TY - JOUR T1 - Baseline Serum Concentrations of TRAIL in Early Rheumatoid Arthritis: Relationship with Response to Disease-modifying Antirheumatic Drugs JF - The Journal of Rheumatology JO - J Rheumatol DO - 10.3899/jrheum.091363 SP - jrheum.091363 AU - Paola Secchiero AU - Federica Corallini AU - Gabriella Castellino AU - Alessandra Bortoluzzi AU - Lorenzo Caruso AU - Serena Bugatti AU - Raffaella Bosco AU - Maurizio Montecucco AU - Francesco Trotta Y1 - 2010/05/15 UR - http://www.jrheum.org/content/early/2010/05/12/jrheum.091363.abstract N2 - Objective To assess the relationship between serum concentrations of tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) and osteoprotegerin (OPG) and the therapeutic response to disease-modifying antirheumatic drugs (DMARD) in patients with early rheumatoid arthritis (RA). Methods Circulating levels of TRAIL and its soluble receptor OPG were measured by ELISA in paired serum samples obtained from 66 patients with early RA at their first visit (baseline) and after 1 year of therapy. Levels of TRAIL and OPG were analyzed in relation to the clinical response, defined by the 28-joint count Disease Activity Score (DAS28). Results Both serum TRAIL and OPG increased after DMARD therapy. Baseline levels of TRAIL, but not OPG, were significantly higher (p < 0.05) in the patients that achieved a clinical response by DAS28 after 1 year of therapy, versus patients without clinical response to DMARD. Baseline serum levels of TRAIL were higher (p < 0.01) in rheumatoid factor-negative patients. Conclusion Our data suggest that the basal level of circulating TRAIL is an important determinant in the therapeutic response to DMARD in patients with early RA. ER -