RT Journal Article T1 Polymeric Nanoparticles and Chitosan Gel Loading Ketorolac Tromethamine to Alleviate Pain Associated with Condyloma Acuminata during the Pre- and Post-Ablation. A1 El Moussaoui, Salima A1 Abo-Horan, Ismael A1 Halbaut, Lyda A1 Alonso, Cristina A1 Coderch, Lluïsa A1 Garduño-Ramírez, María Luisa A1 Clares, Beatriz A1 Soriano, José Luis A1 Calpena, Ana Cristina A1 Fernández-Campos, Francisco A1 Mallandrich, Mireia K1 Condyloma acuminata K1 PLGA nanoparticles K1 anti-inflammatory K1 chitosan gel K1 ketorolac tromethamine K1 topical delivery AB This study describes the preparation and evaluation of two formulations, a hydrogel and a nanostructured system, containing ketorolac tromethamine as an anti-inflammatory agent for the local therapy against the inflammatory process derived from the surgical excision of Condyloma acuminata. Both formulations were physicochemically characterized. In vitro release profiles show that the nanoparticles release 92% ± 2.3 of the total ketorolac tromethamine encapsulated, while the chitosan gel releases 18.6% ± 0.2. The ex vivo permeation and distribution through human skin were also assayed and was observed how the main amount of ketorolac tromethamine is retained in the epidermis. In vivo studies were accomplished to evaluate the anti-inflammatory efficacy in mice which also involved the histological analysis to confirm the in vivo results. The nanoparticles present a significantly higher anti-inflammatory efficacy than chitosan gel. The tolerability of developed formulations was assessed by monitoring the biomechanical properties of the skin before and after application of both formulations. No statistical differences in trans-epidermal water loss and skin hydration with respect to the basal values were observed and the formulations exhibited higher anti-inflammatory activity compared to a reference ketotorlac tromethamine solution. Therefore, it can be concluded that both formulations can be proposed as outstanding candidates for offering a local anti-inflammatory therapeutical tool with potential clinical application. SN 1999-4923 YR 2021 FD 2021-10-25 LK https://hdl.handle.net/10668/26110 UL https://hdl.handle.net/10668/26110 LA en DS RISalud RD Apr 5, 2025