RT Journal Article T1 LPS in combination with amoxicillin increases BAT sensitivity to amoxicillin IgE‐mediated hypersensitivity A1 Céspedes Lagos, José Antonio A1 Fernández-Santamaría, Rubén A1 Bogas Herrera, Gádor A1 Ariza Veguillas, Adriana A1 Doña, Inmaculada A1 Salas, María A1 Labella, Marina A1 Fernández-Duarte, Tahía Diana A1 Mayorga Mayorga, Cristobalina A1 Torres-Jaén, María Josefa A1 Frecha, Cecilia K1 Alergia a los medicamentos K1 Antibióticos - Efectos secundarios AB β-lactams (BLs), and among them, amoxicillin (AX) are the most current prescribed antibiotics to treat bacterial infections,1 and their use is related to an increasing prevalence of drug hypersensitivity reactions (DHRs),2 being mainly immediate IgE-mediated, allergic reactions.3 The basophil activation test (BAT) is a currently accepted complementary in vitro tool to detect these reactions to BLs, however its sensitivity is far from optimal, ranging from 20% to 55%, with specificities of 90%–95%.4 This limitation can be explained, in part, by the small size of drugs that make them behave as haptens, and/or the need for other elements, that were present during the sensitization and/or acute phase of the reaction, and absent in the sample at resolution phase and, therefore, in the in vitro tests. In the context of BL intake during an infection, pathogen-associated molecular patterns (PAMP) can interact with Toll-like receptors (TLR) on immune cell surfaces to potentially stimulate proinflammatory cytokine production and contribute to basophil degranulation.5 In this study, we evaluated whether TLR ligand (TLR-L) interaction together to AX increased BAT sensitivity. PB Wiley YR 2024 FD 2024 LK https://hdl.handle.net/10630/31233 UL https://hdl.handle.net/10630/31233 LA eng NO Céspedes, J.A., Fernández-Santamaría, R., Bogas, G., Veguillas, A.A., Doña, I., Salas, M., Labella, M., Fernández Duarte, T.D., Mayorga, C., Torres, M.J. and Frecha, C.A. (2024), LPS in combination with amoxicillin increases BAT sensitivity to amoxicillin IgE-mediated hypersensitivity. Allergy. https://doi.org/10.1111/all.16133 NO Funding for open access charge: Universidad de Málaga / CBUA DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026