Abstract
We used ultraviolet (UV)-induced fin damage in zebrafish as a system for evaluating the chemopreventive potential of flavonoids. Chemopreventive effects of each compound, including flavone, flavanone, and chalcone, on fin development were evaluated using Kaplan-Meier analysis and Cox proportional hazards regression. Results showed that 1) flavone has the highest capacity to protect zebrafish fins from UV-induced damages among other groups; 2) zebrafish fins in the UV+1 ppm flavone group are 1.02~9.60 times more likely to return to normal fins than ones in the UV-only group, but fins in the UV+20 ppm flavone group are only 0.45~5.66 times more likely to recover; and 3) flavone significantly reduced ROS production in UV-exposed zebrafish embryos, which may attenuate UV-mediated apoptosis. In conclusion, zebrafish can be used as a system for comparing the UV-protection efficacy of flavonoids.
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