Diazepam metabolism by rat and human liver in vitro: inhibition by mephenytoin.
Diazepam metabolism by rat and human liver in vitro: inhibition by mephenytoin.
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大鼠和人肝脏体外地西泮代谢:美芬妥英的抑制。
DOI:
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发表时间:
1992
期刊:
影响因子:
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通讯作者:
T. Inaba
中科院分区:
文献类型:
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作者:
T. V. Beischlag;W. Kalow;W. Mahon;T. Inaba
1. Diazepam metabolism and its association with mephenytoin hydroxylase were studied in vitro using human and rat livers. 2. Enzyme kinetic parameters were obtained for the formation of p-hydroxydiazepam (p-hydroxy-DZP), N-desmethyldiazepam (NDZ), and temazepam (TMZ) from diazepam (DZP) in rat liver fractions. The Km values for formation in rat of p-hydroxy-DZP, NDZ and TMZ were 14 +/- 3 (SEM) microM, 44 +/- 4 and 63 +/- 8, respectively; clearance values calculated from Vmax/Km were 5.7, 3.2 and 4.9 ml/g per min, respectively. 3. Mephenytoin (MP) competitively inhibited, in rat liver, the formation of NDZ, but not the formation of p-hydroxy-DZP or TMZ; in human liver neither NDZ nor TMZ formation was inhibited by MP. 4. In seven different human livers the formation of p-hydroxy-DZP represented a minor pathway compared to the formation of NDZ and TMZ.
DOI:
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发表时间:
1986-01
期刊:
The Journal of biological chemistry
影响因子:
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作者:
T. Shimada;K. Misono;F. Guengerich
通讯作者:
T. Shimada;K. Misono;F. Guengerich
DOI:
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发表时间:
1987-03
期刊:
Drug metabolism and disposition: the biological fate of chemicals
影响因子:
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作者:
M. Campbell;D. Grant;T. Inaba;W. Kalow
通讯作者:
M. Campbell;D. Grant;T. Inaba;W. Kalow