Abstract Title:

Radioprotective efficacy of dieckol against gamma radiation-induced cellular damage in hepatocyte cells.

Abstract Source:

Naunyn Schmiedebergs Arch Pharmacol. 2019 08 ;392(8):1031-1041. Epub 2019 Apr 26. PMID: 31028451

Abstract Author(s):

Velayutham Sadeeshkumar, Arul Duraikannu, Thiyagarajan Aishwarya, Prithi Jayaram, Samuthrapandian Ravichandran, Raghunathan Ganeshamurthy

Article Affiliation:

Velayutham Sadeeshkumar


Naturally occurring antioxidants prevent or delay the harmful effect of free radical formation and radioprotection. The present study aimed to investigate the radioprotective effect of dieckol, a naturally occurring marine bioactive phenolic compound on lipid peroxidation and antioxidant status, DNA damage, and inflammation in gamma-radiation-induced rat primary hepatocytes. Isolated hepatocyte cells exposed to gamma-radiation showed an increased level of lipid peroxidation markers (thiobarbituric acid reactive substances and lipid hydroperoxides) accompanied with the decrease in the activities of enzymatic (SOD, CAT, and GPx) and non-enzymatic (vitamin C, vitamin E, and GSH) antioxidants associated with increased DNA damage coupled with upregulation of inflammatory proteins (NF-κB and COX-2) compared to control. Treatment of dieckol (5, 10, 20 μM) reduces the γ-radiation-induced toxicity and the associated pro-oxidant and antioxidant imbalance as well as decreasing the DNA damage (tail length, tail moment, %DNA in a tail and olive tail moment) and inflammation in hepatocyte cells. These findings indicate that treatment of dieckol offers protection against γ-radiation-induced cellular damage in the liver cells.

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