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- W3043868051 abstract "Ultraviolet (UV) B irradiation induces the production of matrix metalloproteinases (MMPs), which are responsible for the degradation or synthesis inhibition of collagenous extracellular matrix in connective tissues, causing skin photoaging. In this study, we examined the inhibitory effect of MMP-1 expression of yam extract in tumor necrosis factor-alpha (TNF-α)-stimulated human dermal fibroblast neonatal (HDFn) cell and preventive effect of UVB-induced damage in hairless mice skin. The synthesis of procollagen and the release of MMP-1 in HDFn cells were measured by EIA kit and MMP-1 assay kit, respectively. UVB radiation was applied to the backs of the mice three times a week for 8 weeks. Mice were randomly divided into three groups, and were topical application with the Dioscorea batatas (DB, 6%) or vehicle. Reduction of TNF-α-induced procollagen synthesis was increased by DB (50 ug/ml), which was higher than positive control group (TGF-β). Also, pre-treatment of HDFn cells with DB inhibited TNF-α?induced release of MMP-1. In vivo study, we found that preventive effect of DB against UV-induced epidermal thickness. DB suppressed the expression of MMP-3 and MMP-13 induced by UVB irradiation. Our results show that DB have preventive effect of UV-induced skin damage in hairless mice." @default.
- W3043868051 created "2020-07-29" @default.
- W3043868051 date "2013-04-30" @default.
- W3043868051 modified "2023-09-26" @default.
- W3043868051 title "Ethanol Extract of Dioscorea batatas Stimulates Procollagen Production and Reduces UVB-induced MMPs Activity in Skin" @default.
- W3043868051 doi "https://doi.org/10.15188/kjopp.2013.04.27.2.183" @default.
- W3043868051 hasPublicationYear "2013" @default.
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