title: Hydrocarbon-based oils as inducers of cutaneous aryl hydrocarbon hydroxylase.
abstract: Petroleum-based oils applied to the skin of rats induced cutaneous aryl hydrocarbon hydroxylase activity. A heavy oil like Kuwait Crude induced benzo(a)pyrene (BaP) hydroxylase and diphenyloxazole (PPO) hydroxylase activities to levels obtained with Aroclor 1254, while a light oil like Fuel Oil No. 2 was less effective. Intraperitoneal injection of these oils to rats also induced hepatic aryl hydrocarbon hydroxylase activities. Inhibition of these activities by alpha-naphthoflavone, but not by metyrapone, suggests that the cytochrome induced is of the P448 type.
mesh_terms: D000818:Animals; D001189:Aryl Hydrocarbon Hydroxylases / Q000096:biosynthesis*; D004790:Enzyme Induction; D005648:Fuel Oils / Q000633:toxicity*; D008099:Liver / Q000201:enzymology; D008297:Male; D010578:Petroleum / Q000633:toxicity*; D051381:Rats; D012867:Skin / Q000201:enzymology*
chemical_list: D005648:Fuel Oils; D010578:Petroleum; D001189:Aryl Hydrocarbon Hydroxylases