title: Xenobiotic biotransformation in the rainbow trout liver and kidney during starvation.
abstract: Microsomal cytochrome P-450-dependent activities in the kidney of fish starved for 6 weeks were significantly lower than in fed fish whereas these activities in the liver were only depressed after 12 weeks of starvation. Hepatic cytochrome P-450-dependent activities were depressed to varying extents after 12 weeks of starvation when different substrates were used. The content of hepatic cytochrome P-450 was not affected by starvation. Hepatic UDP-glucuronosyl transferase activities were not affected by starvation. Induction of several hepatic cytochrome P-450-dependent activities by treatment of fish with beta-naphthoflavone was not influenced by starvation. In the kidneys of fish starved for 12 weeks induced levels of cytochrome P-450-dependent benzo(a)pyrene hydroxylase activities were significantly lower than in the kidneys of fed induced fish.
authors.forename: T
authors.initials: T
authors.lastname: Andersson
authors.forename: U
authors.initials: U
authors.lastname: Koivusaari
authors.forename: L
authors.initials: L
authors.lastname: Förlin
mesh_terms: D000818:Animals; D001571:Benzoflavones / Q000494:pharmacology; D001711:Biotransformation; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism; D004790:Enzyme Induction / Q000187:drug effects; D005260:Female; D005399:Fishes / Q000378:metabolism*; D014453:Glucuronosyltransferase / Q000378:metabolism; D007668:Kidney / Q000201:enzymology; D008099:Liver / Q000033:anatomy & histology; D008297:Male; D008862:Microsomes, Liver / Q000201:enzymology; D009251:NADPH-Ferrihemoprotein Reductase / Q000378:metabolism; D009929:Organ Size / Q000187:drug effects; D013217:Starvation / Q000378:metabolism*; D019324:beta-Naphthoflavone
chemical_list: D001571:Benzoflavones; D019324:beta-Naphthoflavone; D003577:Cytochrome P-450 Enzyme System; D009251:NADPH-Ferrihemoprotein Reductase; D014453:Glucuronosyltransferase