title: Influence of single neonatal treatment with allylestrenol or diethylstilbestrol on microsomal enzyme activity of rat liver in adulthood.
abstract: A single neonatal treatment of rats with a steroid (allylestrenol or diethylstilbestrol) did not alter the later activity of the hepatic microsomal (cytochrome P-450) enzyme system, but inhibited the inducer action of another steroid (testosterone) administered at the age of six weeks. This suggests that a hormonal imprinting-like mechanism also operates in the case of enzymes.
mesh_terms: D000500:Allylestrenol / Q000633:toxicity*; D000633:Aminopyrine N-Demethylase / Q000378:metabolism; D000815:Aniline Hydroxylase / Q000378:metabolism; D000818:Animals; D000831:Animals, Newborn; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism; D004054:Diethylstilbestrol / Q000633:toxicity*; D004790:Enzyme Induction / Q000187:drug effects; D004963:Estrenes / Q000633:toxicity*; D005260:Female; D008297:Male; D008862:Microsomes, Liver / Q000187:drug effects* / Q000201:enzymology; D051381:Rats; D011919:Rats, Inbred Strains; D013739:Testosterone / Q000494:pharmacology
chemical_list: D004963:Estrenes; D013739:Testosterone; D004054:Diethylstilbestrol; D003577:Cytochrome P-450 Enzyme System; D000815:Aniline Hydroxylase; D000633:Aminopyrine N-Demethylase; D000500:Allylestrenol