Abstracts tagged "macrophages"

Abstract Number: 1793 • ACR Convergence 2025
Sex-associated changes to synovial macrophages in the aging joint
Matthew Dapas¹, Erica De Jong², Yidan Wang³, Cally Mills³, Samuel Dowling⁴, Tyler Therron⁵, Carla Marie Cuda³, Dawn Bowdish⁶ and Deborah Rachelle Winter⁷, ¹Northwestern University Feinberg School of Medicine, Chicago, IL, ²McMaster Immunology Research Centre, Hamilton, ON, Canada, ³Northwestern University, Chicago, IL, ⁴Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ⁵Northwestern Feinberg School of Medicine, Chicago, IL, ⁶McMaster University, Hamilton, ON, Canada, ⁷Northwestern University, Skokie, IL
Background/Purpose: Macrophages are found in nearly every tissue of the body where they maintain homeostasis and drive healthy immune response. However, macrophages are dysregulated with…
Abstract Number: 0921 • ACR Convergence 2025
Fibrinogen Co-Modified with Malondialdehyde-Acetaldehyde and Citrulline Promotes Pro-Inflammatory Macrophage Differentiation Through p38 and NF-κB Signaling
Hannah Johnson¹, Wenxian Zhou², Michael Duryee¹, Carlos Hunter¹, Geoffrey Thiele¹ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE
Background/Purpose: Citrulline (CIT) and malondialdehyde-acetaldehyde (MAA) co-adduct native proteins in RA tissues to create a dual pro-inflammatory and pro-fibrotic milieu. Our previous work demonstrated that…
Abstract Number: 1787 • ACR Convergence 2025
Spatial and Quantitative Semiautomated Image Analysis of Synovial Biopsies Studied Using a Novel High-Plex Immunofluorescence Platform
Estefania Quesada-Masachs¹, Luis Peñaranda Bolaño¹, Aakriti Arora², Jessica Murillo-Saich³, Edward Lo⁴, Tad George⁴, Daniel Tanoeihusada⁴, Sara McArdle⁵ and Monica Guma⁶, ¹University of Miami, Miami, FL, ²University of Miami / Jackson Memorial Hospital, Miami, FL, ³University of California, San Diego, San Diego, CA, ⁴RareCyte, Seattle, WA, ⁵La Jolla Institute for Immunology, La Jolla, CA, ⁶University of California San Diego, San Diego, CA
Background/Purpose: Although not part of the formal ACR criteria for RA, PsA, or OA, synovial pathology can be a helpful tool in clinical practice. Histopathologic…
Abstract Number: 0908 • ACR Convergence 2025
E-602 (Efgitasialase alfa) Enhances Memory B Cell Depletion and Reduces Profibrotic Macrophages via Desialylation in Autoimmune Disease
Hrishikesh Mehta¹, Vijayashree Mysore¹, Chih-Hsing Chou¹, Lizhi Cao¹, Rui Liu², Tianrui Fan², Jijun Yuan², James Broderick¹ and Li Peng¹, ¹Palleon Pharmaceuticals, Waltham, MA, ²Shanghai Henlius Biotech, Shanghai, China (People's Republic)
Background/Purpose: Abnormal cell surface glycosylation has been observed in various autoimmune diseases, including systemic lupus erythematosus (SLE) and membranous nephropathy. Among these glycan modifications, sialoglycans…
Abstract Number: 1779 • ACR Convergence 2025
Citrullinated and Malondialdehyde-Acetaldehyde Modified Fibrinogen Activates Macrophages and Induces Inflammatory Responses in Coronary Endothelium
Wenxian Zhou¹, Hannah Johnson², Michael Duryee², Engle Sharp², Carlos Hunter², Tate Johnson², Mabruka Alfaidi², Daniel Anderson³, Kishore Bidasee², Geoffrey Thiele² and Ted Mikuls², ¹University of Nebraska Medical Center, Bellevue, NE, ²University of Nebraska Medical Center, Omaha, NE, ^30587964, Durham, NC
Background/Purpose: Endothelial cell (EC) dysfunction is a key driver of cardiovascular (CV) complications in rheumatoid arthritis (RA), yet mechanisms underlying EC dysfunction in RA are…
Abstract Number: 0893 • ACR Convergence 2025
Transcriptomic insights into GCA compared to clinically diverse controls: Inflammation, Aging, Therapeutic Targets and the role of SPP1 in the temporal artery
