H. Pylori Infection
Conditions
Keywords
eradication rates, rabeprazole, esomeprazole
Brief summary
Patients infected with H. pylori are treated with rabeprazole 10 mg bid, AMPC 750 mg bid and CAM 200 mg bid or esomeprazole 20 mg bid, AMPC 750 mg bid and CAM 200 mg bid. Eradication rates are compared. Patients who have ever failed in eradication by CAM-based regimen are treated with rabeprazole 10 mg bid, AMPC 750 mg bid and MNZ 250 mg bid or esomeprazole 20 mg bid, AMPC 750 mg bid and MNZ 250 mg bid.
Detailed description
Patients infected with H. pylori are treated with rabeprazole 10 mg bid, AMPC 750 mg bid and CAM 200 mg bid or esomeprazole 20 mg bid, AMPC 750 mg bid and CAM 200 mg bid. Eradication rates are compared. Patients who have ever failed in eradication by CAM-based regimen are treated with rabeprazole 10 mg bid, AMPC 750 mg bid and MNZ 250 mg bid or esomeprazole 20 mg bid, AMPC 750 mg bid and MNZ 250 mg bid. CYP2C19 genotypes and susceptibility to CAM are genetically measured. Other factors are also analyzed with reference to eradication rates.
Interventions
This group is treated with rabeprazole 10 mg bid, AMPC 750 mg bid and CAM 200 mg bid for 1 week. Success or Failure of eradication of H. pylori is assessed by 13C-UBT 1 month after the treatment.
This group is treated with esomeprazole 20 mg bid , AMPC 750 mg bid and CAM 200 mg bid for 1 week. Success or Failure of eradication of H. pylori is assessed by 13C-UBT 1 month after the treatment.
Sponsors
Study design
Eligibility
Inclusion criteria
* Patients infected with H. pylori who can undergo the eradication therapy
Exclusion criteria
* Patients with severe other disorders, cannot undergo eradication therapy, refuses to participate to the study.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Eradication rates of H. pylori | At 4 weeks after treatment | Success or failure eradication of H. pylori was judged based on the 13C-urea breath test performed 1 month after the treatment. |
| influence of CYP2C19 genotypes on the eradication rates of H. pylori | At 4 weeks after treatment | influence of CYP2C19 genotypes on the eradication rates of H. pylori are analyzed. CYP2C19 genotypes are classified to the three groups, rapid metabolizer (RM), intermiediate metabolizer (IM) and Poor metabolizer (PM). Because esomperazole is metabolized by CYP2C19, the effects of esomeprazole is influenced by genotypes of CYP2C19. The eradication rates in RMs, IMs and PMs are compared. |
| Influences of susceptibility of H. pylori strains to clarithromycin (CAM) on the eradication rates of H. pylori | At 4 weeks after treatment | Influences of susceptibility to clarithromycin on eradication rates of H. pylori are analyzed. |
Countries
Japan