A New Cytochrome P450 Form Belonging to the CYP2D in Dog Liver Microsomes: Purification, cDNA Cloning, and Enzyme Characterization

1995 ◽  
Vol 319 (2) ◽  
pp. 372-382 ◽  
Author(s):  
K. Sakamoto ◽  
S. Kirita ◽  
T. Baba ◽  
Y. Nakamura ◽  
Y. Yamazoe ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Cdna Cloning ◽  
Liver Microsomes ◽  
Enzyme Characterization ◽  
Dog Liver

Deactivation of anti-cancer drug letrozole to a carbinol metabolite by polymorphic cytochrome P450 2A6 in human liver microsomes

Xenobiotica ◽  
2009 ◽  
Vol 00 (00) ◽  
pp. 090901052053001-8
Author(s):  
K. Murai ◽  
H. Yamazaki ◽  
K. Nakagawa ◽  
R. Kawai ◽  
T. Kamataki
Keyword(s):  
Cytochrome P450 ◽  
Human Liver ◽  
Liver Microsomes ◽  
Human Liver Microsomes ◽  
Cancer Drug ◽  
Anti Cancer ◽  
Cytochrome P450 2A6

Selegiline Metabolism and Cytochrome P450 Enzymes:In vitro Study in Human Liver Microsomes*

2000 ◽  
Vol 86 (5) ◽  
pp. 215-221 ◽  
Author(s):  
Paivi Taavitsainen ◽  
Markku Anttila ◽  
Leena Nyman ◽  
Hari Karnani ◽  
Jarmo S. Salonen ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Human Liver ◽  
Liver Microsomes ◽  
Human Liver Microsomes ◽  
Vitro Study

scholarly journals Roles of cytochrome P450 2A6 in the oxidation of flavone, 4´-hydroxyflavone, and 4´-, 3´-, and 2´-methoxyflavones by human liver microsomes

Xenobiotica ◽  
2021 ◽  
pp. 1-47
Author(s):  
Haruna Nagayoshi ◽  
Norie Murayama ◽  
Shigeo Takenaka ◽  
Vitchan Kim ◽  
Donghak Kim ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Human Liver ◽  
Liver Microsomes ◽  
Human Liver Microsomes ◽  
Cytochrome P450 2A6

Effect of Commonly Used Organic Solvents on the Kinetics of Cytochrome P450 2B6- and 2C8-Dependent Activity in Human Liver Microsomes

2007 ◽  
Vol 35 (11) ◽  
pp. 1990-1995 ◽  
Author(s):  
Ragini Vuppugalla ◽  
Shu-Ying Chang ◽  
Hongjian Zhang ◽  
Punit H. Marathe ◽  
David A. Rodrigues
Keyword(s):  
Cytochrome P450 ◽  
Organic Solvents ◽  
Human Liver ◽  
Liver Microsomes ◽  
Human Liver Microsomes ◽  
Cytochrome P450 2B6 ◽  
Dependent Activity ◽  
Kinetics Of

scholarly journals In vitro study on the effect of cornin on the activity of cytochrome P450 enzymes

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Qun Zhang ◽  
Zengqiang Qu ◽  
Yanqing Zhou ◽  
Jin Zhou ◽  
Junwei Yang ◽  
...  
Keyword(s):  
Cytochrome P450 ◽  
Drug Interaction ◽  
Liver Microsomes ◽  
In Vitro Study ◽  
Inhibitory Effect ◽  
Dependent Manner ◽  
Cytochrome P450 Enzymes ◽  
Drug Drug Interaction ◽  
Dose Dependent

Abstract Background Cornin is a commonly used herb in cardiology for its cardioprotective effect. The effect of herbs on the activity of cytochrome P450 enzymes (CYP450s) can induce adverse drug-drug interaction even treatment failure. Therefore, it is necessary to investigate the effect of cornin on the activity of CYP450s, which can provide more guidance for the clinical application of cornin. Methods Cornin (100 μM) was incubated with eight isoforms of CYP450s, including CYP1A2, 2A6, 3A4, 2C8, 2C9, 2C19, 2D6, and 2E1, in pooled human liver microsomes. The inhibition model and corresponding parameters were also investigated. Results Cornin exerted significant inhibitory effect on the activity of CYP3A4, 2C9, and 2E1 in a dose-dependent manner with the IC50 values of 9.20, 22.91, and 14.28 μM, respectively (p < 0.05). Cornin inhibited the activity of CYP3A4 non-competitively with the Ki value of 4.69 μM, while the inhibition of CYP2C9 and 2E1 by cornin was competitive with the Ki value of 11.31 and 6.54 μM, respectively. Additionally, the inhibition of CYP3A4 by cornin was found to be time-dependent with the KI/Kinact value of 6.40/0.055 min− 1·μM− 1. Conclusions The inhibitory effect of cornin on the activity of CYP3A4, 2C9, and 2E1 indicated the potential drug-drug interaction between cornin and drugs metabolized by these CYP450s, which needs further investigation and validation.

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