Abstracts tagged "macrophages"

Abstract Number: 0048 • ACR Convergence 2023
Monosodium Urate Crystals Activate an Immune Tolerance Program That Restrains the Activation of Inflammatory Signaling in Macrophages During Gout Flares
Mohnish Alishala¹, Stephen Calderon¹, Anyan Chen¹, Monica Guma², Christopher glass¹ and Isidoro Cobo¹, ¹University of California San Diego, San Diego, CA, ²University of California San Diego, La Jolla, CA
Background/Purpose: Gout is the most frequent form of inflammatory arthritis, with episodes of self-resolving acute inflammation in the joint caused by the deposition of monosodium…
Abstract Number: 0944 • ACR Convergence 2023
Macrophages Regulate Adipocyte Differentiation and Proliferation in Skin Fibrosis
Chanhyuk Park, Helen Jarnagin, Michael Whitfield and Patricia Pioli, Geisel School of Medicine at Dartmouth, Hanover, NH
Background/Purpose: Autoimmune systemic sclerosis (SSc) is characterized by inflammation, vasculopathy, and dermal and internal organ fibrosis. A widely-reported but poorly understood aspect of SSc skin…
Abstract Number: 0051 • ACR Convergence 2023
CD14+CD64+ Classical Monocytes Are the Main Producers of IL-23 at the Enthesis
Nicole McDermott¹, Thomas Macleod¹, Ala Altaie¹, Liz Straszynski², Robert Dunsmuir³, Vishal Borse³, Peter Loughenbury³, Davide Simone⁴, Stevephen Sansom⁴, Christopher Buckley⁴ and Dennis McGonagle⁵, ¹University of Leeds, Leeds Institute of Rheumatic and Musculoskeletal Medicine, Leeds, United Kingdom, ²Leeds Institute of Medical Research at St. James’s, Leeds, United Kingdom, ³Leeds Teaching Hospital NHS Trust, Leeds, United Kingdom, ⁴Kennedy Institute of Rheumatology, Oxford, United Kingdom, ⁵Leeds Biomedical Research Centre, University of Leeds, Leeds, United Kingdom
Background/Purpose: IL-23 is a key cytokine involved in diseases such as psoriasis, psoriatic arthritis and spondyloarthropathies (SpA) and inflammatory bowel disease.IL-23 is produced by activated…
Abstract Number: 0947 • ACR Convergence 2023
Fcγ Receptors Define Pro-Phagocytic Macrophages and Trigger Pro-Inflammatory Responses in Patients with Systemic Sclerosis
Amela Hukara¹, Gino Andrea Bonazza¹, Tracy Tabib², Raphael Micheroli¹, Suzana Jordan³, Kristina Bürki¹, Sylvie Schlitz Schönbächler¹, Adrian Ciurea⁴, Oliver Distler³, Robert Lafyatis⁵, Przemyslaw Blyszczuk¹ and Gabriela Kania¹, ¹Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland, ²Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, ³Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland, ⁴University Hospital Zurich, Zürich, Switzerland, ⁵University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Fcy receptors (FcγR) are opsonic phagocytic receptors, requiring tight regulations to prevent uncontrolled activation of pro-inflammatory phagocytosis. SSc macrophages display an alternatively-activated profibrotic phenotype.…
Abstract Number: 0053 • ACR Convergence 2023
Nintedanib Downregulates the Profibrotic M2 Phenotype of Macrophages Obtained from Systemic Sclerosis Patients Affected by Interstitial Lung Disease
Stefano Soldano¹, Paola Montagna¹, Emanuele Gotelli¹, Andrea Cere¹, Rosanna Campitiello¹, Sabrina Paolino¹, Carmen Pizzorni¹, Alberto Sulli¹, Vanessa Smith² and Maurizio Cutolo³, ¹Laboratory of Experimental Rheumatology and Academic Division of Rheumatology, Department of Internal Medicine, University of Genoa, IRCCS San Martino Polyclinic Hospital, Genoa, Italy, ²Ghent University Hospital, Gent, Belgium, ³Laboratory of Experimental Rheumatology, Division of Clinical Rheumatology, Department of Internal Medicine, University of Genova, IRCCS San Martino Polyclinic, Genova, Italy
