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DNA macroarray study of skin aging-related genes expression modulation by antioxidant plant extracts on a replicative

Stéphanie Dudonné1, Philippe Coutière, Marion Woillez

  • 1Biolandes, Route de Bélis, 40420 Le Sen, France.

Phytotherapy Research : PTR
|November 16, 2010
PubMed

Insights

Antioxidant extracts from oak, mate, and benjoin show promise for anti-aging. They help protect skin cells from oxidative stress and regulate key aging markers, suggesting potential use in anti-aging formulations.

Area of Science:

  • Dermatology and Cosmetology
  • Biochemistry and Molecular Biology

Background:

  • Reactive oxygen species (ROS) drive skin aging by overwhelming endogenous antioxidant defenses, leading to oxidative stress and cellular damage.
  • Oxidative stress accelerates aging processes, compromising skin structure and function.
  • Antioxidant compounds are crucial for mitigating oxidative stress by neutralizing free radicals.

Purpose of the Study:

  • To identify key phenolic compounds in oak wood, mate leaf, and benjoin resin antioxidant extracts.
  • To evaluate the in vitro effects of these antioxidant extracts on skin aging markers.
  • To investigate the transcriptional impact of these extracts on cellular aging pathways.

Main Methods:

  • Phenolic compound identification in oak, mate, and benjoin extracts.
  • In vitro evaluation of extract effects on normal human dermal fibroblasts (NHDF) undergoing replicative senescence.
  • Utilized a customized DNA macroarray to analyze gene expression related to aging markers (dermal structure, cell renewal, inflammation, oxidative stress).

Main Results:

  • Identified main phenolic compounds in the three antioxidant extracts.
  • Observed significant regulation of five key genes involved in inflammatory response, cell renewal, and antioxidant defenses among 149 detected genes.
  • Demonstrated that the collective transcriptional effects of the extracts suggest notable anti-aging properties.

Conclusions:

  • Oak wood, mate leaf, and benjoin resin extracts possess significant antioxidant and anti-aging properties.
  • These extracts modulate key cellular pathways involved in skin aging.
  • The findings support the potential application of these natural extracts in nutraceutical anti-aging formulations.

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