Abstracts tagged "macrophages"

Abstract Number: 0893 • ACR Convergence 2025
Transcriptomic insights into GCA compared to clinically diverse controls: Inflammation, Aging, Therapeutic Targets and the role of SPP1 in the temporal artery
Ingrid Lindquist¹, Alisha Eskew², Dongsoek Choi³, David Wilson⁴, Diva Salomao⁵, Hillary Stiefel⁴, Daniel Albert⁴, Kiana Vakil-Gilani⁶, Daniela Ghetie⁷, James Rosenbaum⁸ and Marcia Friedman⁹, ¹Portland VA Medical Center, Portland, OR, ²OHSU, Portland, OR, ³OHSU, Portland, ⁴Casey Eye Institute OHSU, Portland, OR, ⁵Mayo Clinic, Rochester, MN, ⁶PeaceHealth, Portland, OR, ⁷OHSU, Lake Oswego, OR, ⁸Legacy Devers Eye Institute, Portland, OR, ⁹Immpact Bio, Beaverton, OR
Background/Purpose: Giant cell arteritis (GCA) is the most common vasculitis in people over 50 years old and is a clinical diagnosis bolstered by non-specific inflammatory…
Abstract Number: 1774 • ACR Convergence 2025
Citrullinated and Malondialdehyde-Acetaldehyde Co-Modified Fibrinogen Activates Macrophages and Induces Pro-Fibrotic shift in Coronary Endothelium Phenotype
Nozima Aripova¹, Wenxian Zhou², Hannah Johnson¹, Michael Duryee¹, Kimberley Sinanan¹, Carlos Hunter¹, Tate Johnson¹, Mabruka Alfaidi¹, Daniel Anderson³, Kishore Bidasee¹, Geoffrey Thiele¹ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE, ^30587964, Durham, NC
Background/Purpose: Rheumatoid arthritis (RA) patients are at increased risk for developing heart failure with preserved ejection fraction (HFpEF), which is characterized by impaired left ventricular…
Abstract Number: 0865 • ACR Convergence 2025
Spatial Transcriptomic Analysis of Calcinosis Cutis in Dermatomyositis Uncovers Disease-Associated Pathways Involving IL-6, Tissue Remodeling, and Osteopontin
Cassie Parks¹, York Wang¹, Lisa Christopher-Stine², Jemima Albayda², Joel Sunshine³, Shira Ziegler¹ and Chris Mecoli¹, ¹Johns Hopkins University School of Medicine, Baltimore, MD, ²Johns Hopkins University, Baltimore, MD, ³Johns Hopkins University School of Medicine, Baltimore
Background/Purpose: Calcinosis cutis affects up to 20% of adults with dermatomyositis (DM), causing significant morbidity including recurrent infections, incapacitating pain, and functional impairment. Current management…
Abstract Number: 1763 • ACR Convergence 2025
Spatial Organization and Function of Disease-Associated Macrophages in Lupus Nephritis: Insights from Cross-Species Analyses
Paul Hoover¹, Chirag Raparia², Rollin Leavitt³, Nir Hacohen⁴, Arnon Arazi⁵ and Anne Davidson², ¹Brigham and Women's Hospital, Boston, MA, ²Feinstein Institutes for Medical Research, Manhasset, NY, ³Broad Institute, Boston, MA, ⁴Broad Institute, Cambridge, MA, ⁵The Feinstein Institutes for Medical Research, Manhasset
Background/Purpose: Myeloid cells are linked to kidney injury in lupus nephritis (LN) but lack targeted therapies, underscoring the need to better understand myeloid biology in…
Abstract Number: 0812 • ACR Convergence 2025
Anti-CD206 CAR T Cell Immunotherapy Mitigates Dermal Pathology in Systemic Sclerosis
Chanhyuk Park¹, Helen Jarnagin², Asmaa Mohamed³, Noelle Kosarek⁴, Owen Wilkins¹, Fred Kolling¹, Yina Huang¹, Michael Whitfield⁵ and Patricia Pioli¹, ¹Geisel School of Medicine at Dartmouth, Lebanon, NH, ²Dartmouth College, Lebanon, NH, ³Geisel School of Medicine at Dartmouth, Charlottesville, VA, ⁴Dartmouth Geisel School of Medicine, Lebanon, NH, ⁵Geisel School of Medicine, Lebanon, NH
