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Vicenin-2 ameliorates oxidative damage and photoaging via modulation of MAPKs and MMPs signaling in UVB radiation exposed human skin cells.
Exposure of ultraviolet (UV) radiation is the major factor from environment to cause erethema, inflammation, photoaging and skin carcinogenesis. Vicenin-2, a bioflavonoid which are isolated from several medicinal plants. The present study was demonstrated the role of vicenin-2 on UVB linked oxidative stress and photoaging signaling in human dermal fibroblasts (HDF). In this study, UVB-irradiation (100 mJ/cm2 ) significantly elevated the intracellular ROS levels, lipid peroxidation, DNA damage, depletion of antioxidants resulted in apoptotic HDF cells. Interestingly, HDF cells were administrated with vicenin-2, 1 h before UVB-irradiation prevents ROS generation, TBARS, apoptotic changes and DNA damage in HDF. MAPKs and MMP signaling are implicated in oxidative stress and photoaging; these signaling events are considered as photoaging and differentiation. We found that Vicenin-2 prevents over expression of MAPKs (p-ERK1, p-JNK & p-p38), AP-1 and MMPs (MMP-2, 9 & 12) in during the exposure of UVB in HDF cells. These findings conclude that vicenin-2 could be a potential bioactive ingredient to absorb UV photons and protects the dermal cells from the UVB associated oxidative stress and photoaging signaling due to sunscreen properties.
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