Report

Probiotics for photoprotection

Volume 1, Issue 5   September/October 2009
Pages 275 - 279
http://dx.doi.org/10.4161/derm.1.5.9849
Authors: Audrey Guéniche, Philippe David, Batien Philippe, Blum Stephanie, Buyukpamukcu Elif and Castiel-Higounenc Isabelle

View affiliations

Preview



Abstract:

Specific strains of probiotic lactic acid bacteria, have been shown to beneficially influence the composition and/or metabolic activity of the endogenous microbiota and some of these strains have been shown to inhibit the growth of a wide range of enteropathogens. The first aim of using probiotics has been to improve the composition of the intestinal microbiota from a potentially harmful composition towards a composition that would be beneficial to the host

Beyond their capacity to influence positively the composition of the intestinal microbiota, several lines of evidence suggest that some probiotic bacteria can modulate the immune system both at the local and systemic levels thereby improving immune defense mechanisms and/or down-regulate immune disorders such as allergies or intestinal inflammation.

Skin reflects the general health status and aging. Different human trials widely suggest that probiotic supplementation might be useful in the management of atopic dermatitis.  Based on these properties it appears that, beyond the gut, probiotics might exert their benefit at the skin level.

In a randomized double blind placebo-controlled clinical trial, we investigated whether the probiotic bacteria Lactobacillus johnsonii NCC 533 (La1) could modulate the cutaneous immune homeostasis altered after solar-simulated UV exposure in humans. After, UV exposure to twice 1.5 MED, we demonstrated that La1 intake facilitated an earlier recovery of EC allostimulatory function. Thus, this clinical data strengthen the assumption that certain probiotics can contribute to modulate skin immune system leading to the preservation of the skin homeostasis. Altogether the data affords the possibility of designing new strategies based on a nutritional approach for the prevention of UV-induced damaging effects.

Advertisements