Abstracts tagged "neutrophils"

Abstract Number: 1603 • ACR Convergence 2023
Infection-Associated Antiphospholipid Antibodies and Their Potential Role in Sepsis Outcomes
Katarina Kmetova, Emily Chong, NaveenKumar K. Somanathapura, Sherwin Navaz, Lyndsay Kluge, Srilakshmi Yalavarthi, Jason Knight, Michael Maile and Yu Zuo, University of Michigan, Ann Arbor, MI
Background/Purpose: Antiphospholipid syndrome (APS) is an acquired autoimmune thrombophilia characterized by circulating antiphospholipid antibodies (aPL). While the association between aPL and infection has long been…
Abstract Number: 079 • 2023 Pediatric Rheumatology Symposium
Dynamics of Neutrophil Activation in Repeated TLR-9-Induced Mouse Model of Macrophage Activation Syndrome
Natsumi Inoue, Richard Chhaing, Sanjeev Dhakal, Thuy Do and Grant Schulert, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
Background/Purpose: Macrophage activation syndrome (MAS) is a life-threatening complication of rheumatic diseases including systemic juvenile idiopathic arthritis (SJIA). SJIA shows prominent neutrophil activation with expansion…
Abstract Number: 130 • 2023 Pediatric Rheumatology Symposium
Levels of Neutrophil Extracellular Traps Correlate with Disease Activity in Pediatric Lupus
Lydia Thomas¹, Jenna Battaglia², Bharati Matta³, Kim Simpfendorfer⁴, Joyce Hui-Yuen⁵ and Betsy Barnes³, ¹Cohen Children's Medical Center, Northwell Health, New Hyde Park, NY, ²Northwell Health, New York, NY, ³Center for Autoimmune, Musculoskeletal, and Hematopoietic Diseases Research, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, ⁴Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, ⁵Cohen Children's Medical Center, Northwell Health, Lake Success, New York; Center for Autoimmune, Musculoskeletal, and Hematopoietic Diseases Research, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY
Background/Purpose: Pediatric lupus (pSLE) is a multisystemic autoimmune disease characterized by autoantibody production leading to organ damage. Neutrophil extracellular traps (NETs) are considered a potential…
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…
Abstract Number: 0611 • ACR Convergence 2022
Proteomics Reveals Dysregulated Molecular Mechanisms of Cell Death in Neutrophils in Rheumatoid Arthritis
Jennifer Amsler¹, Constance Beaudouin², Morgane LeGall³, Géraldine Falgarone⁴, François Rannou⁵, Léa Tourneur³ and Véronique Witko-Sarsat³, ¹Institute Cochin, Schoenenwerd, Switzerland, ²Hôpital Privé de Provence, Aix-en-Provence, France, ³Institute Cochin, Paris, France, ⁴Hôpital Avicenne, Paris, France, ⁵Hôpital Cochin, Paris, France
Background/Purpose: Favoring apoptosis of neutrophils infiltrating the joints of patients suffering from rheumatoid arthritis (RA) and perpetuating inflammation has recently been discussed as an alternative…
Abstract Number: 1694 • ACR Convergence 2022
Skin Exposure to UV Light Triggers Podocyte and Distal Tubular Injury, in the Presence of CD177+ Neutrophil Cell Cluster
Angelique Cortez¹, Lindsay Mendyka¹, Fred Kolling² and Sladjana Skopelja-Gardner¹, ¹Dartmouth Hitchcock Medical Center, Lebanon, NH, ²Geisel School of Medicine at Dartmouth, Lebanon, NH
Background/Purpose: Sensitivity to ultraviolet (UV) light affects ~ 80% of systemic lupus erythematosus (SLE) patients. UV light exposure of lupus skin leads to local and…

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