Abstracts tagged "macrophages"

Abstract Number: 1396 • ACR Convergence 2024
Low CD47 Expression on B Cells, Induces High B Cell Phagocytosis by Macrophages and Is a Predictive Biomarker of Anti-rituximab Antibodies and Lower Response in Rheumatoid Arthritis
Samuel Bitoun¹, Bineta Ly², Audrey Paoletti², Catherine Menier Menier³, Marc Pallardy⁴, Bernard Maillere⁵ and Xavier Mariette⁶, and ABIRISK consortium, ¹Service de Rhumatologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicetre, France, ²Rheumatology departement, Université Paris Saclay, Inserm UMR 1184,Hopital Bicêtre, APHP, FHU CARE, Le Kremlin Bicêtre, France, ³1 CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, Université de Paris-Saclay, Gif sur Yvette, France, ⁴Université Paris-Saclay, INSERM, Inflammation Microbiome Immunosurveillance, Orsay, France, ⁵CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, Université de Paris-Saclay, Gif sur Yvette, France, ⁶Service de Rhumatologie, Hôpital Bicêtre, AP-HP, Le Kremlin Bicetre, France
Background/Purpose: Rituximab (RTX) provides long lasting efficacy in the control of rheumatoid arthritis. Among factors associated with RTX failure are the occurrence of anti-drug antibodies…
Abstract Number: 2594 • ACR Convergence 2024
A Novel Therapeutically Active CSF-1R Agonist Promotes Tissue Macrophages Inflammation Resolution and Induces Tissue Repair Pathways
Saul Kivimae¹, Sandip Mukherjee², Phi Quach³, Rhoneil Pena⁴, Olga Zemska³, Michal Olszewski⁵, Jicai Huang³, Michael Labson⁶, Donald Walker¹, Mekhala Maiti⁷, Chakrapani Tripathi⁸, Thomas Chang³, Suresh Adapala⁹, Damon Hamel³, Katherine Brendza³, Takahiro Miyazaki³ and Jonathan Zalevsky¹, ¹Nektar Therapeutics, San Francisco, CA, ²Nurix Therapeutics, San Francisco, ³Nektar Therapeutics, San Francisco, ⁴Sutro Biopharma, South San Francisco, ⁵Vaxcyte, San Francisco, ⁶Guardant Health, Palo Alto, ⁷Alumis, Inc, South San Francisco, ⁸Theragent Inc, Arcadia, CA, ⁹Inotiv, Rockville, MD
Background/Purpose: Current standard of care chronic inflammatory disease therapies are designed to suppress inflammation and are not optimized for inflammation resolution and restoration of tissue…
Abstract Number: 0096 • ACR Convergence 2024
Simultaneous Contribution of Brain-Intrinsic and Peripheral Disease Mechanisms to Neuropsychiatric Symptoms of Systemic Lupus Erythematosus (NPSLE)
Hadijat Makinde¹, Mohammad Khan¹, Cecilia Stumpf², Yidan Wang³, Tyler Therron², Margaret Goldman², Deborah Winter⁴ and Carla Cuda¹, ¹Northwestern University, Chicago, IL, ²Northwestern University, Chicago, ³Northwestern University, Hanover Park, IL, ⁴Northwestern University, Skokie, IL
Background/Purpose: While NPSLE are among the least understood complications, increasing evidence points to microglia, a brain-resident innate immune cell population, as a driver of disease.…
Abstract Number: 1643 • ACR Convergence 2024
Single Nuclei Multiome and Spatial Transcriptomic Analysis of Early, Untreated SSc Skin Identifies Signaling Interactions Between Macrophages and Fibroblasts
Helen Jarnagin¹, Dillon Popovich², Rezvan Parvizi³, Rosemary Gedert⁴, Lam C. Tsoi⁵, Rachael Wasikowski⁵, Zhiyun Gong¹, Madeline Morrisson⁶, Laurent Perreard⁷, Fred Kolling IV⁷, Dinesh Khanna⁴, Johann Gudjonsson⁴ and Michael Whitfield³, ¹Dartmouth College, Lebanon, NH, ²Dartmouth College, West Lebanon, NH, ³Geisel School of Medicine at Dartmouth, Hanover, NH, ⁴University of Michigan, Ann Arbor, MI, ⁵Michigan, Dept. of Dermatology, Ann Arbor, MI, ⁶Geisel School of Medicine at Dartmouth College, Hanover, NH, ⁷Geisel School of Medicine, Dartmouth College, Lebanon
Background/Purpose: We generated a vertically integrated dataset on treatment naïve patients with dcSSc (diffuse Systemic Sclerosis) skin that includes bulk RNA-seq, single nuclei multiome, and…
Abstract Number: 2645 • ACR Convergence 2024
Human NCF1-p.R90H Variant Promotes Pulmonary Fibrosis in the Bleomycin-induced Mouse Model and Systemic Sclerosis Patients via Expansion of SPP1+Monocytes-derived Macrophages
