Hepatoprotective effect of pinoresinol on carbon tetrachloride-induced hepatic damage in mice.

Abstract:

:Forsythiae Fructus is known to have diuretic, anti-bacterial, and anti-inflammatory activities. This study examined the hepatoprotective effects of pinoresinol, a lignan isolated from Forsythiae Fructus, against carbon tetrachloride (CCl(4))-induced liver injury. Mice were treated intraperitoneally with vehicle or pinoresinol (25, 50, 100, and 200 mg/kg) 30 min before and 2 h after CCl4 (20 microl/kg) injection. In the vehicle-treated CCl(4 )group, serum aminotransferase activities were significantly increased 24 h after CCl4 injection, and these increases were attenuated by pinoresinol at all doses. Hepatic glutathione contents were significantly decreased and lipid peroxidation was increased after CCl4 treatment. These changes were attenuated by 50 and 100 mg/kg of pinoresinol. The levels of protein and mRNA expression of inflammatory mediators, including tumor necrosis factor-alpha, inducible nitric oxide synthase, and cyclooxygenase-2, were significantly increased after CCl4 injection; and these increases were attenuated by pinoresinol. Nuclear translocation of nuclear factor-kappaB (NF-kappaB) and phosphorylation of c-Jun, one of the components of activating protein 1 (AP-1), were inhibited by pinoresinol. Our results suggest that pinoresinol ameliorates CCl4)-induced acute liver injury, and this protection is likely due to anti-oxidative activity and down-regulation of inflammatory mediators through inhibition of NF-kappaB and AP-1.

journal_name

J Pharmacol Sci

authors

Kim HY,Kim JK,Choi JH,Jung JY,Oh WY,Kim DC,Lee HS,Kim YS,Kang SS,Lee SH,Lee SM

doi

10.1254/jphs.09234fp

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

105-12

issue

1

eissn

1347-8613

issn

1347-8648

pii

JST.JSTAGE/jphs/09234FP

journal_volume

112

pub_type

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