Abstract Number: 2440 • ACR Convergence 2023
Synovial Shaping of Skin-derived Migrating Immune Cells Determines Initiation of Inflammation in Psoriatic Arthritis
Background/Purpose: Around 30% of the patients with psoriasis (PsO) develop psoriatic arthritis (PsA) overtime, suggesting the existence of a disease mediated skin-joint crosstalk. To date,…Abstract Number: 0905 • ACR Convergence 2023
Low-Density Granulocytes and Neutrophil Extracellular Traps in Incomplete Systemic Lupus Erythematosus
Background/Purpose: Incomplete SLE (iSLE) defines a group of patients with symptoms typical of SLE but not meeting sufficient criteria required for the classification of SLE.…Abstract Number: 2442 • ACR Convergence 2023
Neutrophils Induce Contact-Dependent Expansion of Arthritogenic Th17 Cells and Are Necessary for Disease in Experimental Ankylosing Spondylitis
Background/Purpose: Ankylosing spondylitis (AS) patients have irregular neutrophil responses, as indicated clinically by neutrophilia and increased neutrophil to lymphocyte ratios that positively associate with disease…Abstract Number: 0911 • ACR Convergence 2023
Spatial Transcriptomics Reveals Normal-density and Low-density Neutrophils Are More Prevalent Than Macrophages in Lupus Nephritis Glomeruli, and Urine DNA Methylation Analyses Capture Both Myeloid Populations
Background/Purpose: Despite compelling evidence that normal-density (NDN) and low-density neutrophils (LDN) are activated in the blood of lupus patients, their role in lupus nephritis (LN)…Abstract Number: 2600 • ACR Convergence 2023
Clonal Hematopoiesis Is Associated with Giant Cell Arteritis
Background/Purpose: Giant cell arteritis (GCA) is an age-related vasculitis of large and medium vessels. Prior population studies have identified an association between GCA and hematologic…Abstract Number: 0920 • ACR Convergence 2023
Proinflammatory Neutrophils and NETs Mediate Skin and Kidney Inflammation During Lupus Flare in Asymptomatic Lupus-prone Mice Triggered by UVB
Background/Purpose: Ultraviolet B (UVB) exposure triggers lupus flare by worsening both skin lesions and systemic symptoms, i.e. lupus nephritis. We recently reported that UVB exposure…Abstract Number: 0040 • ACR Convergence 2023
Non-canonical NF-κB Signalling Is Required for Extrathymic AIRE Expression and Immunoregulatory Molecules in Cells of the Dendritic Lineage
Background/Purpose: The transcription factor Autoimmune Regulator (AIRE) is crucial for the establishment of central tolerance in the thymus. Recently, peripheral CD45+ extrathymic AIRE-expressing cells (eTACs)…Abstract Number: 0940 • ACR Convergence 2023
A Novel Therapeutic Opportunity in Systemic Sclerosis: The Fibrolytic Activities of a Specialized Macrophage Secretome
Background/Purpose: Systemic sclerosis (SSc) a complex and rare immune-mediated connective tissue disorder characterized by microvascular damage, inflammatory cell infiltration, and excessive deposition of extracellular matrix…Abstract Number: 0041 • ACR Convergence 2023
Interactions Between Synovial Fibroblasts and Macrophages: Implications for Tissue Remodeling in Chronic Inflammatory Diseases and Macrophage Differentiation in Response to the Immune Microenvironment
Background/Purpose: Activated macrophages (Mph) can be subdivided in at least 2 major subgroups according to their polarization into classical pro-(M1-Mph) or anti-inflammatory (M2-Mph) subtypes. Together…Abstract Number: 0947 • ACR Convergence 2023
Fcγ Receptors Define Pro-Phagocytic Macrophages and Trigger Pro-Inflammatory Responses in Patients with Systemic Sclerosis
Background/Purpose: Fcy receptors (FcγR) are opsonic phagocytic receptors, requiring tight regulations to prevent uncontrolled activation of pro-inflammatory phagocytosis. SSc macrophages display an alternatively-activated profibrotic phenotype.…Abstract Number: 0049 • ACR Convergence 2023
Soluble Uric Acid Is an Endogenous Inhibitor of CD38
Background/Purpose: CD38 is the main NAD+-degrading enzyme that plays a key role in innate immunity, aging, cancer, and metabolic disorders. Pharmacological inhibition of CD38 has…Abstract Number: 1329 • ACR Convergence 2023
R851, a Potent Second Generation IRAK1 and IRAK4 Inhibitor Suppresses IL-6 in Vitro and in Vivo for the Treatment of Rheumatoid Arthritis
Background/Purpose: The Toll-Like Receptor family (except TLR3) signal through IRAK4 and IRAK1 to produce an array of cytokines (including IL-6, IL-23 and TNFα in response…Abstract Number: 127 • 2023 Pediatric Rheumatology Symposium
What’s in a Name? A20 Protein Expression in an in Vitro Model of A20 Haploinsufficiency
Background/Purpose: Tumor necrosis factor alpha (TNF-alpha) induced protein 3 gene, or TNFAIP3, encodes the A20 protein, an important regulator of the NF-κB pathway. Since its…Abstract Number: 0148 • ACR Convergence 2022
Dysferlin Associated Autoinflammatory Disease Causing Systemic Inflammation and Sterile Lung Abcesses Through Impaired Efferocytosis
Background/Purpose: Using whole exome sequencing (WES), we identified a de novo mutation in DYSF encoding dysferlin in 2 unrelated patients with systemic inflammation and sterile…Abstract Number: 1695 • ACR Convergence 2022
Dermatomyositis (DM) Macrophages Upregulate Genes Involved in the Remodeling of the Extracellular Matrix and Activate Keratinocytes in a Novel 3D Tissue Model of DM Skin Disease
Background/Purpose: With an incidence of 10 cases per million and lack of animal or ex vivo disease models, dermatomyositis (DM) remains a debilitating disease without…
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