In this study, we evaluated the antioxidant activity and protective effects against oxidative DNA damage of the ethyl acetate fraction from the callus of Abeliophyllum distichum Nakai (ECA). Callus of A. distichum was induced on MS medium containing NAA (1 ㎎/L) and 2,4-D (1 ㎎/L), and a sufficient amount was obtained for the extraction by subculture. Acteoside was analyzed and quantified (0.39 ㎎/g callus) from ECA using the high-performance liquid chromatographyphotodiode array detector method. ECA showed very high antioxidative activity as revealed by DPPH and ABTS scavenging assays. The IC50 values were 12.4 and 6.8 ㎍/㎖, respectively. ECA showed protective effects against oxidative DNA damage evaluated by using ψX-174 RF I plasmid DNA. It also inhibited DNA damage by suppressing the oxidative stress-induced protein and mRNA levels of γ-H2AX and p53 in NIH/3T3 cells. In conclusion, ECA protects against oxidative DNA damage through its powerful antioxidant activity.
Introduction
Materials and Methods
Results and Discussion
Acknowledgement
References