RT Journal Article T1 Serum autoantibody biomarkers for management of rheumatoid arthritis disease A1 Sánchez Tirado, Esther A1 Agüí Chicharro, María Lourdes A1 Sánchez-Paniagua López, Marta A1 González Cortés, Araceli A1 López Ruiz, María Beatriz A1 Yáñez-Sedeño Orive, Paloma A1 Pingarrón Carrazón, José Manuel AB Rheumatoid arthritis (RA) is a systemic chronic autoimmune inflammatory disease that is characterized by the destruction of bone and production of autoantibodies such as rheumatoid factor (RF) and anticitrullinated protein antibodies (ACPAs). The high prevalence of this disease and the need of affordable tools for its early detection led us to prepare the first electrochemical immunoplatform for the simultaneous determination of four RA biomarkers, the autoantibodies: RF, anti-peptidyl-arginine deiminase enzyme (anti-PAD4), anti-cyclic citrullinated peptide (anti-CCP), and anti-citrullinated vimentin (anti-MCV). Functionalized magnetic beads (MBs) were used to immobilize the specific antigens, and sandwich-type immunoassays were implemented for the amperometric detection of the four autoantibodies, using the horseradish peroxidase (HRP)/H2O2/hydroquinone (HQ) system. The immunoplatform was applied to the determination of the biomarkers in human serum of twenty-two patients diagnosed with RA and four healthy individuals, and the results were validated against ELISA tests and the certified values. PB MDPI SN 2079-6374 YR 2023 FD 2023 LK https://hdl.handle.net/20.500.14352/92755 UL https://hdl.handle.net/20.500.14352/92755 LA eng NO Sánchez-Tirado E, Agüí L, Sánchez-Paniagua M, González-Cortés A, López-Ruiz B, Yáñez-Sedeño P, et al. Serum autoantibody biomarkers for management of rheumatoid arthritis disease. Biosensors (Basel). 2023 Mar 13; 13(3): 381-94 NO Ministerio de Ciencia e Innovación (España) NO Comunidad de Madrid DS Docta Complutense RD 20 abr 2025