Abstracts tagged "complement"

Abstract Number: 0873 • ACR Convergence 2021
Clinical and Serological Characteristics of Latin American Patients with Lupus Enteritis: A Case-Control Study
Marcela Muñoz-Urbano¹, Julian Sanchez-Bautista², Yeison Santamaria-Alza¹, Diana C. Quintero-González³, Andres Ramirez², Adriana Lucía Vanegas-García⁴, Gloria M. Vasquez¹ and Luis Alonso Gonzalez³, ¹Rheumatology section, Universidad de Antioquia, Medellín, Colombia, ²Department of internal medicine, Universidad de Antioquia, Medellín, Colombia, ³Division of rheumatology, Universidad de Antioquia, Medellín, Colombia, ⁴Division of rheumatology, Universidad de Antioquia – Hospital San Vicente Fundación, Medellín, Colombia
Background/Purpose: Lupus enteritis (LE) is a potentially life-threatening manifestation of systemic lupus erythematosus (SLE), with an incidence ranging from 8% to 27%. Timely diagnosis is…
Abstract Number: 0955 • ACR Convergence 2021
The Effect of Treatment with the Complement C5a Receptor Inhibitor Avacopan on Health-Related Quality of Life in ANCA-Associated Vasculitis
Vibeke Strand¹, Pirow Bekker², Huibin Yue², David R.W. Jayne³ and Peter Merkel⁴, ¹Stanford University School of Medicine, Portola Valley, CA, ²ChemoCentryx, San Carlos, CA, ³University of Cambridge, Cambridge, United Kingdom, ⁴University of Pennsylvania, Philadelphia, PA
Background/Purpose: Avacopan, an oral C5a receptor inhibitor, was evaluated in ANCA-associated vasculitis (AAV). Efficacy and safety results were reported previously. Health-related quality of life (HRQoL)…
Abstract Number: 1086 • ACR Convergence 2021
Lack of Effect of SARS-CoV-2 Vaccination on Cell Bound Complement Activation Products (CB-CAPs), Multianalyte Assay Panel (MAP) with Algorithm, and Inflammatory Biomarkers
Mark Rudolph, Anja Kammensheidt and Roberta Alexander, Exagen Inc., Vista, CA
Background/Purpose: SARS-CoV-2 infection can lead to severe inflammation including increased complement activation (Ma, Kulkarni 2021) and the production of several proinflammatory cytokines. The rapid deployment…
Abstract Number: 1370 • ACR Convergence 2021
Complement Factor D and Factor H Represent Disease and Severity Biomarkers for Systemic Sclerosis Associated Pulmonary Arterial Hypertension (SSc-PAH)
Roberta G Marangoni¹, Changyong Feng¹, Ashley Frazer-Abel², Stephen Tomlinson³, Amy Wielgosz¹, Katie Lutz⁴, Michael Pauciulo⁴, William Nichols⁴, V. Michael Holers⁵, Christopher Ritchlin⁶, R James White III¹ and Benjamin Korman¹, ¹University of Rochester, Rochester, NY, ²University of Colorado Denver, Colorado, CO, ³Medical University of South Carolina, Charleston, SC, ⁴Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ⁵University of Colorado, Denver, CO, ⁶Division of Allergy, Immunology, and Rheumatology, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, NY
Background/Purpose: Pulmonary arterial hypertension (PAH) is a severe vascular complication of systemic sclerosis (SSc) and a major cause of mortality. Despite significant advances in the…
Abstract Number: 1371 • ACR Convergence 2021
Symptom Management in Systemic Sclerosis: A Pilot Study of a Web-based Intervention Using Peer-Health Coaches
Susan Murphy¹, Yen Chen², Mary Alore², Sheri Hicks² and Dinesh Khanna², ¹University of Michigan, Grosse Ile, MI, ²University of Michigan, Ann Arbor, MI
Background/Purpose: People with systemic sclerosis (SSc) have a high burden of chronic symptoms that have dramatic effects on function and quality of life. Fatigue, along…
Abstract Number: 1493 • ACR Convergence 2021
Association of the Soluble Terminal Complement Complex C5b-9 (sC5b-9) with Urinary Signs of Kidney Disease in a Swiss SLE Cohort
