Title : Inhibition of CYP3A4 and CYP3A5 catalyzed metabolism of alprazolam and quinine by ketoconazole as racemate and four different enantiomers.

Pub. Date : 2007 Feb

PMID : 17200836






5 Functional Relationships(s)
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1 Inhibition of CYP3A4 and CYP3A5 catalyzed metabolism of alprazolam and quinine by ketoconazole as racemate and four different enantiomers. Quinine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
2 RESULTS: Quinine 3-hydroxylation was catalyzed to a similar extent by CYP3A4 and CYP3A5. Quinine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
3 Quinine metabolism catalyzed by HLM, CYP3A4 and CYP3A5 was potently inhibited by the trans-enantiomer KTZ 2S,4S, with IC(50) value of 0.16 microM for HLM, 0.04 microM for CYP3A4 and 0.11 microM for CYP3A5. Quinine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
4 Quinine metabolism catalyzed by HLM, CYP3A4 and CYP3A5 was potently inhibited by the trans-enantiomer KTZ 2S,4S, with IC(50) value of 0.16 microM for HLM, 0.04 microM for CYP3A4 and 0.11 microM for CYP3A5. Quinine cytochrome P450 family 3 subfamily A member 4 Homo sapiens
5 CONCLUSIONS: Alprazolam and quinine metabolism is catalyzed by both CYP3A4 and CYP3A5. Quinine cytochrome P450 family 3 subfamily A member 4 Homo sapiens