Modified Sequential Therapy Regimen versus Conventional Triple Therapy forHelicobacter pyloriEradication in Duodenal Ulcer Patients in China: A Multicenter Clinical Comparative Study

Abstract

Objective. Antimicrobial resistance has decreased eradication rates forHelicobacter pyloriinfection worldwide. To observe the effect of eradicatingHelicobacter pylori (H. pylori)and the treatment of duodenal ulcer by 2 kinds of modified sequential therapy through comparing with that of 10-day standard triple therapy.Methods. A total of 210 patients who were confirmed in duodenal ulcer active or heal period by gastroscopy andH. pyloripositive confirmed by rapid urease test, serum anti-H. pyloriantibody (ELASE), or histological examination enrolled in the study. All the patients were randomly divided into three groups: group A (70 cases) and group B (70 cases) were provided 10-day modified sequential therapy; group C (70 cases) was provided 10-day standard triple therapy. Patients of group A received 20 mg of Esomeprazole, 500 mg of Clarithromycin for the first 5 days, followed by 20 mg of Esomeprazole, 500 mg of Clarithromycin, and 1000 mg of Amoxicillin for the remaining 5 days. Group B received 20 mg of Esomeprazole, 1000 mg of Amoxicillin for the first 5 days, followed by 20 mg of Esomeprazole, 500 mg of Clarithromycin, and 1000 mg of Amoxicillin for the remaining 5 days. Group C received 20 mg of Esomeprazole, 500 mg of Clarithromycin, and 1000 mg of Amoxicillin for standard 10-day therapy. All drugs were given twice daily.H. pylorieradication rate was checked four to eight weeks after taking the medicine by using a13C urea breath test. In the first, second, third, seventh, twenty-first, thirty-fifth days respectively, the symptoms of patients such as epigastric gnawing, burning pain, and acidity were evaluated simultaneously.Results. Overall, 210 patients accomplished all therapy schemes, 9 case patients were excluded. The examination result indicated that theH. pylorieradication rate of each group was as follows: group A 92.5% (62/67), group B 86.8% (59/68), and group C 78.8% (52/66). TheH. pylorieradication rate of group A was slightly higher than group B (P<0.05) and both of them were obviously higher than group C (P<0.05). Modified sequential therapy was significantly more effective in patients with clarithromycin-resistant strains (80%/67% versus 31%;P=0.02). Symptoms improvement: all the three groups could improve the symptoms such as epigastric gnawing, burning pain, and acidity since the first day. There was no significant difference in total score descending of symptoms between each group (P>0.05).Conclusions. All the three therapy schemes could alleviate symptoms of duodenal ulcer patients in China efficiently. But as far as eradicatingH. pyloriis concerned, the modified sequential therapy was better than standard triple therapy, especially the therapy scheme used in group A.