Abstracts tagged "macrophages"

Abstract Number: 0757 • ACR Convergence 2024
Regulation of Macrophage Differentiation by Serum Adiponectin: A Novel Mechanism to Increase Alternatively Activated Macrophages During the Remission Phase of Giant Cell Arteritis
Anna Kernder¹, Lena Noack¹, Adina Morar¹, Lara Burg², Torsten Lowin¹, Dennis Bleck¹, matthias schneider¹, Jörg Distler³, Georg Pongratz⁴ and Valentin S. Schäfer⁵, ¹Clinic for Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine-University, Düsseldorf, Germany., Düsseldorf, Germany, ²Department of Rheumatology and Clinical Immunology, Clinic of Internal Medicine III, University Hospital of Bonn, Germany, Bonn, Germany, ³Universitätsklinikum Düsseldorf and Heinrich-Heine-Universität Düsseldorf, Duesseldorf, Germany, ⁴Clinic for Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine-University, Düsseldorf, Germany., Regensburg, Germany, ⁵University Hospital Bonn, Bonn, Germany
Background/Purpose: The immunopathogenesis of giant cell arteritis (GCA) remains unclear. It is known that monocytes are recruited from peripheral blood, infiltrate the vessel wall, and…
Abstract Number: 1814 • ACR Convergence 2024
Understanding Monocyte Derived Macrophages in the Skin of SSc Patients Through Single Cell Analysis of Blister Fluid Immune Cell Populations
Sandra Lopez Garces¹, Tamara Searle², Siyu Zhang¹, Henry Lopez³, Isra Elhussin⁴, Clayton Yates⁴, David Abraham⁵, Christopher Denton⁶, Bahja Ahmed Abdi¹ and Richard Stratton⁷, ¹University College London, London, United Kingdom, ²Imperial College London, London, United Kingdom, ³Riptide Bioscience Inc, Bethesda, MD, ⁴Johns Hopkins University, Baltimore, MD, ⁵UCL, London, United Kingdom, ⁶University College London, Northwood, United Kingdom, ⁷UCL, London, England, United Kingdom
Background/Purpose: Cells of the monocyte-macrophages (Mφ) are key players in the pathogenesis of systemic sclerosis (SSc), contributing to inflammation and fibrosis. To advance beyond the…
Abstract Number: 0759 • ACR Convergence 2024
Macrophage-Lineage Cells in Giant Cell Arteritis Express MMP12, Phagocytosis and Osteoclast-associated Molecules That May Contribute to Destruction of the Tunica Media
Makoto Sugihara¹, Nobumasa Watanabe², Yuichiro Hara², Yasumasa Nishito³, Mai Kounoe⁴, Kazunari Sekiyama⁴, Eisuke Takamasu⁵, Naofumi Chinen⁶, Kota Shimada⁵ and Hideya Kawaji², ¹Department of Rheumatic Diseases, Tokyo Metropolitan Tama-Hokubu Medical Center, Tokyo, Japan, Higashimurayama-shi, Tokyo, Japan, ²Research Center for Genome & Medical Sciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan, Setagaya-ku, Tokyo, Japan, ³Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan, Setagaya-ku, Tokyo, Japan, ⁴Center for Medical Research Cooperation, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan, Setagaya-ku, Tokyo, Japan, ⁵Department of Rheumatic Diseases, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan, Fuchu-shi, Tokyo, Japan, ⁶Department of Rheumatic Diseases, Tokyo Metropolitan Tama-Nambu Chiiki Hospital, Tokyo, Japan, Tama-shi, Tokyo, Japan
Background/Purpose: Giant cell arteritis (GCA) is a large vessel vasculitis characterized by inflammatory cell infiltration and destruction of the tunica media. In this study, we…
Abstract Number: 1816 • ACR Convergence 2024
Paracrine WNT Signaling Drives Pro-fibrotic Metabolic Activation of Systemic Sclerosis Macrophages
Emily Morris¹, Helen Jarnagin², Heetaek Yang³, Alexandra Turnquist², Michael Whitfield⁴ and Patricia Pioli⁵, ¹Dartmouth College, Enfield, NH, ²Dartmouth College, Lebanon, NH, ³Dartmouth College, West Lebanon, NH, ⁴Geisel School of Medicine at Dartmouth, Hanover, NH, ⁵Geisel School of Medicine at Dartmouth, Lebanon, NH
