Abstracts tagged "macrophages"

Abstract Number: 996 • 2019 ACR/ARP Annual Meeting
The Role of Flip in Differentiation and Survival of Synovial Tissue Resident Macrophages
Qi Huang¹, Renee Doyle ¹, Shang-Yang Chen ², Alexander Misharin ³, Deborah Winter ⁴ and Richard Pope ⁵, ¹Northwestern University Feinberg School of Medicine, Chicago, IL, ²Northwestern University, Chicago, ³Northwestern University Feinberg School of Medicine, chicago, ⁴Northwestern University Feinberg School of Medicine, Division of Rheumatology, Chicago, ⁵Northwestern University Feinberg School of Medicine, Division of Rheumatology, chicago, IL
Background/Purpose: We previously identified that under homeostatic conditions Flip was necessary for macrophage (MΦ) survival. The mechanisms responsible for the differentiation of monocyte-derived MΦs into…
Abstract Number: 1056 • 2019 ACR/ARP Annual Meeting
Profibrotic Macrophage Activation in Systemic Sclerosis Is Dependent on the Mechanosensing MRTF-A Pathway
Tricia Lim¹, Kristina Krogmannova ¹, Shiwen Xu ¹, Bahja Ahmed Abdi ², David Abraham ¹, Christopher Denton ³ and Richard Stratton ¹, ¹University College London, London, United Kingdom, ²University College London, London, ³University College London Division of Medicine, Centre for Rheumatology and Connective Tissue Diseases, London, UK, London, United Kingdom
Background/Purpose: An M2-like alternative activation state of macrophages has been linked to the pathogenesis of several fibrotic disorders, including systemic sclerosis (SSc). MRTF-A is an…
Abstract Number: 1073 • 2019 ACR/ARP Annual Meeting
Identification of Distinct Pro-Fibrotic Monocyte and Macrophage Subsets in Systemic Sclerosis
Angela Tam¹, Lauren Reinke-Breen ², Glenda Trujillo ², Shiwen Xu ¹, Christopher Denton ³, David Abraham ¹, Gabor Jarai ² and Voon Ong ⁴, ¹University College London, London, United Kingdom, ²Bristol-Myers Squibb, Pennington, ³University College London Division of Medicine, Centre for Rheumatology and Connective Tissue Diseases, London, UK, London, United Kingdom, ⁴UCL Medical School, Royal Free Campus, London
Background/Purpose: Chronic inflammation may modulate the balance of classical, intermediate and non-classical monocyte subsets (defined by CD14/CD16 expression)1. Monocytes are heterogeneous and subsets can be…
Abstract Number: 2002 • 2019 ACR/ARP Annual Meeting
Presence of the MerTK Receptor on Human Synovial Tissue Macrophages Lowers Inflammatory Cytokine Production and Activation of the MerTK+CD206+ Subpopulation Limits the Inflammatory Response of Synovial Fibroblasts
Samuel Finlay¹, Stefano Alivernini ², Aziza Elmesmari ³, Barbara Tolusso ², Luca Petricca ², Clara Di Mario ⁴, Annunziata Capacci ², Andrew Filer ⁵, Gianfranco Ferraccioli ², Iain McInnes ¹, Elisa Gremese ² and Mariola Kurowska-Stolarska ¹, ¹Institute of Infection, Immunity & Inflammation, University of Glasgow, Glasgow, United Kingdom, ²Division of Rheumatology - Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy, ³Institute of Infection, Immunity & Inflammation, University of Glasgow, Glasgow, Scotland, United Kingdom, ⁴Institute of Rheumatology - Università Cattolica del Sacro Cuore, Rome, Italy, ⁵Institute of Inflammation and Ageing College of Medical and Dental Sciences University of Birmingham, Birmingham, United Kingdom
Background/Purpose: Background: A substantial proportion of Rheumatoid Arthritis patients do not respond to treatment and only a small proportion achieve sustained disease remission. We showed…
Abstract Number: 840 • 2018 ACR/ARHP Annual Meeting
The CCL21/CCR7 Axis Drives Vascular, Inflammatory and Destructive Remodeling in Rheumatoid Arthritis
Katrien Van Raemdonck^1,2, Karol Palasiewicz^1,2, Sadiq Umar^1,2 and Shiva Shahrara², ¹Jesse Brown VA Medical Center, Chicago, IL, ²Medicine, Division of Rheumatology, University of Illinois at Chicago, Chicago, IL
Background/Purpose: The synovial tissue of rheumatoid arthritis (RA) patients exhibits abundant expression of CCL21, produced excessively by RA fibroblasts and macrophages. While CCR7 mediates CCL21-driven…
Abstract Number: 846 • 2018 ACR/ARHP Annual Meeting
CD14 Deficiency Dampens Osteoclastogenesis and Alters Bone Remodeling in a Murine Model of Osteoarthritis
Cheng Zhou^1,2, Vu Nguyen^2,3, Ryan Smalley², Nisha Sambamurthy^1,2, George R. Dodge^2,4 and Carla Scanzello^1,2, ¹Division of Rheumatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, ²Translational Musculoskeletal Research Center, CMC Veterans Affairs Medical Center, Philadelphia, PA, ³University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, ⁴Department of Orthopaedic Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
