Abstracts tagged "Mitochondrial Dysfunction"

Abstract Number: 2443 • ACR Convergence 2025
Mitochondrial dysfunction drives natural killer cell dysfunction in systemic lupus erythematosus
Natalia Fluder¹, Morgane Humbel², Camillo Ribi¹ and Denis Comte¹, ¹Lausanne University Hospital / University of Lausanne, Lausanne, Switzerland, ²Beth Israel Deaconess Medical Center, Harvard Medical School, Boston
Background/Purpose: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by immune dysregulation and widespread inflammation. Natural killer (NK) cells, essential for immune surveillance,…
Abstract Number: 2147 • ACR Convergence 2025
Elevated fMET and GDF-15 Circulating Levels in Pediatric CNO Patients with Psoriasis Define a Distinct Mitochondrial-Inflammatory Signature
Arpit Rathee¹, Noor Kaur¹, Jorge A. Gonzalez-Chapa², Ryan D. Stultz¹, Emily Deng³, Ian Muse⁴, Yongdong Zhao³ and Christian Lood², ¹University of Washington, Division of Rheumatology, Seattle, WA, ²University of Washington, Division of Rheumatology, Seattle, ³University of Washington, Department of Pediatrics, Seattle Children's Hospital, Seattle, WA, ⁴University of Washington, Department of Pediatrics, Seattle Children's Hospital, Seattle
Background/Purpose: Chronic nonbacterial osteomyelitis (CNO) is a pediatric autoinflammatory bone disorder marked by sterile skeletal inflammation. A subset of CNO patients presents with comorbid psoriasis,…
Abstract Number: 1873 • ACR Convergence 2025
TGF-β-Driven Mitochondrial Stress Activates cGAS-STING Signalling via Impaired Mitophagy in Systemic Sclerosis Endothelial Cells
Stefano Di Donato¹, Ceclie Bordes², Claude Lalou², agathe Depaire², John Tchen², Charlene Lhuissier², damien Brisou², Vanja Sisirak², Johan Garaude², Christopher Wasson³, Rebecca Ross⁴, Francesco Del Galdo³ and Marie-Elise Truchetet⁵, ¹University of Leeds, Canosa Sannita, Chieti, Italy, ²University of Bordeaux, Bordeaux, France, ³University of Leeds, Leeds, United Kingdom, ⁴Medicine and Health, University of Leeds, Leeds, United Kingdom, ⁵Bordeaux University Hospital, Bordeaux, France
Background/Purpose: Emerging evidence implicates mitochondrial dysfunction as a contributor to tissue fibrosis in systemic sclerosis (SSc) (1). Endothelial cells, which are a key player in…
Abstract Number: 1837 • ACR Convergence 2025
Enhanced Mitochondrial Activity in B cells from Females Is Required to Drive Increased T-bet Induction by TLR7 in Lupus
John D. Mountz¹, Kathryn Sullivan², Shanrun Liu², Cynthia Liu², Min Gao², Walter Winn Chatham³, Tanecia Mitchell² and Hui-Chen Hsu², ¹University Alabama Birmingham, Birmingham, AL, ²University of Alabama at Birmingham, Birmingham, AL, ³University of Nevada, Las Vegas, Las Vegas, NV
Background/Purpose: Systemic lupus erythematosus (SLE) is a predominantly female autoimmune disease, with a 9:1 female-to-male ratio. Our previous studies indicated that increased T-bet+ age-related B…
Abstract Number: 1788 • ACR Convergence 2025
Manganese-associated Single-nucleotide Polymorphisms are Associated with Radiographic Knee Osteoarthritis: The Johnston County Osteoarthritis Project
Griffin Sonaty¹, Carolina Alvarez², Liubov Arbeeva³, Joanne Jordan¹, Brian Diekman⁴, Doug Phanstiel¹, Richard Loeser⁵ and Amanda Nelson¹, ¹University of North Carolina at Chapel Hill, Chapel Hill, NC, ²University of North Carolina at Chapel Hill, Miami, FL, ³University of North Carolina, Chapel Hill, Carrboro, NC, ⁴Univesity of North Carolina at Chapel Hill, Chapel Hill, NC, ⁵University of North Carolina, Chapel Hill, NC
Background/Purpose: Trace elements may be differentially associated with osteoarthritis (OA) risk. Single-nucleotide polymorphisms (SNPs) have been found to correlate to cumulative exposure level, free of…
Abstract Number: 0975 • ACR Convergence 2025
Linezolid prevents fibroblast activation and ameliorates tissue fibrosis by inhibition of mitochondrial translation