Background/Purpose: While we have shown that systemic sclerosis (SSc) dermal fibroblasts and macrophages (MØs) engage in reciprocal activation mediated by exosomes via paracrine signaling, the…
Abstract Number: 0760 • ACR Convergence 2024
A Macrophage-smooth Muscle Cell Axis Influences Vascular Remodeling Through Activation of the EGFR Pathway in Giant Cell Arteritis
Kevin Chevalier¹, Léa Dionet¹, Paul Breillat¹, Margot Poux¹, Julien Dang¹, Benoit Terris², Patrick Bruneval³, Luc Mouthon⁴, Olivia Lenoir¹, Tharaux Pierre-Louis¹ and Benjamin Terrier⁵, ¹Paris Cardiovascular Research Center, INSERM U970, Paris, France, ²Department of pathology, Hôpital Cochin, GHU Paris Centre, AP-HP, Université Paris Cité,, Paris, France, ³Department of Pathology, Hôpital Européen Georges Pompidou, GHU Paris Centre, AP-HP, Université Paris Cité, Paris, France, ⁴Service de Médecine Interne, Centre de Référence Maladies Systémiques Autoimmunes et Autoinflammatoires Rares d'Ile de France de l’Est et de l’Ouest, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France, ⁵Service de Médecine interne, Hôpital Cochin, AP-HP, Paris, Ile-de-France, France
Background/Purpose: Giant cell arteritis (GCA) is a granulomatous vasculitis affecting large vessels. The role of macrophages and vascular smooth muscle cells (VSMC) appears to be…
Abstract Number: 1817 • ACR Convergence 2024
Activated Macrophages Mediate Loss of Dermal White Adipose Tissue in Fibrotic Skin
Chanhyuk Park¹, Helen Jarnagin², Asmaa Mohamed³, Yina Huang³, Michael Whitfield⁴ and Patricia Pioli¹, ¹Geisel School of Medicine at Dartmouth, Lebanon, NH, ²Dartmouth College, Lebanon, NH, ³Dartmouth, Lebanon, ⁴Geisel 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: 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: 0036 • ACR Convergence 2024
Deep Topic Modeling Deconvolves Cell States in Spatial Transcriptomic Profiles of Rheumatoid Arthritis Synovial Tissue
Preethi Periyakoil¹, Melanie Smith², Meghana Kshirsagar³, Daniel Ramirez⁴, Edward Dicarlo⁵, Susan Goodman⁶, Laura Donlin² and Christina Leslie⁷, ¹Weill Cornell Medical College, New York, NY, ²Hospital for Special Surgery, New York, NY, ³Microsoft AI for Good, Seattle, ⁴Hospital for Special Surgery, Cartago, Costa Rica, ⁵Hospital for Special Surgery, Weill Cornell Medicine, New York, NY, ⁶Hospital for Special Surgery, New York 10025, NY, ⁷Memorial Sloan Kettering Cancer Center, New York, NY
Background/Purpose: Recent single-cell RNA sequencing (scRNA-seq) studies of the rheumatoid arthritis (RA) synovium have highlighted the heterogeneity of cell states present during active disease. It…
Abstract Number: 0920 • ACR Convergence 2024
TGF-β Activated Kinase 1 Inhibition by Pentagalloyl Glucose Inhibits NLRP3 Inflammasome Formation and Ameliorates MSU-Induced Inflammation
Paul Panipinto¹ and Salahuddin Ahmed², ¹Washington State University College of Pharmaceutical Science and Molecular Medicine, Spokane, WA, ²Washington State University, Spokane, WA
Background/Purpose: Monosodium urate (MSU)-induced inflammation is caused by the deposition of MSU crystals in the joints and periarticular tissues under conditions of hyperuricemia. These deposits…
Abstract Number: 2086 • ACR Convergence 2024
Specific Transcriptomic Profile Associated with Disease Activity in Muscle Biopsies from Patients with Sarcoid Myopathy
