Journal
ENVIRONMENTAL RESEARCH
Volume 236, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2023.116850
Keywords
Atopic dermatitis; Azelaic acid; Inflammation; Topical delivery; Snedds; Nanomedicine; Skin permeation
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The study aimed to prepare and optimize SNEDDS loaded with azelaic acid (AzA) using a pseudo ternary phase diagram, which was then incorporated into Carbopol 940 hydrogel for treating atopic dermatitis. The composition was evaluated for various parameters, and the optimized preparation showed favorable properties. The SNEDDS hydrogel demonstrated higher permeation rate through rat skin compared to a marketed formulation, and it did not cause skin irritation.
Atopic dermatitis is one of the most widespread chronic inflammatory skin conditions that can occur at any age, though the prevalence is highest in children. The purpose of the current study was to prepare and optimize the azelaic acid (AzA) loaded SNEDDS using Pseudo ternary phase diagram, which was subsequently incorporated into the Carbopol 940 hydrogel for the treatment of atopic dermatitis. The composition was evaluated for size, entrapment efficiency, in vitro, ex vivo, and in vivo studies. The polydispersity index of the optimized preparation was found to be less than 0.5, and the size of the distributed globules was found to be 151.20 & PLUSMN; 3.67 nm. The SNEDDS hydrogel was characterized for pH, viscosity, spreadability, and texture analysis. When compared to the marketed formulation, SNEDDS hydrogel was found to have a higher rate of permeation through the rat skin. In addition, a skin irritation test carried out on experimental animals showed that the SNEDDS formulation did not exhibit any erythematous symptoms after a 24-h exposure. In conclusion, the topical delivery of AzA through the skin using SNEDDS hydrogel could prove to be an effective approach for the treatment of atopic dermatitis.
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