Abstracts tagged "neutrophils"

Abstract Number: 1131 • ACR Convergence 2025
Variant Drives Tophus Formation through Dual Mechanisms: Extracellular Aggregation andvImpaired Macrophage Phagocytic Clearance
Yuqi wang¹, Lingjiang Zhu¹, Jinshuo Han², Junbin Qian³, Martin Herrmann⁴, Jing Xue¹ and Lei Liu¹, ¹The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China (People's Republic), ²Zhejiang University, School of Medicine, Hangzhou, China (People's Republic), ³Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China (People's Republic), ⁴University Hospital Erlangen, Erlangen, Germany
Background/Purpose: While aggregated neutrophil extracellular traps (aggNETs) constitute the primary structural component of tophi, the susceptible population for tophaceous gout remains poorly characterized. We investigated…
Abstract Number: 0079 • ACR Convergence 2025
Association of Protein Arginine Deiminase 4 with the Myosin-9 Motor Complex
Fatemeh Neela Moadab, Farheen Shaikh, Xiaoxing Wang, cecilia mustelin, Ethan Le, Rayan Najjar, Jie An, Alison Bays and Tomas Mustelin, University of Washington, Seattle, WA
Background/Purpose: Genetic association data, immunohistochemistry, and functional experiments implicate protein arginine deiminase 4 (PAD4) in the pathogenesis of rheumatoid arthritis (RA). This disease is characterized…
Abstract Number: 2700 • ACR Convergence 2025
Neutrophil Transcriptomics and Maturation Pathways in VEXAS Syndrome
Chloe Palmer¹, Gustaf Wigerblad², Tom Hill³, Benjamin Turturice¹, Urvashi Kaundal¹, Paul Schaughency³, Bhavisha Patel⁴, Emma Groarke⁵, Neal Young⁵, Stefania Dell'orso¹ and Peter Grayson⁶, ¹National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, ²National Institutes of Health, Stockholm, Sweden, ³NIAID, NIH, Bethesda, MD, ⁴National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Beltsville, MD, ⁵National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, ⁶National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Chevy Chase, MD
Background/Purpose: VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) syndrome is a severe adult-onset inflammatory disease caused by somatic mutations of the ubiquitin-like modifier activating enzyme…
Abstract Number: 1120 • ACR Convergence 2025
Synergistic Effects of IL-17F and IL-17A on Neutrophil Chemotaxis: Increased Risk of Candidiasis with Dual Blockade of IL-17A and IL17-F
Siba Raychaudhuri¹, Disha Chakraborty², Christine Abria² and Smriti K Raychaudhuri³, ¹UC Davis, School of Medicine/ VA Medical Center, Sacramento, Davis, CA, ²Sacramento VA Medical Center, Mather, CA, ³Sacramento VA Medical Center, Davis, CA
Background/Purpose: IL-17 is primarily secreted by Th17 cells. The IL-17 family has 6 related cytokines (IL-17A to IL17F); IL-17A and IL-17F, being key proinflammatory mediators.…
Abstract Number: 0078 • ACR Convergence 2025
Citrullinated Serum Albumin Is Not an Autoantigen in Rheumatoid Arthritis
Farheen Sultan Shaikh, cecilia mustelin, Xiaoxing Wang and Tomas Mustelin, University of Washington, Seattle, WA
Background/Purpose: Autoantibodies against citrullinated proteins (ACPAs) are diagnostic of rheumatoid arthritis (RA), an autoimmune disease primarily affecting synovial joints. Proteomic analyses have identified human serum…
Abstract Number: 2581 • ACR Convergence 2025
From Skin to Kidney: Neutrophil-Mediated Crosstalk Links Cutaneous Injury to Renal Inflammation and Vascular Remodeling in Lupus
Angelique Cortez¹, Lindsay Mendyka², Paola Garcia³, Elizabeth Nowak¹, Fred Kolling⁴, Lucas Salas¹, Christopher Burns⁵, Andrea Fava⁶ and Sladjana Skopelja-Gardner⁷, ¹Dartmouth College, Lebanon, NH, ²Dartmouth College, Lyme, NH, ³St. Mary's University, San Antonio, TX, ⁴Geisel School of Medicine at Dartmouth, Lebanon, NH, ⁵Dartmouth Health, Lebanon, NH, ⁶Johns Hopkins University, Baltimore, MD, ⁷Dartmouth Geisel School of Medicine, Lebanon, NH
