Abstracts tagged "Myositis"

Abstract Number: 0715 • ACR Convergence 2021
High-Dimensional Analysis Reveals Abnormal B Cell Subsets Associated with Specific Changes to Circulating T and Myeloid Cell Populations in Patients with Idiopathic Inflammatory Myopathies
Erin Wilfong¹, Todd Bartkowiak², Katherine Vowell¹, Camille Westlake¹, Jonathan Irish², Peggy Kendall³, Leslie Crofford¹ and Rachel Bonami¹, ¹Vanderbilt University Medical Center, Nashville, TN, ²Vanderbilt University, Nashville, TN, ³Washington University in St. Louis, St. Louis, MO
Background/Purpose: The idiopathic inflammatory myopathies (IIM) are a clinically heterogeneous group of conditions affecting the skin, muscle, joint, and lung in various combinations. This study…
Abstract Number: 1389 • ACR Convergence 2021
Subclinical ILD Is Frequent and Progresses Across Different Connective Tissue Diseases
Anna-Maria Hoffmann-Vold¹, Helena Andersson², Silje Reiseter², Håvard Fretheim², Imon Barua¹, Torhild Garen³, Øyvind Midtvedt¹, Ragnar Gunnarsson², Michael Durheim², Trond Mogens AAløkken² and Øyvind Molberg¹, ¹Department of Rheumatology, Oslo University Hospital, Oslo, Norway, ²Oslo University Hospital, Oslo, Norway, ³Department of Rheumatology, Oslo University Hospital, Oslo, Nepal
Background/Purpose: Based on the argument that symptoms-define-disease, physicians commonly apply the terms pre-clinical or sub-clinical disease to describe patients with disease-related findings, but no accompanying…
Abstract Number: 0693 • ACR Convergence 2021
Discovery of Antigen Specific CD4+ T Cells in Anti-HMGCR-positive Immune Mediated Necrotizing Myopathy
Eleni Tiniakou¹, Andrew Mammen² and Erika Darrah¹, ¹Johns Hopkins University, Baltimore, MD, ²National Institutes of Health, Bethesda, MD
Background/Purpose: Anti-3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR)-positive immune mediated necrotizing myopathy (anti-HMGCR+ IMNM) is a unique myopathy characterized by IgG autoantibodies against HMGCR and a strong…
Abstract Number: 0716 • ACR Convergence 2021
Marked Capillary Basement Membrane Reduplication Is the Hallmark Histopathological Feature of Scleromyositis
Benjamin Ellezam¹, Yves Troyanov², Valérie Leclair³, Imane Bersali⁴, Margherita Giannini⁴, Sabrina Hoa⁵, Josiane Bourré-Tessier⁵, Minoru Satoh⁶, Marvin Fritzler⁷, Béatrice Lannes⁸, Jean-Luc Senécal⁵, Marie Hudson⁹, Alain Meyer⁴ and Océane Landon-Cardinal⁵, ¹Division of Pathology, CHU Sainte-Justine; Department of Pathology and Cell Biology, Université de Montréal, Montréal, QC, Canada, ²Division of Rheumatology, Hôpital du Sacré-Coeur; Department of Medicine, Université de Montréal, Montréal, QC, Canada, ³Division of Rheumatology, Jewish General Hospital; Department of Medicine, McGill University, Montréal, QC, Canada, ⁴Service de physiologie- explorations fonctionnelles musculaire, service de rhumatologie et Centre de références des maladies autoimmunes rares, Hôpitaux universitaires de Strasbourg., Strasbourg, France, ⁵Division of Rheumatology, Centre hospitalier de l'Université de Montréal; Department of Medicine, Université de Montréal, Montréal, QC, Canada, ⁶Department of Clinical Nursing, University of Occupational and Environmental Health, Kitakyushu, Japan, ⁷University of Calgary, Calgary, AB, Canada, ⁸Service de Pathologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France, ⁹McGill University, Montréal, QC, Canada
Background/Purpose: Scleromyositis (SM) is an emerging subset of autoimmune myositis (AIM) in patients with features of systemic sclerosis (SSc). SM patients may present without characteristic…
Abstract Number: 1511 • ACR Convergence 2021
Investigation of Antigen Specific CD4+ T Cells in Patients with Idiopathic Inflammatory Myopathies
