Abstracts tagged "neutrophils"

Abstract Number: 0515 • ACR Convergence 2024
Scavenging Isolevuglandins with 2-HOBA Decreases In Vitro Neutrophil Extracellular Traps in Cells from Patients with Rheumatoid Arthritis
Olivia Posey, Anastasiia Phothisane, Phicharmon Kulapatana and Michelle Ormseth, Vanderbilt University Medical Center, Nashville, TN
Background/Purpose: Neutrophils contribute to the innate immune response of killing pathogens through the formation of neutrophil extracellular traps (NETs), which is also called NETosis. NETosis…
Abstract Number: 2690 • ACR Convergence 2024
ANCA IgG Promotion of Neutrophil Recruitment, Migration and Vascular Damage in ANCA Associated Vasculitis May Be Enhanced by Hypoxia
Noelle Pisacano, Amrita Dhutia, Stephen Rothery, Charles Pusey, Edwin Chilvers, Andrew Cowburn, Katharine Lodge and Maria Prendecki, Imperial College London, London, United Kingdom
Background/Purpose: Neutrophils are main mediators of disease in ANCA associated vasculitis (AAV). Pathogenic ANCA IgG on neutrophils promotes neutrophil adhesion and migration at the endothelium.…
Abstract Number: 0766 • ACR Convergence 2024
Neutrophil Transcriptomics in VEXAS Syndrome
Chloe Palmer¹, Gustaf Wigerblad¹, Tom Hill², Bhavisha Patel³, Emma Groarke⁴, Neal Young⁴, Stefania Dell'Orso⁵ and Peter Grayson⁶, ¹National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, ²National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, ³National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Beltsville, MD, ⁴National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, ⁵National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, Bethesda, MD, ⁶National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Chevy Chase, MD
Background/Purpose: Vacuoles, E1 ubiquitin-activating enzyme, X-linked, autoinflammatory, somatic (VEXAS) syndrome is caused by somatic mutations of the ubiquitin-like modifier activating enzyme 1 (UBA1) gene and…
Abstract Number: 0773 • ACR Convergence 2024
Anti-Citrullinated Histone Antibody CIT-013 Targets NETs in Inflamed Joints and Halts NET-mediated Joint Deterioration
Leonie Middelink¹, Annemarie Kip², Maarten van der Linden³, Sangeeta Kumari², Stephanie van Dalen², Josephine Stein⁴, Tirza Bruurmijn², Martyn Foster⁵, Peter van Zandvoort², Patrick Round², Eric Meldrum², Helmuth van Es² and Renato Chirivi², ¹Citryll, Oss, Noord-Brabant, Netherlands, ²Citryll BV, Oss, Noord-Brabant, Netherlands, ³Citryll BV, Oss, Netherlands, ⁴Citryll BV, Oss, Noord-Holland, Netherlands, ⁵Experimental Pathology Consultancy, Benfleet, United Kingdom
Background/Purpose: Neutrophil extracellular traps (NETs) contribute to the pathophysiology of many immune-mediated inflammatory diseases (IMIDs). Though NETosis-targeting therapeutics have shown potential as effective treatments, currently…
Abstract Number: 0801 • ACR Convergence 2024
Neutrophil Activation as a Novel Marker of Lung Disease in Rheumatoid Arthritis
Jia Shi¹, Yang Wu¹, Ting Wang², Chen Yu³, qian wang⁴, Xinping Tian⁵, Mengtao Li⁴, Kristen Demoruelle⁶, Joshua Solomon⁷ and Christian Lood², ¹University of Washington, Seattle, ²University of Washington, Seattle, WA, ³Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Dong Cheng Qu, China (People's Republic), ⁴Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China 2National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China, ⁵Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China, ⁶University of Colorado Anschutz Medical Campus, Golden, CO, ⁷National Jewish Health, Denver, CO