Ingrid Lindquist¹, Alisha Eskew², Dongsoek Choi³, David Wilson⁴, Diva Salomao⁵, Hillary Stiefel⁴, Daniel Albert⁴, Kiana Vakil-Gilani⁶, Daniela Ghetie⁷, James Rosenbaum⁸ and Marcia Friedman⁹, ¹Portland VA Medical Center, Portland, OR, ²OHSU, Portland, OR, ³OHSU, Portland, ⁴Casey Eye Institute OHSU, Portland, OR, ⁵Mayo Clinic, Rochester, MN, ⁶PeaceHealth, Portland, OR, ⁷OHSU, Lake Oswego, OR, ⁸Legacy Devers Eye Institute, Portland, OR, ⁹Immpact Bio, Beaverton, OR
Background/Purpose: Giant cell arteritis (GCA) is the most common vasculitis in people over 50 years old and is a clinical diagnosis bolstered by non-specific inflammatory…
Abstract Number: 0057 • ACR Convergence 2024
Flow Cytometry of Cells Within Induced Sputum from Individuals At-Risk for RA Reveals Relative Expansion of Small Macrophages
Hideto Takada¹, Brian Hattel², Marie Feser³, LauraKay Moss², Yuko Okamoto⁴, Mark Gillespie⁵, Adam Savage⁵, Troy Torgerson⁶, V. Michael Holers⁷, Kevin Deane⁸ and Kristen Demoruelle⁹, ¹Tokyo Women's Medical University, Denver, CO, ²University of Colorado Anschutz Medical Campus, Denver, CO, ³Division of Rheumatology, University of Colorado School of Medicine, Aurora, CO, ⁴Tokyo Women's Medical University Division of Rheumatology, Shinjyuku-ku, Tokyo, Japan, ⁵Allen Institute for Immunology, Seattle, WA, ⁶Allen Institute for Immunology, Enumclaw, WA, ⁷University of Colorado, Denver, CO, ⁸University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ⁹University of Colorado Anschutz Medical Campus, Golden, CO
Background/Purpose: Serum elevations of ACPA in the absence of inflammatory arthritis is a well-established risk factor for the future development of clinical RA. The lung…
Abstract Number: 0966 • ACR Convergence 2024
CDDO-Me Attenuates Pro-fibrotic Activation in Macrophages and Fibroblasts in Systemic Sclerosis
Heetaek Yang¹, Chanhyuk Park², Chen-Yu Wang³, Emily Morris⁴, Karen Liby⁵, Michael Whitfield⁶ and Patricia Pioli², ¹Dartmouth College, West Lebanon, NH, ²Geisel School of Medicine at Dartmouth, Lebanon, NH, ³Dartmouth College, Lebanon, NH, ⁴Dartmouth College, Enfield, NH, ⁵Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, ⁶Geisel School of Medicine at Dartmouth, Hanover, NH
Background/Purpose: Systemic Sclerosis (SSc) is characterized by dysfunctional immune activation, oxidative stress, and fibrosis. In prior work, we have shown that SSc macrophages (MØs) have…
Abstract Number: 2547 • ACR Convergence 2024
Neurophysiological Phenotypes Are Uncoupled from Toll-like Receptor-Mediated Peripheral Disease in a Mouse Model of Neuropsychiatric Symptoms of Systemic Lupus Erythematosus
Cecilia Stumpf¹, Vanessa Rodriguez¹ and Carla Cuda², ¹Northwestern University, Chicago, ²Northwestern University, Chicago, IL
Background/Purpose: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with diverse clinical presentations, including neuropsychiatric symptoms (NPSLE). Despite being a major cause of morbidity…
Abstract Number: 0061 • ACR Convergence 2024
Comparative Transcriptional Profiling of IPF and RA-ILD Lung Tissue Demonstrates Both Overlapping and Distinct Cell-specific Signaling Pathways
Joshua Sciurba¹, Daniel Kass¹, Eleanor Valenzi², John Sembrat², Robert Lafyatis³ and Dana Ascherman⁴, ¹University of Pittsburgh School of Medicine, Pittsburgh, PA, ²University of Pittsburgh, Pittsburgh, PA, ³Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, ⁴Division of Rheumatology and Clinical Immunology, University of Pittsburgh Medical Center, Pittsburgh, PA
