Gardenia jasminoides Extract Attenuates the UVB-Induced Expressions of Cytokines in Keratinocytes and Indirectly Inhibits Matrix Metalloproteinase-1 Expression in Human Dermal Fibroblasts
Effects of plant extracts derived from Gardenia jasminoides, Phellodendron amurense, and Rheum rhabarbarum on the viability of HaCaT keratinocytes. Cells were treated with plant extracts at the indicated concentration for 24 h and cell viabilities were determined using an MTT assay. Cell viabilities are presented as percentages of the vehicle control (means ± SEs; ). # versus the vehicle control.