Title : Induction of CYP3As in HepG2 cells by several drugs. Association between induction of CYP3A4 and expression of glucocorticoid receptor.

Pub. Date : 2003 Apr

PMID : 12673034






6 Functional Relationships(s)
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1 In this study, we demonstrated the inductive effects of phenobarbital, rifampicin, carbamazepine, phenytoin, prednisolone, ciclosporin and clotrimazole on CYP3A4, CYP3A5 and CYP3A7 mRNA expression, and established the relationship between the expression of human glucocorticoid receptor alpha (hGR) mRNA and the induction of CYP3A4 mRNA in cultured HepG2 cells by reverse transcription polymerase chain reaction (RT-PCR). Prednisolone cytochrome P450 family 3 subfamily A member 4 Homo sapiens
2 In this study, we demonstrated the inductive effects of phenobarbital, rifampicin, carbamazepine, phenytoin, prednisolone, ciclosporin and clotrimazole on CYP3A4, CYP3A5 and CYP3A7 mRNA expression, and established the relationship between the expression of human glucocorticoid receptor alpha (hGR) mRNA and the induction of CYP3A4 mRNA in cultured HepG2 cells by reverse transcription polymerase chain reaction (RT-PCR). Prednisolone cytochrome P450 family 3 subfamily A member 4 Homo sapiens
3 Treatment with prednisolone, rifampicin and carbamazepine rapidly induced the level of CYP3A4 mRNA expression by 3- to 6-fold. Prednisolone cytochrome P450 family 3 subfamily A member 4 Homo sapiens
4 Furthermore, we studied the associations between the expression of hGRalpha mRNA and the induced level of CYP3A4 mRNA by prednisolone and ciclosporin. Prednisolone cytochrome P450 family 3 subfamily A member 4 Homo sapiens
5 Treatment with both prednisolone and ciclosporin showed synergistic effects on induction of CYP3A4 mRNA and, following treatment with both drugs, the expression level of CYP3A4 mRNA was 2-fold greater compared with prednisolone alone after the fifth day. Prednisolone cytochrome P450 family 3 subfamily A member 4 Homo sapiens
6 Treatment with both prednisolone and ciclosporin showed synergistic effects on induction of CYP3A4 mRNA and, following treatment with both drugs, the expression level of CYP3A4 mRNA was 2-fold greater compared with prednisolone alone after the fifth day. Prednisolone cytochrome P450 family 3 subfamily A member 4 Homo sapiens