Background/Purpose: The majority of SLE patients are sensitive to ultraviolet light (UV), which can lead to local and systemic inflammation, including lupus nephritis (LN) flares.…
Abstract Number: 0951 • ACR Convergence 2025
Epidermal IFNκ Increases Circulating and Cutaneous Monocytes in a C57/Bl6 Overexpression Mouse Model
Patrick O'Brien, Benjamin Klein, Deborah Colesa and J. Michelle Kahlenberg, University of Michigan, Ann Arbor, MI
Background/Purpose: Lupus is a heterogeneous inflammatory autoimmune disease affecting a variety of organs, including skin manifestations such as photosensitivity and cutaneous lesions. The skin of…
Abstract Number: 0067 • ACR Convergence 2025
Identification of Neutrophil Extracellular Traps in Explanted Human Lungs with Rheumatoid Arthritis-related Interstitial Lung Disease
Amara Seng¹, Kensuke Suga², Diana Tran³, Anvita Singaraju⁴, Tanyalak Parimon⁵, Youn Jung Choi⁶, Justyna Fert-Bober⁷, Jon Giles⁸, Peter Chen⁵ and Nunzio Bottini⁹, ¹Cedars-Sinai Medical Center, Los Angeles, CA, ²Kao Autoimmunity Institute, Cedars-Sinai Medical Center, Beverly Hills, CA, ³Cedars Sinai Medical Center, La Cañada Flintridge, CA, ⁴Kao Autoimmunity Institute, Cedars-Sinai Medical Center, Los Angeles, ⁵Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, ⁶Kao Autoimmunity Institute, Cedars-Sinai Medical Center, Los Angeles, CA, ⁷Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, ⁸Cedars Sinai Medical Center, Los Angeles, CA, ⁹Cedars Sinai Medical Center, Beverly Hills, CA
Background/Purpose: Symptomatic rheumatoid arthritis-related interstitial lung disease (RA-ILD) is prevalent in about 10% of patients with RA and confers a higher mortality compared with RA…
Abstract Number: 2580 • ACR Convergence 2025
Estrogen Modulates Neutrophil Biology: Implications for Autoimmunity
William Ambler¹, Eduardo Patino-Martinez¹, Gustaf Wigerblad¹, Shuichiro Nakabo², Jorge Romo-Tena³, Norio Hanata⁴, James Simone¹, Stephen Brooks¹, Kan Jiang⁵, Hong-wei Sun¹, Faiza Naz⁶, Shamima Islam⁶, Gustavo Gutierrez-Cruz¹, Stefania Dell'Orso¹, Anshu Deewan⁷, Vicky Chen⁷, Paul Schaughency⁸, Carmelo Carmona-Rivera⁴, Sarfaraz Hasni¹, Veronica Gomez-Lobo⁹ and Mariana Kaplan⁴, ¹NIH/NIAMS, Bethesda, MD, ²NIAMS, NIH, Bethesda, MD, ³Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, ⁴Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, Bethesda, MD, ⁵Biodata Mining and Discovery Section, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, Bethesda, ⁶National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, ⁷NIH/NIAID, Bethesda, MD, ⁸NIAID, NIH, Bethesda, MD, ⁹NIH/NICHD, Bethesda, MD
Background/Purpose: Neutrophils are essential for inflammation and host defense against infections. Our group has previously highlighted their key roles in the pathogenesis of diseases that…
Abstract Number: 0928 • ACR Convergence 2025
Radiolabelled anti-citrullinated histone antibody CIT-013 as a tool to visualize NET rich inflamed joints in a collagen induced arthritic mouse model
Annemarie Kip¹, Daphne Dorst², Birgitte Walgreen², Monique Helsen², Eric meldrum¹, Renato Chirivi¹ and Marije Koenders², ¹Citryll BV, Oss, Netherlands, ²RadboudUMC, Nijmegen, Netherlands
Background/Purpose: Neutrophil Extracellular Traps (NETs) contribute to the pathophysiology of multiple immune-mediated inflammatory diseases including Rheumatoid Arthritis (RA), and may be promising therapeutic targets. The…
Abstract Number: 0059 • ACR Convergence 2025
Formyl Peptide Receptor 1 (FPR1) Influences Arthritis Severity in a Sex- and Compartment-Specific Manner
Ryan D. Stultz¹, Payton Hermanson², Noelle Mullin³, Simeon Ramsey³ and Christian Lood², ¹University of Washington, Division of Rheumatology, Seattle, WA, ²University of Washington, Seattle, WA, ³Pfizer Inc., Cambridge, MA
