Abstracts tagged "Fibroblasts, Synovial"

Abstract Number: LB05 • ACR Convergence 2025
ER Stress-Induced ATP2A3 Drives Rheumatoid Arthritis via Activation of STING Signaling
yujie cai, Nanfang hospital, Guangzhou, China (People's Republic)
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease characterized by persistent synovial inflammation and joint bone destruction. Endoplasmic reticulum (ER) stress plays an important role…
Abstract Number: 1757 • ACR Convergence 2025
Skin-to-Joint Immune Cell Migration and Synovial Reprogramming in Psoriatic Arthritis Onset
Maria Gabriella Raimondo¹, Hashem Mohammadian², Mario Angeli², Vladyslav Fedorchenko², Kaiyue Huang³, Yi-Nan Li⁴, Raphael Micheroli⁵, Jörg Distler⁶, Ursula Fearon⁷, Juergen Rech², Francesco Ciccia⁸, Juan Cañete⁹, Adam Croft¹⁰, Mariola Kurowska-Stolarska¹¹, Stefano Alivernini¹², Maria Antonietta D'Agostino¹³, Georg Schett², Simon Rauber¹⁴ and Andreas Ramming¹⁵, ¹Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ²Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ³Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, ⁴University Hospital of Düsseldorf, Düsseldorf, Germany, ⁵University Hospital Zurich, Zurich, Switzerland, ⁶University Hospital Duesseldorf and HHU, Duesseldorf, Germany, ⁷Trinity College Dublin, Dublin, Dublin, Ireland, ⁸Rheumatology Section, University of Campania L. Vanvitelli, Naples, Italy, Naples, Italy, ⁹Rheumatology Department, Hospital Clínic and IDIBAPS, Barcelona, Spain, Barcelona, Spain, ¹⁰University of Birmingham, Hagley, Stourbridge, United Kingdom, ¹¹University of Glasgow, Glasgow, ¹²Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy, ¹³Division of Rheumatology and Clinical Immunology - Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy, ¹⁴Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Bayern, Germany, ¹⁵Department of Internal Medicine ³, Rheumatology & Immunology, Friedrich-Alexander-University (FAU) & Universitätsklinikum Erlangen, Erlangen, Germany
Background/Purpose: Psoriatic arthritis (PsA) develops in about 30% of individuals with psoriasis (PsO), highlighting a critical connection between skin and joint inflammation. However, the mechanisms…
Abstract Number: 0068 • ACR Convergence 2025
Unique Fibroblast-like Synoviocyte Phenotype with Elevated MCSF Expression Induced by TLR5 Activation in Rheumatoid Arthritis
Aryan Patel¹, Osama Al Zoubi² and Shiva Shahrara³, ¹University of Illinois at Chicago, Chicago, ²University of Illinois at Chicago, Chicago, IL, ³University of Illinois, Chicago, IL
Background/Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune disease affecting approximately 1% of the global population, causing significant morbidity and disability. Fibroblast-like synoviocytes (FLS) are…
Abstract Number: 1150 • ACR Convergence 2025
Impact of IL-17A on synovial fibroblast from subacromial bursae