Background/Purpose: Systemic sclerosis (SSc) is a progressive, chronic multi-system disorder of unknown etiology that is characterized by immune dysfunction, fibrosis, and loss of dermal white…
Abstract Number: 1650 • ACR Convergence 2025
Malondialdehyde-Acetaldehyde and Citrulline Modified Proteins are Overexpressed in Cardiac Tissues in Rheumatoid Arthritis-Associated Heart Failure and Mediate Endothelial Cell Dysfunction
Hannah Johnson¹, Wenxian Zhou², Michael Duryee¹, Engle Sharp¹, Kimberley Sinanan¹, Carlos Hunter¹, Tate Johnson¹, Mabruka Alfaidi¹, Daniel Anderson³, Geoffrey Thiele¹ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE, ^30587964, Durham, NC
Background/Purpose: Previous reports show that malondialdehyde-acetaldehyde (MAA) adducts are overexpressed in RA, especially in joint/lung tissues, and that they colocalize with citrulline (CIT). This is…
Abstract Number: 0747 • ACR Convergence 2025
Patterns of Macrophage Polarization Induced by Serum from Patients with Giant Cell Arteritis and Takayasu’s Arteritis
Irene Carrión-Barberà¹, Ryan D. Stultz², David Cuthbertson³, Nader Khalidi⁴, Curry Koening⁵, Carol Langford⁶, Carol McAlear⁷, Paul Monach⁸, Larry Moreland⁹, Christian Pagnoux¹⁰, Philip Seo¹¹, Kenneth Warrington¹², Peter Merkel⁷ and Christian Lood¹³, ¹Department of Rheumatology. Hospital del Mar, Barcelona, Spain, ²University of Washington, Division of Rheumatology, Seattle, WA, ³University of South Florida, Tampa, ⁴Department of Medicine, McMaster University and St. Joseph’s Healthcare, Hamilton, Canada, ⁵University of Texas Dell Medical School, Austin, TX, ⁶Cleveland Clinic, Moreland Hills, OH, ⁷University of Pennsylvania, Philadelphia, PA, ⁸VA Boston Healthcare System, Boston, MA, ⁹University of Colorado, Denver, CO, ¹⁰Mount Sinai Hospital, University Health Network, Toronto, and Canadian Vasculitis Research Network (CanVasc), Toronto, ON, Canada, ¹¹Johns Hopkins University, Baltimore, MD, ¹²Mayo Clinic, ROCHESTER, MN, ¹³University of Washington, Division of Rheumatology, Seattle
Background/Purpose: Macrophages play a central role in the pathogenesis of large-vessel vasculitides, including giant cell arteritis (GCA) and Takayasu’s arteritis (TAK). Characterizing patterns of macrophage…
Abstract Number: 1174 • ACR Convergence 2025
High Prevalence of Autoimmunity in Rosai Dorfman Disease: A Multinational Study
Mitali Sen¹, Gordon Ruan², Samuel Reynolds³, Haadi Ali³, Xi Yang³, Diana Morlote¹, Aishwarya Ravindran¹, Lauren Shea¹, Matthew Koster⁴, Jithma Abeykoon², Hind Salama⁵, Xin-Xin Cao⁶, Asra Ahmed³, Ronald Go² and Gaurav Goyal¹, ¹University of Alabama at Birmingham, Birmingham, AL, ²Mayo Clinic, Rochester, ³University of Michigan, Michigan, ⁴Mayo Clinic, Rochester, MN, ⁵National Guard Health Affairs, Riyadh, Saudi Arabia, ⁶Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China (People's Republic)
Background/Purpose: Rosai-Dorfman Disease (RDD), formerly known as sinus histiocytosis with massive lymphadenopathy, was initially thought to be inflammatory or autoimmune in nature. The discovery of…
Abstract Number: 0080 • ACR Convergence 2025
The Role of DICAM in Modulating Macrophage Differentiation and Inflammatory Responses via αvβ3 Integrin Signaling in Rheumatoid Arthritis