Kristin Schmiedeberg¹, Ruediger B. Mueller², Thomas Neumann³, Ian Pirker¹, Philipp Rein⁴, Camillo Ribi⁵, Andrea Rubbert-Roth⁶, Michael Kirschfink⁷, Jutta Schroeder-Braunstein⁷, Reinhard Voll⁸ and Johannes von Kempis¹, ¹Kantonsspital St. Gallen, St.Gallen, Switzerland, ²Clinic of Rheumatology, Medical University Hospital Aarau, Aarau, Switzerland, ³Kantonsspital St.Gallen, St.Gallen, Switzerland, ⁴Landeskrankenhaus Hohenems, Wolfurt, Austria, ⁵CHUV, Lausanne, Switzerland, ⁶Kantonspital St Gallen, St.Gallen, Switzerland, ⁷Universitätsklinikum Heidelberg, Heidelberg, Germany, ⁸Department of Rheumatology and Clinical Immunology, University Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
Background/Purpose: Few reliable laboratory biomarkers exist to determine disease activity in SLE. The role of the soluble terminal complement complex, sC5b-9, in active SLE has…
Abstract Number: 1504 • ACR Convergence 2021
Association Between Anti-RNP Antibodies and Interferon Gene Expression but Not Complement Consumption in SLE
Erika Hubbard¹, David Pisetsky² and Peter Lipsky¹, ¹AMPEL BioSolutions, Charlottesville, VA, ²Duke University Medical Center, Durham, NC
Background/Purpose: Anti-nuclear antibodies are important serologic features of SLE and facilitate diagnosis. Anti-double stranded DNA (dsDNA) antibodies are routinely monitored for disease prognosis and are…
Abstract Number: 1808 • ACR Convergence 2020
Erythrocyte Complement Receptor 1 (ECR1) and Erythrocyte Bound C4d (EC4d) Associate with Adverse Pregnancy Outcomes and Preeclampsia in Pregnant Women with Systemic Lupus Erythematosus (SLE)
Jill Buyon¹, John Conklin², Michael Golpanian¹, JoAnne Ligayon³, Thierry Dervieux⁴, Peter Izmirly¹, H. Michael Belmont¹, Jane Salmon⁵ and Roberta Vezza Alexander³, ¹New York University, New York, NY, ²Exagen Inc., Vista, CA, ³Exagen Inc, Vista, CA, ⁴Exagen Inc, San Diego, CA, ⁵Hospital for Special Surgery, New York, NY
Background/Purpose: Despite improvement in management and outcomes of pregnancies complicated by SLE, the risk of adverse events and preeclampsia (PE) continues to exceed that of…
Abstract Number: 1810 • ACR Convergence 2020
Complement Activation in Systemic Lupus Erythematosus Patients with Low Disease Activity Is Not Inhibited by Hydroxychloroquine
Anne Margrethe Troldborg¹, Annette Hansen², Kristian Stengaard-Pedersen² and Steffen Thiel², ¹Aarhus University Hospital, Arhus, Denmark, ²Aarhus University, Aarhus, Denmark
Background/Purpose: Mortality in patients with systemic lupus erythematosus (SLE) is significantly higher than in the general population. Treatment of SLE patients has improved, however, a…
Abstract Number: 1814 • ACR Convergence 2020
The Association of Urinary Membrane Attack Complex (C5b-9) with Proteinuria and Glomerular Activity in Lupus Nephritis
Shudan Wang¹, Erica Moore², Brianna Lally³, Beatrice Goilav⁴, Chaim Putterman³ and Anna Broder⁵, ¹Montefiore Medical Center / Albert Einstein College of Medicine, Bronx, NY, ²Albert Einstein College of Medicine, Bronx, ³Albert Einstein College of Medicine, Bronx, NY, ⁴The Children’s Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, NY, ⁵Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY
Background/Purpose: Complement activation is known to play a major role in lupus nephritis (LN). Urinary membrane attack complex (C5b-9) has been shown to correlate with…
Abstract Number: 0064 • ACR Convergence 2020
Neutrophil Extracellular Traps Are Sufficient to Activate the Alternative Pathway of Complement
Rebecca Schriefer¹, Michelle Elvington², Priyan Weerappuli³ and Alfred Kim⁴, ¹Washington University School of Medicine, Saint Louis, MO, ²Kypha, Inc., Saint Louis, MO, ³University of Michigan, Ann Arbor, MI, ⁴Washington University School of Medicine, St. Louis, MO
Background/Purpose: Systemic lupus erythematosus (SLE) replies on complement activation to drive many of the pathophysiologic features of disease. We and others have noted that SLE…
Abstract Number: 2050 • ACR Convergence 2020
Autoantibodies Targeting Complement Receptors C3aR and C5aR1 Are Decreased in ANCA-associated Vasculitis and Correlate with a Higher Relapse Rate
