Title : [The combined effect of isoniazid and rifampicin on the activities of CYP4501A2 and CYP4503A4 in primary hepatocytes from healthy human adults].

Pub. Date : 2005 Nov

PMID : 16324277






4 Functional Relationships(s)
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1 The activity of CYP3A4 in the three isoniazid and rifampicin combined groups with three kinds of different concentrations was (118.37 +/- 8.90), (77.53 +/- 6.91), (68.73 +/- 4.72) mAU.min respectively, which had significant difference compared with that in the negative control group (P < 0.01), but they were lower than those in rifampicin groups with corresponding concentrations (P < 0.05). Isoniazid cytochrome P450 family 3 subfamily A member 4 Homo sapiens
2 Isoniazid in the range of maximum clinical blood concentration can inhibit the activity of CYP3A4, while rifampicin can induce the activity of CYP3A4; the combined effect of isoniazid and rifampicin being the induction of CYP3A4 activity, but the inducing effect was less than that of rifampicin alone with the same concentration. Isoniazid cytochrome P450 family 3 subfamily A member 4 Homo sapiens
3 Isoniazid in the range of maximum clinical blood concentration can inhibit the activity of CYP3A4, while rifampicin can induce the activity of CYP3A4; the combined effect of isoniazid and rifampicin being the induction of CYP3A4 activity, but the inducing effect was less than that of rifampicin alone with the same concentration. Isoniazid cytochrome P450 family 3 subfamily A member 4 Homo sapiens
4 Isoniazid in the range of maximum clinical blood concentration can inhibit the activity of CYP3A4, while rifampicin can induce the activity of CYP3A4; the combined effect of isoniazid and rifampicin being the induction of CYP3A4 activity, but the inducing effect was less than that of rifampicin alone with the same concentration. Isoniazid cytochrome P450 family 3 subfamily A member 4 Homo sapiens