Abstracts tagged "macrophages"

Abstract Number: 0888 • ACR Convergence 2024
Genetically Determined Peptidylglycine Alpha-amidating Monooxygenase (PAM) Mediated Amidation Regulates Tissue Damage by Rheumatoid Arthritis Synovial Fibroblasts
Kevin Sheridan¹, Emma Doris¹, Maria Pimenta¹, Jemma Falkov¹, Matthew Fisher², Munitta Muthana², Denis Shields¹, Richard Mains³, Betty Eipper³, Christopher Buckley⁴ and Anthony Wilson⁵, ¹University College Dublin, Dublin, Ireland, ²University of Sheffield, Sheffield, United Kingdom, ³University of Connecticut, Connecticut, ⁴University of Oxford, Oxford, United Kingdom, ⁵UCD, Dublin, Dublin, Ireland
Background/Purpose: The SNP rs26232 is associated with both risk and severity of rheumatoid arthritis (RA), with the C allele associated with the susceptibility to RA,…
Abstract Number: 1824 • ACR Convergence 2024
Skin Macrophage Subtypes and Impact of Tofacitinib in Early Diffuse Cutaneous Systemic Sclerosis: Results from Single-cell Analyses of an Observational Data Set and a Phase I/II Randomized Controlled Trial
Juliette Ferrant¹, Alain Lescoat², Valérie Lecureur³, Marie Lelong³, John Varga⁴, Robert Lafyatis⁵, Johann Gudjonsson⁴ and Dinesh Khanna⁴, ¹CHU Rennes, Rennes, France, ²CHU Rennes - University Rennes 1, Rennes, France, ³Rennes University, Rennes, France, ⁴University of Michigan, Ann Arbor, MI, ⁵University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Macrophages play a major role in dcSSc-related skin fibrosis, with a mixed M1-M2 activation profile relying on the activation of JAK/STAT. Tofacitinib, a pan-JAK…
Abstract Number: 0043 • ACR Convergence 2023
Assessing the Ability of Human Dental Pulp Stem Cells to Modulate the Macrophages Phenotype
Monia Maccaferri, Alessandra Pisciotta, Gianluca Carnevale, Carlo Salvarani and ELISA PIGNATTI, University of Modena and Reggio Emilia, Modena, Italy
Background/Purpose: Macrophages have been found to have a key role in Rheumatoid Arthritis. Depending on the microenvironment, macrophages exist in a dynamic functional state which…
Abstract Number: 0940 • ACR Convergence 2023
A Novel Therapeutic Opportunity in Systemic Sclerosis: The Fibrolytic Activities of a Specialized Macrophage Secretome
Françis Bonnefoy¹, Susanne Behlke² and Sylvain Perruche¹, ¹Univ. Bourgogne Franche-Comté, INSERM, EFS BFC, UMR1098, RIGHT Institute/MedINNPharma, Besançon, France, ²MedINNPharma, Besançon, France
Background/Purpose: Systemic sclerosis (SSc) a complex and rare immune-mediated connective tissue disorder characterized by microvascular damage, inflammatory cell infiltration, and excessive deposition of extracellular matrix…
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: 0057 • ACR Convergence 2023
GM-CSF receptor/SYK/JNK/FOXO1/CD11c Signaling Enhances Cell Migration to Promote Atherosclerosis
Daisuke Tsukui¹, Kimura Yoshitaka¹ and Hajime Kono², ¹Teikyo University School of Medicine, Itabashi-ku, Japan, ²Teikyo University School of Medicine, Tokyo, Japan
Background/Purpose: Atherosclerosis involves both dyslipidemia and chronic inflammatory disease; however, lipid-lowering agents do not completely eliminate the risks of cardiovascular events. In addition, chronic systemic…
Abstract Number: 1589 • ACR Convergence 2023
Epigenetic Regulation of DNMT3A by TFEB and DOT1L Through AMPK Signalling Orchestrates the Lysosomal Response of Macrophages During Gout and Clonal Hematopoiesis
Isidoro Cobo¹, Jessica Murillo-Saich², Mohnish Alishala¹, Stephen Calderon¹, Roxana Coras³, Nathanael Spann¹, Anyan Cheng⁴, Thomas Prohaska¹, Babak Razani⁵, Robert Terkeltaub¹, Benjamin Ebert⁶, Ru Liu Bryan⁷, Monica Guma⁸ and Christopher glass¹, ¹University of California San Diego, San Diego, CA, ²Department of Medicine, University of California San Diego, La Jolla, CA, ³Cedars-Sinai Medical Center, Los Angeles, CA, ⁴University of California San Diego, San Francisco, CA, ⁵Universit of Pittsburgh, Pittsburgh, PA, ⁶Dana-Farber Cancer Institute, Boston, MA, ⁷UCSD and VASDHS, San Diego, CA, ⁸San Diego VA Healthcare Service, La Jolla, CA
Background/Purpose: Gout is the most common form of inflammatory arthritis worldwide, which is characterised by the deposition of monosodium urate crystals (MSUc) in the joints…
Abstract Number: 0058 • ACR Convergence 2023
Macrophage Extracellular Traps Induced by Monosodium Urate or Calcium Pyrophosphate Crystals Form Independently of NLRP3 Inflammasome Activation
Douglas Daoudlarian¹, André Tiaden², Stavros Giaglis³, Ulrich Walker⁴, Petr Broz⁵, Tobias Maningold⁶ and Diego Kyburz¹, ¹University Hospital Basel, Basel, Switzerland, ²Laboratory for Experimental Rheumatology, Department of Biomedicine, University of Basel, Basel, Switzerland, ³University of Basel/University Hospital of Basel, Basel, Switzerland, ⁴Basel University Hospital, Basel, Switzerland, ⁵University of Lausanne, Lausanne, Switzerland, ⁶Department of Rheumatology, University Hospital Bern (Inselspital), University Bern, Bern, Switzerland
Background/Purpose: Monosodium urate (MSU) and calcium pyrophosphate (CPP) crystals are potent inducers of inflammation by activation of the inflammasome in neutrophils phagocytosing the crystals and…
Abstract Number: 1679 • ACR Convergence 2023
Effects of Janus Kinase Inhibitor on TNF-a and IL-6-Induced Osteoclasts and RANKL-Induced Osteoclasts in Peripheral Blood Monocytes from Patients with Rheumatoid Arthritis
Kazuhiro Yokota¹, Yoshimi Aizaki², Takuma Tsuzuki Wada¹, Hiroshi Kajiyama¹, Yasuto Araki², Hiroaki Yazawa², Yuji Akiyama² and Toshihide Mimura¹, ¹Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Iruma-gun, Japan, ²Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
Background/Purpose: We have previously demonstrated that a combination of TNF-a and IL-6 induces mouse osteoclast-like cells with bone resorption activity both in vitro and in…
Abstract Number: 0063 • ACR Convergence 2023
Investigating Macrophage Repopulation in the Synovium
Jessica Maciuch¹, Yidan Wang², Slim Fourati¹, Harris Perlman¹ and Deborah Winter³, ¹Northwestern University, Chicago, IL, ²Northwestern University, Hanover Park, IL, ³Northwestern University, Skokie, IL
Background/Purpose: Rheumatoid Arthritis (RA) is an autoimmune disease characterized by chronic inflammation of the joints. Macrophages are a key mediator of pro-inflammatory signaling, contributing to…

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