Experimental evidence for the therapeutic potential of tempol in the treatment of acute liver injury.

Abstract:

:Oxidative stress is one of the mechanisms involved in the acute carbon tetrachloride (CCl4)-induced hepatotoxicity. Since 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl, known as tempol, has powerful antioxidant properties, we investigated its potential hepatoprotective effects and the underlying mechanisms that may add further benefits for its clinical usefulness using an acute model of CCl4-induced hepatotoxicity. One hour after CCl4 induction of acute hepatotoxicity, mice were treated with a daily dose of 20 mg/kg/day tempol for 3 days. It was found that treatment of animals with tempol significantly negated the pathological changes in liver function parameters as well as histology induced by CCl4. In addition, tempol significantly ameliorated CCl4-induced lipid peroxidation and GSH depletion, and improved catalase activity. Furthermore, tempol alleviated the inflammation induced by CCl4 as indicated by reducing the liver expression level of nuclear factor-kappa B (NF-κB) and tumor necrosis factor-α (TNF-α). Finally, tempol significantly reduced expression level of the B-cell lymphoma-2 protein (Bcl-2) and active caspase-3 which are known markers of apoptosis. In conclusion, the present study provides important evidences for the promising hepatoprotective effects of tempol that can be explained by amelioration of oxidative stress mainly through replenishment of GSH, restoration of antioxidant enzyme activities, and reduction of lipid peroxides alongside its anti-inflammatory properties.

journal_name

Mol Cell Biochem

authors

Abouzied MM,Eltahir HM,Taye A,Abdelrahman MS

doi

10.1007/s11010-015-2572-2

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

107-15

issue

1-2

eissn

0300-8177

issn

1573-4919

pii

10.1007/s11010-015-2572-2

journal_volume

411

pub_type

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