Abstracts tagged "neutrophils"

Abstract Number: 0110 • ACR Convergence 2023
Neutrophil Extracellular Traps as Mediators of Antiphospholipid Antibody-Induced Trophoblast Dysfunction and Fetal Loss
Christine Rysenga, Srilakshmi Yalavarthi, Wenying Liang, Claire Hoy, Cyrus Sarosh, Richard Lieberman, Yu Zuo and Jason Knight, University of Michigan, Ann Arbor, MI
Background/Purpose: Antiphospholipid antibodies (aPL) induce obstetric complications associated with placental insufficiency by promoting trophoblast dysfunction and inflammation at the maternal-fetal interface. Neutrophils have been found…
Abstract Number: 1776 • ACR Convergence 2023
Macrophage Migration Inhibitory Factor May Help Maintain Tight Junctions in the Gut by Enhancing Occludin Expression
Shaghayegh Foroozan¹ and Nigil Haroon², ¹University Health Network/University of Toronto, Toronto, ON, Canada, ²University of Toronto, University Health Network, Schroeder Arthritis Institute, Department of Medicine/Rheumatology, Toronto, ON, Canada
Background/Purpose: Axial Spondyloarthritis (AxSpA) is a chronic inflammatory disease with multifactorial origins, primarily affecting the musculoskeletal system. Gut inflammation is seen in the majority of…
Abstract Number: 0112 • ACR Convergence 2023
Molecular Stratification of Antiphospholipid Syndrome Patients Through Integrative Analysis of the Whole-blood RNA Transcriptome
Amala Ambati¹, Feiyang Ma¹, Katarina Kmetova¹, Sherwin Navaz¹, Claire Hoy¹, Cyrus Sarosh¹, Ajay Tambralli¹, Johann E. Gudjonsson¹, J. Michelle Kahlenberg¹, Jacqueline Madison¹, Ali Duarte-Garcia², Jason Knight¹ and Yu Zuo¹, ¹University of Michigan, Ann Arbor, MI, ²Mayo Clinic, Rochester, MN
Background/Purpose: Antiphospholipid syndrome (APS) is an acquired thrombo-inflammatory disease associated with diverse clinical manifestations in the setting of persistent antiphospholipid antibodies (aPL). Early diagnosis and…
Abstract Number: 1781 • ACR Convergence 2023
TNF Induces Neutrophil Elastase/Gasdermin D-mediated Neutrophil Extracellular Traps in Axial Spondyloarthritis
Yehao Li and Xiang Peng, Department of Rheumatology and Immunology, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Qingyuan, China
Background/Purpose: Emerging studies have shown that neutrophil extracellular traps (NETs) are increased and associated with the disease activity in patients with axial spondyloarthritis (axSpA). However,…
Abstract Number: 0113 • ACR Convergence 2023
Serum Myeloperoxidase (MPO)-DNA Complexes and Serum Calprotectin Differentiate Isolated Thrombotic Antiphospholipid Syndrome from Isolated Obstetric Antiphospholipid Syndrome
Ruyu Liang¹, Ranran Yao², Ziye Wang³, Wenwen Pei², Renge Liang³ and Chun Li⁴, ¹Peking University, XiCheng, China, ²Peking University, Beijing, China, ³Peking University People's Hospital, Beijing, China, ⁴Peking University People’s Hospital, Beijing, China
Background/Purpose: There is a lack of serum markers to differentiate thrombotic APS (tAPS) and obstetric APS (oAPS). Neutrophil extracellular traps (NETs) are involved in the…
Abstract Number: 2189 • ACR Convergence 2023
Lymphopenia Fluctuation Patterns Determine the Trajectory of the Disease in Sjogren’s Patients with Hematological Involvement
Giovanni Fulvio¹, Matilde Bandeira², Augusto Silva³, Gaetano La Rocca⁴, Silvia Fonzetti⁵, Francesco Ferro⁶, Marta Mosca⁷, Vasco Romão², Chiara Baldini¹, Manuel Silvério-António⁸ and Nikita Khmelinskii², ¹University of Pisa, Pisa, Italy, ²Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal, ³Santa Maria Hospital, Maceira, Portugal, ⁴University of Pisa, Rheumatology Unit, Pisa, Italy, ⁵AOUP, Pisa, Italy, ⁶Clinical and Experimental Medicine Department, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, ⁷Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy, ⁸Hospital Santa Maria, Lisboa, Portugal
Background/Purpose: Sjogren's disease (SjD) is characterized by a moderate prevalence of cytopenia, mainly neutropenia and lymphocytopenia with a typical fluctuating pattern. The associations between clinical…
Abstract Number: 0259 • ACR Convergence 2023
Preliminary Experience with a Novel “Fix” for Deep Epitope and Transcriptional Phenotyping of Fragile Cells from Autoinflammatory Flares
Hallie Carol¹, Emily Landy² and Scott Canna¹, ¹Children's Hospital of Philadelphia, Philadelphia, PA, ²University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Autoinflammatory diseases (AID) are characterized by inflammation and immunopathology due to primary defects in the innate immune response. Neutrophils (PMN) feature prominently in the…
