Abstracts tagged "neutrophils"

Abstract Number: 1321 • ACR Convergence 2022
Systemic Inflammatory-based Scores and Bone Turnover Ratio as Novel Diagnostic Tools for Chronic Nonbacterial Osteomyelitis (CNO) of the Sternocostoclavicular Region in Adults
Anne Leerling, Juliette Faber, Natasha Appelman-Dijkstra, Olaf Dekkers and Elizabeth Winter, Leiden University Medical Center, Leiden, Zuid-Holland, Netherlands
Background/Purpose: Chronic non-bacterial osteomyelitis (CNO) in adults exhibits as sterile osteitis and consequent disrupted bone metabolism favoring bone formation of the sternocostoclavicular region (SCCH). Diagnosis…
Abstract Number: 0053 • ACR Convergence 2022
Natural Microbial Exposure Increases Susceptibility of C57BL/6 Mice to Collagen-induced Arthritis
Sahar Lotfi-Emran¹ and David Masopust², ¹University of Minnesota, Minneapolis, MN, ²University of Minnesota, Department of Microbiology and Immunology, Minneapolis, MN
Background/Purpose: Mice exposed to natural microbes (NME) develop an appropriately mature immune system, one that resembles that of a non-neonatal human.1,2 Collagen induced arthritis is…
Abstract Number: 1434 • ACR Convergence 2022
Retrospective Analysis of Tocilizumab-induced Neutropenia in Patients with Rheumatoid Arthritis
YoungEun Kim¹, Soo Min Ahn¹, Ji Seon Oh², Yong Gil Kim¹, Chang Keun Lee¹, Bin Yoo¹ and Seokchan Hong¹, ¹Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea, Seoul, Republic of Korea, ²Department of Information Medicine, Big Data Research Center, Asan Medical Center, Seoul, Republic of Korea
Background/Purpose: Neutropenia has been reported as one of the most frequent adverse events of tocilizumab. We conducted a retrospective cohort study to determine the risks…
Abstract Number: 0151 • ACR Convergence 2022
Novel Innate Immunity Predictors of Infections in Idiopathic Inflammatory Myopathies Patients: A Cohort Study
Diana Gómez-Martín¹, jiram torres-Ruiz¹, victor Hugo Tovar-Méndez², Fabiola Cassiano-Quezada³, Daniel Alberto Carrillo-Vázquez⁴, Alfredo Pérez-Fragoso⁴, Nancy Mejía-Rodríguez⁵ and guillermo Juárez-Vega⁵, ¹INCMNSZ, Ciudad de México, Mexico, ²Instituto Nacional de Ciencias Medicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico, ³Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico, ⁴Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico, ⁵Red de Apoyo a la Investigación. UNAM, Ciudad de México, Mexico
Background/Purpose: Risk factors associated with the development of infections in patients with idiopathic inflammatory myopathies (IIM) have not been fully addressed, particularly those related to…
Abstract Number: 1476 • ACR Convergence 2022
Anti-Neutrophil Extracellular Traps (NET) Antibodies and Their Association with Disease Activity and Clinical Phenotypes in Systemic Lupus Erythematosus
Rosa Arvizu-Rivera¹, jiram torres-Ruiz², Alfredo Pérez-Fragoso², Beatriz Alcalá-Carmona³, Miroslava Nuñez-Aguirre⁴, Ana Sofía Vargas-Castro⁴, Abdiel Absalón-Aguilar³, Jaquelin Lira-Luna⁴ and Diana Gómez-Martín², ¹Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Ciudad de México, Mexico, ²INCMNSZ, Ciudad de México, Mexico, ³Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico, ⁴Instituto Nacional de Ciencias Medicas y Nutricion "Salvador Zubiran", Ciudad de México, Mexico