Background/Purpose: Pathogenesis of osteoarthritis (OA) is accompanied by chronic inflammation evidenced by macrophage infiltration into the joint. CD14, is expressed by monocyte/macrophage lineage cells, and…
Abstract Number: 929 • 2018 ACR/ARHP Annual Meeting
Transcriptional Profiling of the Subcutaneous Rheumatoid Nodule: An Insight into Pathogenic Mechanisms and Cellular Content
Judith Marsman¹, Melanie J Millier¹, John Highton¹, Lisa K. Stamp² and Paul A Hessian¹, ¹Department of Medicine, University of Otago, Dunedin, New Zealand, ²University of Otago, Christchurch, New Zealand
Background/Purpose: Rheumatoid nodules are the most common cutaneous manifestation in patients with RA, often associated with longstanding and a more severe disease course. Paradoxically, therapy…
Abstract Number: 1011 • 2018 ACR/ARHP Annual Meeting
Tissue Resident Macrophages Establish a Niche That Limits Monocyte to Macrophage Differentiation in Synovial Tissue during Homeostasis
Qi Quan Huang¹, Renee E. Doyle², Alexander Misharin³, Shang-Yang Chen⁴, Deborah R. Winter⁵ and Richard M. Pope², ¹Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL, ²Medicine/Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL, ³Medicine/pulmonary, Northwestern University Feinberg School of Medicine, Chicago, IL, ⁴Medicine/Rheumatology, Northwestern University Feinberg School of Medicine, chicago, IL, ⁵Department of Medicine Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL
Background/Purpose: Monocytes and Macrophages play critical roles in immune homeostasis and host defense. Recent studies identified that macrophages are highly heterogeneous in terms of location,…
Abstract Number: 1353 • 2018 ACR/ARHP Annual Meeting
Autophagy Marker LC3 Accumulates in Immune-Mediated Necrotizing Myopathy Muscle Fibres
Margherita Giannini¹, Francesco Girolamo², Anna Lia², Angela Amati², Luigi Serlenga², Dario D'Abbicco³, Marilina Tampoia⁴, Maria Trojano² and Florenzo Iannone¹, ¹D.E.T.O., Rheumatology Unit - D.E.T.O. - University of Bari (ITALY), Bari, Italy, ²Department of Basic Medical Sciences, Neuroscience and Sense Organs, Unit of Neurophysiopathology, Policlinico Hospital, University of Bari, BARI, Italy, ³Institute of General Surgery ‘G Marinaccio’ (DETO), Policlinico Hospital, University of Bari, BARI, Italy, ⁴Laboratory of Clinical Pathology, University Hospital of Bari, BARI, Italy
Background/Purpose: To investigate the expression of autophagy marker LC3, localization of macrophages and accumulation of misfolded proteins in myofibres of immune-mediated necrotizing myopathy (IMNM) muscle…
Abstract Number: 2043 • 2018 ACR/ARHP Annual Meeting
Monocytes and Macrophages of Patients with Rheumatoid Arthritis Respond to Pathologically Increased Ionized Calcium with Proinflammatory Cytokine Production
Supriya Murthy¹, Elisabeth Jaeger¹, Sebastian Jung¹, Kathleen Friedrich², Olga Seifert¹, Christoph Baerwald¹, Matthias Pierer¹ and Manuela Rossol¹, ¹Department of Internal Medicine, Rheumatology, University of Leipzig, Leipzig, Germany, ²Department of Internal Medicine, Rheumatology, University of Leipzig, Germany, Leipzig, Germany
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease characterized by synovitis and periarticular bone erosion. Bony erosions and cell necrosis might lead to a local…
Abstract Number: 174 • 2017 ACR/ARHP Annual Meeting
Transcriptional Profiling of Synovial Macrophages from RA Patients to Capture Disease Heterogeneity
Philip J. Homan¹, Arthur M. Mandelin II², Salina Dominguez¹, Emily Bacalao³, S. Louis Bridges Jr.⁴, Joan M. Bathon⁵, John Atkinson⁶, David Fox⁷, Eric L. Matteson⁸, Chris Buckley⁹, Costantino Pitzalis¹⁰, Deborah Parks¹¹, Laura Hughes¹², Laura Geraldino-Pardilla¹³, Robert Ike¹⁴, Kristine Phillips¹⁵, Kerry Wright¹⁶, Andrew Filer¹⁷, Stephen Kelly¹⁸, Eric M. Ruderman¹⁹, Carla Cuda¹, Hiam Abdala-Valencia³, Alexander Misharin³, G. R. Scott Budinger³, Richard M. Pope¹⁹, Harris Perlman²⁰ and Deborah R. WInter¹, ¹Department of Medicine Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL, ²Rheumatology, Northwestern University, Chicago, IL, ³Northwestern University, Chicago, IL, ⁴Clinical Immunology & Rheum, Univ of Alabama, Birmingham, AL, ⁵Division of Rheumatology, Columbia University Medical Center, New York, NY, ⁶Washington University in