Abstract Number: 2233 • ACR Convergence 2023
Neutrophil Levels Associate with Early Improvement in Spinal Pain and Week 24 Multi-Domain Disease Control During Guselkumab Treatment in Active Psoriatic Arthritis: Post Hoc Pooled Analyses of Two Phase 3 Randomized Controlled Trials
Thomas Macleod¹, Xenofon Baraliakos², Emmanouil Rampakakis³, Warner Chen⁴, Antonius Pieter J Van Den Heuvel⁴, Loqmane Seridi⁴, May Shawi⁵, Frederic Lavie⁶, Joseph F. Merola⁷, Proton Rahman⁸ and Dennis McGonagle⁹, ¹University of Leeds, Leeds Institute of Rheumatic and Musculoskeletal Medicine, Leeds, United Kingdom, ²Rheumazentrum Ruhrgebiet Herne, Ruhr-University Bochum, Herne, Germany, ³McGill University, Department of Pediatrics / JSS Medical Research, Scientific Affairs, Montreal, QC, Canada, ⁴Translational Sciences, Janssen Research & Development, LLC, Spring House, PA, ⁵Immunology, Janssen Research & Development, LLC, Titusville, NJ, ⁶The Janssen Pharmaceutical Companies of Johnson & Johnson, Paris, France, ⁷Brigham and Women's Hospital and Harvard Medical School, Boston, MA, ⁸Craig Dobbin Research Institute, Memorial University, St. John's, NL, Canada, ⁹Leeds Biomedical Research Centre, University of Leeds, Leeds, United Kingdom
Background/Purpose: Neutrophils have potential pathogenic roles in chronic inflammatory diseases (e.g., neutrophilic cutaneous microabscesses in psoriasis, and neutrophils in the synovial fluid/tissue in PsA and…
Abstract Number: 0864 • ACR Convergence 2023
Proteomic Analysis of Circulating Neutrophils from Osteoarthritis Patients Shows Metabolic Dysregulation That Is Associated with Decreased Physiologic Apoptosis
Jennifer Amsler¹, Morgane Le Gall², Camille Daste³, François Rannou³ and Véronique Witko-Sarsat², ¹Institut Cochin, Bern, Switzerland, ²Institut Cochin, Paris, France, ³Hôpital Cochin, Paris, France
Background/Purpose: Osteoarthritis (OA) has long been thought to be only of local mechanical origin. However, it has been shown recently that there is a phenotype…
Abstract Number: 2358 • ACR Convergence 2023
Neutrophil Extracellular Traps Induce Endothelial-to-Mesenchymal Transition and Associate with Vascular Complications in Scleroderma
Ramadan Ali¹, Wenying Liang¹, Claire Shiple¹, Rosemary Gedert², Suiyuan Huang¹, Cyrus Sarosh¹, Eliza Pei-Suen Tsou¹, Dinesh Khanna¹ and Jason Knight¹, ¹University of Michigan, Ann Arbor, MI, ²University of Michigan, Onsted, MI
Background/Purpose: Systemic sclerosis (SSc, also known as scleroderma) is a disease characterized by fibrosis, autoimmunity, and vasculopathy. Many devastating complications such as digital ulcerations, scleroderma…
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: 0690 • ACR Convergence 2022
The Physiological Ketone Body Beta-Hydroxybutyrate Potently Neutralizes APS-Associated NETosis
Ajay Tambralli¹, Alyssa Harbaugh¹, Christine Rysenga¹, Kaitlyn Sabb¹, Srilakshmi Yalavarthi¹, Claire Hoy¹, Yu (Ray) Zuo¹ and Jason S Knight², ¹University of Michigan, Ann Arbor, MI, ²University of Michigan, Division of Rheumatology, Ann Arbor, MI
Background/Purpose: Malleable metabolic pathways guide both productive and pathological neutrophil functions, including neutrophil extracellular trap release (NETosis). NETosis plays an important role in APS pathophysiology.…
Abstract Number: 2021 • ACR Convergence 2022
Early Histopathological Changes of the Salivary Glands Associated with the Development of Primary Sjögren’s Syndrome
Xiaomei Shan¹, Clara Reichardt¹, Jeeshan Singh¹, Anne Zeitler², Christine Schauer¹, Jasmin Knopf¹, Martin Herrmann¹, Gerhard Grossmayer¹, Georg Schett¹ and Luis Munoz¹, ¹Universitätsklinikum Erlangen, Erlangen, Germany, ²Friedrich-Alexander University Erlangen Nürnberg, Erlangen, Germany
Background/Purpose: Primary Sjögren's syndrome (PSS) is a chronic inflammatory disease affecting exocrine glands including salivary and lacrimal glands that leads to dry eyes and mouth…
Abstract Number: 0692 • ACR Convergence 2022
The Interplay Between Lipid Peroxidation and Neutrophil Extracellular Trap (NET) Formation in APS Pathogenesis
Naveen Kumar S K¹, Claire Hoy¹, Christine Rysenga¹, Srilakshmi Yalavarthi¹, Cyrus Sarosh², Sherwin Navaz¹, Jacqueline Madison¹, Jason S Knight³ and Yu (Ray) Zuo¹, ¹University of Michigan, Ann Arbor, MI, ²University of Michigan, Temperance, MI, ³University of Michigan, Division of Rheumatology, Ann Arbor, MI
Background/Purpose: Lipid peroxidation is the result of disrupted redox homeostasis and functions as a key component in various cell death programs. Neutrophil extracellular trap (NET)…

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