Research Article

Antiphotoaging Potential of Extracts of Yin-Tonic Herbal Medicine in Skin Cell and Human Skin Equivalent

Figure 1

Effect on procollagen and MMP-1 production of eight yin-tonic herbal medicines on UVB-irradiated CCD-986sk fibroblast. (a) Type I procollagen and (b) MMP-1 production were measured by ELISA. CCD-986sk fibroblast was pretreated with samples for 24 h and then irradiated with UVB at a rate of 20 mJ/cm2. The cell supernatants were obtained for assay. versus the control group; and versus UVB-irradiated group or nonirradiated group.
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