2004 Volume 70 Issue 5 Pages 910-915
The photoprotective activity of the scallop shell water-extract was investigated using cultured rat skin keratinocyte cells. It was found that the scallop shell water-extract protected keratinocyte cells against ultraviolet (UV)-B-induced damage. The scallop shell water-extract had protective effects against hydrogen peroxide (H2O2) in skin keratinocyte cells and also showed 1, 1-diphenyl-2-picrylhydrazyl radical scavenging activity and lipid peroxidation inhibitory activity. In addition, the scallop shell water-extract promoted proliferation of keratinocyte cells. The scallop shell water-extract may protect skin keratinocyte cells against UV-B-induced damage through two factors; antioxidant activity and growth-promoting activity in skin keratinocyte cells. These results suggest utilization of the scallop shell water-extract as materials for protecting skin.
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