Andre Ramon¹, Hélène Greigert², baptiste lamarthée³, Corentin Richard⁴, claudie Cladière³, Noemie Klopfenstein³, Ludovic Labattut⁵, Alice Bordet⁵, Sylvain Audia⁶, Romain boidot⁴, jean-francis Maillefert¹, Bernard Bonnotte⁷ and Maxime Samson⁸, ¹Rheumatology, Université Bourgogne Europe, CHU Dijon Bourgogne, Dijon, France, ²Vascular Medicine, Université Bourgogne Europe, CHU Dijon Bourgogne, Dijon, France, ³Marie et Louis Pasteur University, EFS, INSERM, UMR RIGHT, Besançon, France, Dijon, France, ⁴Molecular Biology Unit, Georges-François Leclerc Cancer Center, UNICANCER, Dijon, France, Dijon, France, ⁵Orthopedic Surgery, Université Bourgogne Europe, CHU Dijon Bourgogne, Dijon, France, ⁶Internal Medicine and Clinical Immunology, Université Bourgogne Europe, CHU Dijon Bourgogne, Dijon, France, ⁷Internal medicine and clinical immunology, Université Bourgogne Europe , CHU Dijon Bourgogne, Dijon, France, ⁸CHU Dijon Bourgogne, Dijon, France
Background/Purpose: Polymyalgia rheumatica (PMR) is characterized by increases in serum IL-6 and the proportion of Th17 cells in circulating blood. During PMR, IL-6 may originate…
Abstract Number: 0063 • ACR Convergence 2025
Effect of alpha-ketoglutarate on Synovial Fibroblasts-Mediated Inflammation in Arthritis
Surabhi Gautam, Vinay Devulapalli, Akash Sathiyamurthi, Jayla Whittaker and Pallavi Bhattaram, Emory University, Atlanta, GA
Background/Purpose: Rheumatoid arthritis (RA) and related autoimmune joint disease patients exhibit cyclic episodes of resolution and exacerbation of joint inflammation, referred to as flares. Fibroblast-like…
Abstract Number: 1005 • ACR Convergence 2025
CD49a Contributes to Binding and Survival of Synovial Resident Memory T cells
Yusuke Miyashita¹, Yang Yang², Madison Mangin³, Maryrose Hahn² and Margaret Chang², ¹Boston Children's Hospital, Brookline, MA, ²Boston Children's Hospital, Boston, MA, ³Boston Children's Hospital, St Simons Island, GA
Background/Purpose: Rheumatoid arthritis (RA) is a systemic autoimmune disease featured with recurrent inflammation in the same joints, a characteristic termed joint-specific memory. We previously demonstrated…
Abstract Number: 0061 • ACR Convergence 2025
IL-22 Contributes to Autoantibody-induced Arthritis Via Modulation of Inflammatory Cytokine and Chemokine Expression in the Inflamed Synovium of a Murine Model
Shinjiro Kaieda¹, Suzuna Sugi¹, Takuma Koga², Takashi Kinoshita¹ and Tomoaki Hoshino¹, ¹Kurume university School of Medicine, Kurume, Japan, ²Kurume Universty School of Medicine, Kurume, Japan
Background/Purpose: IL-22 is a key cytokine involved in modulating tissue responses during inflammation and is markedly upregulated in inflammatory diseases, such as psoriasis, inflammatory bowel…
Abstract Number: 0995 • ACR Convergence 2025
Resident Memory T Cells Stimulate Pathogenic Activity in Fibroblast-like Synoviocytes
Madison Mangin¹, Yang Yang², Yusuke Miyashita² and Margaret Chang², ¹Boston Children's Hospital, St Simons Island, GA, ²Boston Children's Hospital, Boston, MA
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease characterized by joint specific memory. We previously demonstrated that joint-specific memory is mediated by CD8+ synovial resident…
Abstract Number: 0978 • ACR Convergence 2025
IL-17A+ HLA-DR-CCR6+ regulatory T cells: Dual role in T cell suppression and synovial inflammation in arthritis.
