Abstracts tagged "neutrophils"

Abstract Number: 0948 • ACR Convergence 2021
Immunometabolism of Neutrophils in Antiphospholipid Syndrome (APS)
Ajay Tambralli¹, Alyssa Harbaugh², Shanea Estes², Srilakshmi Yalavarthi², Claire Hoy², Gautam Sule² and Jason Knight², ¹University of Michigan, Ypsilanti, MI, ²University of Michigan, Ann Arbor, MI
Background/Purpose: Neutrophil hyperactivity and neutrophil extracellular trap (NET) release (NETosis) appear to play roles in APS pathophysiology. Until recently, it was thought that neutrophils relied…
Abstract Number: 0994 • ACR Convergence 2021
Role of SLE Associated Cytokines in Generation of Mature Neutrophils
Neelakshi R. Jog, Julia Nguyen and Judith James, Oklahoma Medical Research Foundation, Oklahoma City, OK
Background/Purpose: Systemic lupus erythematosus (SLE) is a systemic autoimmune disease characterized by autoantibody production and periods of elevated disease activity. Recent studies indicate that along…
Abstract Number: 0998 • ACR Convergence 2021
Increasing Age Impairs the Metabolic Adaptation of Human Neutrophils to Glucose Deprivation
Moritz Pfeiffenberger¹, Pierre-Louis Krau², Yuling Chen³, Thomas Buttgereit⁴, Alexandra Damerau¹, Timo Gaber¹ and Frank Buttgereit⁴, ¹Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany, ²Charit Universittsmedizin Berlin, corporate member of Freie Universitt Berlin, Humboldt-Universitt zu Berlin, and Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Berlin, Germany, ³Charité University Medicine Berlin, Berlin, Germany, ⁴Charité – Universitätsmedizin Berlin, Berlin, Germany
Background/Purpose: Age-related impairment of characteristic neutrophil functions is well described (Fortin, McDonald et al. 2008). However, experimental evidence for age-related alterations of neutrophil metabolic adaptation…
Abstract Number: 0792 • ACR Convergence 2020
LY294002 Improves the Collagen-induced Arthritis by Inducing Neutrophil Apoptosis
Xuechan Huang¹, Tianwang Li¹, Shuyang Chen¹, Zhixiang Huang¹ and Junming Chen¹, ¹Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, Guangdong, China (People's Republic)
Background/Purpose: Neutrophils play a central role in host defense, but they also play important effectors on acute and chronic inflammation. Neutrophil apoptosis is essential for…
Abstract Number: 0845 • ACR Convergence 2020
Hematopoietic Specific Deficiency of Rho Kinase Attenuates Neutrophil NETosis and UVB-induced Skin Inflammation
Minghui Li¹, Xing Lyu¹, Yubin Li², James Liao³, Victoria Werth⁴ and Ming-Lin Liu¹, ¹University of Pennsylvania, philadelphia, ²University of Pennsylvania and the Michael J. Crescenz VA Medical Center, Philadelphia, PA, ³University of Chicago, Chicago, ⁴University of Pennsylvania and Corporal Michael J. Crescenz Veterans Administration Hospital, Philadelphia
Background/Purpose: Neutrophils are the most abundant leukocytes and the first to be recruited to the site of photodamage after ultraviolet B (UVB) exposure. We have…
Abstract Number: 0901 • ACR Convergence 2020
Proinflammatory Neutrophil Function Is Modulated During Secukinumab Therapy in Psoriatic Arthritis Without Compromising Host Defence
Robert Moots¹, Andy Cross², Helen Wright², Steven Edwards², Nicola Goodson³, Jenny Hawkes³, Ayren Mediana¹ and Helen Frankland¹, ¹Liverpool University Hospitals, Liverpool, United Kingdom, ²University of Liverpool, Liverpool, United Kingdom, ³University of Liverpool, Liverpool
Background/Purpose: Secukinumab is a monoclonal antibody that neutralises IL-17A, which plays a key role in the IL-23/17A axis underlying the pathophysiology of psoriatic arthritis (PsA). …
Abstract Number: 0945 • ACR Convergence 2020
Neutrophils Mediate Kidney Inflammation Following Acute Skin Exposure to UV Light
Sladjana Skopelja-Gardner¹, Joyce Tai², Xizhang Sun², Lena Tanaka², James Kuchenbecker², Tomas Mustelin¹ and Keith Elkon², ¹University of Washington, Seattle, WA, ²University of Washington, Seattle
Background/Purpose: Sensitivity to ultraviolet (UV) light affects up to 80% of SLE patients and can exacerbate systemic disease flares, including lupus nephritis (LN). Our findings…
Abstract Number: 0948 • ACR Convergence 2020
Mass Cytometry Reveals Activation Heterogeneity of Circulating Neutrophils in Systemic Lupus Erythematosus
Ricardo Grieshaber-Bouyer¹, Joshua Keegan², Peter Nigrovic³, James Lederer⁴ and Deepak Rao², ¹Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany; Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Heidelberg, Germany, ²Brigham and Women's Hospital, Boston, MA, ³Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA, Boston, ⁴BWH Harvard Medical School, Boston, MA
Background/Purpose: Neutrophils are important effector cells in systemic immune-mediated diseases. Neutrophil phenotypes vary depending on their age, maturity, activation state, and local environment; however, differences…
Abstract Number: 0064 • ACR Convergence 2020
Neutrophil Extracellular Traps Are Sufficient to Activate the Alternative Pathway of Complement
Rebecca Schriefer¹, Michelle Elvington², Priyan Weerappuli³ and Alfred Kim⁴, ¹Washington University School of Medicine, Saint Louis, MO, ²Kypha, Inc., Saint Louis, MO, ³University of Michigan, Ann Arbor, MI, ⁴Washington University School of Medicine, St. Louis, MO