Background/Purpose: Neutrophil activation is seen in rheumatoid arthritis (RA), but its involvement in RA interstitial lung disease (RA-ILD) is not clear. Levels of N-formyl methionine…
Abstract Number: 0918 • ACR Convergence 2024
Anti-VISTA Antibody Suppresses Neutrophil-mediated Inflammation
Elizabeth Nowak¹, Jiannan Li¹, Mohamed ElTanbouly¹, Lindsay Mendyka², Louise Lines¹, Rodwell Mabaera³, Christopher Burns⁴, Randolph Noelle¹ and Sladjana Skopelja-Gardner¹, ¹Geisel School of Medicine at Dartmouth, Lebanon, ²Dartmouth Hitchcock Memorial Hospital, Lyme, NH, ³Dartmouth Hitchcock Medical Center, Lebanon, ⁴Dartmouth Hitchcock Medical Center, Lebanon, NH
Background/Purpose: A growing body of evidence suggests that VISTA, an immune checkpoint inhibitory receptor, plays a central role in the regulation of innate immunity in…
Abstract Number: 0931 • ACR Convergence 2024
Salivary Granular Convoluted Tubules Contribute to Maintain Tissue-specific Tolerance – Implications for the Development of Murine Sjögren´s Syndrome
Xiaomei Shan¹, Clara Reichardt¹, Marco Munoz Becerra¹, Aleix Rigau², Lena Müller³, Anne Zeitler¹, Jasmin Knopf⁴, Gerhard Grossmayer¹, Martin Herrmann¹, Christine Schauer¹, Markus Eckstein⁵, Georg Schett⁶ and Luis Munoz⁷, ¹Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany, ²Friedrich-Alexander Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ³Medizin Universität Wien, Vienna, Austria, ⁴Universitätsklinikum Mannheim, Mannheim, Germany, ⁵Institute of Pathology and Comprehensive Cancer Center EMN, Friedrich-Alexander- Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ⁶Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, ⁷Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen
Background/Purpose: Primary Sjögren's syndrome (PSS) is a chronic inflammatory disease affecting exocrine glands with an important systemic autoimmune reaction against some nuclear and membrane bound…
Abstract Number: 0933 • ACR Convergence 2024
NLRP3 Inflammasome Promotes Release of Peptidyl Arginine Deiminases2 and 4 from Human Neutrophils
Teneema Kuriakose, Mingxin Yang, Lacie Scaletta and Gary Sims, Immunology Biosciences, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD
Background/Purpose: Autoantibodies targeting citrullinated proteins (ACPAs) are a characteristic feature and a diagnostic marker in rheumatoid arthritis (RA). The generation of citrullinated protein autoantigens is…
Abstract Number: 0951 • ACR Convergence 2024
A Feedback Loop Involving mtDNA, Platelets and Neutrophil Extracellular Traps Amplifies Inflammation in Systemic Sclerosis
Stavros Giaglis¹, Diego Kyburz² and Ulrich Walker³, ¹Experimental Rheumatology Laboratory, University of Basel, Basel, Switzerland, ²University Hospital Basel, Basel, Switzerland, ³Basel University Hospital, Basel, Switzerland
Background/Purpose: Mitochondria are essential eucaryotic cell organelles with several bacterial features, such as a double-stranded circular genome with hypomethylated CpG areas (1). A fundamental role of…
Abstract Number: 0046 • ACR Convergence 2024
Impaired Neutrophil Extracellular Trap (NET) Degradation in Rheumatoid Arthritis (RA) and Pre-clinical RA Is Mediated by Anti-NET Antibodies
Jeba Atkia Maisha¹, Alina Sememenko², Jun Kim², Mario Navarrete², XIAOBO MENG¹, Hani El-Gabalawy¹ and Liam O'Neil¹, ¹University of Manitoba, Winnipeg, MB, Canada, ²University of Manitoba, Winnipeg, Canada
Background/Purpose: Rheumatoid Arthritis (RA) begins after a prolonged preclinical phase which is marked by the development of RA antibodies, typically against citrullinated proteins (ACPA). The…
Abstract Number: 1268 • ACR Convergence 2024
Neutrophil Lymphocyte Ratio as a Novel Marker of Skin Disease Activity in Older Children with Juvenile Dermatomyositis
