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Abstracts tagged "hypoxia"

  • Abstract Number: 2690 • ACR Convergence 2024

    ANCA IgG Promotion of Neutrophil Recruitment, Migration and Vascular Damage in ANCA Associated Vasculitis May Be Enhanced by Hypoxia

    Noelle Pisacano, Amrita Dhutia, Stephen Rothery, Charles Pusey, Edwin Chilvers, Andrew Cowburn, Katharine Lodge and Maria Prendecki, Imperial College London, London, United Kingdom

    Background/Purpose: Neutrophils are main mediators of disease in ANCA associated vasculitis (AAV). Pathogenic ANCA IgG on neutrophils promotes neutrophil adhesion and migration at the endothelium.…
  • Abstract Number: 0887 • ACR Convergence 2023

    Dapagliflozin Modulates Inflammation and Germinal Centers in Lupus by Increasing Regulatory T Cells

    Javier Rangel-Moreno1, Maria de la Luz Garcia-Hernandez2, Mary O'Connell3, Daria Krenitsky4, Maria Fernanda Ossa-Echeverri1, Mark Lusco5, John Looney6 and Jennifer Anolik3, 1University of Rochester, Rochester, NY, 2University of Rochester, West Henrietta, NY, 3University of Rochester Medical Center, Rochester, NY, 4Division of Allergy, Immunology and Rheumatology/University of Rochester Medical Center, Rochester, NY, 5Department of Pathology and Laboratory Medicine/University of Rochester, Rochester, NY, 6Division of Allergy, Immunology and Rheumtology, Rochester, NY

    Background/Purpose: Nephritis is one of the most severe manifestations of lupus, affecting 40-70% of patients. Though immune-targeted therapies have improved, a significant number of patients…
  • Abstract Number: 1661 • ACR Convergence 2022

    Osteoclastogenesis and Vascular Endothelial Growth Factor Blood Levels in Patients with Systemic Sclerosis with and Without Calcinosis Cutis

    Antonia Valenzuela1, Guillermo Perez2, Carolina Iturriaga2 and Rebeca Montalva2, 1Pontificia Universidad Catolica de Chile, Santiago, Chile, 2Pontificia Universidad Catolica de Chile, Santiago de Chile, Chile

    Background/Purpose: Calcinosis cutis is a debilitating complication of systemic sclerosis (SSc) with no effective treatments. Although the pathogenesis of SSc-related calcinosis remains unknown, there is…
  • Abstract Number: 0066 • ACR Convergence 2020

    AMP Deaminase 2 Is Expressed on the Surface of Human Immune Cells as a Novel Regulator of Extracellular Adenosine Metabolism

    Lisa Ehlers1, Aditi Kuppe1, Marieluise Kirchner2, Alexandra Damerau1, Cindy Strehl1, Frank Buttgereit3 and Timo Gaber1, 1Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Berlin, Germany, 2Max Delbrück Center for Molecular Medicine, BIH Core Facility Proteomics, Berlin, Germany, 3Charité University Medicine, Berlin, Germany

    Background/Purpose: Adenosine and its nucleotides represent crucial immunomodulators in the extracellular environment. ATP and ADP are released from stressed cells in states of inflammation, whereas…
  • Abstract Number: 0116 • ACR Convergence 2020

    The in Vitro 3D Fracture Gap Model: A Tool for Preclinical Testing

    Moritz Pfeiffenberger1, Alexandra Damerau1, Paula Hoff2, Annemarie Lang1, Frank Buttgereit3 and Timo Gaber1, 1Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Berlin, Germany, 2Endokrinologikum Berlin, Rheumatologie, Berlin, Germany, 3Charité University Medicine, Berlin, Germany

    Background/Purpose: Approximately 10% of fractures lead to significant fracture healing disorders. Of note, especially immunosuppressed patients with ongoing inflammation show difficulties in the correct course…
  • Abstract Number: 0991 • ACR Convergence 2020

    Pathogenic, Glycolytic PD-1+ B Cells Accumulate in the Hypoxic RA Joint

    Achilleas Floudas1, Nuno Neto2, Viviana Marzaioli3, Kieran Murray4, Barry Moran5, Michael Monaghan6, Candice Low7, Ronan Mullan8, Navin Rao9, Vinod Krishna9, Sunil Nagpal10, Douglas Veale11 and Ursula Fearon3, 1Molecular Rheumatology Trinity Biomedical Sciences Institute, Dublin, Dublin, Ireland, 2Department of Mechanical and Manufacturing Engineering, Dublin, Dublin, Ireland, 3Molecular Rheumatology, Trinity College Dublin, Dublin, Dublin, Ireland, 4Saint Vincent's University Hospital, Dublin 4, Dublin, Ireland, 5Trinity Biomedical Sciences Institute, Dublin, Ireland, 6Department of Mechanical and Manufacturing Engineering, Dublin, Ireland, 7EULAR Centre for Arthritis and Rheumatic diseases, St Vincents University Hospital, UCD, Dublin, Ireland, 8Adelaide and Meath Hospital, Dublin, Dublin, Ireland, 9Janssen R&D, Spring House, PA, 10Janssen Research & Development, Collegeville, PA, 11EULAR Centre for Arthritis and Rheumatic Diseases, St Vincents University Hospital, UCD, Dublin, Dublin, Ireland

    Background/Purpose: Rheumatoid arthritis (RA) often has a progressive and debilitating course, with significant impact on the patient’s quality of life. Despite the long-known association with…
  • Abstract Number: 1801 • ACR Convergence 2020

    An Engineered Extracellular Matrix‐rich Decellularized Substrate Based Podocytes Culture System to Study Intracellular Complement Production and Activation

    Abhigyan Satyam1, Maria Tsokos2 and George Tsokos2, 1Division of Rheumatology & Clinical Immunology/Beth Israel Deaconess Medical Center/Harvard Medical School, boston, 2Division of Rheumatology & Clinical Immunology/Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, MA

    Background/Purpose: Current technologies do not support long-term cell viability, differentiation and maintenance of podocytes. We developed a biophysical approach, termed macromolecular crowding (MMC), to create…
  • Abstract Number: 2862 • ACR/ARP Annual Meeting 2019

    Hypoxia Resistant Pathogenic B Cells Accumulate in the RA Synovial Tissue in a CXCR3 Dependent Manner

    Achilleas Floudas1, Candice Low 2, Monika Biniecka 3, Kieran Murray 2, Ronan Mullan 4, Douglas Veale 5 and Ursula Fearon 6, 1Trinity Biomedical Sciences Institu, DUBLIN, Ireland, 2Saint Vincent's University Hospital, Dublin, Ireland, 3Molecular Rheumatology, Trinity Biomedical Sciences Institute, DUBLIN, Ireland, 4Dept of Rheumatology, Tallaght University Hospital, TCD, Dublin, Ireland, 5EULAR Centre For Arthritis And Rheumatic Diseases and The Conway Institute, Dublin, Ireland, 6Molecular Rheumatology, Trinity Biomedical Sciences Institute, TCD, Dublin, Ireland

    Background/Purpose: Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease of unknown and complex aetiology with severe detrimental effects for the patient’s quality of life.…
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