Xuezhi Hong¹, Yanhua Xiao², shihao zhu³, Tim Filla⁴, Andrea-Hermina Györfi⁵, Yi-Nan Li⁶, Meilin Xu⁷, Langxian Zhi², Thuong Trinh-Minh⁸, Clara Dees⁹, Georg Schett¹⁰, Jörg Distler¹¹ and Alexandru-Emil Matei¹², ¹Department of Rheumatology, University Hospital Dusseldorf, Medical Faculty of Heinrich Heine University, Dusseldorf, Germany, Düsseldorf, Germany, ²Medical Faculty of Heinrich Heine University, Dusseldorf, Germany, ³Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University, Düsseldorf, Germany, ⁴Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University., Düsseldorf, Germany, ⁵Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University., Düsseldorf, Germany, ⁶University Hospital of Düsseldorf, Düsseldorf, Germany, ⁷Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University, Düsseldorf, Germany, Düsseldorf, Germany, ⁸Clinic for Rheumatology University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University, Düsseldorf, Germany; Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University, Düsseldorf, Nordrhein-Westfalen, Germany, ⁹Department of Internal Medicine ³, Rheumatology and Clinical Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany, Erlangen, Germany, ¹⁰Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ¹¹University Hospital Duesseldorf and HHU, Duesseldorf, Germany, ¹²Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, and Fraunhofer Cluster of Excellence for Immune Mediated Diseases CIMD, Frankfurt am Main, Germany, Düsseldorf, Germany
Background/Purpose: Systemic sclerosis (SSc) is a progressive fibrotic disease characterized by fibroblast activation and immune dysregulation, with limited therapeutic options. Mitochondrial dysfunction is increasingly implicated…
Abstract Number: 0931 • ACR Convergence 2025
Reduced mitophagy in salivary glands of Sjögren’s disease patients is associated with mitochondrial structural damage
Salvador Campos¹, Sergio Aguilera², Juan Gutiérrez¹, Isabel Castro³, Patricia Carvajal³, Lorena Carvajal¹, Sergio González⁴, Claudio Molina⁵, María-Julieta González⁶ and María-José Barrera⁵, ¹Universidad San Sebastián, Santiago, Region Metropolitana, Chile, ²Clinica Indisa, Santiago, Region Metropolitana, Chile, ³Departamento de Tecnología Médica, Facultad de Medicina, Universidad de Chile, Santiago, Region Metropolitana, Chile, ⁴Escuela de Odontología, Universidad Mayor, Santiago, Region Metropolitana, Chile, ⁵Facultad de Odontología, Universidad San Sebastián, Santiago, Region Metropolitana, Chile, ⁶ICBM, Facultad de Medicina, Universidad de Chile, Santiago, Region Metropolitana, Chile
Background/Purpose: Primary Sjögren's disease (pSjD) is a systemic autoimmune disease characterized mainly by immune-mediated damage to exocrine glands. Previously, we found decreased expression of ATG5…
Abstract Number: 0115 • ACR Convergence 2025
Dysfunctional Mitophagy Propels Neutrophil Hyperactivity and Thrombosis in Antiphospholipid Syndrome
Ajay Tambralli¹, Emily Becker², Kaitlyn Sabb³, NaveenKumar Somanathapura¹, Srilakshmi Yalavarthi¹, Cyrus Sarosh⁴, Jacqueline Madison¹, Yu (Ray) Zuo¹ and Jason S. Knight¹, ¹University of Michigan, Ann Arbor, MI, ²University of Michigan, Ann Arbor, ³University of Michigan - Ann Arbor, Ann Arbor, MI, ⁴University of Michigan, Temperance, MI
Background/Purpose: Neutrophil hyperactivity and neutrophil extracellular trap (NET) release (NETosis) contribute to antiphospholipid syndrome (APS) pathogenesis. We recently discovered that APS patient neutrophils have more…
Abstract Number: 0059 • ACR Convergence 2025
Formyl Peptide Receptor 1 (FPR1) Influences Arthritis Severity in a Sex- and Compartment-Specific Manner
Ryan D. Stultz¹, Payton Hermanson², Noelle Mullin³, Simeon Ramsey³ and Christian Lood², ¹University of Washington, Division of Rheumatology, Seattle, WA, ²University of Washington, Seattle, WA, ³Pfizer Inc., Cambridge, MA
Background/Purpose: Rheumatoid arthritis (RA) is a chronic, systemic inflammatory disease that disproportionately affects females over males (3:1). Although sex-based immune differences have been documented, particularly…
Abstract Number: 2652 • ACR Convergence 2025
Anti-mitochondrial antibodies in systemic sclerosis target enteric neurons and are associated with GI dysmotility
