Abstracts tagged "Muscle Biology"

Abstract Number: 2073 • ACR Convergence 2025
Cell-free DNA as a Potential Marker of Muscle Involvement and Treatment Response in Myositis
Sabína Oreská¹, Kristina Svobodová¹, Lucia Vernerová¹, Dana Dlouhá², Hana Wunsch¹, Karel Pavelka¹, Jiri Vencovsky³, Ladislav Šenolt⁴, Michal Vrablik⁵, Jaroslav Alois Hubáček² and Michal Tomcik¹, ¹Institute of Rheumatology and Department of Rheumatology, ¹st Faculty of Medicine, Charles University, Prague, Czech Republic, Prague, Czech Republic, ²Experimental Medicine Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic, ³Institute of Rheumatology, Praha ⁸, Czech Republic, ⁴Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ⁵³rd Department of Internal Medicine, General University Hospital and ¹st Faculty of Medicine, Charles University, Prague, Czech Republic, Prague, Czech Republic
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are characterized by inflammatory muscle injury. Circulating cell-free DNA (cfDNA), including nuclear (cfnDNA) and mitochondrial (cfmtDNA) DNA, has been shown…
Abstract Number: 1826 • ACR Convergence 2025
Single Nuclei Multiome of JDM Muscle Biopsies Reveals Novel Upregulation of Inflammatory and Vascular Pathways
Shannon O'Connor, Casey Swoboda, Matthew Weirauch, Alexander Zygmunt, Douglas Millay and Leah Kottyan, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
Background/Purpose: Juvenile dermatomyositis (JDM) is a multisystem vasculopathy and inflammatory myopathy characterized by proximal muscle weakness, distinct rash, and risk of long-term complications such as…
Abstract Number: 1211 • ACR Convergence 2025
Plasma Levels of miR-133a-3p and miR-1-3p as Potential Biomarkers of Muscle Involvement and Initial Treatment Response in Myositis
Kristina Svobodová¹, Sabína Oreská¹, Lucia Vernerová², Dana Dlouhá³, Hana Wunsch², Karel Pavelka², Jiri Vencovsky⁴, Ladislav Šenolt⁵, Michal Vrablik⁶, Jaroslav Alois Hubáček³ and Michal Tomcik², ¹Institute of Rheumatology and Department of Rheumatology, ¹st Faculty of Medicine, Charles University, Prague, Czech Republic, ²Institute of Rheumatology and Department of Rheumatology, ¹st Faculty of Medicine, Charles University, Prague, Czech Republic, Prague, Czech Republic, ³Experimental Medicine Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic, ⁴Institute of Rheumatology, Praha ⁸, Czech Republic, ⁵Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ⁶³rd Department of Internal Medicine, General University Hospital and ¹st Faculty of Medicine, Charles University, Prague, Czech Republic, Prague, Czech Republic
Background/Purpose: Idiopathic inflammatory myopathies (IIM) involve muscle inflammation. MicroRNAs (miRNAs), such as miR-133a-3p and miR-1-3p, play a key role in gene regulation and muscle repair.…
Abstract Number: 1204 • ACR Convergence 2025
Validity and reliability of a new ultrasound-based semiquantitative echogenicity grading scale for myositis.
