Determination of CYP2C19 phenotype in black Americans with omeprazole: correlation with genotype

JS Marinac, JD Balian, JW Foxworth… - Clinical …, 1996 - Wiley Online Library
Background Our objective was to study omeprazole as a single‐dose oral probe in the
determination of CYP2C19 phenotype in black subjects and to determine the correlation …

Inhibition of CYP2C19 and CYP3A4 by omeprazole metabolites and their contribution to drug-drug interactions

Y Shirasaka, JE Sager, JD Lutz, C Davis… - Drug Metabolism and …, 2013 - ASPET
The aim of this study was to evaluate the contribution of metabolites to drug-drug
interactions (DDI) using the inhibition of CYP2C19 and CYP3A4 by omeprazole and its …

Pharmacokinetics and bioequivalence evaluation of omeprazole and sodium bicarbonate dry suspensions in healthy Chinese volunteers

R Zhang, P Guo, J Zhou, P Li, J Wan, C Yang… - Scientific Reports, 2023 - nature.com
Omeprazole and sodium bicarbonate dry suspension are effective treatments for acid-
related disorders. This study compared the bioequivalence and safety of the two …

CYP2C19 genotypes and omeprazole metabolism after single and repeated dosing when combined with clarithromycin

Q Zhou, I Yamamoto, T Fukuda, M Ohno… - European journal of …, 1999 - Springer
Objectives: Omeprazole is metabolized mainly by CYP2C19 which has two major mutations
(CYP2C19* 2 in exon5 and CYP2C19* 3 in exon4) associated with the poor metabolizer …

Identification of a single time-point for plasma lansoprazole measurement that adequately reflects area under the concentration-time curve

T Niioka, N Yasui-Furukori, T Uno… - Therapeutic drug …, 2006 - journals.lww.com
The objective of this study was to identify a single time-point for plasma lansoprazole
measurement that adequately reflects area under the plasma lansoprazole concentration …

Nonlinear Kinetics After High–Dose Omeprazole Caused by Saturation of Genetically Variable Cyp2c19

KL Rost, I Roots - Hepatology, 1996 - journals.lww.com
Nonlinear kinetics of omeprazole and its metabolites were investigated after treatment with
repeated high doses. Extensive metabolizers relating to cytochrome P450 2C19 (CYP2C19) …

Evaluation of CYP2C19 activity using microdosed oral omeprazole in humans

A Elbe, KI Foerster, A Blank, P Rose… - European Journal of …, 2022 - Springer
Purpose To investigate the suitability of microdosed oral omeprazole for predicting
CYP2C19 activity in vivo in combination with simultaneous assessment of CYP3A and …

Assessing pharmacokinetic differences in Caucasian and East Asian (Japanese, Chinese and Korean) populations driven by CYP2C19 polymorphism using …

L Zhou, P Sharma, KR Yeo, M Higashimori, H Xu… - European Journal of …, 2019 - Elsevier
Understanding the influence of ethnicity on drug exposure is key to patient safety and could
minimize repetitive clinical studies. This analysis aimed to evaluate the ability of …

CYP2C19 haplotypes in Koreans as a marker of enzyme activity evaluated with omeprazole

SK Jin, TS Kang, SO Eom, JI Kim… - Journal of clinical …, 2009 - Wiley Online Library
Background and objective: CYP2C19 is clinically important in Korea because of the
relatively high incidence of poor metabolizers in the population. To fully understand the …

Different inhibitory effect of fluvoxamine on omeprazole metabolism between CYP2C19 genotypes

N Yasui‐Furukori, T Takahata… - British journal of …, 2004 - Wiley Online Library
Aims Omeprazole is mainly metabolized by the polymorphic cytochrome P450 (CYP) 2C19.
The inhibitory effect of fluvoxamine, an inhibitor of CYP2C19 as well as CYP1A2, on the …