Abstracts tagged "Neutrophil Extracellular Traps"

Abstract Number: 1827 • 2019 ACR/ARP Annual Meeting
Clinical Implications of Neutrophil Extracellular Traps in Systemic Lupus Erythematosus
Stanley Moore ¹, Hsin-Hsuan Juo ¹, Christoffer Nielsen ², Helena Tyden ³, Anders Bengtsson ³ and Christian Lood¹, ¹University of Washington, Seattle, ²Statens Serum Institut, Copenhagen, Denmark, ³Lund University, Lund, Sweden
Background/Purpose: Neutrophil activation, including formation of neutrophil extracellular traps (NETs), is essential in host defense. However, NET formation has also been linked to inflammation and…
Abstract Number: 2789 • 2019 ACR/ARP Annual Meeting
Neutrophil Extracellular Traps Induce Tissue-Invasive Macrophages in Granulomatosis with Polyangiitis Dominated by Ear, Nose and Throat Manifestations
Mitsuhiro Akiyama¹, Nour Ibrahim ², Markus Zeisbrich ¹, Peter Hwang ¹, Jorg Goronzy ¹ and Cornelia Weyand ¹, ¹Stanford University, Stanford, CA, ²Stanford University, Stanford University
Background/Purpose: Granulomatosis with polyangiitis (GPA) is a small vessel vasculitis characterized by acute and chronic tissue destruction in the nose, sinuses, lungs and kidneys. In…
Abstract Number: 2790 • 2019 ACR/ARP Annual Meeting
Platelet Mediates Neutrophil Extracellular Traps Formation via TLR Signaling in ANCA-associated Vasculitis
Kotaro Matsumoto¹, Hidekata Yasuoka ², Katsuya Suzuki ¹ and Tsutomu Takeuchi ¹, ¹Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan, ²Division of Rheumatology, Department of Internal Medicine, Fujita Health University School of Medicine, Shinjuku-ku, Aichi, Japan
Background/Purpose: Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is an autoimmune disease that affects small- to medium-sized blood vessels and causes vascular inflammation and multiple organ…
Abstract Number: 2811 • 2019 ACR/ARP Annual Meeting
The IRE1α Pathway Mediates Neutrophil Stress and NETosis in Lupus
Gautam Sule¹, Basel Abuaita ¹, Paul Steffes ¹, Kristen Gilley ¹, Andrew Fernandes ¹, Mary O’Riordan ¹ and Jason Knight ², ¹University of Michigan, Ann Arbor, MI, ²Division of Rheumatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI
Background/Purpose: Immune complex (IC)-activated neutrophils appear to amplify inflammation in lupus through the release of neutrophil extracellular traps (NETosis). There is presently no consensus as…
Abstract Number: 31 • 2019 ACR/ARP Annual Meeting
Regulation of Neutrophil Extracellular Traps by Apremilast (phosphodiesterase 4 Inhibition)
Shane van Breda¹, Simona Rossi ¹ and Paul Hasler ², ¹University Hospital Basel, Department of Biomedicine, Basel, Switzerland, ²Kantonsspital Aarau, Department of Rheumatology, Aarau, Switzerland
Background/Purpose: Increased propensity for neutrophil extracellular trap generation has been described in autoimmune diseases such as rheumatoid arthritis. Neutrophil extracellular traps are thought to contribute…
Abstract Number: 489 • 2019 ACR/ARP Annual Meeting
S100A11 (calgizzarin) Is Released During Neutrophil Extracellular Traps (NETs) Formation in Rheumatoid Arthritis (RA)
Adéla Navrátilová¹, Jiří Baloun ², Hana Hulejová ², Karel Pavelka ³, Jiří Vencovský ³, Ladislav Senolt ³ and Lucie Andrés Cerezo ¹, ¹Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ²Institute of Rheumatology, Prague, Czech Republic, ³Institute of Rheumatology, Department of Rheumatology, 1st Faculty of Medicine, Prague, Czech Republic, Prague 2, Czech Republic
Background/Purpose: S100A11 protein, a member of S100 family, has been associated with several autoimmune inflammatory conditions such as rheumatoid arthritis (RA). Moreover, its pro-inflammatory effect…
