Journal of Gastroenterology

, Volume 39, Issue 9, pp 838–843

Results of triple eradication therapy in Japanese children: a retrospective multicenter study

  • Seiichi Kato
  • Mutsuko Konno
  • Shun-ichi Maisawa
  • Hitoshi Tajiri
  • Norikazu Yoshimura
  • Toshiaki Shimizu
  • Shigeru Toyoda
  • Yoshiko Nakayama
  • Kazuie Iinuma
Article

DOI: 10.1007/s00535-004-1398-6

Cite this article as:
Kato, S., Konno, M., Maisawa, S. et al. J Gastroenterol (2004) 39: 838. doi:10.1007/s00535-004-1398-6

Abstract

Background

Large-scale clinical trials in children are lacking concerning Helicobacter pylori eradication therapies. The purpose of this study was to assess the efficacy of proton pump inhibitor (PPI)-based triple therapies in Japanese children.

Methods

This was a retrospective analysis of the first- and second-line PPI-based triple therapies from pediatric gastrointestinal units between 1996 and 2003. Data collected included doses and duration of regimens, drug compliance, success or failure of eradication, ulcer healing, and symptom response of those with dyspepsia and no ulcers. The results of antibiotic susceptibility tests were also reported in cases where these were performed.

Results

A total of 149 pediatric patients (mean age, 12.6 years) were studied, including 123 patients who received first-line therapy: 115 received a PPI plus amoxicillin and clarithromycin (PAC) and 8 received a PPI plus amoxicillin and metronidazole (PAM). Overall eradication rates of the first-line PAC and PAM therapies were 77.4% and 87.5%, respectively (P = 0.68). All 14 patients with failed PAC therapy received the second-line PAM regimen, resulting in an eradication rate of 100%. Mild side effects were reported only in PAC regimens (13.8%). Primary resistance to amoxicillin, clarithromycin, and metronidazole was detected in 0%, 34.7%, and 12.5% of the strains, respectively. The PAC regimen showed a high eradication rate for clarithromycin-susceptible strains (91.7%), but was relatively ineffective for resistant strains (40.0%) (P < 0.01). Eradication of H. pylori was associated with ulcer healing and symptomatic improvement among those with gastritis only (both; P < 0.001). Among 17 patients with iron-deficiency anemia, post-treatment hemoglobin levels were higher than the pretreatment levels (P < 0.001).

Conclusions

The PAC regimen is effective in children. Clarithromycin resistance is associated with eradication failure. Metronidazole is a good substitute for clarithromycin as the second-line option for children.

Key words

childclarithromycineradication therapyHelicobacter pylorimetronidazole

Copyright information

© Springer-Verlag Tokyo 2004

Authors and Affiliations

  • Seiichi Kato
    • 1
  • Mutsuko Konno
    • 2
  • Shun-ichi Maisawa
    • 3
  • Hitoshi Tajiri
    • 4
  • Norikazu Yoshimura
    • 5
  • Toshiaki Shimizu
    • 6
  • Shigeru Toyoda
    • 7
  • Yoshiko Nakayama
    • 8
  • Kazuie Iinuma
    • 1
  1. 1.Department of PediatricsTohoku University School of MedicineSendaiJapan
  2. 2.Department of PediatricsSapporo Kohsei General HospitalSapporoJapan
  3. 3.Department of PediatricsMorioka Children’s HospitalMoriokaJapan
  4. 4.Department of PediatricsOsaka Prefecture General HospitalOsakaJapan
  5. 5.Department of PediatricsOsaka Medical Center for Maternal and Child HealthSuitaJapan
  6. 6.Department of PediatricsJuntendo University School of MedicineTokyoJapan
  7. 7.Department of PediatricsKanagawa Prefecture Midwives and Nurses Training HospitalYokohamaJapan
  8. 8.Department of PediatricsShowa-inan General HospitalNaganoJapan