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Dermatol Surg. 2004 Feb;30(2 Pt 1):189-95; discussion 196.

The polyhydroxy acid gluconolactone protects against ultraviolet radiation in an in vitro model of cutaneous photoaging.

Author information

1
DakDak Photoaging Technologies, Division of Charles River Laboratories, Inc., Pennsylvania College of Optometry, Elkins Park KGL Inc., Ivy Laboratories University City Science Center, Philadelphia, Pennsylvania, USA.

Abstract

BACKGROUND:

Ultraviolet (UV) radiation damages skin through a variety of mechanisms, including the generation of free radicals. Gluconolactone is a polyhydroxy acid (PHA) that is capable of chelating metals and may also function by scavenging free radicals, thereby protecting skin from some of the damaging effects of UV radiation.

OBJECTIVE:

This study measured the ability of gluconolactone to protect against UV radiation-induced damage.

METHODS:

The ability of gluconolactone to prevent UV radiation-induced elastin promoter activation was determined in vitro using a transgenic model of cutaneous photoaging. Gluconolactone was also evaluated to determine its ability to promote the formation of sunburn cells in human skin after exposure to UV radiation.

RESULTS:

Gluconolactone provided up to 50% protection against UV radiation, as measured in our in vitro system, and did not significantly increase sunburn cells in human skin.

CONCLUSIONS:

These results demonstrate the ability of the PHA gluconolactone to protect against UV radiation-induced elastin promoter activation. In addition, in vivo studies demonstrated that gluconolactone treatment does not result in a significant increase in sunburn cells. Further investigation of this and other PHAs is necessary to identify their potential role in preventing and repairing cutaneous photodamage.

PMID:
14756648
[Indexed for MEDLINE]

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