title: Effects of pregnancy on the cytochrome P-450 system in mice.
abstract: The effects of pregnancy on the hepatic cytochrome P-450-dependent mixed-function monooxygenase system (P-450) from day 6 to day 18 of gestation were examined in the C57BL/6J mouse. Pregnancy induced an initial increase and then a decrease in total P-450 content, a decrease in microsomal aminopyrine-N-demethylase activity, and had no effect on microsomal ethylmorphine-N-demethylase activity. Pregnancy also induced in the C57BL/6J and the DBA/2J mice a new major isozyme of P-450 (P-450gest) as determined by high performance liquid chromatography and gel electrophoresis.
mesh_terms: D000633:Aminopyrine N-Demethylase / Q000378:metabolism; D000818:Animals; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism*; D005037:Ethylmorphine-N-Demethylase / Q000378:metabolism; D005260:Female; D051379:Mice; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000378:metabolism*
chemical_list: D003577:Cytochrome P-450 Enzyme System; D000633:Aminopyrine N-Demethylase; D005037:Ethylmorphine-N-Demethylase