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Issue 9, 2005
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Detection of reactive oxygen species in the skin of live mice and rats exposed to UVA light: a research review on chemiluminescence and trials for UVA protection

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Abstract

The harmful effects of ultraviolet (UV) exposure on the skin are associated with the generation of reactive oxygen species (ROS) such as superoxide anion radical (˙O2), hydrogen peroxide (H2O2), hydroxyl radical (˙OH), and singlet oxygen (1O2) as well as with lipid peroxides and their radicals (LOOH and LOO˙). To give direct proof that such ROS are generated in UV-exposed skin, we proposed the in vivo detection and imaging method in which both a sensitive and specific chemiluminescence (CL) probe, such as CLA, and an ultralow-light imaging apparatus with a CCD camera were used. With this method we found that ˙O2 is formed intrinsically and that 1O2 and ˙O2 are generated in the UVA-exposed skin of mice. In addition, we indicated that antioxidative ability against ROS in the skin of hairless rats decreased as age increased. Using these findings, we demonstrated the protective abilities of sodium ascorbate, caffeic acid, essential aroma oils, and zinc(II) ion and its complexes, which we administered to mice both topically and orally. We present a review for the current state of our research proposing the sensitive CL method as a useful in vivo tool in photobiological research for the detection of oxidative stress as well as for the evaluation of antioxidative agents to the skin.

Graphical abstract: Detection of reactive oxygen species in the skin of live mice and rats exposed to UVA light: a research review on chemiluminescence and trials for UVA protection

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Article information


Submitted
12 Nov 2004
Accepted
24 Mar 2005
First published
12 Apr 2005

Photochem. Photobiol. Sci., 2005,4, 715-720
Article type
Perspective

Detection of reactive oxygen species in the skin of live mice and rats exposed to UVA light: a research review on chemiluminescence and trials for UVA protection

H. Sakurai, H. Yasui, Y. Yamada, H. Nishimura and M. Shigemoto, Photochem. Photobiol. Sci., 2005, 4, 715
DOI: 10.1039/B417319H

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