Hanna Lee¹, Youn-Kwan Jung², Sang-il Lee³, Yun-Hong Cheon⁴ and Hyunjin Lim⁴, ¹Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University Hospital, Changwon, Changwon-si, Kyongsang-namdo, Republic of Korea, ²Institute of Medical Science, Gyeongsang National University, Jinju, Jinju, Kyongsang-namdo, Republic of Korea, ³Department of Internal Medicine and Institute of Medical Science, College of Medicine, Gyeongsang National University and Hospital, Jinju, Republic of Korea, ⁴Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Jinju, Kyongsang-namdo, Republic of Korea
Background/Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune disorder characterized by persistent joint inflammation, cartilage destruction, and bone erosion. Among the various immune cells involved…
Abstract Number: 1140 • ACR Convergence 2025
PGG Suppresses MSU Crystal–Triggered Inflammation and Arachidonic Acid Production in PBMCs
Sadiq Umar¹, Poorna Chandra Rao Yalagala², Sugasini Dhavamani² and Sriram Ravindran², ¹University of Illinois at Chicago, Chicago, IL, ²University of Illinois, Chicago, IL
Background/Purpose: Gout is the most prevalent inflammatory arthritis globally, with rising incidence in both developed and developing regions. It is driven by monosodium urate (MSU)…
Abstract Number: 0074 • ACR Convergence 2025
Rheumatoid Factors (RFs) in RA Patient Sera Do Not Bind To Fc-Free Certolizumab Pegol, But Do Bind To Fc-Containing Anti-TNF-α Biological DMARDs, Driving Immune Complex Formation and Cellular Clearance
Sophie Hopkin¹, Kathryn Malpas¹, David Kallenberg¹, Jacqueline O'Neill¹, Geofrey Odede¹, Kerry Tyson¹, Sue Cross¹, Tatiana SOKOLOVA², Bernard Lauwerys³, Baran Ufuktepe⁴, Patrick Durez⁵, Susanna Bidgood¹ and David Humphreys¹, ¹UCB Pharma, Slough, England, United Kingdom, ²Cliniques Universitaires Saint-Luc – Université catholique de Louvain (UCLouvain) – Institut de Recherche Expérimentale et Clinique (IREC), Rheumatology, Brussels, Brussels Hoofdstedelijk Gewest, Belgium, ³Systemic and Inflammatory Rheumatic Diseases Section, Institute of Experimental and Clinical Research (IREC), UCLouvain, Brussels, Belgium, ⁴UCB Pharma Istanbul, Turkey, istanbul, Turkey, ⁵Cliniques Universitaires Saint-Luc – Université catholique de Louvain (UCLouvain) – Institut de Recherche Expérimentale et Clinique (IREC), Rheumatologie, Brussels, Brussels Hoofdstedelijk Gewest, Belgium
Background/Purpose: RFs are polyclonal autoantibodies which bind the Fc domain of IgGs. Patients with RA and high RF levels experience reduced serum drug concentrations and…
Abstract Number: 2600 • ACR Convergence 2025
Deconstructing Lupus Nephritis Kidney Tissue at Single-Cell Resolution
Nicholas Sugiarto¹, Michelle Curtis², Siddarth Gurajala², Thomas Eisenhaure³, Qian Xiao⁴, Joseph Mears⁵, Arnon Arazi⁶, Paul Hoover⁷, Celine Berthier⁸, Saori Sakaue⁹, Andrea Fava¹⁰, David Hildeman¹¹, E. Steve Woodle¹², Brad Rovin¹³, Jennifer Barnas¹⁴, Maria Dall'Era¹⁵, Chaim Putterman¹⁶, Diane Kamen¹⁷, Maureen McMahon¹⁸, Jennifer Grossman¹⁹, Kenneth Kalunian²⁰, Jeffrey Hodgin²¹, Fernanda Payan Schober²², Mariko Ishimori²³, Michael Weisman²³, William Apruzzese²⁴, Joel Guthridge²⁵, Michael Brenner²⁶, Jennifer Anolik²⁷, David Wofsy²⁸, Judith James²⁵, Deepak Rao⁷, Anne Davidson²⁹, Michelle Petri³⁰, Jill Buyon³¹, Nir Hacohen³², Betty Diamond³³ and Soumya Raychaudhuri⁷, ¹Harvard Medical School, Brookline, MA, ²Harvard Medical School, Boston, ³Broad Institute, Cambridge, MA, ⁴Harvard Medical