TELOMERE AND TELOMERASE MODULATION BY BERGAMOT POLYPHENOLIC FRACTION IN EXPERIMENTAL PHOTOAGEING IN HUMAN KERATINOCYTES

J Biol Regul Homeost Agents. 2015 Jul-Sep;29(3):723-8.

Abstract

Photoageing represents the addition of extrinsic chronic ultraviolet radiation-induced damage on intrinsic ageing and accounts for most age-associated changes in skin appearance. In this study, we evaluated the effect of 38% BPF, a highly concentrated extract of the bergamot fruit (Citrus bergamia) on UVB-induced photoageing by examining inflammatory cytokine expression, telomere length/telomerase alterations and cellular viability in human immortalized HaCaT keratinocytes. Our results suggest that 38% BPF protects HaCaT cells against UVB-induced oxidative stress and markers of photoageing in a dose-dependent manner and could be a useful supplement in skin care products. Together with antioxidant properties, BPF, a highly concentrated extract of the bergamot fruit, appears to modulate basic cellular signal transduction pathways leading to anti-proliferative, anti-aging and immune modulating responses.

Publication types

  • Letter

MeSH terms

  • Cell Line, Transformed
  • Citrus / chemistry*
  • Humans
  • Keratinocytes / metabolism*
  • Keratinocytes / pathology
  • Oxidative Stress / drug effects
  • Oxidative Stress / radiation effects
  • Polyphenols / chemistry
  • Polyphenols / pharmacology*
  • Skin Aging* / drug effects
  • Skin Aging* / radiation effects
  • Telomerase / metabolism*
  • Telomere / metabolism*
  • Ultraviolet Rays / adverse effects*

Substances

  • Polyphenols
  • Telomerase