Lansoprazole Versus Lansoprazole plus Amoxicillin Treatment for Eradication of Helicobacter pylori in Patients with Gastric Ulcer
Abstract
Helicobacter pylori is a major cause of gastritis and an important factor in duodenal ulcer relapse. Eradication of H. pylori has usually been achieved by triple therapy, a combination of bismuth salts and two antibiotics. The disadvantage of these regimens is the large number of tablets and the high incidence of side effects. A new H+,K(+)-ATPase inhibitor, lansoprazole (LPZ), has a strong acid inhibitory effect and an anti-H. pylori effect in vitro. These dual effects have an advantage for the eradication of H. pylori by LPZ alone or by a combination of LPZ and antibiotics. In this study, we investigated an anti-H. pylori effect of LPZ alone and LPZ plus low-dose amoxicillin and the relation between the status of H. pylori colonization and the endoscopic healing stage. LPZ monotherapy suppressed H. pylori but did not eradicate it. LPZ plus low-dose amoxicillin dual therapy eradicated H. pylori in 45.5% of patients with gastric ulcer disease. However, this rate is not satisfactory for eradication therapy. The optimal dosage and duration of treatment need to be specified. A high rate of healing to the endoscopic S2 stage was achieved by eradication of H. pylori and the recurrence of gastric ulcer was suppressed in patients in whom H. pylori was eradicated. The eradication of H. pylori may change the natural course of gastric ulcer disease as it does in duodenal ulcer disease.
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