The aim of this study was to analyse the effects of oligogalacturonides obtained from apple pectin enzymatic hydrolysis (mainly composed of galacturonic acid and oligogalacturonides; OGA) on normal human keratinocytes behaviour using different in vitro models. We demonstrate that 0.01% OGA promotes epidermal growth, organization and stratification in an in vitro reconstructed skin. The presence and the in vivo-like location of epidermal differentiation markers (i.e. keratin 10, involucrin, desmoglein 1 and 3, and cathepsin D) confirms the histological analysis, and underlines the cohesion of the treated epidermis. On the opposite, ...
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