Research paperInduction of cytochrome P-4502B1-related mouse cytochrome P-450 and regulation of its expression by epidermal growth factor/transforming growth factor α in primary hepatocyte culture
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Cited by (26)
Induction of cytochrome P450 2B1 by pyrethroids in primary rat hepatocyte cultures
2001, Biochemical PharmacologyCitation Excerpt :The induction followed a kinetic profile similar to that of CYP2B1 induction by PB in primary rat hepatocyte cultures, where maximal induction was observed within 3 days of culture [13–15]. As demonstrated in Fig. 6A, CYP2B1 mRNA induction by 50 μM permethrin exceeded CYP2B1 induction by PB at 1.5 mM, the PB concentration shown to elicit maximal CYP2B1 mRNA induction in this culture system [13]. In the present study, the induction of CYP2B1 mRNA by pyrethroids was dose-dependent in a range of 25–100 μM, while CYP2B protein as well as CYP2B-associated enzyme activity were not dose-dependent in the examined concentration range.
Effects of epidermal growth factor on CYP inducibility by xenobiotics, DNA replication, and caspase activations in collagen I gel sandwich cultures of rat hepatocytes
2001, Biochemical PharmacologyCitation Excerpt :Here, we report that EGF, significantly decreases the increase of CYP1A and CYP2B1/2 activities by PB but not the 3-MC and β-NF induction of CYP1A1. However, the decrease of PB-mediated induction of CYP by EGF in the collagen I gel cultures is moderate compared to the complete inhibition of CYP1A1, 2B1/2 and 3A4 by EGF in primary conventional cultures treated with 3-MC, PB and rifampicine, respectively [6,27,28]. These results suggest that part of the inhibitory effect of EGF on CYP expressions in conventional primary cultures may be due to combined effects of EGF and phenotypic changes occurring in this model, especially, the cell cycle progression and the decrease of liver specific functions.
Phosphorylation/dephosphorylation steps are crucial for the induction of CYP2B1 and CYP2B2 gene expression by phenobarbital
1999, Biochemical and Biophysical Research CommunicationsEffect of epidermal growth factor in collagen gel cultures of rat hepatocytes
1999, Toxicology in VitroInteractions of gender, growth hormone, and phenobarbital induction on murine Cyp2b expression
1998, Biochemical Pharmacology
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Present address: Department of Molecular and Cellular Toxicology, Harvard School of Public Health, Boston, MA, U.S.A.