Bennie Heeswijk¹, Margot Bongenaar¹, Nadine Davelaar¹, Pascal de Jong¹, Hannah den Braanker¹, Radboud Dolhain¹ and Erik Lubberts², ¹Erasmus University Medical Center, Rotterdam, the Netherlands, Rotterdam, Netherlands, ²Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
Background/Purpose: Regulatory T cells (Tregs) are essential for maintaining immune tolerance and limiting excessive immune responses. However, Tregs show high levels of heterogeneity and plasticity,…
Abstract Number: 0919 • ACR Convergence 2025
Proteomic Profiling of Extracellular Vesicles from Synovial Fluid of RA and OA Patients Reveals Cell-type-specific subpopulations and Disease Related Patterns
Stefanie Kurth¹, Andre Tiaden¹, Edveena Hanser¹, Simone Häner¹, Stavros Giaglis¹, Florian Geier¹, Dominik Burri¹, Katarzyna Buczak¹, Ute Heider², Stefan Wild², Yves Acklin¹, Christian Egloff¹ and Diego Kyburz³, ¹University of Basel, Basel, Switzerland, ²Miltenyi Biotec, Bergisch-Gladbach, Germany, ³University Hospital Basel, Basel, Switzerland
Background/Purpose: Extracellular vesicles (EVs) are secreted by virtually all cells and are known to carry bioactive cargo including proteins, RNA, DNA and metabolites. Analysis of…
Abstract Number: 0807 • ACR Convergence 2025
Deciphering Synovitis in Systemic Sclerosis
Celina Geiss¹, Miranda Houtman¹, Camino Calvo Cebrian¹, Raphael Micheroli², Melpomeni Toitou¹, Yannis Djeffal³, Alexandra Khmelevskaya¹, Mojca Frank-Bertoncelj¹, Sam Edalat¹, Thomas Rauer⁴, Kristina Bürki⁵, Chantal Pauli⁶, Michael Bonelli⁷, Thomas Karonitsch⁸, Oliver Distler⁹, Caroline Ospelt¹ and Muriel Elhai¹⁰, ¹Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Zurich, Switzerland, ²University Hospital Zurich, Zurich, Switzerland, ³INSERM, IMRB, Université Paris Est Créteil, Paris, France, ⁴³Department of Traumatology, University Hospital Zurich, University of Zurich, Zurich, Zurich, Switzerland, ⁵Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, the LOOP Zurich, Zurich, Switzerland, ⁶Institute for Pathology and Molecular Pathology, University Hospital Zurich, University of Zurich, Zurich, Zurich, Switzerland, ⁷Department of Medicine III, Division of Rheumatology, Medical University Vienna, Vienna, Wien, Austria, ⁸Department of Medicine III, Division of Rheumatology, Medical University Vienna, Vienna, Austria, ⁹Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland, Zurich, Switzerland, ¹⁰University Hospital zurich, Zürich, Switzerland
Background/Purpose: Synovitis is a common manifestation of systemic sclerosis (SSc), driving disability and predicting disease progression and mortality. Current immunosuppressive strategies, largely extrapolated from rheumatoid…
Abstract Number: 0799 • ACR Convergence 2025
Citrullination of neutrophil serine proteases enhances proteolytic activity, stability and autoantigenicity in Rheumatoid Arthritis
Mario Navarrete Lagos, Ramiza Zaman, Jun Kim, Jeba Atkia Maisha, Hani El-Gabalawy and Liam O'Neil, University of Manitoba, Winnipeg, MB, Canada
Background/Purpose: In Rheumatoid Arthritis (RA), autoantibodies develop against endogenous proteins containing the amino acid citrulline, which results from a post-translational modification of arginine catalyzed by…
Abstract Number: 0797 • ACR Convergence 2025
Spatial transcriptomics identifies density-sensing fibroblasts in synovial lining
Sonia Presti¹, Kseniia Anufrieva², Ce Gao³, Sean Prell², Philip Blazar², Jeffrey Lange², Morgan Jones², Mihir Wechalekar⁴, Michael Brenner², Ilya Korsunsky⁵, Shideh Kazerounian² and Kevin Wei⁶, ¹Standford University, Stanford, ²Mass General Brigham, Boston, ³Division of Rheumatology, Inflammation and Immunity, DOM, BWH; Harvard Medical School, Boston, MA, ⁴Flinders Medical Centre, Adelaide, Australia, ⁵Division of Rheumatology, Inflammation and Immunity, DOM, BWH; Division of Genetics, DOM, BWH; Harvard Medical School, Boston, MA, ⁶Brigham and Women's Hospital at Harvard Medical School, Boston, MA
