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Pathophysiology. 2014 Jun;21(2):153-9. doi: 10.1016/j.pathophys.2013.12.001. Epub 2014 Jan 6.

Alcohol-induced oxidative stress in rat liver microsomes: Protective effect of Emblica officinalis.

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  • 1Department of Biochemistry, Sri Krishnadevaraya University, Anantapur 515 055, India.
  • 2Department of Medicine, Hematology/Oncology, University of Illinois, Chicago 60612, USA.
  • 3Department of Genetics, MD Anderson Cancer Center, Houston, TX 77030, USA.
  • 4Department of Biochemistry, Sri Krishnadevaraya University, Anantapur 515 055, India. Electronic address:


The protective effect of Emblica officinalis fruit extract (EFE) against alcohol-induced oxidative damage in liver microsomes was investigated in rats. EFE (250mg/kg b.wt/day) and alcohol (5g/kg b.wt/day, 20%, w/v) were administered orally to animals for 60 days. Alcohol administration significantly increased lipid peroxidation, protein carbonyls with decreased sulfhydryl groups in microsomes, which were significantly restored to normal levels in EFE and alcohol co-administered rats. Alcohol administration also markedly decreased the levels of reduced glutathione (GSH), superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase (CAT) in the liver microsomes, which were prevented with EFE administration. Further, alcohol administration significantly increased the activities of cytochrome P-450, Na(+)/K(+) and Mg(2+) ATPases and also membrane fluidity. But, administration of EFE along with alcohol restored the all above enzyme activities and membrane fluidity to normal level. Thus, EFE showed protective effects against alcohol-induced oxidative damage by possibly reducing the rate of lipid peroxidation and restoring the various membrane bound and antioxidant enzyme activities to normal levels, and also by protecting the membrane integrity in rat liver microsomes. In conclusion, the polyphenolic compounds including flavonoid and tannoid compounds present in EFE might be playing a major role against alcohol-induced oxidative stress in rats.

Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.


Alcohol; CYP-450; Emblica officinalis; Microsomes; Oxidative stress

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