共 36 条
THE ROLE OF LIPOPHILICITY IN THE INHIBITION OF POLYMORPHIC CYTOCHROME-P450IID6 OXIDATION BY BETA-BLOCKING-AGENTS INVITRO
被引:26
作者:
FERRARI, S
[1
]
LEEMANN, T
[1
]
DAYER, P
[1
]
机构:
[1] UNIV GENEVA,HOP CANTONAL,DIV CLIN PHARMACOL,24 RUE MICHELI DU CREST,CH-1211 GENEVA 4,SWITZERLAND
关键词:
INVIVO PHENOTYPED CARRIERS;
ADRENOCEPTOR ANTAGONISTS;
LIVER-MICROSOMES;
BUFURALOL 1'-HYDROXYLATION;
GENETIC-POLYMORPHISM;
O-DEMETHYLATION;
ENZYMATIC BASIS;
DRUG OXIDATION;
METABOLISM;
PHARMACOKINETICS;
D O I:
10.1016/0024-3205(91)90341-8
中图分类号:
R-3 [医学研究方法];
R3 [基础医学];
学科分类号:
1001 ;
摘要:
The importance of lipophilicity as a determinant of the affinity of beta-adrenoceptor blocking agents for a specific human hepatic monooxy-genase - cytochrome P450IID6 (responsible for the debrisoquine-type of oxidation polymorphism) - was investigated in vitro by estimating the inhibition constants of a series of compounds in a microsomal system with monitoring of the kinetics of dextromethorphan O-demethylation. Lipophilicity is a key predictor of the affinity of beta-blocking drugs for cytochrome P450IID6 and of their potential to cause specific competitive drug interactions, but more complex structural factors appear to be important as well. A high lipophilicity is also a necessary, but not a sufficient condition for these compounds to be metabolized by cytochrome P450IID6.
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页码:2259 / 2265
页数:7
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