study analyzed three patients with difficult-to-treat ulcers from cGvHD who were treated with human amniotic membrane (hAM) transplantation, which has healing properties.
  • * Results showed that hAM led to complete healing in two patients, reduced pain and infections, and decreased the need for frequent dressing changes, presenting it as an effective option when standard treatments fail.
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[Optimizing resources in dermatology-to be continued].

Dermatologie (Heidelb)

September 2024

Arbeitsgemeinschaft Nachhaltigkeit in der Dermatologie (e. V.), Guntramstr. 8, 79106, Freiburg, Deutschland.

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An efficient green approach for the trapping of generated -and -quinone methide intermediates by imidazoles and pyrazoles has been developed. A wide range of quinone methide precursors based on simple phenols are compatible with the experimental protocol under mild thermal conditions. This methodology was demonstrated to be suitable for the synthesis of methylene-linked benzopyrone-azole hybrids using naturally occurring coumarin and chromone Mannich bases.

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Background: Lowering LDL-cholesterol is a fundamental goal for both primary and secondary prevention of atherosclerotic cardiovascular diseases. Our study aims to analyse potential sex disparities regarding the tolerability and effectiveness of lipid-lowering therapy in patients with and without reported statin intolerance who are being treated at a lipid-outpatient clinic.

Methods: From 2017 to 2022, n = 1062 patients (n = 612 men, n = 450 women) at high-risk were referred to our lipid-outpatient clinic because of difficulties in lipid control by primary healthcare providers.

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Upper tract urothelial carcinoma (UTUC) is a cancer that is often already in an advanced stage at the time of initial diagnosis. Although urothelial carcinoma of the upper and lower urinary tracts both originate from the urothelium and have similar genetic alterations, there are significant differences in their distribution. In localized high-risk UTUC, radical nephroureterectomy is the gold standard therapy.

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Cold-induced phosphatidylethanolamine synthesis in liver and brown adipose tissue of mice.

Biochim Biophys Acta Mol Cell Biol Lipids

January 2025

ZIEL Institute for Food & Health, Research Group Lipid Metabolism, Technical University of Munich, Gregor-Mendel-Str. 2, 85354 Freising, Germany; Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany. Electronic address:

Increasing energy expenditure in brown adipose (BAT) tissue by cold-induced lipolysis is discussed as a potential strategy to counteract imbalanced lipid homeostasis caused through unhealthy lifestyle and cardiometabolic disease. Yet, it is largely unclear how liberated fatty acids (FA) are metabolized. We investigated the liver and BAT lipidome of mice housed for 1 week at thermoneutrality, 23 °C and 4 °C using quantitative mass spectrometry-based lipidomics.

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Combination anti-PD-1 and anti-CTLA-4 therapy generates waves of clonal responses that include progenitor-exhausted CD8 T cells.

Cancer Cell

September 2024

Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Tara Miller Melanoma Center, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA 19104, USA; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology and Immune Health, Philadelphia, PA 19104, USA; Parker Institute for Cancer Immunotherapy, Philadelphia, PA 19104, USA; Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA. Electronic address:

Combination checkpoint blockade with anti-PD-1 and anti-CTLA-4 antibodies has shown promising efficacy in melanoma. However, the underlying mechanism in humans remains unclear. Here, we perform paired single-cell RNA and T cell receptor (TCR) sequencing across time in 36 patients with stage IV melanoma treated with anti-PD-1, anti-CTLA-4, or combination therapy.

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