School, Boston, MA, ⁵Michigan University, Ann Arbor, MI, ⁶Feinstein Institutes for Medical Research, Acton, MA, ⁷Brigham and Women's Hospital, Boston, MA, ⁸University of Michigan, Ann Arbor, MI, ⁹University of Washington, Yokohama, Japan, ¹⁰Johns Hopkins University, Baltimore, MD, ¹¹Cincinnati Children's Hospital, Cincinnati, OH, ¹²UC Health, Cincinnati, ¹³The Ohio State University, Columbus, OH, ¹⁴University of Rochester, Rochester, NY, ¹⁵Division of Rheumatology, University of California, San Francisco, CA, ¹⁶Albert Einstein College of Medicine, Safed, Israel, ¹⁷Medical University of South Carolina, Johns Island, SC, ¹⁸UCLA David Geffen School of Medicine, Los Angeles, CA, ¹⁹UCLA, Sherman Oaks, CA, ²⁰UC San Diego, La Jolla, CA, ²¹University of Michigan, Ann Arbor, ²²TTUHSC, El Paso, TX, ²³Cedars-Sinai Medical Center, Los Angeles, CA, ²⁴Pfizer, Boston, ²⁵Oklahoma Medical Research Foundation, Oklahoma City, OK, ²⁶Brigham and Women's Hospital, Harvard Medical School, Newton, MA, ²⁷University of Rochester Medical Center, Rochester, NY, ²⁸University of California San Francisco, SF, CA, ²⁹Feinstein Institutes for Medical Research, Manhasset, NY, ³⁰Johns Hopkins University School of Medicine, Timonium, MD, ³¹NYU Grossman School of Medicine, New York, NY, ³²Broad Institute of MIT Harvard, Cambridge, MA, ³³The Feinstein Institutes for Medical Research, Manhasset, NY
Background/Purpose: Lupus nephritis (LN) is a heterogeneous disease driven by diverse immune and tissue cell types. We defined the cell states in the tissue and…
Abstract Number: 1141 • ACR Convergence 2025
Modulation of Inflammatory Responses by Dental Pulp Stem Cell Extracellular Vesicles in Monosodium Urate-Stimulated Macrophages
Sadiq Umar¹, Kasey Leung² and Sriram Ravindran², ¹University of Illinois at Chicago, Chicago, IL, ²University of Illinois, Chicago, IL
Background/Purpose: Gout is the most prevalent form of inflammatory arthritis, with rising global incidence. It results from the deposition of monosodium urate (MSU) crystals in…
Abstract Number: 0069 • ACR Convergence 2025
Spatial transcriptomics in rheumatoid arthritis (RA) synovium reveals distinct region-specific fibroblast functions
Camilla R.L. Machado¹, Mina Yao¹, David Boyle², Robert J. Benschop³, James T. Parker³, Wei Wang² and Gary Firestein¹, ¹University of California, San Diego, San Diego, CA, ²University of California, San Diego, San Diego, ³Eli Lilly, San Diego
Background/Purpose: RA synovium displays cellular heterogeneity, with gene expression driving disease pathogenesis. Unbiased cell-specific transcriptomes in RA synovium have previously relied primarily on disaggregated tissues…
Abstract Number: 2583 • ACR Convergence 2025
CCL20+ monocytes expanded by HLA-B*27 fuel Th17 generation in Axial Spondyloarthritis
Jinyi Zhao¹, Feng Liu², Hui Shi³, Liye Chen¹ and Paul Bowness⁴, ¹Botnar Research Center, University of Oxford, Oxford, United Kingdom, ²University of Oxford, Oxford, United Kingdom, ³Botnar Research Center, University of Oxford, Oxford, England, United Kingdom, ⁴NIHR Oxford Biomedical Research Centre, University of Oxford, NDORMS, Oxford, United Kingdom
Background/Purpose: Axial spondyloarthritis (AxSpA) is a chronic inflammatory arthritis characterized by monocyte activation and Th17 cell expansion. While HLA-B*27 is the strongest genetic risk factor…

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