Background/Purpose: Rheumatoid arthritis (RA) is a chronic, systemic inflammatory disease that disproportionately affects females over males (3:1). Although sex-based immune differences have been documented, particularly…
Abstract Number: 2579 • ACR Convergence 2025
Mutant COPA Permits Aberrant NETosis and Exacerbates Autoimmune Lung Disease
Richard Moore¹, Lihong Huo¹, Colin Koziel¹, Barry Stripp², Tiphanie Vogel³, Daniel Wallace⁴ and Caroline Jefferies⁵, ¹Cedars-Sinai, Beverly Hills, CA, ²Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, ³Baylor College of Medicine, Houston, TX, ⁴Cedars Sinai Medical Center, Studio City, CA, ⁵Cedars-Sinai Medical Center, Beverly Hills, CA
Background/Purpose: COPA syndrome is an autosomal dominant disease caused by missense mutations within the COPA gene. Typical onset begins during childhood with patients developing lung…
Abstract Number: 0917 • ACR Convergence 2025
Synovial Tissue Neutrophils are Associated with Disease Activity and Early Remission in Rheumatoid Arthritis
Annabelle Small¹, Vincent Wong², Christopher Altmann¹, Helen Weedon³, Malcolm Smith⁴, Susanna Proudman⁵ and Mihir Wechalekar⁶, ¹Flinders University, Bedford Park, South Australia, Australia, ²College of Medicine and Public Health, Bedford Park, South Australia, Australia, ³Flinders University of South Australia, Bedford Park, South Australia, Australia, ⁴Flinders University, Adelaide, South Australia, Australia, ⁵Royal Adelaide Hospital and University of Adelaide, Medindie, South Australia, Australia, ⁶Flinders Medical Centre and Flinders University, Bedford Park, South Australia, Australia
Background/Purpose: Neutrophils drive local pathology of rheumatoid arthritis (RA) in the synovial tissue (ST) through local production inflammatory mediators, cytokines, and extracellular traps. However, despite…
Abstract Number: 2425 • ACR Convergence 2025
Neutrophil Transcriptomics in SLE: Exploring Intrinsic, Ex Vivo Adaptation, and CAR-T Cell Therapy-Induced Changes
Ehsan Dehdashtian¹, Stefania Gallucci², Guangnan Hu³, Dominic Borie⁴ and Roberto Caricchio⁵, ¹UMass Chan Medical School, Worcester, MA, ²Temple University School of Medicine, Worcester, MA, ³UMass Chan School of Medicine, Worcester, MA, ⁴Kyverna Therapeutics, Emeryville, CA, ⁵University of Massachusetts Chan Medical School, Worcester, MA
Background/Purpose: Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by dysregulation of the adaptive and innate immune systems. Neutrophils, key players in innate immunity,…
Abstract Number: 0665 • ACR Convergence 2025
Infusion-Related Reactions (IRRs) and Hematologic Events Associated With Obinutuzumab in Lupus Nephritis: A Secondary Analysis of a Phase III Trial
Richard Furie¹, Teresa Baczkowska², Amit Saxena³, Imran Hassan⁴, Bongin Yoo⁵, Ben Lanza⁶, Himanshi Sehgal⁷, Frederic Boissard⁷, Jay Garg⁵, Thomas Schindler⁷, Elsa Martins⁷, William Pendergraft⁵ and Brad Rovin⁸, ¹Division of Rheumatology, Northwell Health, Great Neck, NY, ²Department of Transplantation Medicine, Nephrology and Internal Medicine, Medical University of Warsaw, Warsaw, Poland, ³Division of Rheumatology, Department of Medicine, NYU Grossman School of Medicine, New York, NY, ⁴Hoffmann-La Roche Ltd, Mississauga, ON, Canada, ⁵Genentech, Inc., South San Francisco, CA, ⁶Roche Products Ltd, Welwyn Garden City, United Kingdom, ⁷F. Hoffmann-La Roche Ltd, Basel, Switzerland, ⁸The Ohio State University, Columbus, OH
Background/Purpose: The REGENCY (NCT04221477) trial demonstrated superior efficacy of obinutuzumab and standard therapy (OBI+ST) over placebo and ST (PBO+ST) in patients (pts) with active lupus…

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