Effective Mosquito Repellents: Myrcene- and Cymene-Loaded Nanohydrogels against Aedes aegypti

Autor: Jonatas Lobato Duarte, Leonardo Delello Di Filippo, Tais de Cássia Ribeiro, Ana Carolina de Jesus Silva, Lorane Izabel da Silva Hage-Melim, Stéphane Duchon, David Carrasco, Mara Cristina Pinto, Vincent Corbel, Marlus Chorilli
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Pharmaceutics, Vol 16, Iss 8, p 1096 (2024)
Druh dokumentu: article
ISSN: 1999-4923
DOI: 10.3390/pharmaceutics16081096
Popis: Aedes mosquito-borne diseases remain a significant global health threat, necessitating effective control strategies. This study introduces monoterpenes-based nanohydrogels for potential use as repellents against Aedes aegypti, the primary dengue vector worldwide. We formulated hydrogels using cymene- and myrcene-based nanoemulsions with different polymers: chitosan, carboxymethylcellulose (CMC), and carbopol®. Our evaluations of rheological, texture, and bioadhesive properties identified CMC hydrogel as the most promising gelling agent for topical application, exhibiting sustained monoterpene release over 12 h with low skin permeation and high retention in the stratum corneum. Myrcene-loaded CMC hydrogel achieved a 57% feeding deterrence compared to 47% with cymene hydrogel in the mosquito membrane-feeding model. Molecular docking studies revealed interactions between myrcene and an essential amino acid (Ile116) in the Ae. aegypti odorant-binding protein 22 (AeOBP22), corroborating its higher repellent efficacy. These findings suggest that myrcene-loaded CMC hydrogels offer a promising, minimally invasive strategy for personal protection against Ae. aegypti and warrant further investigation to optimize monoterpene concentrations for vector control.
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