Journal of Cosmetics, Dermatological Sciences and Applications

Volume 1, Issue 4 (December 2011)

ISSN Print: 2161-4105   ISSN Online: 2161-4512

Google-based Impact Factor: 0.71  Citations  

Carnosine and N-Acetylcarnosine Induce Inhibition of UVB Erythema in Human Skin

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DOI: 10.4236/jcdsa.2011.14027    6,496 Downloads   11,252 Views  Citations

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ABSTRACT

Background: Carnosine is a low molecular weight water soluble biological dipeptide, composed of alanine and histidine, present in a levorotatory form in mammalian tissues. Interesting activities are related to the detoxification from free radical species and byproducts of membrane lipids peroxidation. Objectives: The aim of the present study was to evaluate the photoprotective properties of carnosine and acetylated carnosine when applied to human skin. Materials and methods: Carnosine and N-acetylcarnosine at 0.5% solution in water were applied before and after UVB irradiation in twenty healthy volunteers with phototype 2 or 3. 9 patients were males and 11 females, 25 to 46 years of age. None of the patients had a positive case history for photodermatoses or had received any sun exposure. The minimal erithemal dose (MED) for UVB was determined before the study with a UVB Philips TL12 lamp with a radiance of 4 mW/cm2 and a 290 - 320 nm emission spectrum. Results: Carnosine solution obtained 3.6% reduction of erythema (compared to MED) and N-acetylcarnosine 7.3% reduction. Conclusions: An antioxidant capacity of N-acetylcarnosine and carnosine was shown, probably more significant with vehicles improving skin penetration of the substances through skin barrier. N-acetylcarnosine represents an interesting hydrophilic antioxidant for dermatological preparations.

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M. Nino, B. Iovine and P. Santoianni, "Carnosine and N-Acetylcarnosine Induce Inhibition of UVB Erythema in Human Skin," Journal of Cosmetics, Dermatological Sciences and Applications, Vol. 1 No. 4, 2011, pp. 177-179. doi: 10.4236/jcdsa.2011.14027.

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