700 results match your criteria: "RWTH University-Hospital Aachen[Affiliation]"

The aim was to analyze small abdominal aortic aneurysm (AAA) morphology during surveillance with regard to standard endovascular aortic repair (EVAR) suitability. This retrospective single-center study included all patients (n = 52, 48 male, 70 ± 8 years) with asymptomatic AAA ≤ 5.4 cm undergoing ≥2 computed tomography angiography(CTA)/magnetic resonance imaging (MRI) studies (interval: ≥6 months) between 2010 and 2018.

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Isolation of Hepatocytes from Liver Tissue by a Novel, Semi-Automated Perfusion Technology.

Biomedicines

September 2022

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

Primary hepatocytes are a major tool in biomedical research. However, obtaining high yields of variable hepatocytes is technically challenging. Most protocols rely on the two-step collagenase perfusion protocol introduced by Per Ottar Seglen in 1976.

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Rat Hepatic Stellate Cell Line CFSC-2G: Genetic Markers and Short Tandem Repeat Profile Useful for Cell Line Authentication.

Cells

September 2022

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

Hepatic stellate cells (HSCs) are also known as lipocytes, fat-storing cells, perisinusoidal cells, or Ito cells. These liver-specific mesenchymal cells represent about 5% to 8% of all liver cells, playing a key role in maintaining the microenvironment of the hepatic sinusoid. Upon chronic liver injury or in primary culture, these cells become activated and transdifferentiate into a contractile phenotype, i.

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This review summarizes recent developments in the prevention and treatment of patients with early-stage breast cancer. The individual disease risk for different molecular subtypes was investigated in a large epidemiological study. With regard to treatment, new data are available from long-term follow-up of the Aphinity study, as well as new data on neoadjuvant therapy with atezolizumab in HER2-positive patients.

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Article Synopsis
  • - Recent advancements in the treatment of advanced HER2-negative hormone receptor-positive breast cancer include new drugs and ongoing research, which have shown improvements in progression-free and overall survival.
  • - This review highlights key findings from recent studies and emphasizes the significance of therapies such as CDK4/6 inhibitors, trastuzumab deruxtecan, sacituzumab govitecan, and capivasertib.
  • - Notably, the Destiny-Breast-04 study reported an overall survival benefit for trastuzumab deruxtecan in patients with low HER2 expression, while the FAKTION study also showed benefits for capivasertib; however, palbociclib did not demonstrate a similar survival advantage in first
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Multiplex short tandem repeat profiling of immortalized hepatic stellate cell line Col-GFP HSC.

PLoS One

September 2022

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

Misidentification, cross-contamination and genetic drift of continuous animal cell lines are persistent problems in biomedical research, leading to erroneous results and inconsistent or invalidated studies. The establishment of immortalized hepatic stellate cell line Col-GFP HSC was reported in PLoS One in the year 2013. In the present study a multi loci short tandem repeat signature for this cell line was established that allows for unique cell line authentication.

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Interleukin-18 signaling promotes activation of hepatic stellate cells in mouse liver fibrosis.

Hepatology

June 2023

Department of Hepatology and Gastroenterology , Charité - Universitätsmedizin Berlin, Campus Virchow Klinikum and Charité Campus Mitte , Berlin , Germany.

Background And Aims: Nucleotide-binding oligomerization domain-like receptor-family pyrin domain-containing 3 (NLRP3) inflammasome activation has been shown to result in liver fibrosis. Mechanisms and downstream signaling remain incompletely understood. Here, we studied the role of IL-18 in hepatic stellate cells (HSCs), and its impact on liver fibrosis.

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Letter to the Editor: LO2, a misidentified cell line: Some data should be interpreted with caution.

Hepatology

April 2023

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

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Special Issue on "Cellular and Molecular Mechanisms Underlying the Pathogenesis of Hepatic Fibrosis II".

Cells

August 2022

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

Hepatic fibrosis is a common type of liver disease that is attracting increasing attention of basic scientists and clinicians worldwide [...

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This narrative review aims to pinpoint mental and behavioral effects of starvation, which may be triggered by hypoleptinemia and as such may be amenable to treatment with leptin receptor agonists. The reduced leptin secretion results from the continuous loss of fat mass, thus initiating a graded triggering of diverse starvation related adaptive functions. In light of leptin receptors located in several peripheral tissues and many brain regions adaptations may extend beyond those of the hypothalamus-pituitary-end organ-axes.

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Evidence relating to the treatment of breast cancer patients with early-stage disease has increased significantly in the past year. Abemaciclib, olaparib, and pembrolizumab are new drugs with good efficacy in the relevant patient groups. However, some questions remain unanswered.

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For patients with advanced breast cancer, several novel therapies have emerged in recent years, including CDK4/6 inhibitors, immune checkpoint inhibitors, PARP inhibitors, alpelisib, tucatinib and trastuzumab-deruxtecan, and sacituzumab-govitecan, which have transformed and expanded the therapeutic landscape for patients with advanced breast cancer. Some of these substances have now been approved for use in the early stages of the disease, or are expected to be approved in the near future, so the therapeutic landscape will change once again. Therefore, current scientific efforts are focused on the introduction of new substances and understanding their mechanisms of progression and efficacy.