Background/Purpose: Systemic sclerosis (SSc) is a systemic autoimmune connective tissue disease, characterized by microvascular damage, alteration of immune response and progressive fibrosis of skin and…
Abstract Number: 0959 • ACR Convergence 2023
Redirecting Macrophage Immunophenotype Attenuates Inflammation and Fibrotic Activation in Systemic Sclerosis
Heetaek Yang¹, Rajan Bhandari¹, Saemi Han², Chanhyuk Park¹, Chen-Yu Wang², Emily Morris¹, Michael Whitfield¹ and Patricia Pioli¹, ¹Geisel School of Medicine at Dartmouth, Hanover, NH, ²Dartmouth College, Hanover, NH
Background/Purpose: Systemic Sclerosis (SSc) is a rare autoimmune disease with multiple clinical and pathological manifestations including vascular involvement, immune activation, oxidative stress, and fibrosis. In…
Abstract Number: 0529 • ACR Convergence 2022
Complex Relationships Between Inflammation and Clonal Hematopoiesis in Systemic Vasculitis
Adrianna Jones¹, Kristina Wells¹, Fernanda Gutierrez-Rodrigues², Cameron Rankin³, Wanxia Tsai³, Bhavisha Patel⁴, Kaitlin Quinn¹, Dalton Hironaka², Massimo Gadina⁵, Keith Sikora¹, Neal Young² and Peter Grayson⁶, ¹National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, ²National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, ³NIAMS/NIH, Bethesda, MD, ⁴National Institutes of Health, Beltsville, MD, ⁵Translational Immunology Section, NIAMS, NIH, Bethesda, MD, ⁶National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD
Background/Purpose: Clonal hematopoiesis of indeterminate potential (CHIP) is defined by somatic mutations in a set of genes commonly associated with myeloid neoplasms in an otherwise…
Abstract Number: 1666 • ACR Convergence 2022
Differentiation of Injury-associated Macrophages in Lupus Kidneys Is Conserved in Humans and Lupus Mouse Models
Paul Hoover¹, David Lieb², Stephen Li², Chirag Raparia³, Accelerating Medicines Partnership SLE/RA⁴, Arnon Arazi⁵, Nir Hacohen² and Anne Davidson⁶, ¹Brigham and Women's Hospital, Boston, MA, ²Broad Institute, Cambridge, MA, ³Donald and Barbara Zucker School of Medicine At Hofstra/Northwell, Shoreham, NY, ⁴NIH, Bethesda, MD, ⁵Feinstein Institutes for Medical Research, Melrose, MA, ⁶Feinstein Institutes for Medical Research, Manhasset, NY
Background/Purpose: Infiltrating monocytes acquire functions that support kidney remodeling in response to tissue damage in lupus nephritis. This process of monocyte differentiation has been difficult…
Abstract Number: 0554 • ACR Convergence 2022
Loss of Synovial Tissue Macrophage Homeostasis Precedes Rheumatoid Arthritis Clinical Onset
Megan Hanlon¹, Mary Canavan², conor Smith³, Achilleas Floudas⁴, Nuno Neto⁵, Qingxuan Song⁶, Phil Gallagher⁷, Ronan Mullan⁸, Conor Hurson⁹, Barry Moran⁵, Michael Monaghan⁵, Sunil Nagpal¹⁰, Douglas Veale¹¹ and Ursula Fearon⁵, ¹Molecular Rheumatology, Dublin, Ireland, ²Trinity College, Dublin, Ireland, ³bTrinity College Dublin, Dublin, Ireland, ⁴Molecular Rheumatology Trinity Biomedical Sciences Institute, Dublin, Ireland, ⁵Trinity College Dublin, Dublin, Ireland, ⁶Janssen Research and Development, LLC, Spring House, PA, ⁷St Vincent's University Hospital, Dublin, Ireland, ⁸Tallaght University Hospital, Dublin, Ireland, ⁹St Vincents University Hospital, Dublin, Ireland, ¹⁰Janssen Research, Collegeville, PA, ¹¹St. Vincent's University Hospital, Blackrock, Dublin, Ireland