Iago Pinal-Fernandez¹, Nikolas Ruffer², Maria Casal-Dominguez³, katherine Pak⁴, Stefania Dell'Orso⁵, Faiza Naz⁵, Shamima Islam⁶, Gusatavo Gutierrez-Cruz⁶, Margherita Milone⁷, Albert selva-O'Callaghan⁸, jose milisenda⁹, Felix Kleefeld¹⁰, Andrew Mammen⁶, Teerin Liewluck¹¹ and Werner Stenzel¹², ¹NIAMS/National Institutes of Health, Bethesda, MD, ²Klinikum Bad Bramstedt, Hamburg, Germany, ³NIAMS, NIH, Bethesda, MD, ⁴National Institutes of Health, Bethesda, MD, ⁵National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, Bethesda, MD, ⁶NIH, Bethesda, MD, ⁷Mayo Clinic-Rochester, Rochester, MN, ⁸Systemic Autoimmune Disease Section, Vall d’Hebron Institute of Research, Barcelona, Spain, ⁹Hospital Clinic de Barcelona, Barcelona, Spain, ¹⁰Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt Universität zu Berlin, and Berlin Institute of Health (BIH), Berlin, Germany, Berlin, Germany, ¹¹Mayo Clinic, Rochester, MN, ¹²Charite University, Berlin, Germany
Background/Purpose: Sarcoidosis, a multisystem inflammatory disorder of unknown etiology, exhibits diverse clinical manifestations, with symptomatic musculoskeletal involvement being relatively uncommon but potentially debilitating. We conducted…
Abstract Number: 0041 • ACR Convergence 2024
Disease Activity and Serological Inflammatory Markers Are Associated with TNF-a and IL-6-Induced Osteoclasts, but Not with RANKL-Induced Osteoclasts in Peripheral Blood Monocytes from Patients with Rheumatoid Arthritis
Yokota Kazuhiro¹, Yoshimi Aizaki¹, Miyoko Sekikawa², Hiroshi Kajiyama¹, Yasuto Araki¹, Yuho Kadono², Yuji Akiyama¹ and Toshihide Mimura¹, ¹Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Saitama, Japan, Iruma-gun, Saitama, Japan, ²Department of Orthopaedic Surgery, Saitama Medical University, Saitama, Japan, Iruma-gun, Saitama, Japan
Background/Purpose: We previously reported that a combination of TNF-α and IL-6 induces mouse osteoclast (OC)-like cells and human OCs with bone resorption activity [Arthritis &…
Abstract Number: 0926 • ACR Convergence 2024
Macrophages and Nociceptor Neurons Form a Sentinel Unit Around Fenestrated Capillaries to Defend the Synovium from Systemic Challenges
Tetsuo Hasegawa and Menna Clatworthy, University of Cambridge, Cambridge, United Kingdom
Background/Purpose: A wide variety of systemic pathologies, including infectious and autoimmune diseases, are accompanied by joint pain or inflammation, often mediated by circulating immune complexes…
Abstract Number: 2506 • ACR Convergence 2024
THP1-derived Macrophage Polarization in Takayasu Arteritis – Impact of Disease Status and Therapy
João Paulo dos Santos¹, Cristina Orikaza¹, Mariana Aguiar², Gerson Keppeke³ and Alexandre de Souza⁴, ¹Universidade Federal de Sao Paulo, São Paulo, SP, Brazil, ²Rheumatology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil, ³Universidad Catolica del Norte, São Paulo, Coquimbo, Brazil, ⁴UNIFESP-EPM, São Paulo, SP, Brazil
Background/Purpose: Macrophages play an important role in the pathophysiology of Takayasu arteritis (TAK) as granulomatous inflammation is typically found in affected arteries. The expression of…
Abstract Number: 0042 • ACR Convergence 2024
Modulating Inflammation and Angiogenesis in an Advanced 3D Rheumatoid Arthritis Synovial Tissue Model
Eva Philippon¹, Jan Piet van Hamburg¹, Lisanne van Rooijen¹, Gary Sims², Conny Van der Laken³ and Sander Tas⁴, ¹Amsterdam UMC, Amsterdam, Netherlands, ²Immunology Biosciences, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, ³Amsterdam UMC - location VUMC, Amsterdam, Netherlands, ⁴Amsterdam UMC, locatie AMC, Amsterdam, Netherlands
Background/Purpose: Rheumatoid Arthritis (RA) is a progressive and systemic autoimmune disorder characterized by chronic and destructive joint inflammation. Key features of RA include synovial cell…

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