Background/Purpose: Transcriptional profiling represents a powerful tool for deciphering disease-relevant pathways and deriving functional biomarkers. Given the shared demographic, genetic, and clinico-epidemiologic features between rheumatoid…
Abstract Number: 0972 • ACR Convergence 2024
Downregulated Fli1 in Scleroderma Myeloid Cells Contributes to Cardiac Fibrosis via a Galectin-3/mTOR Dependent Pathway
Fatima El adili¹, Moyo Mudhibadhi², Giovanni ligresti³, Maria Trojanowska² and Andreea Bujor³, ¹Boston Medical Center, Boston, MA, ²Boston university medical school, Boston, MA, ³Boston University, Boston, MA
Background/Purpose: Cardiac fibrosis is a common complication in Systemic sclerosis (SSc), but the pathogenesis is largely unknown. We have previously shown that monocytes isolated from…
Abstract Number: 2550 • ACR Convergence 2024
Infiltrating and Resident Macrophages in Lupus Nephritis: Scar Associated Macrophage Phagocytic Dysfunction and Fibroblast Activation
Chirag Raparia¹, Paul Hoover², Arnon Arazi³, Nir Hacohen⁴ and Anne Davidson⁵, ¹Donald and Barbara Zucker School of Medicine At Hofstra/Northwell, Shoreham, NY, ²Brigham and Women's Hospital, SWAMPSCOTT, MA, ³Feinstein Institutes for Medical Research, Melrose, MA, ⁴Broad Institute of MIT and Harvard, Boston, MA, ⁵Feinstein Institutes for Medical Research, Manhasset, NY
Background/Purpose: Lupus nephritis (LN) is driven by a heterogeneous population of renal macrophages. We have previously reported that the renal macrophage subpopulations are similar in…
Abstract Number: 0062 • ACR Convergence 2024
Pro-Fibrotic Effects of Malondialdehyde-Acetaldehyde-Adducted and/or Citrullinated Proteins on Macrophages and Human Lung Fibroblasts
Lauren Klingemann¹, Nozima Aripova¹, Nigina Aripova², Michael Duryee¹, Carlos Hunter¹, Jill Poole¹, Bryant England¹, Ted Mikuls¹ and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²WUSTL, St. Louis, MO
Background/Purpose: Clinically evident rheumatoid arthritis-associated interstitial lung disease (RA-ILD) affects approximately 10-15% of patients with rheumatoid arthritis (RA) and accounts for the most overrepresented cause…
Abstract Number: 0973 • ACR Convergence 2024
Mechano-transduction via MRTF-A Pathway Is Required for Cytokine Release by Scleroderma Macrophages
Sandra Lopez Garces¹, Guan Hui Tricia Lim², Jorlin Liu³, Maahia Choudhary³, Juno Erin Vimalenthiran,³, Angela Tam¹, David Abraham³, Christopher Denton⁴, Bahja Ahmed Abdi¹ and Richard Stratton⁵, ¹University College London, London, United Kingdom, ²Centre for Rheumatology and Connective Tissue Diseases, University College London Medical School, Royal Free Campus, London, United Kingdom, ³UCL, London, United Kingdom, ⁴University College London, Northwood, United Kingdom, ⁵UCL, London, England, United Kingdom
Background/Purpose: In keeping with hallmark clinical evidence of stiffening and fibrotic thickening of the skin, we and others have previously demonstrated a role for the…
Abstract Number: 2593 • ACR Convergence 2024
A Long-term Synovial Tissue 3D Model Incorporating Fibroblasts, Macrophages, Endothelial Cells, and Other Immune Cells Such as Innate Lymphoid Cells Enables Animal Model-Independent Rheumatoid Arthritis Research
Miriam Bollmann¹, Oskar Landberg², Negar Ayoubzadeh², Charlotte A. Jonsson², Inger Gjertsson² and Mattias Svensson², ¹University of Gothenburg, Göteborg, Sweden, ²University of Gothenburg, Gothenburg, Sweden
Background/Purpose: Rheumatoid arthritis (RA) is a chronic inflammatory joint disease with multiple tissues contributing to its pathology, including the synovial membrane. The RA synovial membrane…

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