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  • Title: Cure of Helicobacter pylori infection and healing of duodenal ulcer: comparison of pantoprazole-based one-week modified triple therapy versus two-week dual therapy. The International Pantoprazole HP Study Group.
    Author: Adamek RJ, Bethke TD.
    Journal: Am J Gastroenterol; 1998 Oct; 93(10):1919-24. PubMed ID: 9772056.
    Abstract:
    OBJECTIVE: Eradication of Helicobacter pylori (H. pylori) is recommended as the first-line therapeutic concept for reliable long-term prevention of duodenal ulcer (DU) relapse. Current treatment regimens vary in efficacy, complexity, and compliance. To assess the efficacy of pantoprazole in H. pylori eradication in parallel groups of patients using two eradication regimens. METHODS: Patients, (18-85 yr old; intention-to-treat, n=286) with proven DU, positive rapid urease test (biopsy), and 13C-urea breath test (UBT) were included in a prospective, randomized, multicenter study. Modified triple therapy consisted of 40 mg pantoprazole b.i.d., 500 mg clarithromycin t.i.d., and 500 mg metronidazole t.i.d. for 7 days (PCM therapy); dual therapy consisted of 40 mg pantoprazole b.i.d. and 500 mg clarithromycin t.id. for 14 days (PC therapy). In both groups 40 mg pantoprazole o.d. was given until day 28 when healing of DU was evaluated endoscopically; H. pylori status was assessed by UBT on day 56. RESULTS: H. pylori eradication rate was 95% in PCM versus 60% in PC therapy groups (perprotocol population, p < 0.001), and 82% in PCM versus 50% in PC therapy in the intention-to-treat patient population (p < 0.001). The DU healing rate was 98% in the PCM and 95% in the PC therapy groups (per-protocol population). Both regimens were similarly well tolerated. Adverse events in both regimens included taste disturbance, diarrhea, and increased serum concentration of liver enzymes, at an incidence of < 10%. CONCLUSIONS: Compared to 2-wk PC therapy (pantoprazole and clarithromycin), the 1-wk PCM therapy (pantoprazole, clarithromycin, and metronidazole) is a significantly superior and highly promising strategy for eradication of H. pylori.
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