Abstracts tagged "macrophages"

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…
Abstract Number: 1722 • ACR Convergence 2023
Fate-mapping of Synovial Monocytes and Macrophages
Yidan Wang¹, Carla Cuda¹, Deborah Winter² and Harris Perlman¹, ¹Northwestern University, Chicago, IL, ²Northwestern University, Skokie, IL
Background/Purpose: Synovial monocytes and macrophages are heterogenous populations. These populations play diverse roles in the development of arthritis in humans and mice. In recent years,…
Abstract Number: 0270 • ACR Convergence 2023
Exploring the Potential of Oral Administration of 5-aminolevulinic Acid/sodium Ferrous Citrate in Adult-onset Still’s Disease: Preclinical Study in Mice and Pilot Investigation in Humans to Assess Efficacy and Safety
Tomohiro Koga¹, Remi Sumiyoshi¹, Yoshika Tsuji¹, Ken Kodama², Kaori Furukawa¹, Yushiro Endo¹ and Atsushi Kawakami³, ¹Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University, Nagasaki, Japan, ²Neophama Japan, Tokyo, Japan, ³Nagasaki University, Nagasaki, Japan
Background/Purpose: The primary objective of this study is to elucidate the therapeutic potential of 5-aminolevulinic acid/sodium ferrous citrate (5-ALA/SFC) in ameliorating the pathological manifestations associated…
Abstract Number: 1748 • ACR Convergence 2023
Macrophage Extracellular Traps Require Peptidylarginine Deiminase 2 and 4 and Are a Source of Citrullinated Antigens Bound by Rheumatoid Arthritis Autoantibodies
S Janna Bashar, Caitlyn Holmes and Miriam Shelef, University of Wisconsin, Madison, WI
Background/Purpose: Anti-citrullinated protein antibodies (ACPAs) are a hallmark of rheumatoid arthritis, but the sources of citrullinated antigens as well as which peptidylarginine deiminases (PADs) are…
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…
Abstract Number: 1981 • ACR Convergence 2022
Rho-GTPase Expression Recruits CD14+ Cells to Joints in Rheumatoid Arthritis and Predicts Good Response to JAK-inhibitor Treatment
Eric Malmhäll-Bah¹, Karin Andersson², Nina Oparina², Sofia Töyrä Silfverswärd³, Malin Erlandsson² and Maria Bokarewa³, ¹Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden, ²Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Goteborg, Sweden, ³Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
Background/Purpose: While examining arthritis development in GGTaseI-deficient mice, we found that hyperactive Rho-GTPases regulate the thymic egress of CD4+ T cells to the peripheral lymphoid…
Abstract Number: 0825 • ACR Convergence 2022
Predicting Outcomes in Macrophage Activation Syndrome (MAS): A Retrospective Study on 43 Consecutive Patients with MAS
Sumanth Madan¹, Suma Balan¹, MITHUN CHALAKKARAYIL BHAGAVALDAS², Spoorthy DR¹, Sudeep Rath¹, Joslyn Thattil¹, Amisha Shahul¹ and Niveditha Kartha¹, ¹Amrita Institute of Medical Sciences, Kochi, India, ²Amrita Institute of Medical Sciences, Muvattupuzha, India
Background/Purpose: Macrophage activation syndrome is a diagnosis along the spectrum of hemophagocytic lymphohistiocytosis (HLH) spectrum disorders. It is a rare, yet potentially fatal disease characterized…

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