Begum Horuluoglu¹, Angeles Shunashy Galindo-Feria², Karine Chemin³, Genadiy Kozhukh⁴, Anatoly Dubnovitsky⁴, Vivianne Malmström⁵ and Ingrid E Lundberg⁶, ¹Karolinska Institutet, Stockholm, Sweden, ²Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden, ³Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden, ⁴Science for Life Laboratory, Karolinska Institutet, Stockholm, Sweden, ⁵Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden, ⁶Karolinska Institutet, Karolinska University Hospital, Division of Rheumatology, Department of Medicine Solna, Stockholm, Sweden, Stockholm, Sweden
Background/Purpose: Idiopathic inflammatory myopathies (IIM) also known as myositis, are rare chronic autoimmune disorders represented by lesions in muscle, skin and lung. One of the…
Abstract Number: 0694 • ACR Convergence 2021
Glucagon-like Peptide-1 Receptor Agonist Suppresses Muscle Fiber Necroptosis and Muscle Inflammation and Ameliorates Muscle Weakness in Experimental Polymyositis
Mari Kamiya¹, Fumitaka Mizoguchi¹, Hirokazu Sasaki², Natsuka Umezawa¹ and Shinsuke Yasuda³, ¹Department of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan, ²Department of Lifetime Clinical Immunology, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University (TMDU), Tokyo, Japan, ³Tokyo Medical and Dental University (TMDU), Tokyo, Japan
Background/Purpose: While glucocorticoids (GC) are the cornerstone of the treatment for polymyositis (PM), GC-induced myopathy is inevitable, which deteriorates muscle weakness. Therefore, novel therapeutic strategy…
Abstract Number: 0717 • ACR Convergence 2021
Association of Fatigue with Disease Activity in Myositis
Tissa Bijoy George¹, Anjana Chandrasekhara Pillai², Siamak Moghadam-Kia³, Nicole Neiman⁴, Dana Ascherman³, Chester Oddis³, Dianxu Ren⁴ and Rohit Aggarwal³, ¹UPMC McKeesport, Monroeville, PA, ²UPMC, Pittsburgh, PA, ³University of Pittsburgh, Pittsburgh, PA, ⁴University of Pittsburgh Medical Center, Pittsburgh, PA
Background/Purpose: The Idiopathic inflammatory myopathies are a heterogeneous group of rare systemic autoimmune diseases with muscle as the primary target. Fatigue is one of the…
Abstract Number: 1527 • ACR Convergence 2021
Effect of Rituximab on IgG Levels and Associated Infection Risk in Myositis
Michael Macklin¹, Chester Oddis², Siamak Moghadam-Kia², Dana Ascherman² and Rohit Aggarwal², ¹University of Pittsburgh, Pittsburgh, ²University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Rituximab is an anti-CD20 antibody with therapeutic use in myositis. However, given its B cell depleting mechanism, there is concern regarding its association with…
Abstract Number: 0697 • ACR Convergence 2021
Detection of Autoantibodies Against Muscle-Specific Four-and-a-Half-LIM Domain 1 (FHL1) in Inflammatory Myopathies: Results from a Single-Center Cohort
Angeles Shunashy Galindo-Feria¹, Begum Horuluoglu¹, Jessica Day², Catia Cerqueira³, Edvard Wigren⁴, Susanne Gräslund⁴, Susanna Proudman⁵, Ingrid E Lundberg⁴ and Vidya Limaye⁶, ¹Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden, ²Rheumatology Unit, Royal Adelaide Hospital, Adelaide, Australia and Discipline of Medicine, University of Adelaide, Adelaide, Australia, ³4Dcell, Montreuil, France, ⁴Karolinska Institutet, Karolinska University Hospital, Division of Rheumatology, Department of Medicine Solna, Stockholm, Sweden, Stockholm, Sweden, ⁵University of Adelaide, Medindie, Australia, ⁶Royal Adelaide Hospital, Adelaide, Australia
Background/Purpose: Autoantibodies targeting a muscle-specific autoantigen, four-and-a-half-LIM-domain 1 (FHL1), have been previously identified in patients with idiopathic inflammatory myopathies (IIM) (1). The aim of this…
Abstract Number: 0718 • ACR Convergence 2021
Pain Severity and Interference in Adult Autoimmune Inflammatory Myopathies