Sebastian Klapa¹, Antje Müller², Andreas Koch³, Anja Kerstein-Staehle⁴, Wataru Kaehler³, Harald Heidecke⁵, Susanne Schinke⁶, Markus Huber-Lang⁷, Martin Nitschke⁸, Silke Pitann⁹, Christian Karsten¹⁰, Gabriela Riemekasten¹¹ and Peter Lamprecht², ¹University of Lübeck and Institute of Experimental Medicine, Christian-Albrechts-University of Kiel c/o German Naval Medical Institute, Department of Rheumatology and Clinical Immunology, Luebeck, Germany, ²University of Lübeck, Department of Rheumatology and Clinical Immunology, Lübeck, Germany, ³Institute of Experimental Immunology, Christian-Albrechts-University Kiel, c/o German Naval Medical Institute, Kronshagen, Germany, ⁴University of Lübeck, Dept Rheumatology and Clinical Immunology, Luebeck, Germany, ⁵CellTrend GmbH, Luckenwalde, Germany, ⁶University of Lübeck, Department of Rheumatology and Clinical Immunology, Luebeck, Germany, ⁷Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany, ⁸Department of Internal Medicine I, Transplant Center, University of Lübeck, Luebeck, Germany, ⁹University of Lübeck, Department of Rheumatology and Clinical Immunology,, Luebeck, Germany, ¹⁰Institute of Systemic Inflammation Research, University of Lübeck, Luebeck, Germany, ¹¹University of Lübeck, Department of Rheumatology and Clinical Immunology,, Lübeck, Germany
Background/Purpose: Activation of the alternative and common terminal complement pathways has been shown in ANCA-associated vasculitis (AAV). Circulating titers of the anaphylatoxin C5a are increased…
Abstract Number: 0085 • ACR Convergence 2020
Classifications of Inflammatory Myopathies: Differentially Expressed Membrane-Bound Complement Regulators Allow Specific Patterns of Membrane Attack Complex Deposition
Fadi Charouf¹, Netanel Karbian¹, Itamar Altman¹, Yakov Fellig¹ and Dror Mevorach¹, ¹Hadassah-University Hospital, Jerusalem, Yerushalayim, Israel
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are a group of heterogeneous disorders that typically present with proximal muscle weakness. According to the classification criteria, IMs are…
Abstract Number: 0262 • ACR Convergence 2020
SLE Pregnancies: C4 as Predictor of Flares and Adverse Pregnancy Outcomes
Francesca Crisafulli¹, Laura Andreoli¹, Matteo Filippini¹, Micaela Fredi¹, Maria Chiara Gerardi¹, Roberto Gorla², Maria Grazia Lazzaroni¹, Daniele Lini¹, Cecilia Nalli², Marco Taglietti¹, Andrea Lojacono³, Sonia Zatti³, Cristina Zanardini³, Franco Franceschini¹ and Angela Tincani¹, ¹Rheumatology and Clinical Immunology Unit, Spedali Civili and University of Brescia, Brescia, Lombardia, Italy, ²Rheumatology and Clinical Immunology Unit, ASST Spedali Civili of Brescia, Brescia, Lombardia, Italy, ³Obstetrics and Gynecology Unit, Spedali Civili and University of Brescia, Brescia, Lombardia, Italy
Background/Purpose: SLE pregnancies have an increased risk of Adverse Pregnancy Outcomes (APO). In clinical practice, low C3 and C4 levels are associated with active disease…
Abstract Number: 0528 • ACR Convergence 2020
The Complex Relationship Between C4b Binding Protein, Warfarin and Antiphospholipid Antibodies
Giorgia Grosso¹, Kerstin Sandholm², Aleksandra Antovic¹, Iva Gunnarsson¹, Agneta Zickert¹, Anna Vikerfors³, Lennart Truedsson⁴, Maria Bruzelius¹, Bo Nilsson⁵, Kristina Nilsson Ekdahl⁵ and Elisabet Svenungsson¹, ¹Karolinska University Hospital, Stockholm, Sweden, ²Linnaeus Center for Biomaterials Chemistry, Linnaeus University, Kalmar, Sweden, ³Swedish Medical Products Agency, Uppsala, Sweden, ⁴Lunds University, Lund, Sweden, ⁵Uppsala University, Uppsala, Sweden
Background/Purpose: C4b Binding Protein (C4BP) is the main inhibitor of the classical complement pathway. Both β2glycoprotein-I (β2GPI), the main antigen in the antiphospholipid syndrome (APS),…

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