Background/Purpose: The synovial lining is crucial for joint homeostasis, forming a barrier and producing lubricants through specialized fibroblasts. These fibroblasts differ from sublining fibroblasts, which…
Abstract Number: 0798 • ACR Convergence 2025
Inhibition of Wnt Signaling Attenuates Inflammatory Arthritis Severity
Alisa Mueller¹, Angela Zou², Lucy-Jayne Marsh³, Samuel Kemble³, Saba Nayar³, Gerald Watts⁴, Cassandra Murphy⁵, Emily Taylor³, Triin Major³, David Gardner⁶, Christopher Buckley⁷, Kevin Wei⁸, Soumya Raychaudhuri⁵, ilya Korsunsky⁵, Andrew Filer⁹, Adam Croft¹⁰ and Michael Brenner¹¹, ¹Stanford University and VA Palo Alto Health Care System, Stanford, CA, ²Harvard Medical School, Boston, MA, ³University of Birmingham, Birmingham, United Kingdom, ⁴Harvard Medical School, Brookline, MA, ⁵Brigham and Women's Hospital, Boston, MA, ⁶University of Birmingham, Havelock North, New Zealand, ⁷University of Oxford, Oxford, United Kingdom, ⁸Brigham and Women's Hospital at Harvard Medical School, Boston, MA, ⁹The University of Birmingham, Birmingham, United Kingdom, ¹⁰University of Birmingham, Hagley, Stourbridge, United Kingdom, ¹¹Brigham and Women's Hospital, Harvard Medical School, Newton, MA
Background/Purpose: Fibroblasts are critical in promoting pathogenic synovial inflammation and bone erosion in rheumatoid arthritis (RA). Moreover, recent studies have pointed to their potential contribution…
Abstract Number: 0472 • ACR Convergence 2025
Detrimental Effects of Umbilical Cord Blood-derived Mesenchymal Stem Cells Intra-articular Injections on Pannus Invasiveness
Sung Eun Kim¹, Hye Lim Kang¹, Min Jung Kim², Hyung-Sik Kim³ and Kichul Shin⁴, ¹Division of Rheumatology, Department of Internal Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea, ²Seoul Metropolitan Government Boramae Medical center, Dongjak-gu, Seoul, South Korea, ³Department of Oral Biochemistry, Pusan National University School of Dentistry, Yangsan, Republic of Korea, ⁴Seoul National University, Seoul, South Korea
Background/Purpose: Studies have shown that mesenchymal stem cell (MSC) infusion ameliorates arthritis in animal models. However, the first-pass effect in the lung has directed attention…

1
2
3
…
10
Next Page »

All abstracts accepted to ACR Convergence are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

Accepted abstracts are made available to the public online in advance of the meeting and are published in a special online supplement of our scientific journal, Arthritis & Rheumatology. Information contained in those abstracts may not be released until the abstracts appear online. In an exception to the media embargo, academic institutions, private organizations, and companies with products whose value may be influenced by information contained in an abstract may issue a press release to coincide with the availability of an ACR abstract on the ACR website. However, the ACR continues to require that information that goes beyond that contained in the abstract (e.g., discussion of the abstract done as part of editorial news coverage) is under media embargo until 10:00 AM CT on October 25. Journalists with access to embargoed information cannot release articles or editorial news coverage before this time. Editorial news coverage is considered original articles/videos developed by employed journalists to report facts, commentary, and subject matter expert quotes in a narrative form using a variety of sources (e.g., research, announcements, press releases, events, etc.).

Violation of this policy may result in the abstract being withdrawn from the meeting and other measures deemed appropriate. Authors are responsible for notifying colleagues, institutions, communications firms, and all other stakeholders related to the development or promotion of the abstract about this policy. If you have questions about the ACR abstract embargo policy, please contact ACR abstracts staff at [email protected].