Abstracts tagged "macrophages"

Abstract Number: 0263 • ACR Convergence 2024
Characteristics and Coinfections of Diffuse Alveolar Hemorrhage in Rheumatic Patients
Eduardo Briones-García¹, Shaul Navarro-Lara², Marco A Ortiz-Bustamante², Iris Paola García Herrera³, Carla M Roman-Montes² and Guillermo A Guaracha-Basañez⁴, ¹Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán. Immunology and Rheumatology Department., Ciudad de México, Distrito Federal, Mexico, ²Departamento de Infectología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador-Zubirán., México city, Mexico, ³Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico, ⁴Instituto Nacional de Ciencias Medicas y Nutricion “Salvador Zubirán”, Mexico City, Distrito Federal, Mexico
Background/Purpose: Diffuse alveolar hemorrhage (DAH) is a severe respiratory complication observed in certain rheumatic diseases, such as systemic lupus erythematosus (SLE), ANCA-associated vasculitides (AAV), and…
Abstract Number: 1686 • ACR Convergence 2024
Urine Proteomics in Class II Lupus Nephritis Reveals Immune Activation and Pro-Fibrotic Signatures
Jasmine Shwetar¹, Jill Buyon², Michelle Petri³, Kelly Ruggles⁴ and Andrea Fava⁵, ¹New York School of Medicine, Ann Arbor, MI, ²NYU Grossman School of Medicine, New York, NY, ³Johns Hopkins University School of Medicine, Timonium, MD, ⁴NYU Grossman School of Medicine, Brooklyn, NY, ⁵Johns Hopkins University, Baltimore, MD
Background/Purpose: Lupus nephritis (LN) is a pathologically diverse autoimmune disease that can lead to end-stage kidney disease and mortality. Although Class II LN is considered…
Abstract Number: 0279 • ACR Convergence 2024
Macrophage Intracellular Fates of Monosodium Urate and Calcium Pyrophosphate Crystals: Phagocytosis, Exchanged/expulsion and Dissolution of Crystals
Charles Leroy¹, Nghia Pham², François Brial³, Brenda Kischkel⁴, gwénaêlle Jayat⁵, Elena Ishow⁶, Christèle Combes⁷, Leo Joosten⁴, Augustin Latourte⁸, Pascal Richette⁹ and Hang-Korng Ea¹⁰, ¹Inserm 1132 / Université Paris Cité, levallois-perret, France, ²INSERM 1132, BIOSCAR, Lariboisière hospital, Paris, France, ³Inserm 1132/ Université Paris Cité, Paris, France, ⁴Radboudumc, Nijmegen, Netherlands, ⁵Université Paris cité / Inserm 1132, paris, France, ⁶Université de Nantes / Ceisam, Nantes, France, ⁷INP-ENSIACET, Toulouse, France, ⁸AP-HP, Paris, France, ⁹Lariboisière Hospital, Paris, France, ¹⁰Université Paris Cité, INSERM UMR 1132 BIOSCAR, Paris, France
Background/Purpose: Gout, due to the presence of monosodium urate crystals (MSU) and calcium pyrophosphate (CPP) crystal deposition disease are both responsible for recurrent inflammation flares.…
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: 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…

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