Background/Purpose: Enhanced netosis has been acknowledged as pathogenic in Systemic Lupus Erythematosus (SLE). The presence of antibodies against neutrophil extracellular traps (anti-NETs) in patients with…
Abstract Number: 0491 • ACR Convergence 2022
Markers of Neutrophil Activation in Patients with ANCA-associated Vasculitis and Large-vessel Vasculitis
Despina Michailidou¹, Bhargavi Duvvuri¹, Runa Kuley¹, David Cuthbertson², Peter Grayson³, Nader Khalidi⁴, Curry Koening⁵, Carol Langford⁶, Carol McAlear⁷, Larry Moreland⁸, Christian Pagnoux⁹, Philip Seo¹⁰, Ulrich Specks¹¹, Antoine Sreih⁷, Kenneth J. Warrington¹¹, Tomas Mustelin¹, Paul Monach¹², Peter Merkel¹³ and Christian Lood¹, ¹Division of Rheumatology, University of Washington, Seattle, WA, ²University of South Florida, Tampa, FL, ³National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, ⁴Division of Rheumatology, Mc Master University, Ontario, Canada, Ontario, Canada, ⁵Division of Rheumatology, University of Utah, Salt Lake City, UT, USA, Salt Lake City, UT, ⁶Cleveland Clinic, Cleveland, OH, ⁷Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, USA, Philadelphia, PA, ⁸University of Colorado, Denver, CO, ⁹Division of Rheumatology, Mount Sinai Hospital, Toronto, ON, Canada, ¹⁰Johns Hopkins University, Baltimore, MD, ¹¹Mayo Clinic, Rochester, MN, ¹²VA Boston Healthcare System, Boston, MA, ¹³University of Pennsylvania, Philadelphia, PA
Background/Purpose: Neutrophils contribute to the pathogenesis of many autoimmune diseases. The purpose of the study was to assess two markers of neutrophil activation, calprotectin and…
Abstract Number: 1545 • ACR Convergence 2022
Increased Neutrophil Activation in Patients with Polymyalgia Rheumatica
Despina Michailidou¹, Linda Johansson², Runa Kuley¹, TING WANG¹, Payton Hermanson¹, Solbritt Rantapää-Dahlqvist² and Christian Lood¹, ¹Division of Rheumatology, University of Washington, Seattle, WA, ²Department of Public Health and Clinical Medicine, Rheumatology, Umeå University, Umeå, Sweden
Background/Purpose: Neutrophils are important in host defense. However, neutrophil activation has also been involved in the immunopathogenesis of several autoimmune diseases due to their many…
Abstract Number: 0537 • ACR Convergence 2022
Neutrophil Extracellular Traps as a Biomarker to Predict Outcomes in Lupus Nephritis
Laura Patricia Whittall Garcia¹, Farnoosh Naderinavi¹, Zahi Touma², Dafna Gladman³, Murray Urowitz⁴, Anna Konvalinka¹ and Joan Wither⁵, ¹University Health Network, Toronto, ON, Canada, ²Schroeder Arthritis Institute, Krembil Research Institute, University Health Network and University of Toronto, Toronto, ON, Canada, ³Toronto Western Hospital, Schroeder Arthritis Institute, Toronto, ON, Canada, ⁴University of Toronto, University Health Network, Schroeder Arthritis Institute, Toronto, ON, Canada, ⁵Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, University of Toronto, Toronto, ON, Canada
Background/Purpose: Neutrophil Extracellular Traps (NETs) have been implicated in Lupus Nephritis (LN) pathogenesis. SLE neutrophils release High Mobility Group Box-1 (HMGB1) protein, in turn, HMGB1…
Abstract Number: 1684 • ACR Convergence 2022
A Potent Inhibitor of PAD4 Suppresses Histone Citrullination in Vitro and in Vivo
