Abstract
The aim of this study is to describe the development of nanoemulsion-loaded hydrogels to deliver pentyl gallate (PG), a gallic acid n-alkyl ester, through the skin. PG is an antioxidant agent; however, it seems to be a promising agent for herpis labialis treatment. Aristoflex AVC® and chitosan were used as gelling agents for nanoemulsion thickening. The developed formulations presented suitable PG content (94.4–100.3% w/w), nanometric droplet sizes (162–297 nm), high zeta potentials, and a non-Newtonian pseudoplastic behavior. Both vehicles neither enhanced PG penetration nor delayed its release from the nanoemulsion. Formulations remained physically stable at 8°C during 3 months of storage.
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Acknowledgements
The authors would like to express their grateful acknowledgments to CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) and CAPES/Rede Nanobiotec (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior).
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Kelmann, R.G., Colombo, M., Nunes, R.J. et al. Nanoemulsion-Loaded Hydrogels for Topical Administration of Pentyl Gallate. AAPS PharmSciTech 19, 2672–2678 (2018). https://doi.org/10.1208/s12249-018-1099-8
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DOI: https://doi.org/10.1208/s12249-018-1099-8