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  • Title: Induction of liver microsomal epoxide hydrolase, UDP-glucuronyl transferase and cytosolic glutathione transferase in different rodent species by 2-acetylaminofluorene or 3-methylcholanthrene.
    Author: Aström A, Månér S, DePierre JW.
    Journal: Xenobiotica; 1987 Feb; 17(2):155-63. PubMed ID: 3105187.
    Abstract:
    Control activities vary 12-fold for microsomal epoxide hydrolase, two-fold for UDP-glucuronyl transferase and five-fold for cytosolic glutathione (GSH) transferase among the different rodents (rat, hamster, guinea-pig, mouse) examined. For all three enzymes the activities in rat liver are towards the lower values. In these rodents, except for a 100% increase in microsomal epoxide hydrolase in guinea-pig liver, 2-acetylaminofluorene induces the three phase 2 enzymes only in rat. Treatment with 3-methylcholanthrene also produces the largest effects on these three enzyme activities in rat liver; exceptions are its failure to induce microsomal epoxide hydrolase in female rat and the large induction of cytosolic GSH transferase in hamster liver. Quantitatively, hepatic microsomal epoxide hydrolase, UDP-glucuronyl transferase and cytosolic GSH transferase activities, and their inducibility by 2-acetylaminofluorene or 3-methylcholanthrene, in male Sprague-Dawley rats are not representative for other rodent species or even, in all cases, for female rat.
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