title: Expression of multiple forms of brain cytochrome P450.
abstract: Multiple forms of cytochrome P450 (P450) in brain tissue have been demonstrated to be expressible in brain tissue using polymerase chain reaction (PCR) techniques, Northern blotting, hydroxylation activity assessment and cloning approaches. The antidepressant drug imipramine is metabolized by brain microsomes to multiple products by pathways inhibitable by quinidine, 7,8-benzoflavone, and ketoconazole, well-known inhibitors of P450-catalyzed reactions. Moreover, PCR studies revealed that a number of P450s are expressible in brain tissue and in glioma C6 cells. Quantitative PCR studies further demonstrated the response of many of these forms to induction in agreement with hydroxylation activity results.
authors.affiliation: Department of Biochemistry and Molecular Biology, University of Texas Medical School at Houston 77225, USA.
authors.forename: H W
authors.initials: HW
authors.lastname: Strobel
authors.forename: H
authors.initials: H
authors.lastname: Kawashima
authors.forename: J
authors.initials: J
authors.lastname: Geng
authors.forename: D
authors.initials: D
authors.lastname: Sequeira
authors.forename: A
authors.initials: A
authors.lastname: Bergh
authors.forename: A V
authors.initials: AV
authors.lastname: Hodgson
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: S
authors.initials: S
authors.lastname: Shen
mesh_terms: D000818:Animals; D001921:Brain / Q000201:enzymology*; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics / Q000378:metabolism*; D018076:DNA, Complementary / Q000302:isolation & purification; D005910:Glioma / Q000201:enzymology; D006801:Humans; D006900:Hydroxylation
chemical_list: D018076:DNA, Complementary; D003577:Cytochrome P-450 Enzyme System