Abstract Number: 1226 • 2019 ACR/ARP Annual Meeting
Neutrophil Activation Identifies Patients with Active Polyarticular Gout – a Role for Neutrophil Biomarkers in Monitoring Gout Disease Activity and Severity
Daisy Vedder ¹, Martijn Gerritsen ¹, Mike Nurmohamed ², Ronald van Vollenhoven ³ and Christian Lood⁴, ¹Amsterdam Rheumatology & immunology Center / Reade, Amsterdam, Netherlands, ²Amsterdam Rheumatology and immunology Center location Reade and Amsterdam UMC location VU medical center, Amsterdam, Netherlands, ³Amsterdam Rheumatology and Immunology Center ARC, Amsterdam, the Netherlands, Amsterdam, Netherlands, ⁴University of Washington, Seattle, WA
Background/Purpose: Neutrophils are key immune cells participating in host defense through several mechanisms, including the formation of neutrophil extracellular traps (NETs). Excessive neutrophil activation has…
Abstract Number: 1227 • 2019 ACR/ARP Annual Meeting
A Neutrophil Signature Is Strongly Associated with Cardiovascular Risk in Gout
Daisy Vedder ¹, Martijn Gerritsen ¹, Mike Nurmohamed ², Ronald van Vollenhoven ³ and Christian Lood⁴, ¹Amsterdam Rheumatology & immunology Center / Reade, Amsterdam, Netherlands, ²Amsterdam Rheumatology and immunology Center location Reade and Amsterdam UMC location VU medical center, Amsterdam, Netherlands, ³Amsterdam Rheumatology and Immunology Center ARC, Amsterdam, the Netherlands, Amsterdam, Netherlands, ⁴University of Washington, Seattle, WA
Background/Purpose: Patients with gout have an increased cardiovascular morbidity and mortality, not fully explained by traditional cardiovascular risk factors. Xanthine oxidase-induced oxidative stress, increased lipid…
Abstract Number: 11 • 2018 ACR/ARHP Annual Meeting
PAD4-Independent Interaction of ACPA with Nuclear Antigens in Apoptotic Cells and Neutrophil Extracellular Traps (NETs) Defines a Subset of Autoantibodies
Gustaf Wigerblad¹, Katy A. Lloyd¹, Peter Sahlström², Karine Chemin², Johanna Steen², Philip J. Titcombe^2,3, Diana Zhou², Ragnhild Stålesen¹, Bianka Marklein⁴, Elena Ossipova², Johan Rönnelid⁵, Luca Piccoli⁶, Antonio Lanzavecchia⁶, Daniel L. Mueller³, Karl Skriner⁴, Lars Klareskog², Fredrik Wermeling¹, Vivianne Malmström² and Caroline Grönwall⁷, ¹Rheumatology Unit, Dept of Medicine, Karolinska Institutet, Stockholm, Sweden, ²Rheumatology Unit, Dept. of Medicine, Karolinska Institutet, Stockholm, Sweden, ³The Center for Immunology, Dept. of Medicine, University of Minnesota Medical School, Minneapolis, MN, ⁴Dept. of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany, ⁵Dept. of Immunology Genetics and Pathology, Uppsala University, Uppsala, Sweden, ⁶Università della Svizzera italiana, Institute for Research in Biomedicine, Bellinzona, Switzerland, ⁷Dep. of Medicine, Rheumatology Unit, Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Rheumatoid arthritis (RA) associated anti-citrullinated protein autoantibodies (ACPA) bind a wide range of citrullinated proteins with high cross-reactivity. Recent findings suggest that certain, but…
Abstract Number: 77 • 2018 ACR/ARHP Annual Meeting
Single Nucleotide Polymorphism in the Gene Encoding Peptidylarginine Deiminase 4 Correlates with Reduced Neutrophil Extracellular Traps and Anti-Histone Antibodies in Rheumatoid Arthritis
Aisha M. Mergaert¹, Mandar Bawadekar², Thai Q. Nguyen¹, Steven J. Schrodi^3,4 and Miriam A. Shelef^2,5, ¹University of Wisconsin - Madison, Madison, WI, ²Department of Medicine, Division of Rheumatology, University of Wisconsin - Madison, Madison, WI, ³Center for Precision Medicine Research, Marshfield Clinic Research Institute, Marshfield, WI, ⁴Computation and Informatics in Biology and Medicine, University of Wisconsin - Madison, Madison, WI, ⁵William S. Middleton Memorial Veterans Hospital, Madison, WI
