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Effect of Royal Jelly Intake on Antioxidant Activity in the Skin of Mice after UV Irradiation


Bo-young Seo1, Eunju Park1, Kwang Gill Lee2, Sang Mi Han2, You Youn Choi3, Yunhi Cho3 and Yoo Kyoung Park3,4
1Division of Food and Nutrition, Kyungnam University, Masan 306-791, 2Department of Agricultural Biology, National
Academy of Agricultural Science, Suwon 441-100, 3Department of Medical Nutrition, Graduate School of East-West
Medical Science, Kyung Hee University, Yongin 446-791, 4Research Institute of Medical Nutrition, Seoul 130-701, Korea

Royal jelly is a honey bee secretion that is used in the nutrition of the larvae. It has been reported
to contain remarkable amounts of proteins, lipids, vitamins, hormones, enzymes, mineral substances, and
specific vital factors that act as biocatalysts in cell regeneration processes within the human body. This
study was designed to study the effect of royal jelly on ultraviolet (UV) induced skin damage. Three
kinds of Korean and one Chinese royal jelly (GP: Gimpo, PC: Pochoen, CW: Cholwon, CH: China.)
was supplemented to mice after UV-irradiation, SKH hairless female mice were fed 1% royal jelly and
irradiated with UV for six weeks. The amount of retinol was measured in the mice dermis and epidermis.
The effect of royal jelly on epidermis was not significantly different among groups but were significantly
higher than UV£« and UV£­ group. Catalase (CAT), glutathione peroxidase (GSH-Px) and superoxide
dismutase was measured in both dermis and epidermis. CAT and GSH-Px activity was not significantly
different among groups in the dermis, but, SOD level was significantly higher (p£¼0.05) in the PC, CW,
CH group. The degree of endogenous DNA damage (assessed by tail DNA, tail length and tail moment)
was significantly increased after UV irradiation, but, royal jelly decreased the degree of DNA damage
in all groups. H2O2 induced DNA damage was also increased in the UV irradiated mice, but, supplementation
of royal jelly reduced the DNA damage to the level of un-irradiated mice. Putting these together,
these result demonstrate that royal jelly consumption for 6weeks with UV irradiation seems to have a
partial antioxidant capacity. (Cancer Prev Res 15, 217-224, 2010)



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