Abstracts tagged "macrophages"

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…
Abstract Number: 1691 • ACR Convergence 2022
Pentagalloyl Glucose Inhibits MSU-Induced Inflammation via Transforming Growth Factor-β-Activated Kinase 1 (TAK1)
Paul Panipinto, Anil Singh, Farheen Sultan Shaikh and Salahuddin Ahmed, Washington State University, Spokane, WA
Background/Purpose: Gout disease flares occur when primed macrophages interact with and phagocytose monosodium urate crystals (MSU), activating IL-1β via the NLRP3 inflammasome. Abrogation of inflammasome…
Abstract Number: 0614 • ACR Convergence 2022
Post-translationally Modified Fibrinogen Activated Macrophages Drive the Expression of Fibrotic Genes in Rheumatoid Arthritis Fibroblast-Like Synoviocytes
nozima Aripova¹, Michael Duryee¹, carlos hunter¹, Eric Daubach¹, Evan Ryan¹, Geoffrey Thiele¹ and Ted Mikuls², ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Cellular interactions between synovial macrophages and human fibroblast-like synoviocytes (HFLS) contribute to articular inflammation and fibrosis in rheumatoid arthritis (RA), leading to subsequent joint…
Abstract Number: 1695 • ACR Convergence 2022
Dermatomyositis (DM) Macrophages Upregulate Genes Involved in the Remodeling of the Extracellular Matrix and Activate Keratinocytes in a Novel 3D Tissue Model of DM Skin Disease
Zoe Chafouleas¹, Angelique Cortez¹, James Whitley¹, Dorothea Barton¹, Lin Brown¹, Michael Whitfield², Patricia pioli³ and Sladjana Skopelja-Gardner¹, ¹Dartmouth Hitchcock Medical Center, Lebanon, NH, ²Dartmouth Geisel School of Medicine, Department of Biomedical Data Science, Lebanon, NH, ³Geisel School of Medicine at Dartmouth, Lebanon, NH
Background/Purpose: With an incidence of 10 cases per million and lack of animal or ex vivo disease models, dermatomyositis (DM) remains a debilitating disease without…
Abstract Number: 0630 • ACR Convergence 2022
Ferroptosis of CD163+ Tissue Infiltrating Macrophages in Lupus Nephritis
Qi Cheng, Huaxiang Wu and Yan Du, The Second Affiliated Hospital Of Zhejiang University School Of Medicine, Hangzhou, China
Background/Purpose: Lupus nephritis (LN) is one of the most common complications of systemic lupus erythematosus (SLE), with high morbidity and mortality. Despite a better understanding…
Abstract Number: 1730 • ACR Convergence 2022
T Cell-Macrophage Interactions Play a Critical Role in a Mouse Model of Histidyl-tRNA Synthetase-Induced Myositis
Daniel Reay¹, Ying Wang², Wael Jarjour³, Paula Clemens¹ and Dana Ascherman⁴, ¹University of Pittsburgh School of Medicine, Pittsburgh, PA, ²University of Miami Miller School of Medicine, Miami, FL, ³The Ohio State University, Columbus, OH, ⁴University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Histidyl-tRNA synthetase (HRS) is a key target of antigen-specific B and T cell responses in the anti-synthetase syndrome. Despite a clear role for aberrant…
Abstract Number: 0670 • ACR Convergence 2022
A Short Allelic Epitope Coded by HLA-DRB1*03:01 Activates a Systemic Lupus Erythematosus Cell Aberration Cascade
Bruna Miglioranza Scavuzzi¹, Bhavneet Kaur¹, Vincent Van Drongelen¹, Raquel Mesquita-Ferrari², Amr Sawalha³, Frederick Miller⁴ and Joseph Holoshitz¹, ¹University of Michigan, Ann Arbor, MI, ²Universidade Nove de Julho (UNINOVE), São Paulo, Brazil, ³University of Pittsburgh, Pittsburgh, PA, ⁴Environmental Autoimmunity Group, Clinical Research Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health, Bethesda, MD
Background/Purpose: Systemic lupus erythematosus (SLE) is an autoimmune disease resulting from an interaction of genetic, epigenetic, hormonal, environmental and immunoregulatory influences. It has been well…

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