Archives of Dermatological Research

, Volume 302, Issue 3, pp 183–189 | Cite as

Gingko biloba extract reduces VEGF and CXCL-8/IL-8 levels in keratinocytes with cumulative effect with epigallocatechin-3-gallate

  • Sandra Trompezinski
  • Marlène Bonneville
  • Ingrid Pernet
  • Alain Denis
  • Daniel Schmitt
  • Jacqueline Viac
Original Paper

Abstract

In skin inflammation, vascular endothelial growth factor (VEGF) and CXCL-8/IL-8 play an important role and are produced by activated keratinocytes. Extracts from Ginkgo biloba leaves (GBE), widely used in phytotherapy, have been reported to exert antioxidant and anti-inflammatory properties in the skin. We therefore evaluated the effects of GBE on the release of VEGF and CXCL8/IL-8 by normal human keratinocytes (NHKs) activated by tumor necrosis factor α (TNFα). Moreover, as we previously showed that epigallocatechin-3-gallate (EGCG) reduces VEGF and CXCL8/IL-8 secretion in TNFα-activated NHKs, we also tested its effect in association with GBE. Our results showed that GBE exerted a potent inhibition on VEGF and CXCL8/IL-8 levels in activated cells. In association with EGCG, GBE down-regulated VEGF and CXCL8/IL-8 levels in a cumulative manner in TNFα-stimulated NHKs. These results suggest that GBE, alone or in association with EGCG may contribute to moderate inflammatory processes in skin diseases associated with angiogenesis.

Keywords

Ginkgo biloba Normal human keratinocyte VEGF CXCL8/IL-8 Inflammation EGCG 

Abbreviations

BPE

Bovine pituitary extract

COX

Cyclooxygenase

EGCG

Epigallocatechin-3-gallate

EGF

Epidermal growth factor

ELISA

Enzyme-linked immunosorbent assays

GBE

Ginkgo biloba extract

IL

Interleukin

MTT

3-(4, 5-Dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide

NHK

Normal human keratinocyte

PG

Propylene glycol

TNFα

Tumor necrosis factor α

UV

Ultraviolet

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Sandra Trompezinski
    • 1
    • 2
  • Marlène Bonneville
    • 3
  • Ingrid Pernet
    • 2
  • Alain Denis
    • 3
  • Daniel Schmitt
    • 1
  • Jacqueline Viac
    • 1
  1. 1.Université de Lyon, EA4169, Hôpital E. HerriotLyonFrance
  2. 2.DIPTA, 505, rue Pierre BerthierAix-en-ProvenceFrance
  3. 3.Laboratoire Dermatologique BiodermaLyonFrance

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