Background/Purpose: Synovial-tissue macrophages significantly contribute to Rheumatoid Arthritis, yet the precise nature/function of macrophage subsets within the inflamed joint remains unexplored. Here we explore the…
Abstract Number: 1681 • ACR Convergence 2022
Supernatants from Activated Macrophages Contain Citrullinated Vimentin and Induce Extracellular Matrix Deposition from Fibroblasts
nozima Aripova¹, Michael Duryee¹, Eric Daubach¹, carlos hunter¹, Bryant England¹, James O'Dell¹, Ted Mikuls² and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Studies have shown that activated macrophages secrete several factors that promote human fibroblast-like synoviocyte (HFLS) activation, resulting in an invasive phenotype, that contributes to…
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: 1682 • ACR Convergence 2022
Peptidyl Arginine Deiminase Expression and Macrophage Polarization Following Stimulation with Citrullinated and Malondialdehyde-acetaldehyde Modified Fibrinogen
nozima Aripova¹, Michael Duryee¹, carlos hunter¹, Bryant England¹, Debra Romberger¹, James O'Dell¹, Geoffrey Thiele¹ and Ted Mikuls², ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Post-translational modifications (PTM) of extracellular matrix proteins, such as fibrinogen, have been implicated in the pathogenesis of rheumatoid arthritis (RA). Citrullination, a type of…
Abstract Number: 0600 • ACR Convergence 2022
Correlates Between Rheumatoid Arthritis Clinical Factors and Synovial Cell Phenotypes: Data from the Accelerated Medicines Partnership
Dana Weisenfeld¹, Fan Zhang², Laura Donlin³, Anna Jonsson¹, William Apruzzese¹, Debbie Campbell⁴, Ellen Gravallese⁵, Larry Moreland⁶, Susan Goodman³, Michael Brenner⁵, Soumya Raychaudhuri¹, Andrew Filer⁷, Jennifer Anolik⁸, Vivian Bykerk³ and Katherine Liao¹, ¹Brigham and Women's Hospital, Boston, MA, ²University of Colorado, Aurora, CO, ³Hospital for Special Surgery, New York, NY, ⁴University of Rochester, Rochester, ⁵Brigham and Women's Hospital, Harvard Medical School, Boston, MA, ⁶University of Colorado, Denver, CO, ⁷University of Birmingham, Birmingham, United Kingdom, ⁸University of Rochester Medical Center, Rochester, NY
Background/Purpose: Prior studies have characterized the diverse cell types in the RA synovium through a multi-center consortium incorporating RNA-seq data. Due to the novelty of…
Abstract Number: 1683 • ACR Convergence 2022
Malondialdehyde-Acetaldehyde (MAA) Modified Matrix Gla Protein (MGP) Increases Citrullination by Human Macrophages
Spencer Jones¹, nozima Aripova¹, Michael Duryee¹, Austin Ragland¹, Bryant England¹, Ted Mikuls² and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Malondialdehyde and acetaldehyde, by-products of lipid peroxidation, react with free amino groups on proteins to form a stable post-translational modification (PTM), termed MAA. MAA…
Abstract Number: 0609 • ACR Convergence 2022
Macrophage Response to MAA Modified Fibrinogen in the Presence of Peptidyl Arginine Deiminase Inhibitor
nozima Aripova¹, Michael Duryee¹, carlos hunter¹, Geoffrey Thiele¹ and Ted Mikuls², ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: The formation of citrullinated (CIT) proteins is catalyzed by a calcium-dependent peptidyl arginine deiminase (PAD). In rheumatoid arthritis (RA), synovial macrophages are main contributors…

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