Abstract Number: 1094 • 2015 ACR/ARHP Annual Meeting
Increased IgA Plasmablasts Are Associated with Rheumatoid Arthritis-Related Autoantibodies in the Absence of Inflammatory Arthritis
Background/Purpose: Rheumatoid Arthritis (RA) autoimmunity starts years before clinically apparent inflammatory arthritis (IA) develops, and elevated disease-specific autoantibodies, including anti-citrullinated protein antibodies (ACPA) and rheumatoid…Abstract Number: 1095 • 2015 ACR/ARHP Annual Meeting
Identification of Carbamylated Alpha-1-Anti-Trypsin (A1AT) As an Antigenic Target of Anti-Carp Antibodies in Patients with Rheumatoid Arthritis
Background/Purpose: Antibodies targeting carbamylated proteins (anti-CarP) were recently identified in serum samples from patients with rheumatoid arthritis (RA). The presence of anti-CarP antibodies was associated…Abstract Number: 1096 • 2015 ACR/ARHP Annual Meeting
B Cells Are Prime Producers of Tumor Necrosis Factor Alpha in Rheumatoid Arthritis
Background/Purpose: Rheumatoid arthritis (RA) is a systemic autoimmune disease, which causes joint inflammation and bone loss. Inflammation-mediated joint damage is linked to the imbalance of…Abstract Number: 1097 • 2015 ACR/ARHP Annual Meeting
Pre-Clinical Development of a Novel, Potent and Selective BTK Inhibitor for Autoimmune Disease and Inflammation Including Arthritis
Background/Purpose: Bruton’s tyrosine kinase (BTK) is an important component of B cell and Fc receptor signaling and has been shown to be critical for B-cell…Abstract Number: 1098 • 2015 ACR/ARHP Annual Meeting
Interleukin-1 Reciprocally Regulates Interferon-Gamma Induced B Cell Activating Factor of the Tumor Necrosis Factor Family (BAFF) and Interleukin-6 in Human Synovial Fibroblasts
Background/Purpose: B cell activating factor of the tumor necrosis factor family (BAFF) and interleukin-6 (IL-6) are cytokines important for the stimulation and survival of autoreactive…Abstract Number: 1099 • 2015 ACR/ARHP Annual Meeting
Single Cell RNA-Seq Analysis of Citrullinated Alpha-Enolase Peptide-Specific B Cells in RA
Background/Purpose: The high prevalence of citrullinated protein antibodies and improvement following rituximab anti-CD20 therapy both suggest that B cells are important in the pathogenesis of…Abstract Number: 1100 • 2015 ACR/ARHP Annual Meeting
Citrullinated Antigen-Specific B Cells in Peripheral Blood and Synovial Fluid of Patients with Rheumatoid Arthritis: Identification and Phenotypic Characterization
Background/Purpose: Rheumatoid arthritis (RA) is characterized by the presence of anti-citrullinated protein antibodies (ACPA) in the majority of patients. ACPA represent highly disease-specific biomarkers that…Abstract Number: 1101 • 2015 ACR/ARHP Annual Meeting
Matrix Metalloproteinase-10 (Stromelysin 2) Is a Target of Robust Autoimmune T and B Cell Responses in Antibiotic-Refractory Lyme Arthritis, but Not in Rheumatoid Arthritis
Background/Purpose: Infection-induced autoimmunity has been hypothesized to have a pathogenic role in antibiotic-refractory Lyme arthritis (LA). We previously identified 3 autoantigens, endothelial cell growth factor,…Abstract Number: 1102 • 2015 ACR/ARHP Annual Meeting
CD19+CD24-CD38hi B-Cell Subset: A Potential Biomarker for IgG4-Related Disease
Background/Purpose: To investigate a B-cell subpopulation, exhibiting CD19+CD24-CD38hi phenotype, can be a biomarker for diagnosis and disease activity in IgG4 related disease (IgG4-RD). Methods: Circulating…Abstract Number: 1103 • 2015 ACR/ARHP Annual Meeting
Phosphatidylserine Outer Layer Translocation Is Implicated in IL-10 Secretion By Human Regulatory B Cells
Background/Purpose: B cells can have a negative regulatory role, mainly mediated by interleukin 10 (IL-10) and we recently showed that IL-10 producing B cells (B10…Abstract Number: 1104 • 2015 ACR/ARHP Annual Meeting
Mouse B Cells Require Glucose and Free Fatty Acids As Carbon Sources for Cytokine and Chemokine Secretion
Background/Purpose: B cells contribute to disease pathophysiology through several mechanisms, including cytokine and chemokine secretion. A wide variety of stimuli can activate B cells including…Abstract Number: 1105 • 2015 ACR/ARHP Annual Meeting
The IgG/IgG4 mRNA Ratio By Quantitative PCR Accurately Diagnoses IgG4-Related Disease and Predicts Treatment Response
Background/Purpose : IgG4-associated cholangitis (IAC) and autoimmune pancreatitis (AIP) are major manifestations of IgG4-related disease (IRD). Misdiagnosis and inadequate treatment are common since IAC and…Abstract Number: 1106 • 2015 ACR/ARHP Annual Meeting
Efficacy of Abbv-105, a Selective and Irreversible Inhibitor of Bruton’s Tyrosine Kinase (BTK), in Multiple Models of Inflammation
Background/Purpose: Bruton’s Tyrosine Kinase (BTK) is a non-receptor tyrosine kinase required for intracellular signaling pathways downstream of several key immunoreceptors, including the B cell receptor,…Abstract Number: 1107 • 2015 ACR/ARHP Annual Meeting
Inhibition of B Cell Activation and Plasma Cell Differentiation By Epratuzumab, a Humanized Monoclonal Antibody Targeting CD22
Background/Purpose: Systemic lupus erythematosus (SLE) is characterized by B cell hyperactivity and production of autoantibodies. Treatment of patients with moderate-to-severe SLE with epratuzumab, a humanized…Abstract Number: 1108 • 2015 ACR/ARHP Annual Meeting
Epratuzumab, a Monoclonal Antibody Targeting CD22 on B Cells, Stimulates the Phosphorylation of Upstream Inhibitory Signals of the B Cell Receptor
Background/Purpose: Epratuzumab, a humanized monoclonal antibody targeting CD22, is currently in phase 3 clinical trials in patients with systemic lupus erythematosus (SLE). Previous work suggests…
ACR Meeting Abstracts