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Natural Product Research
Formerly Natural Product Letters
Volume 26, 2012 - Issue 12
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Short Communications

Antioxidant and hepatoprotective effects of ethanol extract of Vitex glabrata on carbon tetrachloride-induced liver damage in rats

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Pages 1135-1140 | Received 02 Sep 2010, Accepted 03 Feb 2011, Published online: 04 Nov 2011
 

Abstract

This study was aimed at evaluating the antioxidant and hepatoprotective effects of the ethanol extract of Vitex glabrata (EEVG) in a CCl4-induced liver damage model in rats; and to isolate and characterise the bioactive constituent from EEVG. Hepatoprotective activity was evaluated by changes in the levels of the serum enzymes viz. AST, ALT, ALP and total bilirubin, and further by histopathological examinations of liver tissues. Antioxidant activity was measured in terms of superoxide dismutase, GSH, lipid peroxidation (LPO), catalase and peroxidase levels in liver homogenate. The pentamethoxy flavonoid artemetin was isolated and characterised from EEVG. Artemetin and EEVG pre-treatment significantly (p < 0.001) inhibited LPO in CCl4-intoxicated livers and reduced the elevated serum levels of AST, ALT, ALP and bilirubin to normal; it also brought back the normal architecture of liver tissues. Antioxidant activity of EEVG was found to be comparable with silymarin (p < 0.05). In conclusion, EEVG possesses significant hepatoprotective activity, which may be mediated by the antioxidant mechanisms of its components, predominantly artemetin.

Acknowledgement

V.K. Sridevi, Hemendra S. Chouhan and Narendra K. Singh thank UGC, New Delhi, for the award of research Fellowships.

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