The effects of the natural flavonoid hispidulin (6-methoxy-5,7,4'-trih
ydroxyflavone) on bromobenzene-induced hepatotoxicity in mice were inv
estigated. We found a correlation between liver injury and hepatic lip
id peroxidation besides a strong liver glutathione depletion due to th
e toxicant. Hispidulin at doses between 50 and 150 mg/kg i.p. compared
favourably with the reference compound N-acetyl-L-cysteine for inhibi
tion of liver injury and lipid peroxidation. The flavonoid at the high
est dose tested was also able to counteract reduced glutathione deplet
ion induced by bromobenzene in starved mice. These hepatoprotective ef
fects can be related to the antioxidant properties of hispidulin.