Xinran Yuan¹, Xiaodong Qin², Kenji Takemoto¹, Jian Zhao¹, Matthew Sanderson¹, Xue Xu¹, Kristi L Helke³, Bethany Wolf⁴, Joel Guthridge⁵, Judith A James⁶, Xiaodong Zhou⁷, Shervin Assassi⁸, Carol Feghali-Bostwick⁴, Dandan Wang⁹, Lingyun Sun¹⁰ and Betty P Tsao¹, ¹Division of Rheumatology and Immunology, Department of Medicine, Medical University of South Carolina, Charleston, SC, ²Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China (People's Republic), ³Department of Comparative Medicine, Medical University of South Carolina, Charleston, SC, ⁴Medical University of South Carolina, Charleston, SC, ⁵Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁶Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁷Division of Rheumatology, University of Texas Health Science Center at Houston, Houston, TX, ⁸UTHealth Houston Division of Rheumatology, Houston, TX, ⁹Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical Schoo, Nanjing, Jiangsu, China (People's Republic), ¹⁰Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China (People's Republic)
Background/Purpose: We previously identified a systemic lupus erythematosus (SLE) causal risk variant, p.Arg90His (p.R90H, rs201802880) substitution encoded in neutrophil cytosolic factor 1 (NCF1), an essential component…
Abstract Number: 0263 • ACR Convergence 2024
Characteristics and Coinfections of Diffuse Alveolar Hemorrhage in Rheumatic Patients
Eduardo Briones-García¹, Shaul Navarro-Lara², Marco A Ortiz-Bustamante², Iris Paola García Herrera³, Carla M Roman-Montes² and Guillermo A Guaracha-Basañez⁴, ¹Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán. Immunology and Rheumatology Department., Ciudad de México, Distrito Federal, Mexico, ²Departamento de Infectología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador-Zubirán., México city, Mexico, ³Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico, ⁴Instituto Nacional de Ciencias Medicas y Nutricion “Salvador Zubirán”, Mexico City, Distrito Federal, Mexico
Background/Purpose: Diffuse alveolar hemorrhage (DAH) is a severe respiratory complication observed in certain rheumatic diseases, such as systemic lupus erythematosus (SLE), ANCA-associated vasculitides (AAV), and…
Abstract Number: 1686 • ACR Convergence 2024
Urine Proteomics in Class II Lupus Nephritis Reveals Immune Activation and Pro-Fibrotic Signatures
Jasmine Shwetar¹, Jill Buyon², Michelle Petri³, Kelly Ruggles⁴ and Andrea Fava⁵, ¹New York School of Medicine, Ann Arbor, MI, ²NYU Grossman School of Medicine, New York, NY, ³Johns Hopkins University School of Medicine, Timonium, MD, ⁴NYU Grossman School of Medicine, Brooklyn, NY, ⁵Johns Hopkins University, Baltimore, MD
Background/Purpose: Lupus nephritis (LN) is a pathologically diverse autoimmune disease that can lead to end-stage kidney disease and mortality. Although Class II LN is considered…
Abstract Number: 0279 • ACR Convergence 2024
Macrophage Intracellular Fates of Monosodium Urate and Calcium Pyrophosphate Crystals: Phagocytosis, Exchanged/expulsion and Dissolution of Crystals
Charles Leroy¹, Nghia Pham², François Brial³, Brenda Kischkel⁴, gwénaêlle Jayat⁵, Elena Ishow⁶, Christèle Combes⁷, Leo Joosten⁴, Augustin Latourte⁸, Pascal Richette⁹ and Hang-Korng Ea¹⁰, ¹Inserm 1132 / Université Paris Cité, levallois-perret, France, ²INSERM 1132, BIOSCAR, Lariboisière hospital, Paris, France, ³Inserm 1132/ Université Paris Cité, Paris, France, ⁴Radboudumc, Nijmegen, Netherlands, ⁵Université Paris cité / Inserm 1132, paris, France, ⁶Université de Nantes / Ceisam, Nantes, France, ⁷INP-ENSIACET, Toulouse, France, ⁸AP-HP, Paris, France, ⁹Lariboisière Hospital, Paris, France, ¹⁰Université Paris Cité, INSERM UMR 1132 BIOSCAR, Paris, France
Background/Purpose: Gout, due to the presence of monosodium urate crystals (MSU) and calcium pyrophosphate (CPP) crystal deposition disease are both responsible for recurrent inflammation flares.…
Abstract Number: 1702 • ACR Convergence 2024
Placental Developmental Defects in a Humanized-TLR8 Mouse Model of Spontaneous Anti-Phospholipid Antibody Induced Pregnancy Loss
Yunwei Xia¹, Naomi I. Maria², Zhengzi Yi³, Chirag Raparia⁴, Gayathri Konanur Gopikrishna¹, Weijia Zhang³ and Anne Davidson², ¹Feinstein Institutes for Medical Research, Manhasset, ²Feinstein Institutes for Medical Research, Manhasset, NY, ³Mt. Sinai School of Medicine, New York, NY, ⁴Donald and Barbara Zucker School of Medicine At Hofstra/Northwell, Shoreham, NY
