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Type: Artigo de periódico
Title: Enhanced Photochemical Nitric Oxide Release From A Flutamide Derivative Incorporated In Pluronic F127 Micelles
Author: Taladriz-Blanco P.
De Oliveira M.G.
Abstract: The incorporation of nitric oxide (NO) photodonors into nontoxic vehicles may allow for the tunable control of topical NO release to treat pathological conditions associated with the impairment of NO production in the dermal vasculature. Pluronic F127 is a PEO-PPO-PEO triblock copolymer that is used as a nontoxic vehicle that undergoes thermally reversible micellization and gelation. In this study, we synthesized a thermally stable flutamide derivative, N-(3-aminopropyl)-3-(trifluoromethyl)-4-nitrobenzenamine (ATN), which is capable of releasing NO upon irradiation with visible light, as shown by real-time chemiluminescence NO detection. We demonstrated that the incorporation of ATN into the hydrophobic nuclei of F127 micelles leads to an enhancement of its photochemical NO release, which is consistent with the photodecomposition route associated with the nitro-to-nitrite photorearrangement of ATN. This mechanism underscores a new role of the F127 micelles as concentrating "nanoreactors" for hydrophobic NO releasing drugs. In this case, this effect may represent a new strategy for enhancing photochemical NO release from ATN, which makes the micellar F127/ATN solutions promising for topical NO application. © 2014 Elsevier B.V.
Editor: Elsevier
Rights: fechado
Identifier DOI: 10.1016/j.jphotochem.2014.07.022
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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