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http://dx.doi.org/10.5352/JLS.2014.24.10.1078

Inhibitory Effect of Extract from Acanthocoris sordidus on Oxidative Damage  

Park, Young Mi (Department of Biological Science, Andong National University)
Lim, Jae Hwan (Department of Biological Science, Andong National University)
Lee, Jong Eun (Department of Biological Science, Andong National University)
Seo, Eul Won (Department of Biological Science, Andong National University)
Publication Information
Journal of Life Science / v.24, no.10, 2014 , pp. 1078-1084 More about this Journal
Abstract
Here, we showed that Acanthocoris sordidus extract inhibited both cell and DNA damage caused by oxidative stress. In a radical scavenging assay, the scavenging activity of the A. sordidus extract against 1,1-diphenyl-2-picrylhydrazyl (DPPH) and hydroxyl radicals was 48.9% and 37.8%, respectively, that of ascorbic acid, which was used as a positive control. The ferrous iron chelating activity of the A. sordidus extract was 80.0% compared to that when ethylenediaminetetraacetic acid (EDTA) was used a control. To verify the inhibitory effect of the extract on oxidative cell damage induced by reactive oxygen species (ROS), a lipid peroxidation assay was performed. The results showed that peroxidation was completely inhibited in an extract-treated group compared to a radical-treated group. The level of p21 protein expression was 68.1% that of a control sample. The DNA cleavage-inhibiting property of the A. sordidus extract-treated group was 53.3% that of a control group. Moreover, the phosphorylation of the H2AX protein was reduced to 39.0% of that treated with radical agents, indicating that the extract might inhibit the DNA damage that causes radical oxidation. Taken together, our findings suggest that the A. sordidus extract is effective not only in repressing oxidation by free oxygen radicals and hydroxyl radicals but also in decreasing cell and DNA damage caused by oxidative stress.
Keywords
Acanthocoris sordidus; antioxidant activity; hydroxyl radical; oxidative stress;
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