Shreya Swaminathan¹, Nidhi Naik², Susan Shenoi³, Sarah Vandenbergen⁴, Jessica Turnier⁵, Zilan Zheng⁶, Jessica Neely⁶, James Andrews⁷ and Christian Lood⁸, ¹University of Washington, Seattle, ²Seattle children's hospital, Bothell, WA, ³Seattle Children's Hospital and Research Center, Mercer Island, WA, WA, ⁴University of Michigan, Ann Arbor, MI, ⁵University of Michigan, Saline, MI, ⁶UCSF, San Francisco, CA, ⁷University of Alabama at Birmingham, Birmingham, AL, ⁸University of Washington, Seattle, WA
Background/Purpose: Exaggerated neutrophil activation can lead to inflammation and organ damage in rheumatic diseases, including dermatomyositis (DM). In both juvenile (JDM) and adult DM, markers…
Abstract Number: 0063 • ACR Convergence 2024
Splicing into Action:Investigating the Role of Alternative Splicing in Rheumatoid Arthritis Neutrophils
Rayan Najjar¹, Noga Rogel² and Tomas Mustelin³, ¹University of Washington, Seattle, ²University of Washinton, Seattle, ³University of Washington, Seattle, WA
Background/Purpose: Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by a variable response to therapies, reflecting its complex and incompletely understood pathogenesis. Emerging research suggests…
Abstract Number: 1550 • ACR Convergence 2024
CD19 CAR T Cell Therapy Suppresses the Inflammatory Profile of Neutrophils in Systemic Lupus Erythematosus
Panagiotis Garantziotis¹, Kirill Anoshkin¹, Melanie Hagen², Andreas Wirsching², Andreas MAckensen³, Georg Schett⁴ and Ricardo Grieshaber-Bouyer⁵, ¹Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, Erlangen, Germany, ²Department of Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Bayern, Germany, ³Department of Medicine 5 - Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Uniklinikum Erlangen, Erlangen, Bayern, Germany, ⁴Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, ⁵Department of Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany
Background/Purpose: Patients with Systemic Lupus Erythematosus (SLE) exhibit increased formation of Neutrophil Extracellular Traps and production of proinflammatory cytokines, which can perpetuate autoimmunity. Furthermore, NETs…
Abstract Number: 0065 • ACR Convergence 2024
Evidence of Membranolytic Targeting and Intracellular Citrullinationin Neutrophils Isolated from Patients with Rheumatoid Arthritis
Neela Fatemeh Moadab¹, Tal Gazitt², Rayan Najjar¹, Ethan Le¹, J Lee Nelson³, Vijay Joshua⁴, Keith Elkon¹, Caroline Grönwall⁴ and Tomas Mustelin¹, ¹University of Washington, Seattle, WA, ²Carmel Hospital, Haifa, Israel, ³University of Washington and Fred Hutchinson Cancer Center, Seattle, WA, ⁴Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Anti-citrullinated protein autoantibodies (ACPA) are diagnostic for rheumatoid arthritis (RA). The antigens recognized by these autoantibodies are produced by protein arginine deiminases (PADs), particularly…
Abstract Number: 1577 • ACR Convergence 2024
Elevated Neutrophil Extracellular Traps in Systemic Sclerosis-associated Vasculopathy and Suppression by a Synthetic Prostacyclin Analog
Neda Kortam¹, Wenying Liang¹, Claire Shiple¹, Suiyuan Huang¹, Rosemary Gedert¹, James St. Clair¹, Cyrus Sarosh², Caroline Foster¹, Eliza Pei-Suen Tsou¹, John Varga¹, Jason Knight¹, Dinesh Khanna¹ and Ramadan Ali¹, ¹University of Michigan, Ann Arbor, MI, ²University of Michigan, Temperance, MI
Background/Purpose: Neutrophils and neutrophil extracellular traps (NETs) contribute to the vascular complications of multiple diseases, but their role in systemic sclerosis (SSc) is understudied. We…

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