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[2012] Royal Jelly Increases Collagen Production in Rat Skin After Ovariectomy
상훈
2012/07/12 2867
jmf.2011.pdf ( 387.9 K | 다운 : 208 )
 2012 Jun;15(6):568-75. doi: 10.1089/jmf.2011.1888. Epub 2012 Apr 2.

Royal jelly increases collagen production in rat skin after ovariectomy.

Source

Department of East-West Medical Science, Kyung Hee University, Yongin-si, Korea.

Abstract

Royal jelly (RJ) is a honeybee product that contains proteins, carbohydrates, fats, free amino acids, vitamins, and minerals. RJ has been reported to have antitumor, antibacterial, and wound-healing activities. We previously reported that RJ enhanced the migration of human dermal fibroblasts and altered the levels of cholesterol and sphinganine in an in vitro wound-healing model in addition to regulating skin photoaging following exposure to ultraviolet-B radiation. We established an animal model of skin aging in the context of estrogen deficiency and assessed the antiaging effects of RJ on skin. To establish an in vivo model of skin aging, bilateral ovariectomies were performed in 12-week-old virgin female Sprague-Dawley rats. Induction of osteoporosis was confirmed through two-dimensional images of the trabecular bone in the left femoral necks using microcomputed tomography. The protective effects of RJ ovariectomy-induced skin aging were examined by determining the protein expression of type I procollagen and matrix metalloproteinase (MMP)-1. The collagen content and epidermal thickness of skin tissue were measured by staining techniques. There was a significant difference in weight between sham-operated and ovariectomized groups. Food efficiency ratio did not differ significantly among the groups. The level of procollagen type I protein was increased in the dorsal skin of ovariectomized rats fed with a dietary supplement containing 1% RJ extract, but the level of MMP-1 was not altered. In particular, the amount ofcollagen recovered was close to the normal level. RJ may protect against skin aging by enhancing collagen production in rats with ovariectomy-induced estrogen deficiency.

PMID:
 
22468645
 
[PubMed - indexed for MEDLINE] 
PMCID:
 
PMC3359633
 [Available on 2013/6/1]


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