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Abstract Title:

Mangiferin: A xanthone attenuates mercury chloride induced cytotoxicity and genotoxicity in HepG2 cells.

Abstract Source:

J Biochem Mol Toxicol. 2011 Feb 9. Epub 2011 Feb 9. PMID: 21308892

Abstract Author(s):

Mudholkar Kaivalya, B N Nageshwar Rao, B S Satish Rao

Article Affiliation:

Division of Biotechnology, Manipal Life Sciences Centre, Manipal University, Manipal 576 104, India.

Abstract:

Mangiferin (MGN), a dietary C-glucosylxanthone present in Mangifera indica, is known to possess a spectrum of beneficial pharmacological properties. This study demonstrates antigenotoxic potential of MGN against mercuric chloride (HgCl(2) ) induced genotoxicity in HepG2 cell line. Treatment of HepG2 cells with various concentrations of HgCl(2) for 3 h caused a dose-dependent increase in micronuclei frequency and elevation in DNA strand breaks (olive tail moment and tail DNA). Pretreatment with MGN significantly (p<0.01) inhibited HgCl(2) -induced (20µM for 30 h) DNA damage. An optimal antigenotoxic effect of MGN, both in micronuclei and comet assay, was observed at a concentration of 50 µM. Furthermore, HepG2 cells treated with various concentrations of HgCl(2) resulted in a dose-dependent increase in the dichlorofluorescein fluorescence, indicating an increase in the generation of reactive oxygen species (ROS). However, MGN by itself failed to generate ROS at a concentration of 50 µM, whereas it could significantly decrease HgCl(2) -induced ROS. Our study clearly demonstrates that MGN pretreatment reduced the HgCl(2) -induced DNA damage in HepG2 cells, thus demonstrating the genoprotective potential of MGN, which is mediated mainly by the inhibition of oxidative stress. © 2011 Wiley Periodicals, Inc. J Biochem Mol Toxicol 00:1-9 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/jbt.20366.

Study Type : In Vitro Study

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Sayer Ji
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