Curcumin Protects Skin against UVB-Induced Cytotoxicity via the Keap1-Nrf2 Pathway: The Use of a Microemulsion Delivery System

Maya Ben Yehuda Greenwald, Marina Frušić-Zlotkin, Yoram Soroka, Shmuel Ben Sasson, Ronit Bitton, Havazelet Bianco-Peled, Ron Kohen

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Curcumin was found to be beneficial in treating several skin pathologies and diseases, providing antioxidant protection due to its reducing properties and its electrophilic properties (the ability to activate the Nrf2 pathway and induce phase II cytoprotective enzymes). Nevertheless, clinical applications of curcumin are being hampered by its insufficient solubility, chemical instability, and poor absorption, leading to low efficacy in preventing skin pathologies. These limitations can be overcome by using a nanotechnology-based delivery system. Here, we elucidated the possibility of using curcumin encapsulated in a microemulsion preserving its unique chemical structure. We also examined whether curcumin microemulsion would reduce UVB-induced toxicity in skin. A significant curcumin concentration was found in the human skin dermis following topical application of a curcumin microemulsion. Moreover, curcumin microemulsion enhanced the reduction of UV-induced cytotoxicity in epidermal cells, paving the way for other incorporated electrophiles in encapsulated form protecting skin against stress-related diseases.

Original languageEnglish
Article number5205471
JournalOxidative Medicine and Cellular Longevity
Volume2017
DOIs
StatePublished - 1 Jan 2017

ASJC Scopus subject areas

  • Biochemistry
  • Aging
  • Cell Biology

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