Gundula Min-Oo, Victor Lira, Debbie Ruelas, Upasana Mehra, Graham Pimm, Taylor Won, Jean-Philippe Belzile, Kelly Wang, Claire Ellis, Blake Bleier, Paqui Gonzalez Traves, Nikolai Novikov, Adam Schrier and Anita Niedziela-Majka, Gilead Sciences, Foster City, CA
Background/Purpose: Peptidyl arginine deaminase 4 (PAD4) catalyzes the conversion of arginine residues to citrulline, a post-translational modification that has been implicated in the auto-immune response…
Abstract Number: 0567 • ACR Convergence 2022
Gain-of-Function Mutations in Lyn Kinase Cause a Novel Autoinflammatory Disease with Small Vessel Vasculitis and Liver Fibrosis
Adriana Almeida de Jesus¹, Guibin Chen², Dan Yang², Tomas Brdicka³, Natasha Ruth⁴, David Bennin⁵, Dita Cebecauerova⁶, Hana Malcova⁷, Helen Freeman⁸, Neil Martin⁹, Karel Svojgr⁶, Murray Passo⁴, Farzana Bhuyan¹⁰, Sara Alehashemi¹¹, Andre Rastegar¹², Kat Uss¹², Lela Kardova¹², Iris Duric³, Ebun Omoyinmi¹³, Petra Peldova⁶, Chyi-Chia Richard Lee¹⁴, David Kleiner¹⁴, Colleen Hadigan¹⁵, Stephen Hewitt¹⁴, Stefania Pittaluga¹⁴, Carmelo Carmona-Rivera¹⁶, Katherine R. Calvo¹⁵, Nirali Shah¹⁴, Miroslava Balascakova⁶, Danielle Fink¹⁷, Radana Kotalova⁶, Zuzana Parackova⁶, Lucie Peterkova⁶, Daniela Kuzilkova⁶, Vit Campr⁶, Lucie Sramkova⁶, Stephen Brooks¹⁶, Eric Meffre¹⁸, Rebecca Harper², Hyesun Kuehn¹⁵, Mariana Kaplan¹⁶, Paul Brogan¹⁹, Sergio Rosenzweig¹⁵, Zuoming Deng¹⁶, Anna Huttenlocher⁵, Susan Moir¹², Douglas Kuhns¹⁷, Manfred Boehm², Karolina Skvarova Kramarzova²⁰ and Raphaela Goldbach-Mansky²¹, ¹NIAID, NIH, Silver Spring, MD, ²National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, ³Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Academy of Sciences of Czech Republic (ASCR), Prague, Czech Republic, ⁴Medical University of South Carolina, Charleston, SC, ⁵Departments of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, ⁶Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic, ⁷Second Faculty of Medicine, Charles University/University Hospital Motol, Praha, Czech Republic, ⁸Raigmore Hospital, Inverness, Scotland, United Kingdom, ⁹Royal Hospital for Children, Glasgow, Scotland, United Kingdom, ¹⁰National Institutes of Health, Bethesda, MD, ¹¹NIH/NIAID/TADS, Clarksville, MD, ¹²National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, ¹³Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom, ¹⁴National Cancer Institute, National Institutes of Health, Bethesda, MD, ¹⁵Clinical Center, National Institutes of Health, Bethesda, MD, ¹⁶National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, ¹⁷National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD, ¹⁸Yale University, New Haven, CT, ¹⁹UCL Institute of Child Health and Great Ormond Street Hospital NHS Foundation Trust, London, United Kingdom, ²⁰Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, ²¹NIH/NIAID, Potomac, MD
Background/Purpose: Lyn kinase is a member of the Src family of tyrosine kinases that regulates innate and adaptive immune responses. Lyn C-terminal tail tyrosine residue,…
Abstract Number: 1687 • ACR Convergence 2022
A Core Inflammation Program Conserved Across Human and Murine Neutrophils
Nicolaj hackert¹, Felix Radtke¹, Tarik Exner¹, Carsten Müller-Tidow¹, Hanns-Martin Lorenz¹, Peter Nigrovic², Guido Wabnitz¹ and Ricardo Grieshaber-Bouyer¹, ¹Heidelberg University Hospital, Heidelberg, Germany, ²Boston Children's Hospital, Boston, MA
