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A Natural Composite Extract Restores Skin Barrier Function by Modulating Inflammatory, Hydration, and Redox Pathways.

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A plant-based extract, PLCP, effectively reduces skin inflammation, itching, and oxidative stress in pediatric and adult keratinocytes. This extract also enhances skin hydration, showing promise for managing pediatric skin conditions.

Keywords:
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Area of Science:

  • Dermatology and Cosmeceutical Science
  • In Vitro Skin Biology
  • Plant-Based Therapeutics

Background:

  • Pediatric skin disorders often involve inflammation, itching, and oxidative stress.
  • Current treatments may have limitations, necessitating exploration of novel, safe alternatives.
  • Plant-derived compounds are increasingly investigated for dermatological applications.

Purpose of the Study:

  • To evaluate the efficacy of a novel composite plant extract (PLCP) on key skin health parameters.
  • To assess PLCP's effects on skin hydration, inflammation, itching, and oxidative stress.
  • To investigate potential age-dependent differences in keratinocyte response to PLCP.

Main Methods:

  • Utilized pediatric (NHEK) and adult (HaCaT) keratinocytes stimulated with lipopolysaccharide (LPS).
  • Assessed PLCP's impact on inflammation (TSLP, ET-1), itching, hydration (HAS), and oxidative stress (ROS, SOD) markers.
  • Employed rt-PCR, ELISA, ROS assays, and SOD activity measurements for comprehensive analysis.

Main Results:

  • PLCP significantly suppressed LPS-induced TSLP and ET-1 secretion/mRNA levels in both cell types.
  • PLCP dose-dependently upregulated hyaluronic acid synthase (HAS) mRNA, indicating enhanced hydration.
  • PLCP demonstrated potent antioxidant effects by decreasing ROS and increasing SOD activity.

Conclusions:

  • PLCP exhibits significant anti-inflammatory, anti-pruritic, moisturizing, and antioxidant properties in vitro.
  • Pediatric keratinocytes showed a more pronounced response to PLCP, suggesting age-specific efficacy.
  • PLCP presents a promising, safe, plant-based option for managing pediatric skin disorders.