Purpose: To investigate whether topical application of hesperin affords protection to Balb/C mice epidermis from UVB-induced cyclobutane pyrimidine dimers (CPDs).
Methods: A DNA damage model of UVB irradiation-induced mice epidermis was established. The immunohistochemical staining and southwestern dot blotting were used for CPDs detection; western blotting was used for P53 detection.
Results: Topical application of hesperidin on Balb/C mice skin significantly decreased the amount of epidermal CPDs 24 and 48 h after 180 mJ/cm(2) of UVB irradiation as compared to untreated mice. UVB-induced p53 expression was more pronounced in hesperidin-treated mice epidermis compared to that of untreated mice.
Conclusion: Taken together, these results suggest that topical hesperidin application promotes DNA photo-damage repair. Hesperidin is therefore a promising protective substance against UVB radiation.