Effect of Genetic Differences in Omeprazole Metabolism on Cure Rates for Helicobacter pylori Infection and Peptic Ulcer

T Furuta, K Ohashi, T Kamata, M Takashima… - Annals of internal …, 1998 - acpjournals.org
Background: Omeprazole is metabolized by S-mephenytoin 4′-hydroxylase (CYP2C19) in
the liver. In persons with a poor-metabolizer genotype for CYP2C19, the therapeutic efficacy …

CYP2C19 genotype status and effect of omeprazole on intragastric pH in humans

T Furuta, K Ohashi, K Kosuge, XJ Zhao… - Clinical …, 1999 - Wiley Online Library
Objective Omeprazole is metabolized by genetically determined S‐mephenytoin 4′‐hydroxylase
(CYP2C19) in the liver. This study aimed to determine whether the effect of …

Effect of genotypic differences in CYP2C19 on cure rates for Helicobacter pylori infection by triple therapy with a proton pump inhibitor, amoxicillin, and clarithromycin

…, F Xiao, H Hanai, H Sugimura, K Ohashi… - Clinical …, 2001 - Wiley Online Library
Background Proton pump inhibitors such as omeprazole and lansoprazole are mainly
metabolized by CYP2C19 in the liver. The therapeutic effects of proton pump inhibitors are …

Calcium signalling in endothelial cells

QK Tran, K Ohashi, H Watanabe - Cardiovascular research, 2000 - academic.oup.com
Vascular endothelial cells are ubiquitous for their presence in each and every vessel and
unique for their multifunctional nature. A large number of endothelial functions depend to …

The effects of the SLCO2B1 c. 1457C> T polymorphism and apple juice on the pharmacokinetics of fexofenadine and midazolam in humans

…, I Tamai, T Tateishi, K Ohashi - Pharmacogenetics …, 2011 - journals.lww.com
Objective The objective was to determine the effects of the SLCO2B1 c. 1457C> T polymorphism
and apple juice on the pharmacokinetics of fexofenadine and midazolam in humans. …

Effect of cytochrome P4502C19 genotypic differences on cure rates for gastroesophageal reflux disease by lansoprazole

…, S Takayanagi, M Yamada, K Ohashi… - Clinical …, 2002 - Wiley Online Library
Background and Objectives The acid‐inhibitory effect of lansoprazole depends on differences
in cytochrome P450 (CYP) 2C19 genotypes. We assessed whether therapeutic effects of …

Effects of Ginkgo biloba extract on pharmacokinetics and pharmacodynamics of tolbutamide and midazolam in healthy volunteers

…, H Watanabe, K Umegaki, K Ohashi… - The Journal of …, 2006 - Wiley Online Library
This study was undertaken to clarify the influence of repeated oral administration of Ginkgo
biloba extract (GBE) on CYP2C9 and CYP3A4. CYP2C9 probe (tolbutamide, 125 mg) and …

Pharmacogenomics of proton pump inhibitors

T Furuta, N Shirai, M Sugimoto, K Ohashi… - …, 2004 - Future Medicine
Proton pump inhibitors (PPIs), such as omeprazole, lansoprazole, rabeprazole, esomeprazole,
and pantoprazole, are metabolized by cytochrome P450 isoenzyme 2C19 (CYP2C19) in …

Different dosage regimens of rabeprazole for nocturnal gastric acid inhibition in relation to cytochrome P450 2C19 genotype status

…, A Hishida, M Sakurai, K Ohashi… - Clinical …, 2004 - Wiley Online Library
Objective For the treatment of gastroesophageal reflux disease, intragastric pH should be
lower than 4.0 for no more than 4 hours a day (<16.7%). We aimed to develop optimal dosage …

Interaction between amlodipine and simvastatin in patients with hypercholesterolemia and hypertension

…, K Kosuge, S Uchida, H Hayashi, K Ohashi - Hypertension …, 2005 - nature.com
3-Hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors are often prescribed
in association with antihypertensive agents, including calcium antagonists. Simvastatin is …