Takeshi Yoshida¹, Didem Saygin² and Jemima Albayda³, ¹Johns Hopkins Hospital, Baltimore, MD, ²Rush University Medical Center, Chicago, IL, ³Johns Hopkins University, Baltimore, MD
Background/Purpose: The Heckmatt grading scale has been widely used as a semiquantitative assessment method for grading muscle echo intensity (EI) on ultrasound; however, this was…
Abstract Number: 0999 • ACR Convergence 2025
Myositis Induced by Histidyl-Transfer tRNA Synthetase is Exacerbated by Membranopathy and Suppressed by Regulatory T Cells
Samantha Coss¹, Nicholas Young², Shane Bruckner³, Braden Zeno⁴, Gianni Giarrano⁵, Hannah Bulgart⁶, Paula Clemens⁷, Jisna Paul², Chester V. Oddis⁸, noah weisleder⁹, Dana Ascherman⁸ and Wael Jarjour¹⁰, ¹Nationwide Children's Hospital, Columbus, OH, ²Division of Rheumatology and Immunology, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, Columbus, OH, ³OSU, Columbus, OH, ⁴Ohio State University, upper arlington, OH, ⁵Division of Rheumatology, Nationwide Children's Hospital, Columbus, OH, ⁶Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY, ⁷Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, ⁸University of Pittsburgh, Pittsburgh, PA, ⁹University of Kentucky, Lexington, KY, ¹⁰The Ohio State University, Columbus, OH
Background/Purpose: Idiopathic inflammatory myopathies (IIMs) are a heterogeneous group of autoimmune disorders targeting muscle as well as extra-muscular organs. Among the most common autoantibodies associated…
Abstract Number: 0280 • ACR Convergence 2025
Sera from dermatomyositis patients induce muscle weakness via activation of type I interferon (IFN) receptors.
Suchada Kaewin¹, Cecilia Leijding², Kristofer Andreasson², Helene Alexanderson³, Stefano Gastaldello¹, Ingrid Lundberg² and Daniel C. Andersson², ¹Karolinska Institutet, inst fysiologi och farmakologi, Stockholm, Sweden, ²Karolinska Institutet, Stockholm, Sweden, ³Karolinska University Hospital, Stockholm, Sweden
Background/Purpose: Dermatomyositis (DM) is a major subtype of idiopathic inflammatory myopathies (IIMs) and characterized by muscle weakness, systemic inflammation and cutaneous lesions. Expression of type…
Abstract Number: 0026 • ACR Convergence 2025
Spatial Proteomic-based Phenotyping of Muscle Stem Cells and their Niches in Myositis
Bilgesu Safak Tümerdem¹, Yi-Nan Li², Tim Filla³, Rolf Schröder⁴, Anna Brunn⁵, Alexandru Micu⁶, Ayla Nadja Stuetz¹, Laura-Marie Lahu⁶, Aleix Rius Rigau⁷, Christina Bergmann⁸, Alexandru-Emil Matei⁹, Jörg Distler¹⁰ and Andrea-Hermina Györfi¹¹, ¹Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University, Düsseldorf, Nordrhein-Westfalen, Germany, ²University Hospital of Düsseldorf, Düsseldorf, Germany, ³Department 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, ⁴Institute of Neuropathology, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ⁵Institute of Neuropathology, Heinrich-Heine University, University Hospital of Düsseldorf, Düsseldorf, Germany, ⁶Department 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, ⁷Department of Internal Medicine ³, Rheumatology and Clinical Immunology, Friedrich-Alexander-University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen. Deutsches Zentrum Immuntherapie (DZI), Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ⁸Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ⁹Department 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, ¹⁰University Hospital Duesseldorf and HHU, Duesseldorf, Germany, ¹¹Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University., Düsseldorf, Germany
Background/Purpose: Immune-mediated inflammatory myopathies (IIMs) are a heterogeneous group of diseases characterized by chronic inflammation, damage and impaired regeneration of the skeletal muscle leading to…
