Effects of patient age and choice of antisecretory agent on success of eradication therapy for Helicobacter pylori infection

Toshihiro Nishizawa, Hidekazu Suzuki, Ai Fujimoto, Hiroto Kinoshita, Shuntaro Yoshida, Yoshihiro Isomura, Akira Toyoshima, Takanori Kanai, Naohisa Yahagi, Osamu Toyoshima

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


The effects of patient age on the efficacy of eradication treatment for Helicobacter pylori (H. pylori) remain unclear. The present study aimed to determine whether age affects eradication therapy involving vonoprazan, a novel potassium-competitive acid blocker (PCAB). We reviewed the cases of 3,261 patients who were administered first-line and second-line H. pylori eradication therapy at Toyoshima Endoscopy Clinic. The first-line treatment was clarithromycin and amoxicillin combined with a proton pump inhibitor (PPI) or a PCAB. The second-line treatment was metronidazole and amoxicillin combined with a PPI or PCAB. The patients were divided into a young to middle-aged group (age ≤50 years) and an older group (age >50 years) as well as into PPI and PCAB groups. The PPI-clarithromycin-amoxicillin regimen demonstrated a significantly lower H. pylori eradication rate than the PCAB-clarithromycin-amoxicillin regimen (p<0.001). With the PPI-clarithromycin-amoxicillin regimen, the eradication rate in the young to middle-aged group was significantly lower than that in the older group (p<0.001). Lastly, age had no impact on the eradication rate of PCAB-based therapy or metronidazole-based therapy. In conclusion, with clarithromycin-based triple therapy, PCAB is a better choice of antisecretory agent compared to PPIs, especially in young to middle-aged patients.

Original languageEnglish
Pages (from-to)208-210
Number of pages3
JournalJournal of Clinical Biochemistry and Nutrition
Issue number3
Publication statusPublished - 2017 May


  • Age
  • Eradication
  • H. pylori
  • Proton pump inhibitor
  • Vonoprazan

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics
  • Clinical Biochemistry


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