1,106 results match your criteria: "Regensburg University.[Affiliation]"

Background: Glioblastoma is a rapidly proliferating tumor. Patients bear an inferior prognosis with a median survival time of 14-16 months. Proliferation and repopulation are a major resistance promoting factor for conventionally fractionated radiotherapy.

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Content variability was previously suggested to promote stronger learning effects in cognitive training whereas less variability incurred transfer costs (Sabah et al. Psychological Research, https://doi.org/10.

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Actinic keratoses (AKs) are common lesions in light-skinned individuals that can potentially progress to cutaneous squamous cell carcinoma (cSCC). Both conditions may be associated with significant morbidity and constitute a major disease burden, especially among the elderly. To establish an evidence-based framework for clinical decision making, the guidelines for actinic keratosis and cutaneous squamous cell carcinoma were developed using the highest level of methodology (S3) according to regulations issued by the Association of Scientific Medical Societies in Germany (AWMF).

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The effects of soft tissue lateral release on the stability of the ligament complex of the knee.

Arch Orthop Trauma Surg

July 2020

Department of Orthopaedic Surgery, Regensburg University Medical Centre, Asklepios Klinikum Bad Abbach, Kaiser-Karl-V-Allee 3, 93077, Bad Abbach, Germany.

Purpose: Valgus deformity presents a particular challenge in total knee arthroplasty. This condition regularly leads to contractures of the lateral capsular ligament complex and to overstretching of the medial ligamentous complex. Reconstruction of the knee joint kinematics and anatomy often requires lateral release.

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Small eye movements cannot be reliably measured by video-based P-CR eye-trackers.

Behav Res Methods

October 2020

Department of Computer Science and Informatics, University of the Free State, Bloemfontein, South Africa.

For evaluating whether an eye-tracker is suitable for measuring microsaccades, Poletti & Rucci (2016) propose that a measure called 'resolution' could be better than the more established root-mean-square of the sample-to-sample distances (RMS-S2S). Many open questions exist around the resolution measure, however. Resolution needs to be calculated using data from an artificial eye that can be turned in very small steps.

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Social interactions can strengthen memories, but they can also contaminate them, for instance, when individuals integrate misinformation from social sources into their own memories. In two experiments, we examined such social contagion in a novel recognition-based collaboration task. Groups of three subjects studied lists of words in isolation, but unbeknownst to subjects, only half of these words were shared by the whole group.

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Optically tracked and 3D printed haptic phantom hand for surgical training system.

Quant Imaging Med Surg

February 2020

Regensburg Medical Image Computing (ReMIC), Ostbayerische Technische Hochschule Regensburg (OTH Regensburg), Regensburg, Germany.

Background: For surgical fixation of bone fractures of the human hand, so-called Kirschner-wires (K-wires) are drilled through bone fragments. Due to the minimally invasive drilling procedures without a view of risk structures like vessels and nerves, a thorough training of young surgeons is necessary. For the development of a virtual reality (VR) based training system, a three-dimensional (3D) printed phantom hand is required.

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Category labels can influence the effects of selective retrieval on nonretrieved items.

Mem Cognit

April 2020

Department of Experimental Psychology, Regensburg University, 93040, Regensburg, Germany.

Using lists of unrelated items as study material, recent studies have shown that selective retrieval of some studied items can impair or improve recall of the nonretrieved items, depending on whether the lag between study and selective retrieval is short or long. This study examined whether the results generalize when the items are studied together with their category labels (e.g.

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Compounds that modulate AMPK activity and hepatic steatosis impact the biosynthesis of microRNAs required to maintain lipid homeostasis in hepatocytes.

EBioMedicine

March 2020

Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; CIBER de la Fisiología de la Obesidad y la Nutrición (CIBEROBN), Madrid, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain. Electronic address:

Background: While the impact of metformin in hepatocytes leads to fatty acid (FA) oxidation and decreased lipogenesis, hepatic microRNAs (miRNAs) have been associated with fat overload and impaired metabolism, contributing to the pathogenesis of non-alcoholic fatty liver disease (NAFLD).

Methods: We investigated the expression of hundreds of miRNAs in primary hepatocytes challenged by compounds modulating steatosis, palmitic acid and compound C (as inducers), and metformin (as an inhibitor). Then, additional hepatocyte and rodent models were evaluated, together with transient mimic miRNAs transfection, lipid droplet staining, thin-layer chromatography, quantitative lipidomes, and mitochondrial activity, while human samples outlined the translational significance of this work.

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Actinic keratoses (AK) are common lesions in light-skinned individuals that can potentially progress to cutaneous squamous cell carcinoma (cSCC). Both conditions may be associated with significant morbidity and constitute a major disease burden, especially among the elderly. To establish an evidence-based framework for clinical decision making, the guideline "actinic keratosis and cutaneous squamous cell carcinoma" was developed using the highest level of methodology (S3) according to regulations issued by the Association of Scientific Medical Societies in Germany (AWMF).

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In vitro chondrogenically differentiated mesenchymal stem cells (MSCs) have a tendency to undergo hypertrophy, mirroring the fate of transient "chondrocytes" in the growth plate. As hypertrophy would result in ossification, this fact limits their use in cartilage tissue engineering applications. During limb development, retinoic acid receptor (RAR) signaling exerts an important influence on cell fate of mesenchymal progenitors.

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The acute-phase protein pentraxin-3 (PTX3) is a component of the innate immune system. Inflammation and tissue injury increased PTX3 in the injured liver, and accordingly, circulating PTX3 was induced in patients with chronic liver diseases. In the present study, PTX3 protein was determined in systemic, hepatic, and portal vein plasma of patients with liver cirrhosis to assess a possible association between hepatic PTX3 release and extent of liver injury.