Background/Purpose: Systemic lupus erythematosus (SLE) replies on complement activation to drive many of the pathophysiologic features of disease. We and others have noted that SLE…
Abstract Number: 1518 • ACR Convergence 2020
The Role for Neutrophils in the Early Phases of Enthesitis in Spondyloarthritis
Zheni Stavre¹, Charles Bridgewood², Qiao Zhou², Yukiko Maeda³, Jozsef Karman⁴, Dennis McGonagle⁵ and Ellen Gravallese⁶, ¹University of Massachusetts Medical School-Rheumatology Division, Worcester, MA, ²University of Leeds, Leeds, United Kingdom, ³University of Massachusetts Medical School, worcester, MA, ⁴Abbvie Inc., Worcester, MA, ⁵The University of Leeds, Leeds Institute for Rheumatic and Musculoskeletal Medicine, NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospitals Trust, Leeds, UK, Leeds, United Kingdom, ⁶Brigham and Women's Hospital, Boston, MA
Background/Purpose: Neutrophils are present in the early phases of spondyloarthritis (SpA)-associated uveitis, skin and intestinal disease, but their role in enthesitis remains unknown. We investigated…
Abstract Number: 0069 • ACR Convergence 2020
Identification of CD13 as a Potential Cause for SARS-CoV-2-triggered Hyperinflammation and Thrombosis
Eliza Pei-Suen Tsou¹, Gautam Sule¹, Mikel Gurrea Rubio², M. Asif Amin¹, Yu Zuo¹, Jason Knight¹, Yogendra Kanthi³ and David Fox¹, ¹Division of Rheumatology, University of Michigan, Ann Arbor, MI, ²Division of Rheumatology, University of Michigan, Canton, MI, ³Division of Cardiovascular Medicine, Ann Arbor
Background/Purpose: The ectopeptidase CD13, which is highly expressed on stromal and myeloid cells in joints, lung and other tissues, is a known receptor for many…
Abstract Number: 1818 • ACR Convergence 2020
IgG and IgA Autoantibodies Against L1 ORF1p Expressed in Granulocytes Correlate with Granulocyte Consumption and Disease Activity in Pediatric Systemic Lupus Erythematosus
Kennedy Ukadike¹, Kathryn Ni¹, Victoria Carter¹, Martin Taylor², John LaCava³, Lauren Pachman⁴, Xiaoxing Wang¹, Mary Eckert⁵, Anne Stevens¹, Christian Lood¹ and Tomas Mustelin¹, ¹University of Washington, Seattle, WA, ²Massachusetts General Hospital, Boston, MA, ³Rockefeller University, New York, NY, ⁴Department of Pediatrics, Northwestern University Feinberg School of Medicine; The Ann and Robert H. Lurie Children's Hospital of Chicago, Division of Pediatric Rheumatology; The CureJM Center of Excellence in Juvenile Myositis Research and Care, The Stanley Manne Children's Research Center of Chicago, Lake Forest, IL, ⁵Seattle Children's Hospital, Seattle, WA
Background/Purpose: To quantitate autoantibodies against the RNA-binding p40 (ORF1p) protein encoded by the L1 retroelement, expression of p40 itself, and markers of neutrophil death in…
Abstract Number: 0070 • ACR Convergence 2020
Neutrophils Transiting Through Megakaryocytes During Emperipolesis Exhibit Distinct Fates and Acquire the Capacity to Guide Other Neutrophils via MK Trails
Frank Huang¹, Pierre Cunin², Felix Radtke³, Ricardo Grieshaber-Bouyer⁴, Roxane Darbousset⁵ and Peter Nigrovic⁶, ¹Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany, Darmstadt, Baden-Wurttemberg, Germany, ²Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Boston, MA, ³Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany, Boston, ⁴Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany; Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Heidelberg, Germany, ⁵Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Boston, ⁶Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA, Boston
Background/Purpose: Megakaryocytes (MKs) can contribute directly to experimental arthritis via pro-inflammatory microparticles containing IL-1 (Cunin et al. Journal of Clinical Investigation, 2017). MKs also interact…
Abstract Number: 0073 • ACR Convergence 2020
A Cross-Species Map of Neutrophil Inflammatory Responses
Felix Radtke¹, Frank Huang², Peter Nigrovic³ and Ricardo Grieshaber-Bouyer⁴, ¹Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany, Heidelberg, Baden-Wurttemberg, Germany, ²Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany, Darmstadt, Baden-Wurttemberg, Germany, ³Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA, Boston, ⁴Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany; Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Heidelberg, Germany
Background/Purpose: Neutrophils are important mediators of immune defense as well as key protagonists in immune-mediated disease. How these cells adapt differently to sterile and septic…
Abstract Number: 0287 • ACR Convergence 2020
RNA Externalized by Neutrophil Extracellular Traps Promotes Inflammatory Pathways in Endothelial Cells
Xinghao Wang¹, Philip Carlucci², Jorge Romo-Tena¹, Jose Torres-Ruiz¹, Hong-Wei Sun¹, Markus Hafner¹, Mariana Kaplan³ and Luz Blanco⁴, ¹NIAMS, National Institute of Health, Bethesda, ²New York University School of Medicine, New York, NY, ³National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, ⁴National Institute of Arthritis and Musculoskeletal and Skin Diseases, Centreville
Background/Purpose: Neutrophil extracellular traps (NETs) are extracellular lattices composed of nucleic material bound to neutrophil granule proteins. NETs may play pathogenic roles in development and…

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