title: Effects of chronic treatment with di-(2-ethylhexyl) phthalate on rat liver microsomal activities.
abstract: The effects of chronic di-(2-ethylhexyl)phthalate (DEHP) on liver microsomal activity were studied in rats. Daily doses of 50 and 500 mg/kg for 4 weeks did not affect O-demethylation, aromatic hydroxylation, N-demethylation, C3-hydroxylation, styrene monooxygenase, glutamic-oxalacetic and glutamic-pyruvic transaminases (GOT, GPT). Inhibition of glutathione-S-transferase A and C and induction of epoxide hydrase, glutathione-S-transferase B and nitroreductase activity were instead observed. Protein, cytochrome P-450 and reduced glutathione levels in liver did not appear to be affected by DEHP pretreatment.
mesh_terms: D000818:Animals; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism; D004051:Diethylhexyl Phthalate / Q000494:pharmacology*; D005978:Glutathione / Q000378:metabolism; D005982:Glutathione Transferase / Q000378:metabolism; D008297:Male; D008862:Microsomes, Liver / Q000187:drug effects*; D010795:Phthalic Acids / Q000494:pharmacology*; D051381:Rats
chemical_list: D010795:Phthalic Acids; D003577:Cytochrome P-450 Enzyme System; D004051:Diethylhexyl Phthalate; D005982:Glutathione Transferase; D005978:Glutathione