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  1. No Access

    Chapter and Conference Paper

    Evaluation of Betulinic Acid Derivatives as PET Tracers for Hypoxia-Induced Carbonic Anhydrase IX (CA IX) Expression

    Non-invasive visualisation of the expression of hypoxia-related proteins, such as carbonic anhydrase IX (CA IX), by positron emission tomography (PET) could provide important information on the oxygenation sta...

    V. Haupt, D. Gündel, E. Prell, M. Kahnt, S. Sommerwerk in Oxygen Transport to Tissue XLIII (2022)

  2. No Access

    Chapter and Conference Paper

    Acidosis-Induced Regulation of Egr1 and Ccn1 In Vitro and in Experimental Tumours In Vivo

    Extracellular acidosis is a characteristic of solid tumours, resulting from hypoxia-induced glycolytic metabolism as well as from the “Warburg effect” (aerobic glycolysis). The acidic environment has shown to ...

    M. Rauschner, S. Reime, A. Riemann, O. Thews in Oxygen Transport to Tissue XLIII (2022)

  3. No Access

    Chapter and Conference Paper

    Role of the mTOR Signalling Pathway During Extracellular Acidosis in Tumour Cells

    The metabolic microenvironment of solid tumours is often dominated by extracellular acidosis which results from glycolytic metabolism. Acidosis can modulate gene expression and foster the malignant progression...

    M. Wolff, M. Rauschner, S. Reime, A. Riemann, O. Thews in Oxygen Transport to Tissue XLIII (2022)

  4. No Access

    Chapter

    Impact of Acidosis-Regulated MicroRNAs on the Expression of Their Target Genes in Experimental Tumors In Vivo

    In comparison to normal tissue, solid tumors show an acidic extracellular pH, which results from hypoxia-induced glycolytic metabolism and the Warburg effect. Since acidosis modulates the expression of differe...

    Mandy Rauschner, A. Riemann, S. Reime, O. Thews in Oxygen Transport to Tissue XLII (2021)

  5. No Access

    Chapter

    Extracellular Acidosis Regulates the Expression of Inflammatory Mediators in Rat Epithelial Cells

    Acidification of the cellular microenvironment is found in different pathological states such as inflammation, ischemia and in solid tumors. It can affect cell function and phenotype, and by this aggravate the...

    A. Riemann, S. Reime, M. Gießelmann, O. Thews in Oxygen Transport to Tissue XLI (2020)

  6. No Access

    Chapter

    Expression of MicroRNAs in Fibroblasts and Macrophages Is Regulated by Hypoxia-Induced Extracellular Acidosis

    Under pathological conditions like inflammation, ischemia or in solid tumors, parameters of the microenvironment like local oxygenation and extracellular pH show marked changes when compared to healthy tissue....

    A. Riemann, S. Reime, P. Wollny, C. Sangerhausen, M. Gekle in Oxygen Transport to Tissue XL (2018)

  7. No Access

    Chapter

    Hypoxia-Related Tumor Acidosis Affects MicroRNA Expression Pattern in Prostate and Breast Tumor Cells

    MicroRNAs (miRNAs) are small non-coding RNA sequences which are able to modulate the expression of many functional proteins. The expression level of miRNAs can be modulated by parameters of the tumor microenvi...

    A. Riemann, S. Reime, O. Thews in Oxygen Transport to Tissue XXXIX (2017)

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    Chapter and Conference Paper

    Acidosis Promotes Metastasis Formation by Enhancing Tumor Cell Motility

    The tumor microenvironment is characterized by hypoxia, acidosis as well as other metabolic and biochemical alterations. Its role in cancer progression is increasingly appreciated especially on invasive capaci...

    A. Riemann, B. Schneider, D. Gündel, C. Stock in Oxygen Transport to Tissue XXXVII (2016)

  9. No Access

    Chapter and Conference Paper

    Impact of the Tumor Microenvironment on the Expression of Inflammatory Mediators in Cancer Cells

    Hypoxia and extracellular acidosis are common features of solid malignant tumors. The aim of the study was to analyze whether these pathophysiological parameters affect the expression of inflammatory mediators...

    A. Riemann, A. Ihling, S. Reime, M. Gekle, O. Thews in Oxygen Transport to Tissue XXXVIII (2016)

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    Article

    Supramolecular gratings for tuneable confinement of electrons on metal surfaces

    The engineering of electron wave functions in reduced dimensions has allowed researchers to explore and visualize fundamental aspects of quantum mechanics1,2 and has also led to new ideas for advanced materials a...

    Y. Pennec, W. Auwärter, A. Schiffrin, A. Weber-Bargioni in Nature Nanotechnology (2007)

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    Article

    Nanoscopic phase-analysis of SiC containing BaTiO3-ceramic

    The formation of fresnoite (Ba2TiSi2O8) from BaTi1.01O3.02 by addition of SiC was investigated in the temperature range from 700 to 1350 °C. Solid state reactions at the interface of grains indicate a formation ...

    J. Neumann-Zdralek, F. Koschel, A. Röder in Fresenius' Journal of Analytical Chemistry (1998)