Abstract:
AIM OF THE STUDY:Sophora flavescens has been used as an antipyretic and analgesic agent. To assess the possible herb-drug interaction, effects of S. flavescens extracts on hepatic cytochrome P450 (P450, CYP) enzymes were studied. MATERIALS AND METHODS:Effects of the extracts prepared by three different pharmaceutical companies on P450 enzymes were investigated in male and female C57BL/6JNarl mice. RESULTS:In male mice, extract 1 caused a dose- and time-dependent increase of 7-ethoxyresorufin O-deethylation (EROD) activity. Three-day treatment with 3g/kg extracts 1-3 elevated EROD, 7-pentoxyresorufin O-dealkylation (PROD), coumarin hydroxylation, and nifedipine oxidation (NFO) activities. In female mice, extracts 1 and 2 increased EROD and PROD activities without affecting coumarin hydroxylation and NFO activities. However, extract 3, which lacked prenylated flavonoids, caused an induction profile in females the same as in males. Treatment with extract 3 fortified with prenylated flavonoids restored the gender difference. An alkaloid, oxymatrine was present in all extracts and increased EROD and PROD activities. At a human equivalent dose (0.18 g/(kg day)), all extracts increased EROD activity. CONCLUSIONS:These results revealed that Cyp1a had a lower induction response threshold. Oxymatrine contributed at least partly to the P450 induction by S. flavescens. At a higher dose, Cyp2a, Cyp2b, and Cyp3a could be induced and the male-specific induction of Cyp2a and Cyp3a was associated with the presence of prenylated flavonoids.
journal_name
J Ethnopharmacoljournal_title
Journal of ethnopharmacologyauthors
Ueng YF,Chen CC,Tsai CC,Soucek Pdoi
10.1016/j.jep.2009.09.018subject
Has Abstractpub_date
2009-12-10 00:00:00pages
437-46issue
3eissn
0378-8741issn
1872-7573pii
S0378-8741(09)00578-9journal_volume
126pub_type
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journal_title:Journal of ethnopharmacology
pub_type: 杂志文章
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journal_title:Journal of ethnopharmacology
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更新日期:2004-11-01 00:00:00
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journal_title:Journal of ethnopharmacology
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更新日期:1990-05-01 00:00:00
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更新日期:2009-07-15 00:00:00
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journal_title:Journal of ethnopharmacology
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journal_title:Journal of ethnopharmacology
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journal_title:Journal of ethnopharmacology
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journal_title:Journal of ethnopharmacology
pub_type: 杂志文章
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journal_title:Journal of ethnopharmacology
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更新日期:2010-09-15 00:00:00
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journal_title:Journal of ethnopharmacology
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journal_title:Journal of ethnopharmacology
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journal_title:Journal of ethnopharmacology
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journal_title:Journal of ethnopharmacology
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journal_title:Journal of ethnopharmacology
pub_type: 杂志文章
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更新日期:2008-11-20 00:00:00
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journal_title:Journal of ethnopharmacology
pub_type: 杂志文章,评审
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journal_title:Journal of ethnopharmacology
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2014-12-02 00:00:00
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journal_title:Journal of ethnopharmacology
pub_type: 杂志文章
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更新日期:2017-01-20 00:00:00
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journal_title:Journal of ethnopharmacology
pub_type: 杂志文章,评审
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