Abstracts tagged "macrophages"

Abstract Number: 1702 • ACR Convergence 2024
Placental Developmental Defects in a Humanized-TLR8 Mouse Model of Spontaneous Anti-Phospholipid Antibody Induced Pregnancy Loss
Yunwei Xia¹, Naomi I. Maria², Zhengzi Yi³, Chirag Raparia⁴, Gayathri Konanur Gopikrishna¹, Weijia Zhang³ and Anne Davidson², ¹Feinstein Institutes for Medical Research, Manhasset, ²Feinstein Institutes for Medical Research, Manhasset, NY, ³Mt. Sinai School of Medicine, New York, NY, ⁴Donald and Barbara Zucker School of Medicine At Hofstra/Northwell, Shoreham, NY
Background/Purpose: Antiphospholipid antibodies (aPL) confer a high risk for adverse pregnancy outcomes, especially in women with SLE. aPLs can induce pro-inflammatory signaling via TLR8 receptors,…
Abstract Number: 0746 • ACR Convergence 2024
Single-cell RNA-Seq Analysis Reveals Distinct Compositional Characterizations and Transcriptomic Profiles of Macrophages in Takayasu’s Arteritis
Lihong du¹, Chenglong Fang², shang Gao³, zuoguan Chen³ and Yongjun Li³, ¹Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Beijing, China, ²Department of Rheumatology, Second Affiliated Hospital of Fujian Medical University, Quanzhou, China (People's Republic), ³Department of Vascular Surgery, Beijing Hospital, National Center of Gerontology, Beijing, China
Background/Purpose: Macrophages play key roles in the pathogenesis of various inflammatory vascular diseases, such as Takayasu’s arteritis (TAK) and atherosclerosis. However, limited data on the…
Abstract Number: 1793 • ACR Convergence 2024
SLE Patient Serum and SLE-associated Danger Signals Impair Efferocytosis in Human Macrophages
Jessica Shannon and Rafael de Queiroz Prado, AstraZeneca, Gaithersburg, MD
Background/Purpose: Efficient clearance of apoptotic cells, known as efferocytosis, plays a pivotal role in maintaining self-tolerance. Dysfunction in efferocytosis is implicated in the pathogenesis of…
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: 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…

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