Background/Purpose: In neutrophils, peptidylarginine deiminase 4 (PAD4) citrullinates histones allowing chromatin unraveling and neutrophil extracellular trap (NET) formation. NETs are increased and display proteins targeted…
Abstract Number: 106 • 2018 ACR/ARHP Annual Meeting
Highly Elevated Levels of Anti-Mitochondrial Antibodies in Systemic Lupus Erythematosus and Rheumatoid Arthritis
Richard Moore¹ and Christian Lood², ¹Division of Rheumatology, University of Washington, Seattle, WA, ²Department of Medicine, Division of Rheumatology, University of Washington, Seattle, WA
Background/Purpose: We recently described the phenomenon in systemic lupus erythematosus (SLE) in which mitochondria are extruded into the extracellular space during formation of neutrophil extracellular…
Abstract Number: 975 • 2018 ACR/ARHP Annual Meeting
Alteration of Vascular Inflammatory Markers in SLE By Anifrolumab in the Phase IIb Muse Study
KA Casey¹, WI White¹, Nickie L. Seto², Martin Playford³, MA Smith¹, P Carlucci², B Yu⁴, L Wang⁵, G Illei⁴, Nehal Mehta³ and Mariana J. Kaplan², ¹MedImmune, Gaithersburg, MD, ²NIAMS, Bethesda, MD, ³NHLBI, Bethesda, MD, ⁴MedImmune, Gaithersberg, MD, ⁵AstraZeneca, Gaithersburg, MD
Background/Purpose: Cardiovascular disease is a leading cause of death for patients with systemic lupus erythematosus (SLE), and the disease is widely known to feature premature…
Abstract Number: 1002 • 2018 ACR/ARHP Annual Meeting
Pkcα Deficiency Protected Mice from UVB Induced-Skin Inflammation through Attenuation of Neutrophil Netosis
Yubin Li^1,2, Jeffrey B. Travers^3,4, Victoria P. Werth^5,6 and Ming-Lin Liu^1,2, ¹Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, ²Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, ³Departments of Pharmacology & Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH, ⁴Departments of Dermatology, Boonshoft School of Medicine, Wright State University, Dayton, OH, ⁵Philadelphia Veterans Affairs Medical Center, Philadelphia, PA, ⁶University of Pennsylvania, Philadelphia, PA
Background/Purpose: Neutrophil NETosis is a form of cell death characterized by nuclear envelope rupture, nuclear chromatin release, and neutrophil extracellular trap formation. NETosis is important…
Abstract Number: 1004 • 2018 ACR/ARHP Annual Meeting
Reevaluating Citrullination and Peptidylarginine Deiminases in Neutrophil Extracellular Trap-like Structures
Caitlyn L. Holmes¹, Daeun Shim², John Kernien¹, Chad J. Johnson¹, Jeniel E. Nett³ and Miriam A. Shelef^4,5, ¹University of Wisconsin - Madison, Madison, WI, ²Medicine, University of Wisconsin - Madison, Madison, WI, ³Medicine and Medical Microbiology and Immunology, University of Wisconsin - Madison, Madison, WI, ⁴Department of Medicine, Division of Rheumatology, University of Wisconsin - Madison, Madison, WI, ⁵William S. Middleton Memorial Veterans Hospital, Madison, WI
Background/Purpose: Neutrophil extracellular traps (NETs) are webs of chromatin and proteins extruded from neutrophils during NETosis. NETs are increased and display citrullinated proteins that are…
Abstract Number: 1085 • 2018 ACR/ARHP Annual Meeting
Natural Gingerols Inhibit Neutrophil Extracellular Trap Release Elicited By Lupus Autoantibodies
Ramadan A. Ali¹ and Jason S. Knight², ¹University of Michigan, Ann Arbor, MI, ²., University of Michigan, Ann Arbor, MI
Background/Purpose: Recent studies have revealed a role for neutrophils in the pathogenesis of lupus and antiphospholipid syndrome (APS). Indeed, neutrophils are activated by various disease-relevant…

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