Harmony Tsui¹, Mianbo Wang², Mathieu Piché³, Alexandra Ladouceur⁴, Evelyne Vinet⁵, Alexandra Albert⁶, Maggie Larche⁷, Annaliese Tisseverasinghe⁸, Marie Hudson¹ and Valerie Leclair⁹, ¹McGill University, Montréal, QC, Canada, ²Lady Davis institute for Medical Research, Montréal, QC, Canada, ³Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada, ⁴McGill University Health Center, Montréal, QC, Canada, ⁵McGill University Health Centre, Mont Royal, QC, Canada, ⁶CHU de Quebec, Québec City, QC, Canada, ⁷McMaster University, Hamilton, ON, Canada, ⁸University of Manitoba, Winnipeg, MB, Canada, ⁹McGill University, Karolinska Insitutet, Montréal, QC, Canada
Background/Purpose: Although pain is one of the most common and highest priority symptoms reported by people with autoimmune inflammatory myopathies (AIM), large descriptive studies on…
Abstract Number: 1841 • ACR Convergence 2021
Presence of Autoantibodies to Dense-Fine-Speckled 70 (DFS70) Do Not Necessarily Rule out Connective Tissue Diseases
Louisa-Marie Mockenhaupt¹, Ramona Dolscheid-Pommerich¹, Charlotte Behning¹, Birgit Stoffel-Wagner², Peter Brossart¹ and Valentin Schäfer¹, ¹University Hospital Bonn, Bonn, Germany, ²University Hospital Bonn, Bonn
Background/Purpose: Antinuclear antibodies (ANA) are serological markers for the presence of connective tissue diseases [1]. In some patients, a pattern can be detected in ANA…
Abstract Number: 0001 • ACR Convergence 2021
Autoantigenic Properties Indicated for the Entire Aminoacyl tRNA Synthetase Family in Idiopathic Inflammatory Myopathies
Charlotta Preger¹, Antonella Notarnicola¹, Cecilia Hellström², Edvard Wigren¹, Catia Cerqueira³, Peter Nilsson², Ingrid E Lundberg¹, Helena Persson⁴, Susanne Gräslund¹ and Per-Johan Jakobsson⁵, ¹Karolinska Institutet, Karolinska University Hospital, Division of Rheumatology, Department of Medicine Solna, Stockholm, Sweden, Stockholm, Sweden, ²Division of Affinity Proteomics, Department of Protein Science, KTH Royal Institute of Technology & SciLifeLab, Stockholm, Sweden, ³4Dcell, Montreuil, France, ⁴Drug Discovery and Development Platform, SciLifeLab & School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH), Solna, Sweden, ⁵Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Autoantibodies are thought to play a key role in the pathogenesis of idiopathic inflammatory myopathies (IIM). However, 40% of IIM patients, even those with…
Abstract Number: 0698 • ACR Convergence 2021
Flow Cytometry and Sorting of Single Antibody Secreting Cells from Frozen Muscle Tissue
Andrew Zlobin, Peter Pytel and Vladimir Liarski, University of Chicago, Chicago, IL
Background/Purpose: Idiopathic inflammatory myopathies (IIM) – dermatomyositis (DM), polymyositis, and inclusion body myositis - are poorly understood autoimmune muscle disorders. Isolation of relevant immune cell…
Abstract Number: 0719 • ACR Convergence 2021
Increased Risk of Venous Thromboembolism in Adult Patients with Idiopathic Inflammatory Myopathies
Gözde Kübra Yardımcı¹, Arzu Taghiyeva², Enes Erul², Bayram Farisogulları³, Levent Kilic¹ and Sule Apraş Bilgen¹, ¹Hacettepe University, Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, Ankara, Turkey, ²HACETTEPE UNIVERSITY, Ankara, Turkey, ³Division of Rheumatology, Department of Internal Medicine Faculty of Medicine, Hacettepe University, Ankara, Turkey
Background/Purpose: Idiopathic inflammatory myopathies (IIMs) patients have a higher risk of venous thromboembolism (VTE) [1]. We aimed to assess the incidence of thrombosis and associated…
Abstract Number: 0008 • ACR Convergence 2021
Jo-1-Binding and Clonally-Expanded Memory B Cells Express Germline and Somatically-Mutated B Cell Receptors in Anti-tRNA Synthetase Syndrome Patients
Erin Wilfong, Alberto Cisneros, Jennifer Young-Glazer, Scott Smith, Leslie Crofford and Rachel Bonami, Vanderbilt University Medical Center, Nashville, TN
Background/Purpose: Anti-tRNA synthetase syndrome (ARS) is a severe systemic autoimmune disease associated with myositis, interstitial lung disease, rash, and arthritis. ARS is associated with autoantibodies…

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