title: Sexual dimorphic expression of mouse hepatic CYP2B: alterations during development or after hypophysectomy.
abstract: The constitutive expression of CYP2B mRNA in the livers of mice in the prepubertal stage was sex-independent, with CYP2B9 as the principal isoform. During the maturation stage, CYP2B10 was expressed in both sexes, whereas CYP2B9 was diminished markedly in the males, resulting in a sexually dimorphic expression in adult mice. Hypophysectomy eliminated the sexual dimorphism in the mouse CYP2B subfamily by markedly increasing the expression of both CYP2B9 and CYP2B10 in males to levels similar to those in females.
authors.affiliation: Department of Toxicology, Faculty of Pharmaceutical Sciences, Toyama Medical & Pharmaceutical University, 2630 Sugitani, Toyama, Japan. kjarukam@hotmail.com
authors.forename: Kanokwan
authors.initials: K
authors.lastname: Jarukamjorn
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Sakuma
authors.forename: Nobuo
authors.initials: N
authors.lastname: Nemoto
mesh_terms: D000818:Animals; D001189:Aryl Hydrocarbon Hydroxylases; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics / Q000378:metabolism*; D000072467:Cytochrome P450 Family 2; D005260:Female; D018507:Gene Expression Regulation, Developmental; D007016:Hypophysectomy; D008297:Male; D051379:Mice; D012333:RNA, Messenger / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012737:Sex Factors; D013250:Steroid Hydroxylases
chemical_list: D012333:RNA, Messenger; D003577:Cytochrome P-450 Enzyme System; D013250:Steroid Hydroxylases; D001189:Aryl Hydrocarbon Hydroxylases; C101679:Cyp2b10 protein, mouse; C121503:Cyp2b9 protein, mouse; D000072467:Cytochrome P450 Family 2