scholarly journals Inhibitory Potential of Herbal Medicines on Human Cytochrome P450-Mediated Oxidation: Properties of Umbelliferous or Citrus Crude Drugs and Their Relative Prescriptions

2001 ◽  
Vol 85 (4) ◽  
pp. 399-408 ◽  
Author(s):  
Lian-Qing Guo ◽  
Masahiko Taniguchi ◽  
Qiao-Yun Chen ◽  
Kimiye Baba ◽  
Yasushi Yamazoe
Keyword(s):  
Cytochrome P450 ◽  
Herbal Medicines ◽  
Human Cytochrome ◽  
Oxidation Properties ◽  
Crude Drugs ◽  
Inhibitory Potential ◽  
Mediated Oxidation

The inhibitory potential of Broussochalcone A for the human cytochrome P450 2J2 isoform and its anti-cancer effects via FOXO3 activation

Phytomedicine ◽  
2018 ◽  
Vol 42 ◽  
pp. 199-206 ◽  
Author(s):  
See-Hyoung Park ◽  
Jongsung Lee ◽  
Jong Cheol Shon ◽  
Nguyen Minh Phuc ◽  
Jun Goo Jee ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Human Cytochrome ◽  
Anti Cancer ◽  
Inhibitory Potential

scholarly journals Inhibition of Human Cytochrome P450 Enzymes by Allergen RemovedRhus vernicifluaStoke Standardized Extract and Constituents

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Hyunsik Jung ◽  
Sanghun Lee
Keyword(s):  
Cytochrome P450 ◽  
Drug Efficacy ◽  
Cytochrome P450 Enzymes ◽  
Inhibitory Effects ◽  
Serious Adverse Events ◽  
Rhus Verniciflua ◽  
Human Cytochrome ◽  
Cyp Isoforms ◽  
Inhibitory Potential ◽  
Potential Interactions

Objective. Potential interactions between herbal extracts and the cytochrome P450 (CYP) system lead to serious adverse events or decreased drug efficacy.Rhus vernicifluastoke (RVS) and its constituents have been reported to have various pharmacological properties. We evaluated the inhibitory potential of RVS and its constituents on the major CYP isoforms.Methods. The effects of allergen removed RVS (aRVS) standardized extract and major components, fustin and fisetin isolated from aRVS, were evaluated on CYP1A2, CYP2C9, CYP2C19, CYP2D6, and CYP3A4 isoenzyme activity by a luminescent CYP recombinant human enzyme assay.Results. The aRVS extract showed relative potent inhibitory effects on the CYP2C9 (IC50, <0.001 μg/mL), CYP2C19 (IC50, 9.68 μg/mL), and CYP1A2 (IC50, 10.0 μg/mL). However, it showed weak inhibition on CYP3A4 and CYP2D6. Fustin showed moderate inhibitory effects on the CYP2C19 (IC50, 64.3 μg/mL) and weak inhibition of the other CYP isoforms similar to aRVS. Fisetin showed potent inhibitory effects on CYP2C9, CYP2C19, and CYP1A2. Fisetin showed moderate inhibition of CYP2D6 and weak inhibition of CYP3A4.Conclusions. These results indicate that aRVS, a clinically available herbal medicine, could contribute to herb-drug interactions when orally coadministered with drugs metabolized by CYP2C9, CYP2C19, and CYP1A2.

Comparison of mechanism-based inhibition of human cytochrome P450 2C19 by ticlopidine, clopidogrel, and prasugrel

Xenobiotica ◽  
2009 ◽  
Vol 00 (00) ◽  
pp. 090901052457079-8
Author(s):  
Y. Nishiya ◽  
K. Hagihara ◽  
A. Kurihara ◽  
N. Okudaira ◽  
N.A. Farid ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Human Cytochrome ◽  
Cytochrome P450 2C19
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