Abstract Number: 1499 • ACR Convergence 2021
Imbalance Between T Follicular Cells and T Regulatory Cells Involved in High Fat-Diet Associated Lupus Development in MRL/lpr Mice
Background/Purpose: Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease characterized by persistent inflammation and production of autoantibodies, which deposit within numerous tissues leading to…Abstract Number: 1507 • ACR Convergence 2021
Role of CD4+ T Cells in the Pathogenesis of RA: Immunization with Citrullinated T Cell Epitopes Is Sufficient to Induce Immunological and Clinical Manifestations of Arthritis in DR4-Transgenic Mice
Background/Purpose: Although the etiology of rheumatoid arthritis (RA) remains unclear, existing research suggests a complex interplay of both genetic and environmental factors. Citrullinated proteins/peptides, and…Abstract Number: 1508 • ACR Convergence 2021
Decrease of Angiogenic T Cells Associated to the Presence of Interstitial Lung Disease in Patients with Connective Tissue Diseases
Background/Purpose: Interstitial lung disease (ILD) is one of the most significant complications of connective tissue diseases (CTD) leading to an increase of the morbidity and…Abstract Number: 0021 • ACR Convergence 2021
Unique Alterations in Circulating T Peripheral Helper Cells Are Found in Different Ethnic Groups of ACPA+ Individuals Both At-risk for and with Classified RA
Background/Purpose: Production of autoantibodies following pathogenic T and B cell interactions precede the development of RA. T follicular helper (Tfh) cells and T peripheral helper…Abstract Number: 1511 • ACR Convergence 2021
Investigation of Antigen Specific CD4+ T Cells in Patients with Idiopathic Inflammatory Myopathies
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: 0066 • ACR Convergence 2021
Characterization of αβTCR of HLA-B*27-Restricted CD8 T-Cell Clones Associated with Spondyloarthropathies
Background/Purpose: The mechanism by which HLA-B27 induces Ankylosing Spondylitis (AS) and related disease is unknown, but a leading hypothesis is that it presents ‘arthritogenic epitopes’…Abstract Number: 1512 • ACR Convergence 2021
Epigenetic and Transcriptional Programs of CD4+ T Cell Anergy
Background/Purpose: T cell tolerance is essential for preventing autoimmune diseases and resolving inflammation. To maintain tolerance, CD4+ T cells recognizing self-antigens in the periphery can…Abstract Number: 0322 • ACR Convergence 2021
Histopathological Changes in Parotid and Labial Salivary Gland Tissue in Primary Sjögren’s Syndrome Patients After Abatacept Treatment
Background/Purpose: In a previous open-label phase II study, we showed that abatacept treatment might inhibit local formation of autoreactive memory B cells in parotid glands…Abstract Number: 1513 • ACR Convergence 2021
Control of T Cell Tolerance by the NR4A Family of Nuclear Receptors
Background/Purpose: Current therapies for autoimmune disease often lead to treatment-limiting immunosuppression. Selective manipulation of antigen (Ag)-specific immune responses could enhance our therapeutic approach. Targeting members…Abstract Number: 0547 • ACR Convergence 2021
Autologous Haematopoietic Stem Cell Transplantation for Systemic Sclerosis Results in Sustained Changes in Immunoregulatory T and NK Cells
Background/Purpose: Autologous Haematopoietic Stem Cell Transplantation (AHSCT) is an effective treatment for severe systemic sclerosis (SSc). To date, mechanistic studies have indicated possible pro-regulatory and…Abstract Number: 1514 • ACR Convergence 2021
Age-related Metabolic Reprogramming of Memory CD4+ T Cells Is Associated with Reactive Oxygen Species-induced Immune Cell Dysfunction
Background/Purpose: Inflamm-aging is a sterile, low-grade, chronic systemic inflammatory state characterized by an increase in proinflammatory cytokines involved in the development of most age-related diseases…Abstract Number: 0692 • ACR Convergence 2021
Immunophenotyping of Inclusion Body Myositis Blood T Cells: Pathogenic and Biomarker Implications
Background/Purpose: The recent discovery of highly differentiated, killer cell lectin-like receptor subfamily G member 1 (KLRG1)+ T cells in the muscle of inclusion body myositis…Abstract Number: 1750 • ACR Convergence 2021
Itolizumab, a Novel anti-CD6 Therapy, in Systemic Lupus Erythematosus Patients: Interim Safety Results from the Phase 1b EQUALISE Dose-escalation Study
Background/Purpose: CD6, a co-stimulatory receptor predominantly expressed on T cells, promotes CD4+ T cell proliferation and differentiation into Th1/Th17 cells. The CD6 ligand, activated leukocyte…Abstract Number: 0693 • ACR Convergence 2021
Discovery of Antigen Specific CD4+ T Cells in Anti-HMGCR-positive Immune Mediated Necrotizing Myopathy
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: 0947 • ACR Convergence 2021
Cytokine Competent Gut-joint Migratory T Cells Contribute to Inflammation in the Joint
Background/Purpose: Although studies have identified the presence of gut-associated cells in the enthesis of joints affected by spondyloarthritis, a direct link through cellular transit between…
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