RT Journal Article T1 Contributing to the management of viral infections through simple immunosensing of the arachidonic acid serum level A1 Torrente Rodríguez, Rebeca Magnolia A1 Ruiz Valdepeñas Montiel, Víctor A1 Iftimie, Simona A1 Montero Calle, Ana A1 Pingarrón Carrazón, José Manuel A1 Castro, Antoni A1 Camps, Jordi A1 Barderas Manchado, Rodrigo A1 Campuzano Ruiz, Susana A1 Joven, Jorge AB A trendsetting direct competitive-based biosensing tool has been developed and implemented for the determination of the polyunsaturated fatty acid arachidonic acid (ARA), a highly significant biological regulator with decisive roles in viral infections. The designed methodology involves a competitive reaction between the target endogenous ARA and a biotin-ARA competitor for the recognition sites of anti-ARA antibodies covalently attached to the surface of carboxylic acid-coated magnetic microbeads (HOOC-MμBs), followed by the enzymatic label of the biotin-ARA residues with streptavidin-horseradish peroxidase (Strep-HRP) conjugate. The resulting bioconjugates were magnetically trapped onto the sensing surface of disposable screen-printed carbon transducers (SPCEs) to monitor the extent of the biorecognition reaction through amperometry. The operational functioning of the exhaustively optimized and characterized immunosensing bioplatform was highly convenient for the quantitative determination of ARA in serum samples from severe acute respiratory syndrome coronavirus 2 (SARSCoV-2-) and respiratory syncytial virus (RSV)-infected individuals in a rapid, affordable, trustful, and sensitive manner. PB Springer YR 2024 FD 2024-06-04 LK https://hdl.handle.net/20.500.14352/123885 UL https://hdl.handle.net/20.500.14352/123885 LA eng NO Torrente-Rodríguez, R.M., Ruiz-Valdepeñas Montiel, V., Iftimie, S. et al. Contributing to the management of viral infections through simple immunosensing of the arachidonic acid serum level. Microchim Acta 191, 369 (2024). https://doi.org/10.1007/s00604-024-06440-y NO MCIN/AEI/https://doi.org/10.13039/501100011033 NO ERDF A way of making Europe NO AES-ISCIII program NO FEDER NO La Fundació Marató de TV3 NO CRUE-CSIC DS Docta Complutense RD 27 mar 2026