A convergent synthetic platform of hydrogels enclosing prednisolone-loaded nanoparticles for the treatment of chronic actinic dermatitis

ABSTRACT Recurrent eczematous lesions and acute itching describe chronic actinic dermatitis (CAD). Continuous use of corticosteroids might result in a dermal adverse effect. Chitosan (CS)-coated PLGA nanoparticles encapsulated prednisolone (PDS) and co-encapsulated to poloxamer hydrogel to enhance anti-inflammatory action and reduce side effects. The PDS@NPs were synthesized using the solvent-emulsification evaporation method, and their physical and chemical properties were analysed. Ex vivo drug absorption experiment was conducted utilizing the Franz diffusion cells in vitro. Toxic effects on human fibroblasts and keratinocytes were not observed in the nanoparticle formulations. Nanoparticles and hydrogels altered PDS’s release kinetics, but not by the non-encapsulated PDS (NE@PDS). Nanoparticles could not penetrate the stratum corneum of removed the skin, which shows the nano-encapsulation of PDS improved skin absorptions. Pseudoplastic and non-Newtonian behaviour was seen in all hydrogels. The nanoformulations appear to be a promising option for glucocorticoid delivery to individuals with chronic actinic dermatitis (CAD).