Abstract Number: 2085 • ACR Convergence 2024
The Effects of Pioglitazone on Metabolic Dysregulation in Inclusion Body Myositis: An Open-Label Pilot Study
Brittany Adler¹, Michael Bene¹, Cissy Zhang², Julie Paik¹, Christopher Mecoli¹, Thomas Lloyd³, Eleni Tiniakou⁴, Erika Darrah¹, Lisa Christopher-Stine¹, Albert Mears¹, Megan McGowan¹, Ruben Pagkatipunan¹, Anne Le² and Jemima Albayda⁵, ¹Johns Hopkins University, Baltimore, MD, ²Gigantest, Baltimore, MD, ³Baylor College of Medicine, Houston, TX, ⁴Johns Hopkins University, Lutherville Timonium, MD, ⁵Johns Hopkins School of Medicine, Baltimore, MD
Background/Purpose: Inclusion body myositis (IBM) is a progressive muscle disease for which there is no effective treatment. Mitochondrial dysregulation is a pathologic hallmark of IBM.…
Abstract Number: 2669 • ACR Convergence 2024
Dysferlin Autoantibodies Compromise Sarcolemmal Repair Capacity and Contribute to the Pathogenesis of Idiopathic Immune Myopathies
Hannah Bulgart¹, Kassidy Banford², Shane Bruckner³, Kevin McElhanon², Nicholas Young¹, Brian Paleo², Eric Beck², Rohit Aggarwal⁴, Chester Oddis⁵, Braden Zeno⁶, Wael Jarjour⁷ and Noah Weisleder³, ¹The Ohio State University Wexner Medical Center, Columbus, OH, ²The Ohio State University, Columbus, ³Ohio State University, Columbus, OH, ⁴Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA, Pittsburgh, PA, ⁵Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, ⁶Ohio State University, upper arlington, OH, ⁷The Ohio State University, Columbus, OH
Background/Purpose: Idiopathic immune myopathies (IIMs) are a group of autoimmune diseases that produce chronic inflammation and degeneration of skeletal muscle structure and function. One process…
Abstract Number: 2670 • ACR Convergence 2024
Sera from Patients with Idiopathic Inflammatory Myopathy Induces Muscle Weakness, Mitochondrial Dysfunction and Induction of Cytokines in Isolated Skeletal Muscle
Cecilia Leijding¹, Suchada Kaewin², Kristofer Andreasson¹, Tomas Schiffer¹, Angeles Galindo-Feria³, Begum Horuluoglu¹, Mattias Carlstrom¹, Stefano Gastaldello¹, Helene Alexanderson⁴, Ingrid Lundberg⁵ and Daniel Andersson⁶, ¹Karolinska Institutet, Stockholm, Sweden, ²Karolinska Institutet, Stockholm, ³Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden, ⁴Karolinska University Hospital, Stockholm, Sweden, ⁵Karolinska Universitetssjukhuset, Karolinska Institutet, Stockholm, Sweden, ⁶Karolinska Institutet, Solna, Sweden
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are a group of systemic autoimmune inflammatory muscle disorders characterized by symmetrical skeletal muscle weakness and accelerated fatigue. Although signs…
Abstract Number: 0163 • ACR Convergence 2024
Modification of 2017 EULAR/ACR Myositis Classification Criteria for Dermatomyositis, Clinically Amyopathic Dermatomyositis, and Immune-mediated Necrotizing Myopathy
Ching Chung¹, Yusra Hasan², Rajesh Gopalarathinam³, shiri keret⁴, Dana Ascherman⁵, Siamak Mogahadam⁶, Chester Oddis⁶ and Rohit Aggarwal⁷, ¹UPMC McKeesport, Pittsburgh, PA, ²CHI health Creighton university medical center, Omaha, NE, ³Division of Rheumatology, Wrightington Wigan and Leigh Teaching Hospitals NHS Foundation Trust, Wigan, United Kingdom, ⁴Rheumatology unit, Bnai-Zion medical center and the faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel., Atlit, Israel, ⁵Division of Rheumatology and Clinical Immunology, University of Pittsburgh Medical Center, Pittsburgh, PA, ⁶Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, ⁷Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA, Pittsburgh, PA
Background/Purpose: The 2017 ACR/EULAR classification criteria for idiopathic inflammatory myopathies (IIM) currently used in myositis clinical trials/research demonstrated 87% sensitivity and 82% specificity for a…
