Effect of styrene on hepatic mixed function oxidases, glutathione content and glutathione-s-transferase activity in rats.

Effect of styrene administration (250, 450 and 900 mg/kg orally for 7 consecutive days) on hepatic mixed function oxidase (MFO) enzyme activities, glutathione content and glutathione-S-transferase activity were observed. Activity of aryl hydrocarbon hydroxylase and aniline hydroxylase was significantly enhanced at higher doses of styrene (450 and 900 mg/kg). A significant lowering of glutathione content accompanied with the inhibition of glutathione-S-transferase activity was also noticed at the highest dose of styrene (900 mg/kg).