Bifidobacterium -Rich Fecal Donor May Be a Positive Predictor for Successful Fecal Microbiota Transplantation in Patients with Irritable Bowel Syndrome

Shinta Mizuno, Tatsuhiro Masaoka, Makoto Naganuma, Taishiro Kishimoto, Momoko Kitazawa, Shunya Kurokawa, Moeko Nakashima, Kozue Takeshita, Wataru Suda, Masaru Mimura, Masahira Hattori, Takanori Kanai*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    95 Citations (Scopus)


    Background/Aims: Dysbiosis is associated with various systemic disorders including irritable bowel syndrome (IBS). Fecal microbiota transplantation (FMT) might restore intestinal microbial balance. The study aimed to determine the safety and efficacy of FMT in IBS patients, as well as also positive predictors for FMT. Methods: This was a single-arm, open-label study. Eligible patients were diagnosed based on Rome III Diagnostic Criteria. Fecal materials were administered to the patient via colonoscopy. The primary end point was a change in the Bristol stool form scale at 4 weeks after FMT. Recovery to types 3-4 was considered a clinical response. The secondary end point was a change in intestinal microbiota and psychological status using the Hamilton Rating Scale. Results: Ten patients were enrolled. Six patients achieved a clinical response. The diversity of patients 4 weeks after FMT increased significantly compared with patients before FMT, and that of responding patients was significantly higher than non-responder patients. The abundance of Bifidobacterium in effective donors was significantly higher than in ineffective donors and patients. Psychological status of all patients was significantly improved after FMT. Conclusions: FMT for patients with IBS is safe, and relatively effective. Bifidobacterium-rich fecal donor may be a positive predictor for successful FMT. Key Summary: (1) Dysbiosis is associated with various gastrointestinal disorders including IBS. (2) FMT has potential to restore intestinal microbial balance. (3) We showed that FMT improved stool form and psychological status of IBS patients. (4) Bifidobacterium-rich donor efficiently induced symbiosis in IBS patients.

    Original languageEnglish
    Pages (from-to)29-38
    Number of pages10
    Issue number1
    Publication statusPublished - 2017 Aug 1


    • Bifidobacterium
    • Dysbiosis
    • Fecal microbiota transplantation
    • Intestinal microbiota
    • Irritable bowel syndrome

    ASJC Scopus subject areas

    • Gastroenterology


    Dive into the research topics of 'Bifidobacterium -Rich Fecal Donor May Be a Positive Predictor for Successful Fecal Microbiota Transplantation in Patients with Irritable Bowel Syndrome'. Together they form a unique fingerprint.

    Cite this