Abstract Number: 0320 • ACR Convergence 2024
Comparative Transcriptional Profiling Reveals Shared Pathway Activation Between Human Jo-1+ Anti-Synthetase Syndrome and Murine Histidyl-tRNA Synthetase-Induced Myositis
Iago Pinal-Fernandez¹, Daniel Reay², Timothy Oriss², katherine Pak³, Maria Casal-Dominguez⁴, jose milisenda⁵, Albert Selva-O’Callaghan⁶, Werner Stenzel⁷, Andrew Mammen¹ and Dana Ascherman⁸, ¹NIH, Bethesda, MD, ²University of Pittsburgh School of Medicine, Pittsburgh, PA, ³National Institutes of Health, Bethesda, MD, ⁴NIH, Bathesda, MD, ⁵Hospital Clinic de Barcelona, Barcelona, Spain, ⁶Systemic Autoimmune Disease Unit, Vall d’Hebron Institute of Research, Barcelona, Spain, ⁷Charite University, Berlin, Germany, ⁸Division of Rheumatology and Clinical Immunology, University of Pittsburgh Medical Center, Pittsburgh, PA
Background/Purpose: Previous work has shown unique gene expression profiles in muscle tissue corresponding to the anti-synthetase syndrome, with an emphasis on interferon gene signatures (Type…
Abstract Number: 0326 • ACR Convergence 2024
Validity and Responsiveness of Core Set Measures in Idiopathic Inflammatory Myositis Based on 36-item Short Form Health Survey (SF-36)
Maha Almackenzie¹, Anushka Aggarwal², shiri keret³, shreya Sriram⁴, Tanya Chandra⁵, Raisa Silva⁶, Eugenia Gkiaouraki⁴, Siamak Mogahadam⁷, Chester Oddis⁷ and Rohit Aggarwal⁸, ¹Division of Rheumatology, Department of Medicine, Medical Cities of the Ministry of the Interior Riyadh, Saudi Arabia, Arlington, VA, ²Department of Rheumatology, Indraprastha Apollo Hospital, New delhi, NY, ³Rheumatology unit, Bnai-Zion medical center and the faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel., Atlit, Israel, ⁴Division of Rheumatology and Clinical Immunology, University of Pittsburgh Medical Center, Pittsburgh, PA, ⁵University of Pittsburgh Medical Center, Pittsburgh, PA, ⁶Internal medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, ⁷Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, ⁸Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, USA, Pittsburgh, PA
Background/Purpose: There are six core set measures (CSMs) of disease activity in patients with idiopathic inflammatory myopathies (IIM). However, there is limited data on their…
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: 1779 • ACR Convergence 2024
Single-Nuclear RNA-Sequencing of Treatment Naïve JDM Muscle Highlights Dysregulated Vascular Integrity and Angiogenesis in Endothelial Cells and Decreased Nitric Oxide Synthase Signaling in Type II Muscle Fibers
Jessica Turnier¹, Chioma Madubata², Christine Goudsmit³, Sean Ferris³, Celine Berthier³, Zilan Zheng⁴, Sophia Matossian³, Jeff Dvergsten⁵, Meredyth Wilkinson⁶, Lucy R Wedderburn⁷, Gabrielle Morgan⁸, Lauren Pachman⁹, Claudia Lalancette³, Stephen Parker³, Andrew Heaton¹⁰, J. Michelle Kahlenberg³, Gabriela K Fragiadakis² and Jessica Neely⁴, ¹University of Michigan, Saline, MI, ²University of California, San Francisco, San Francisco, CA, ³University of Michigan, Ann Arbor, MI, ⁴UCSF, San Francisco, CA, ⁵Duke University Hospital, Hillsborough, NC, ⁶Great Ormond Street Institute of Child Health, London, United Kingdom, ⁷UCL GOS Institute of Child Health, London, United Kingdom, ⁸Ann & Robert H. Lurie Children's Hospital of Chicago and Northwestern University Feinberg School of Medicine, Chicago, IL, ⁹Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ¹⁰Cure JM, Leesburg, VA
Background/Purpose: Juvenile dermatomyositis (JDM) is the most common idiopathic inflammatory myopathy in children, and it frequently follows a chronic disease course. Treatments are limited secondary…

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