Inhibition of peptic ulcer relapse by ranitidine and ecabet independently of eradication of Helicobacter pylori: a prospective, controlled study versus ranitidine.
OBJECTIVE
The recent increase in resistant strains of Helicobacter pylori has become a serious problem. Ecabet is a novel anti-ulcer agent that acts directly on the gastric mucosa, has bactericidal activity, and inhibits adhesion of Helicobacter pylori to the gastric mucosa. These actions result from inhibition of urease and ATPase in Helicobacter pylori, a mechanism distinct from that of antibiotics.


METHODS
Sixty-three patients positive for Helicobacter pylori who had been cured of gastric ulcers and duodenal ulcers were randomly assigned to receive maintenance therapy with ranitidine alone or a combination of ranitidine and ecabet. Ulcer relapse was studied in these patients.


RESULTS
The cumulative relapse rates in the ranitidine group and the ecabet plus ranitidine group were respectively, 29.6% and 4.4% after 1 year of treatment and 66.1% and 13.0%, after 2 years. These differences were significant (p = 0.006). Multivariate analysis of factors potentially related to relapse showed that outcome was significantly related only to treatment (p = 0.020) and not to other characteristics, such as age, diagnosis, or sex.


CONCLUSIONS
We conclude that maintenance therapy with a combination of ranitidine and ecabet prevents ulcer relapse in Helicobacter pylori-positive patients. Controlled studies comparing ulcer relapse rates between eradication treatment and maintenance therapy with ranitidine and ecabet are awaited.
Department of Gastroenterology, School of Medicine, Kitasato University, 2-1-1 Asamizodai, Sagamihara, Kanagawa, 228-8520, Japan. koizumi@med.kitasato-u.ac.jp
Wasaburo
W
Koizumi
Satoshi
S
Tanabe
Hiroshi
H
Imaizumi
Mitsuhiro
M
Kida
Masahito
M
Ohida
Yoko
Y
Koshida
Hiroyuki
H
Mitomi
Yoshio
Y
Hosaka
Shizuka
S
Nagaba
Tohru
T
Sasaki
Katsuhiko
K
Higuchi
Katsunori
K
Saigenji
D045784:Abietanes; D000897:Anti-Ulcer Agents / Q000627:therapeutic use*; D004224:Diterpenes / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D005260:Female; D016481:Helicobacter Infections / Q000188:drug therapy; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000188:drug therapy* / Q000382:microbiology; D011446:Prospective Studies; D011899:Ranitidine / Q000627:therapeutic use*; D055502:Secondary Prevention
D045784:Abietanes; D000897:Anti-Ulcer Agents; D004224:Diterpenes; C061681:ecabet; D011899:Ranitidine