Journal
MICROBIOLOGY AND IMMUNOLOGY
Volume 52, Issue 3, Pages 156-161Publisher
BLACKWELL PUBLISHING
DOI: 10.1111/j.1348-0421.2008.00026.x
Keywords
H. pylori eradication therapy; C. butyricum MIYAIRI588; intestinal microbiota; C. difficile
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Antibiotic associated diarrhea due to human intestinal microbiota abnormalities is a side effect of H. pylori eradication therapy. We examined intestinal microbiota changes during H. pylori eradication therapy and the preventive effect of CBM588 as a probiotic agent. Nineteen patients with gastro-duodenal ulcer were randomly divided into three groups: group A (without probiotics), group B (with regular doses of CBM588) and group C (with double doses of CBM588). The incidence of diarrhea and soft stools during H. pylori eradication therapy was 43% in group A and 14% in group B, while none of the patients in group C reported diarrhea or soft stools. Both bacterial counts and detection rates of bifidobacteria and/or obligate anaerobe were decreased by eradication therapy. However, bacterial counts of obligate anaerobes in group C were significantly higher than in group A (P < 0.05). Additionally, during eradication therapy C. difficile toxin A was detected in both group A and group B but not in group C. In conclusion, these results indicate that H. pylori eradication therapy induces antibiotic associated diarrhea due to abnormalities in intestinal microbiota and/or C. difficile. However, these side effects might be prevented by probiotics.
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