Zsuzsanna McMahan¹, Srinivas Puttapaka², Livia Casciola-Rosen³, Timothy Kaniecki³, Laura Gutierrez³, Su Hong MIng², Philippa Seika² and Subhash Kulkarni⁴, ¹UT Health Houston, Houston, TX, ²BIDMC/Harvard, Boston, MA, ³Johns Hopkins University, Baltimore, MD, ⁴BIDMC, Boston, MA
Background/Purpose: Most patients with systemic sclerosis (SSc) experience gastrointestinal (GI) dysmotility. The enteric nervous system (ENS) regulates GI motility, and its dysfunction causes dysmotility. A…
Abstract Number: 1141 • ACR Convergence 2024
Defining a Novel Type of Myositis: Immune Mediated Megaconial Myopathy (IMMM)
Teerin Liewluck¹, Ashley Santilli², Oliver Ni³, Margherita Milone², Duygu Selcen², Anahit Mehrabyan⁴, Arjun Seth⁵, Christine Hsieh⁵, Wasim Raslan⁶, Moayd Alkhalifah⁶, Raed Alenezi⁶, Stefan Nicolau⁷ and Pannathat Soontrapa⁸, ¹Mayo Clinic, Rochester, MN, ²Mayo Clinic-Rochester, Rochester, MN, ³Hennepin Healthcare, Minneapolis, MN, ⁴University of North Carolina, Chapel Hill, NC, ⁵Northwestern University, Chicago, IL, ⁶Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia, ⁷Nationwide Children’s Hospital, Columbus, OH, ⁸Siriraj Hospital, Mahidol University, Bangkok, Thailand
Background/Purpose: To describe a novel type of myositis, immune mediated megaconial myopathy (IMMM), pathologically characterized by giant mitochondria (megaconia).Methods: We reviewed the Mayo Clinic Muscle…
Abstract Number: 1266 • ACR Convergence 2024
Anti-Mitochondrial Antibodies Associate with Disease Activity and IFNα Expression in Childhood-onset Systemic Lupus Erythematosus
Marina Barguil Macedo¹, Javad Wahadat², Albin Bjoerk³, Sylvia Kamphuis², Marjan Versnel² and Christian Lood¹, ¹University of Washington, Seattle, WA, ²Erasmus University Medical Center, Rotterdam, Netherlands, ³Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Extracellular mitochondria may represent a source of antigenic burden in autoimmune disorders, such as in systemic lupus erythematosus (SLE), in which those organelles, released…
Abstract Number: 1684 • ACR Convergence 2024
Autoantibodies to Transcription Factor a Mitochondria Are Associated with Damage Accrual, Malignancy Risk and Mortality in SLE
Eduardo Gomez¹, Daniel Goldman², Merlin Paz³, Michelle Petri² and Felipe Andrade⁴, ¹The Johns Hopkins University, Baltimore, MD, ²Johns Hopkins University School of Medicine, Timonium, MD, ³Johns Hopkins Medicine, Baltimore, MD, ⁴The Johns Hopkins University School of Medicine, Timonium, MD
Background/Purpose: We recently identified autoantibodies in SLE that target transcription factor A mitochondrial (TFAM), a critical protein in mitochondrial DNA transcription and packaging1. These autoantibodies…
Abstract Number: 1735 • ACR Convergence 2024
High-Intensity Interval Training Outperforms Moderate Exercise in Aerobic Capacity for Recent-Onset Idiopathic Inflammatory Myopathies: A Randomized Controlled Trial
Kristofer Andreasson¹, Cecilia Leijding¹, Maryam Dastmalchi², Antonella Notarnicola³, Stefano Gastaldello¹, Heléne Sandlund², Daniel Andersson⁴, Ingrid Lundberg⁵ and Helene Alexanderson², ¹Karolinska Institutet, Stockholm, Sweden, ²Karolinska University hospital, Stockholm, Sweden, ³Karolinska University Hospital and Karolinska Institutet, Stockholm, Stockholms Lan, Sweden, ⁴Karolinska Institutet, Solna, Sweden, ⁵Karolinska Universitetssjukhuset, Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Exercise is a recognized adjunctive therapy for patients with idiopathic inflammatory myopathies (IIM), enhancing physical capacity and reducing inflammation. Hitherto, moderate-to-intensive exercise has been…
Abstract Number: 1783 • ACR Convergence 2024
Deciphering the Roles of Mitochondrial-Related Genes and Ferroptosis in Systemic Lupus Erythematosus: Integrated Analysis for Diagnostic Biomarker Identification and Therapeutic Insights
Yunfeng Dai and Zhihan Chen, Fujian Medical University, Fuzhou City, Fujian, China (People's Republic)
Background/Purpose: Systemic lupus erythematosus (SLE) is a complex autoimmune disease with heterogeneous clinical manifestations. Understanding the molecular mechanisms of SLE is crucial for developing effective…

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