Background/Purpose: Neutrophils mediate a range of homeostatic and inflammatory processes and display substantial phenotypic and functional heterogeneity. While animal models enable important mechanistic discoveries, differences…
Abstract Number: 0593 • ACR Convergence 2022
A New Cytokine Interleukin 40 Is Elevated in the Serum of Patients with Early Rheumatoid Arthritis and Associates with Autoantibodies and Neutrophil Activation
Adéla Navrátilová¹, Viktor Bečvář¹, Hana Hulejová¹, Michal Tomcik², Heřman Mann², Olga Růžičková¹, Olga Šléglová³, Jakub Závada¹, Karel Pavelka⁴, Jiří Vencovský⁵, Ladislav Šenolt⁵ and Lucie Andrés Cerezo¹, ¹Institute of Rheumatology, Prague, Czech Republic, ²Institute of Rheumatology, Department of Rheumatology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic, Prague, Czech Republic, ³Institute of Rheumatology, Prague, ⁴Institute of Rheumatology, Department of Rheumatology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic, Praha, Czech Republic, ⁵Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic
Background/Purpose: IL-40 is a newly described cytokine related to malignant transformation and immune system function. In our previous study, we showed that IL-40 is elevated…
Abstract Number: 1688 • ACR Convergence 2022
Biomechanical Phenotype of Circulating Neutrophils Is Altered in ANCA Associated Vasculitis
Noelle Pisacano¹, Stephen P. McAdoo¹, Jochen Guck², Charles D. Pusey¹, Edwin R. Chilvers¹, Andrew S. Cowburn¹, Katharine M. Lodge¹ and Maria F. Prendecki¹, ¹Imperial College London, London, United Kingdom, ²Max Planck Institute, Erlangen, Germany
Background/Purpose: Real Time-Deformability Cytometry (RT-DC) is a novel technique able to identify morpho-rheological characteristics of individual cells such as size, deformability, and elasticity using only…
Abstract Number: 0596 • ACR Convergence 2022
Neutrophil Extracellular Traps (NET) Trigger an Enhanced Pro-inflammatory Response in Macrophage Subpopulations in Rheumatoid Arthritis Patients via the Aryl Hydrocarbon Receptor (AhR) Pathway
Dyhia Melbouci¹, Sarra Seninet¹, Marie-Christophe Boissier², Elodie Segura³ and Patrice Decker¹, ¹University Sorbonne Paris Nord, Inserm UMR 1125, Li2P, Bobigny, France, ²INSERM UMR 1125, Sorbonne Paris Nord University,Rheumatology Dpt, APHP, GHUPSSD, Avicenne Hosp, Bobigny, France, ³U932 Inserm, Curie Institute, Paris, France
Background/Purpose: Activated neutrophils (PMN) form neutrophil extracellular traps (NET), fibers of DNA and associated proteins expelled in the extracellular space. Increased NET formation has been…
Abstract Number: 1689 • ACR Convergence 2022
Oral Ginger Supplementation Counteracts NETosis in Autoimmune Mouse Models and in Healthy Humans
Ramadan Ali¹, Miela Zahavi², Christine Rysenga¹, Cyrus Sarosh³, Claire Hoy¹, Kristen Demoruelle⁴ and Jason S Knight⁵, ¹University of Michigan, Ann Arbor, MI, ²Universtiy of Michigan, Ann Arbor, MI, ³University of Michigan, Temperance, MI, ⁴University of Colorado Anschutz Medical Campus, Aurora, CO, ⁵University of Michigan, Division of Rheumatology, Ann Arbor, MI
Background/Purpose: It has previously been reported that 6-gingerol, the most abundant phytochemical in ginger root, inhibits neutrophil phosphodiesterase activity and thereby counteracts neutrophil hyperactivity in…

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