Background/Purpose: Antiphospholipid antibodies (aPL) confer a high risk for adverse pregnancy outcomes, especially in women with SLE. aPLs can induce pro-inflammatory signaling via TLR8 receptors,…
Abstract Number: 0746 • ACR Convergence 2024
Single-cell RNA-Seq Analysis Reveals Distinct Compositional Characterizations and Transcriptomic Profiles of Macrophages in Takayasu’s Arteritis
Lihong du¹, Chenglong Fang², shang Gao³, zuoguan Chen³ and Yongjun Li³, ¹Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Beijing, China, ²Department of Rheumatology, Second Affiliated Hospital of Fujian Medical University, Quanzhou, China (People's Republic), ³Department of Vascular Surgery, Beijing Hospital, National Center of Gerontology, Beijing, China
Background/Purpose: Macrophages play key roles in the pathogenesis of various inflammatory vascular diseases, such as Takayasu’s arteritis (TAK) and atherosclerosis. However, limited data on the…
Abstract Number: 1793 • ACR Convergence 2024
SLE Patient Serum and SLE-associated Danger Signals Impair Efferocytosis in Human Macrophages
Jessica Shannon and Rafael de Queiroz Prado, AstraZeneca, Gaithersburg, MD
Background/Purpose: Efficient clearance of apoptotic cells, known as efferocytosis, plays a pivotal role in maintaining self-tolerance. Dysfunction in efferocytosis is implicated in the pathogenesis of…
Abstract Number: 0889 • ACR Convergence 2023
Axl Receptor Tyrosine Kinase Ameliorates Pristane Induced Diffuse Alveolar Hemorrhage in Mice by Regulating Macrophage Polarization
Wenwen Pei¹, Ranran Yao¹, Ziye Wang², Ruyu Liang³, Renge Liang², Xiaolin Sun⁴ and Yin Su², ¹Peking University, Beijing, China, ²Peking University People's Hospital, Beijing, China, ³Peking University, XiCheng, China, ⁴Peking University People’s Hospital, Beijing, China
Background/Purpose: Diffusealveolar hemorrhage (DAH) is an infrequent but life-threatening complication in patients with systemic lupus erythematosus (SLE). Cells of the monocyte/macrophage lineage are essential to…
Abstract Number: 2369 • ACR Convergence 2023
Investigating Macrophage Heterogeneity in the Esophagus of SSc Patients
Hadijat Makinde¹, Matthew Dapas², Salina Dominguez², Tyler Therron¹, Miranda Gurra¹, Mary Karns³, Kathleen Aren³, Alexandra Soriano², Lutfiyya Muhammad⁴, Carla Cuda¹, Dustin Carlson¹, Jane Dematte⁵, Darren Brenner¹, John Pandolfino⁶, Harris Perlman¹, Deborah Winter⁷ and Marie-Pier Tetreault¹, ¹Northwestern University, Chicago, IL, ²Northwestern University FSM Division of Rheumatology, Chicago, IL, ³Northwestern University Division of Rheumatology, Chicago, IL, ⁴Northwestern University Feinberg School of Medicine, Chicago, IL, ⁵Northwestern University, Elmhurst, IL, ⁶Northwestern University, Feinberg School of Medicine, Wilmette, IL, ⁷Northwestern University, Skokie, IL
Background/Purpose: Systemic sclerosis (SSc) is characterized by an initial inflammatory phase followed by fibrosis. Esophageal dysfunction in SSc is associated with Gastroesophageal Reflux Disease (GERD),…
Abstract Number: 0890 • ACR Convergence 2023
Specificity of Brain-Intrinsic and Hematopoietic-Derived Mechanisms in Mediating Neuropsychiatric Symptoms of Systemic Lupus Erythematosus
Hadijat Makinde, Yidan Wang, Stumpf Cecilia and Carla Cuda, Northwestern University, Chicago, IL
Background/Purpose: Systemic lupus erythematosus (SLE) is a complex autoimmune disease that affects multiple end organs including the brain. Despite a prevalence of over 50% in…
Abstract Number: 2407 • ACR Convergence 2023
Immuno-permissive Antigen-presenting Cells in Giant Cell Arteritis
Shozo Ohtsuki¹, Chenyao Wang², Ryu Watanabe³, Hui Zhang³, Mitsuhiro Akiyama³, Kenneth Warrington⁴, Gerald J. Berry³, Jorg Goronzy⁴ and Cornelia M. Weyand⁵, ¹Mayo Clinic College of Medicine and Science, Stanford University School of Medicine, Rochester, MN, ²Mayo Clinic College of Medicine and Science, Rochester, MN, ³Stanford University School of Medicine, Stanford, CA, ⁴Mayo Clinic, Rochester, MN, ⁵Mayo Clinic School of Medicine and Stanford University, Rochester, MN
Background/Purpose: Giant cell arteritis (GCA) is a medium and large vessel vasculitis with pathognomonic granulomatous infiltrates in the vessel wall. During the early stages of…

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