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Role of lipids in pathophysiology, diagnosis and therapy of hepatocellular carcinoma.

Biochim Biophys Acta Mol Cell Biol Lipids

May 2020

Institute for Clinical Chemistry and Laboratory Medicine, Regensburg University Hospital, Regensburg, Germany.

Hepatocellular carcinoma (HCC) is an aggressive and widespread cancer. Patients with liver cirrhosis of different aetiologies are at a risk to develop HCC. It is important to know that in approximately 20% of cases primary liver tumors arise in a non-cirrhotic liver.

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Initial treatment (ventilator settings, rescue therapy, supportive measures), and prevention of critical events improve survival in ARDS patients, but little data exists on its effect on health-related quality of life (HRQOL) and return to work (RtW) in survivors. We analyzed the association of the intensity of treatment at ARDS onset and the incidence of critical events on HRQOL and RtW a year after ICU discharge. In a prospective multi-centre cohort study, the intensity of treatment and the incidence of critical events were determined at 61 ICUs in Germany.

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Background: This planning study compares different radiotherapy techniques for patients with pituitary adenoma, including flatness filter free mode (FFF), concerning plan quality and secondary malignancies for potentially young patients. The flatness filter has been described as main source of photon scatter.

Material And Methods: Eleven patients with pituitary adenoma were included.

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Editorial of Special Issue "Adipokines 2.0".

Int J Mol Sci

January 2020

Department of Internal Medicine I, Regensburg University Hospital, 93053 Regensburg, Germany.

This editorial aims to summarize the 19 scientific papers that contributed to the Special Issue "Adipokines 2" [...

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Humoral immune responses initiate in the lymph node draining the site of viral infection (dLN). Some viruses subvert LN B cell activation; however, our knowledge of viral hindrance of B cell responses of important human pathogens is lacking. Here, we define mechanisms whereby chikungunya virus (CHIKV), a mosquito-transmitted RNA virus that causes outbreaks of acute and chronic arthritis in humans, hinders dLN antiviral B cell responses.

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Background: In 2018-19, Borna disease virus 1 (BoDV-1), the causative agent of Borna disease in horses, sheep, and other domestic mammals, was reported in five human patients with severe to fatal encephalitis in Germany. However, information on case frequencies, clinical courses, and detailed epidemiological analyses are still lacking. We report the occurrence of BoDV-1-associated encephalitis in cases submitted to the Institute of Clinical Microbiology and Hygiene, Regensburg University Hospital, Regensburg, Germany, and provide a detailed description of newly identified cases of BoDV-1-induced encephalitis.

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Precursors for Nonlymphoid-Tissue Treg Cells Reside in Secondary Lymphoid Organs and Are Programmed by the Transcription Factor BATF.

Immunity

February 2020

Regensburg Center for Interventional Immunology (RCI), Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; Chair for Immunology, Regensburg University, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany; Immune Tolerance Group, Tumor Immunology Program, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany. Electronic address:

Specialized regulatory T (Treg) cells accumulate and perform homeostatic and regenerative functions in nonlymphoid tissues. Whether common precursors for nonlymphoid-tissue Treg cells exist and how they differentiate remain elusive. Using transcription factor nuclear factor, interleukin 3 regulated (Nfil3) reporter mice and single-cell RNA-sequencing (scRNA-seq), we identified two precursor stages of interleukin 33 (IL-33) receptor ST2-expressing nonlymphoid tissue Treg cells, which resided in the spleen and lymph nodes.

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Generation and characterization of a mitotane-resistant adrenocortical cell line.

Endocr Connect

February 2020

Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Nephrology and Medical Intensive Care, BCRT - Berlin Institute of Health Center for Regenerative Therapies, Berlin, Germany.

Mitotane is the only drug approved for the therapy of adrenocortical carcinoma (ACC). Its clinical use is limited by the occurrence of relapse during therapy. To investigate the underlying mechanisms in vitro, we here generated mitotane-resistant cell lines.

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The tumor inhibitory potential of the highly active chemerin-156 isoform was described in orthotopic models of hepatocellular carcinoma (HCC). The majority of HCC arises in the fibrotic liver, which was not reproduced in these studies. Here, a potential therapeutic activity of chemerin-156 was evaluated in diethylnitrosamine (DEN)-induced liver cancer, which mimics fibrosis-associated HCC.

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Background/aim: Adiponectin protects from metabolic disease and cancer. Accordingly, serum adiponectin was reduced in patients with colorectal cancer (CRC). This hepatoprotective factor was definitely increased in hepatocellular carcinoma (HCC).

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Hydrocephalus with the need for shunt placement is a common sequela after aneurysmal subarachnoid hemorrhage (aSAH). In 2009 Chan et al. published a formula to predict shunt dependency in SAH patients, the failure risk index (FRI).

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Stressors and strains of next of kin of patients with ARDS in intensive care: A qualitative interview study using a stress-strain approach.

Intensive Crit Care Nurs

April 2020

Medical Sociology, Institute of Epidemiology and Preventive Medicine, University of Regensburg, Dr.-Gessler-Str. 17, 93051 Regensburg, Germany; Institute of Social Medicine and Health Systems Research, Otto von Guericke University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany. Electronic address:

Objectives: This study aims to explore and analyse the stressors and strains of next of kin of acute respiratory distress syndrome (ARDS) patients during their stay in the intensive care unit utilising the stressors and strain approach as a theoretical framework.

Methods: Data collection was performed as semi-standardised qualitative interviews. 35 families of patients with ARDS were approached when visiting the intensive care unit.

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