Alkyl polyglucoside-based emulsions as vehicles for topical spironolactone: A textural analysis

Abstract

Acne vulgaris is a chronic dermatological disease that affects the pilosebaceous unit; androgens play an important role in its pathogenesis. Acne therapy can be either systemic or topical, usual in the treatment of mild and moderate forms of acne. Spironolactone (SP) is an anti-androgen drug with potential to reduce the sebum secretion; in order to avoid systemic side effects, it could be used topically in acne treatment. Nowadays, more and more attention is being paid to the textural profile of dermopharmaceutical emulsions, which is normally influenced by their colloidal structure; texture analysis is performed in order to predict behavior of the emulsion systems in real-time conditions during manufacturing and application; the latter is closely related to ensuring patients' compliance and the positive outcome of the therapy. We formulated emulsions stabilized with different natural alkyl polyglucoside (APG) emulsifiers (Cetearyl glucoside and cetearyl alcohol and Arachidyl glucoside and arachidyl behenyl alcohol) as vehicles for 5% topical SP. Parameters obtained by texture analysis were firmness and cohesiveness. The study showed that SP affected the texture of APG-based emulsion; different APG-based emulsions showed satisfying textural characteristics per se after incorporation of 5% SP, which could imply their satisfying applicative characteristics on the skin with acne. APGs could be used as stabilizers of emulsion vehicles for topical SP. Dermoemulsion with Arachidyl glucoside and arachidyl behenyl alcohol, more lypophillic emulsifier, is a more acceptable carrier for 5% SP due to a better textural profile.