Abstract
Sesamol, a lignan, obtained from sesame seeds (Sesamum indicum Linn., Pedaliaciae) has a promising antioxidant, and anti-inflammatory profile. When applied topically, free sesamol rapidly crosses skin layers and gets absorbed in systemic circulation. Its encapsulation into solid lipid nanoparticles not only improved its localised delivery to skin but also resulted in better skin retention, as found in ex-vivo skin retention studies. Free and encapsulated sesamol was compared for antimicrobial and antibiofilm activity against some common skin pathogens and it was found that encapsulation improved the antimicrobial profile by 200%. In vivo evaluation in diabetic open excision wound model suggested that encapsulation of sesamol in SLNs substantially enhanced its wound healing potential when investigated for biophysical, biochemical and histological parameters. It was envisaged that this was achieved via inhibiting bacterial growth and clearing the bacterial biofilm at the wound site, and by regulating oxidative stress in skin tissue.
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