Annals of internal medicine · 1998
Effect of genetic differences in omeprazole metabolism on cure rates for Helicobacter pylori infection and peptic ulcer.
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Furuta T, Ohashi K, Kamata T, Takashima M, Kosuge K, Kawasaki T, Hanai H, Kubota T, Ishizaki T, Kaneko E
Аннотация
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 of omeprazole may be increased.
OBJECTIVE: To investigate whether CYP2C19 genotype status is associated with cure rates for Helicobacterpylori infection and peptic ulcer achieved by using dual therapy with omeprazole and amoxicillin.
DESIGN: Prospective cohort study.
SETTING: University hospital and health service center in Hamamatsu, Japan.
PATIENTS: 62 patients with peptic ulcer and H. pylori infection.
INTERVENTION: Omeprazole and amoxicillin.
MEASUREMENTS: CYP2C19 genotype status and cure rates for H. pylori infection and peptic ulcer.
RESULTS: Cure rates for H. pylori infection were 28.6% (95% CI, 13.1% to 48.7%), 60% (CI, 38.6% to 83.0%), and 100% (CI, 66.4% to 100%) in the rapid-, intermediate-, and poor-metabolizer groups, respectively. Healing rates for both duodenal and gastric ulcer in the three groups were roughly parallel with cure rates for H. pylori infection.
CONCLUSION: The results of the genotyping test for CYP2C19 seem to predict cure of H. pylori infection and peptic ulcer in patients who receive dual therapy with omeprazole and amoxicillin.
OBJECTIVE: To investigate whether CYP2C19 genotype status is associated with cure rates for Helicobacterpylori infection and peptic ulcer achieved by using dual therapy with omeprazole and amoxicillin.
DESIGN: Prospective cohort study.
SETTING: University hospital and health service center in Hamamatsu, Japan.
PATIENTS: 62 patients with peptic ulcer and H. pylori infection.
INTERVENTION: Omeprazole and amoxicillin.
MEASUREMENTS: CYP2C19 genotype status and cure rates for H. pylori infection and peptic ulcer.
RESULTS: Cure rates for H. pylori infection were 28.6% (95% CI, 13.1% to 48.7%), 60% (CI, 38.6% to 83.0%), and 100% (CI, 66.4% to 100%) in the rapid-, intermediate-, and poor-metabolizer groups, respectively. Healing rates for both duodenal and gastric ulcer in the three groups were roughly parallel with cure rates for H. pylori infection.
CONCLUSION: The results of the genotyping test for CYP2C19 seem to predict cure of H. pylori infection and peptic ulcer in patients who receive dual therapy with omeprazole and amoxicillin.
Предметные рубрики MeSH
AdultAmoxicillinAnti-Ulcer AgentsAryl Hydrocarbon HydroxylasesCytochrome P-450 CYP2C19Cytochrome P-450 Enzyme SystemDrug Therapy, CombinationFemaleGenotypeHelicobacter InfectionsHelicobacter pyloriHumansLiverMaleMiddle AgedMixed Function OxygenasesOmeprazolePenicillinsPeptic UlcerPhenotypeProspective Studies