title: [Induction of cytochrome P-450 1A1 in rat liver by ultrasound].
abstract: Rat liver monooxygenase activities, such as androstenedione (AD)-hydroxylase, pentoxyresorufin (PR)- and ethoxyresorufin (ER)-O-deethylases have been studied under contact application of ultrasound (US). In the livers of US-treated rats the AD-hydroxylase activity did not differ from the control, thus suggesting that CYP2A1, CYP2B1, CYP2C11, CYP3A1 were not induced. The rate of ER-deethylation increased from 100 in control up to 300 pmol/min/mg in US-treated rats. Western blot analysis revealed also the CYP1A1 induction in US-treated rats which was absent in untreated animals. The mRNA level for CYP1A1 in the livers of US-treated rats increased from 0.5 up to 6.0 fmol mRNA/total RNA but did not change for CYP1A2. The results obtained provide evidence for the nonchemical induction of CYP4501A1 which is known to be induced by polycyclic aromatic compounds as well as by some other compounds.
authors.forename: L F
authors.initials: LF
authors.lastname: Guliaeva
authors.forename: A Iu
authors.initials: AIu
authors.lastname: Grishanova
authors.forename: T A
authors.initials: TA
authors.lastname: Zolotareva
authors.forename: V V
authors.initials: VV
authors.lastname: Liakhovich
mesh_terms: D000818:Animals; D001189:Aryl Hydrocarbon Hydroxylases; D001483:Base Sequence; D015153:Blotting, Western; D051544:Cytochrome P-450 CYP3A; D003577:Cytochrome P-450 Enzyme System / Q000096:biosynthesis*; D004790:Enzyme Induction; D007527:Isoenzymes / Q000096:biosynthesis*; D008862:Microsomes, Liver / Q000201:enzymology*; D006899:Mixed Function Oxygenases / Q000378:metabolism; D008969:Molecular Sequence Data; D009838:Oligodeoxyribonucleotides; D051381:Rats; D017208:Rats, Wistar; D014465:Ultrasonics
chemical_list: D007527:Isoenzymes; D009838:Oligodeoxyribonucleotides; D003577:Cytochrome P-450 Enzyme System; D006899:Mixed Function Oxygenases; D001189:Aryl Hydrocarbon Hydroxylases; C465138:Cyp3a23-3a1 protein, rat; D051544:Cytochrome P-450 CYP3A
vernacular_title: Induktsiia tsitokhorma P-450 1A1 v pecheni krys ultrazvukom.