St. Louis, St. Louis, MO, ⁷Department of Medicine [Division of Rheumatology], University of Michigan Medical System, Ann Arbor, MI, ⁸Rheumatology, Mayo Clinic College of Medicine and Science, Rochester, MN, ⁹University of Birmingham, Birmingham, United Kingdom, ¹⁰Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London, School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom, ¹¹Washington University School of Medicine in St. Louis, St. Louis, MO, ¹²University Alabama Birmingham, Birmingham, AL, ¹³Columbia University, New york, NY, ¹⁴Division of Rheumatology, University of Michigan, Ann Arbor, MI, ¹⁵University of Michigan, Ann Arbor, MI, ¹⁶Rheumatology, Mayo Clinic, Rochester, MN, ¹⁷Institute of Inflammation and Ageing (IIA), University of Birmingham, Birmingham, United Kingdom, ¹⁸William Harvey Research Institute, London, United Kingdom, ¹⁹Medicine/Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL, ²⁰Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, Northwestern University Feinberg School of Medicine,, Chicago, IL
Background/Purpose: In a given patient with rheumatoid arthritis (RA), it is difficult to predict disease progression or identify to which treatments they will respond. Macrophages…
Abstract Number: 301 • 2017 ACR/ARHP Annual Meeting
MiR-221-3p Overexpression Impairs Anti-Inflammatory Activity of TLR4-Stimulated M2-Macrophages
Lilian Quero^1,2, Andre Tiaden^1,2 and Diego Kyburz^2,3, ¹Department of Biomedicine, Experimental Rheumatology, University of Basel, Basel, Switzerland, ²Rheumatology, University Hospital Basel, Basel, Switzerland, ³Department of Biomedicine, Experimental Rheumatology, University of Basel, 4051 Basel, Switzerland
Background/Purpose: MicroRNAs (miRNAs) have been shown to contribute to the inflammatory response in rheumatoid arthritis (RA) and several of these miRNAs have been found to…
Abstract Number: 1791 • 2017 ACR/ARHP Annual Meeting
TET1 Is an Important Transcriptional Activator of the Tnfa Locus in Macrophages
Emmanuel Karouzakis¹, Fangfang Sun², Agnieszka Pajak¹, Shuang Ye², Steffen Gay¹, Oliver Distler³ and Michel Neidhart¹, ¹Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland, ²Department of Rheumatology, Renji Hospital South Campus, School of Medicine, Shanghai Jiao Tong University, Shanghai, China, ³Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland
Background/Purpose: Activated macrophages are found in the inflamed and hyperplastic synovial RA tissue. Macrophages are the main producers of high levels of pro-inflammatory cytokines such…
Abstract Number: 2570 • 2017 ACR/ARHP Annual Meeting
The Functional Consequence of Human (hu)TLR8 on Macrophage Immunometabolism and Renal Inflammation in Murine Systemic Lupus Erythematosus
Naomi I. Maria¹, Megan Woods², Shani Martinez³, Weiqing Huang⁴ and Anne Davidson⁴, ¹Center for Autoimmune and Musculoskeletal Diseases, Feinstein Institute for Medical Research, Manhasset, NY, ²Center for Autoimmunity and Musculoskeletal Diseases, Feinstein Institute for Medical Research, Manhasset, NY, ³Feinstein Institute for Medical Research, Manhasset, NY, ⁴Autoimmunity and Musculoskeletal Diseases, Feinstein Institute for Medical Research, Manhasset, NY
Background/Purpose: Infiltrating macrophages are one of the hallmarks of renal inflammation and kidney damage in lupus nephritis. Increasing evidence suggests the crucial role of cell-specific…
Abstract Number: 3175 • 2016 ACR/ARHP Annual Meeting
Longitudinal Analysis of MMF Clinical, Molecular, and Immunohistochemistry (IHC) Responses Shows SSc Patients Lose Their Inflammatory Signature and Rebound upon Treatment Cessation
Diana Toledo¹, Monique Hinchcliff², Jaclyn Taroni¹, Tammara A. Wood³, Jennifer Franks³, Sanjiv Shah⁴, Rishi Agrawal⁴, Lauren Beussink-Nelson⁴, Mary A. Carns⁵, Sofia Podlusky⁶, Patricia Pioli⁷ and Michael Whitfield³, ¹Department of Molecular & Systems Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, ²Northwestern University, Feinberg School of Medicine Scleroderma Program, Chicago, IL, ³Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, ⁴Northwestern University, Chicago, IL, ⁵Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, IL, ⁶Rheumatology Feinberg School of Medicine, Northwestern University, Chicago, IL, ⁷Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH
Background/Purpose: We previously showed patients in the inflammatory subset were most likely to demonstrate improvement in modified Rodnan Skin Score (mRSS) during mycophenolate mofetil (MMF)…