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Article Synopsis
  • Multiple sclerosis (MS) is a complex central nervous system disease that involves both degeneration and inflammation, influenced by various mediators including the protein lipocalin 2 (LCN2).
  • In this study, researchers found that a specific type of astrocytes produces LCN2 in MS lesions and investigated its effects using different mouse models of MS that mimic different aspects of the disease.
  • The results suggest that LCN2 may help protect against the loss of oligodendrocytes and limit inflammation in MS, though the exact role and contributions of different brain cells remain unclear.
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Combined Therapy with a CCR2/CCR5 Antagonist and FGF21 Analogue Synergizes in Ameliorating Steatohepatitis and Fibrosis.

Int J Mol Sci

June 2022

Department of Hepatology & Gastroenterology, Charité-Universitätsmedizin Berlin, Campus Virchow-Klinikum (CVK) and Campus Charité Mitte (CCM), 13353 Berlin, Germany.

(1) Background: With new potential drug targets emerging, combination therapies appear attractive to treat non-alcoholic steatohepatitis (NASH) and fibrosis. Chemokine receptor CCR2/5 antagonists can improve fibrosis by reducing monocyte infiltration and altering hepatic macrophage subsets. Fibroblast growth factor 21 (FGF21) may improve NASH by modulating lipid and glucose metabolism.

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Introduction: The open field test (OFT) is a common tool to assess anxiety and behavioural changes in rodents. It has been adapted to pigs with no systematic investigation of how environmental changes may alter the performance of pigs. Currently, the number of published studies including the OFT in domestic pig models is increasing without standardization.

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Background: MicroRNAs (miRNAs) are non-coding, endogenous, single-stranded, small (21-25 nucleotides) RNAs. Various target genes at the post-transcriptional stage are modulated by miRNAs that are involved in the regulation of a variety of biological processes such as embryonic development, differentiation, proliferation, apoptosis, inflammation, and metabolic homeostasis. Abnormal miRNA expression is strongly associated with the pathogenesis of multiple common human diseases including cardiovascular diseases, cancer, hepatitis, and metabolic diseases.

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Genetic Characterization of Rat Hepatic Stellate Cell Line HSC-T6 for In Vitro Cell Line Authentication.

Cells

May 2022

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

Immortalized hepatic stellate cells (HSCs) established from mouse, rat, and humans are valuable in vitro models for the biomedical investigation of liver biology. These cell lines are homogenous, thereby providing consistent and reproducible results. They grow more robustly than primary HSCs and provide an unlimited supply of proteins or nucleic acids for biochemical studies.

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Introduction: Sarcopenia is a muscle disease that involves loss of muscle strength and physical function and is associated with adverse health effects. Even though sarcopenia has attracted increasing attention in the literature, many research findings have not yet been translated into clinical practice. In this article, we aim to validate a deep learning neural network for automated segmentation of L3 CT slices and aim to explore the potential for clinical utilization of such a tool for clinical practice.

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Corrosion Cast and 3D Reconstruction of the Murine Biliary Tree After Biliary Obstruction: Quantitative Assessment and Comparison With 2D Histology.

J Clin Exp Hepatol

December 2021

Department of General, Visceral and Vascular Surgery, Experimental Transplantation Surgery, University Hospital Jena, Drackendorfer Strasse 1, 07747, Jena, Germany.

Background: Obstructive cholestasis can lead to significant alterations of the biliary tree depending on the extent and duration of the biliary occlusion. Current experimental studies reported about advanced techniques for corrosion cast and 3D reconstruction (3D-reco) visualizing delicate microvascular structures in animals. We compared these two different techniques for visualization and quantitative assessment of the obstructed murine biliary tree with classical 2D histology.

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Genetic and Molecular Characterization of the Immortalized Murine Hepatic Stellate Cell Line GRX.

Cells

April 2022

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

The murine cell line GRX has been introduced as an experimental tool to study aspects of hepatic stellate cell biology. It was established from livers of C3H/HeN mice that were infected with cercariae of . Although these cells display a myofibroblast phenotype, they can accumulate intracellular lipids and acquire a fat-storing lipocyte phenotype when treated with retinol, insulin, and indomethacin.

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The virulence factors of the opportunistic human pathogen have been a main subject of research. In contrast, limited information is available on the mechanisms that allow the bacterium to accommodate to the conditions during carriage, a prerequisite for pathogenicity. Here, we tested the hypothesis that the adaptation of at different anatomical sites is reflected by differential gene regulation.

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Current kidney function parameters overestimate kidney tissue repair in reversible experimental kidney disease.

Kidney Int

August 2022

Institute of Pathology, RWTH University Hospital Aachen, Aachen, Germany; Division of Nephrology and Immunology, RWTH University Hospital Aachen, Aachen, Germany; Department of Electron Microscopy, RWTH University Hospital Aachen, Aachen, Germany. Electronic address:

Although underlying mechanisms and the clinical course of kidney disease progression are well described, less is known about potential disease reversibility. Therefore, to analyze kidney recovery, we adapted a commonly used murine chronic kidney disease (CKD) model of 2,8- dihydroxyadenine (2,8-DHA) crystal-induced nephropathy to study disease recovery and efficacy of disease-modifying interventions. The recovery phase after CKD was characterized by improved kidney function after two weeks which remained stable thereafter.

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