Cited by 125Gastrointestinal motility and disordersProbiotics and Fermented FoodsGut microbiota and health

Efficacy of Probiotics for Irritable Bowel Syndrome: A Systematic Review and Network Meta-Analysis

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Zhang, Tao, Zhang, Cunzheng, Zhang, Jindong, Sun, Feng, Duan, Liping·2022·Frontiers in Cellular and Infection Microbiology

Abstract

Background: Irritable bowel syndrome (IBS) is a common gastrointestinal condition. Studies regarding the treatment of IBS with probiotics have not yielded consistent results, and the best probiotics has not yet been confirmed. Therefore, we performed a network meta-analysis (NMA) to assess the relative rank order of different probiotics for IBS. Method: We searched for RCTs on the efficacy of probiotics for IBS until August 25, 2021. The primary outcome was the symptom relief rate, as well as global symptoms, abdominal pain, bloating, and straining scores. The NMA was conducted using Stata 15.0. We also used meta-regression to explore whether the treatment length and dose influenced the efficacy. Results: Forty-three RCTs, with 5,531 IBS patients, were included in this analysis. Firstly, we compared the efficacy of different probiotic species. B.coagulans exhibited the highest probability to be the optimal probiotic specie in improving IBS symptom relief rate, as well as global symptom, abdominal pain, bloating, and straining scores. In regard to the secondary outcomes, L.plantarum ranked first in ameliorating the QOL of IBS patients, but without any significant differences compared with other probiotic species in standardized mean differences (SMD) estimates. Moreover, patients received L.acidophilus had lowest incidence of adverse events. The meta-regression revealed that no significant differences were found between participants using different doses of probiotics in all outcomes, while the treatment length, as a confounder, can significantly influence the efficacy of probiotics in ameliorating abdominal pain (Coef = -2.30; p = 0.035) and straining (Coef = -3.15; p = 0.020) in IBS patients. Thus, we performed the subgroup analysis on treatment length subsequently in these two outcomes, which showed that efficacy of B.coagulans using 8 weeks ranked first both in improving the abdominal pain and straining scores. Additionally, B. coagulans still had significant efficacy compared to different types of probiotic combinations in present study. Conclusions: The findings of this NMA suggested that B.coagulans had prominent efficacy in treating IBS patients, and incorporating B.coagulans into a probiotic combination, or genetically engineering it to amplify its biological function may be a future research target to treat IBS patients. With few direct comparisons available between individual therapies today, this NMA may have utility in forming treatment guideline for IBS with probiotics.

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  • Some probiotics may be beneficial in irritable bowel syndrome (IBS).

    “Some probiotics may be bene fi cial in irritable bowel syndrome (IBS), but differences in species and strains used, as well as endpoints reported, have hampered attempts to make speci fi c recommendations as to which should be preferred.”

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Research works printed but not linked: 2

  1. Kruis W.. (2012). A Double-Blind Placebo-Controlled Trial to Study Therapeutic Effects of Probiotic Escherichia Coli Nissle 1917 in Subgroups of Patients With Irritable Bowel Syndrome. Int. J. Colorectal Dis. 27, 467– 474. doi: 10.1007/s00384-011-1363-9 22130826 PMC3307993 · DOI
  2. Wong R. K. Yang C. Song G. H. Wong J. Ho K. Y. (2015). Melatonin Regulation as a Possible Mechanism for Probiotic (VSL#3) in Irritable Bowel Syndrome: A Randomized Double-Blinded Placebo Study. Dig. Dis. Sci. 60, 186– 194. doi: 10.1007/s10620-014-3299-8 25092036 · DOI

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Authors
Zhang, T., Zhang, C., Zhang, J., Sun, F., & Duan, L.
Affiliations
  • Peking University Third Hospital (CN)
  • Peking University (CN)
Corresponding author
Duan, Liping
Venue
Frontiers in Cellular and Infection Microbiology
Published
2022-04-01
Volume
12
Pages
859967-859967
ISSN
2235-2988 (ISSN-L)
OpenAlex
W4220967172
Cited by
125
References
80
Citations by year
2026: 18 · 2025: 29 · 2024: 37 · 2023: 32 · 2022: 8
FWCI
5.45
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Cellular and Infection Microbiology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Key Technologies Research and Development Program (2019YFA0905604)
  • National Natural Science Foundation of China (82170557)
Topics
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
Keywords
irritable bowel syndrome, probiotics, Lactobacillus plantarum, Lactobacillus acidophilus, symptom relief, abdominal pain, bloating, straining, quality of life, treatment duration, probiotic dosage, probiotic combination, adverse events
MeSH terms
Network Meta-Analysis, Network Meta-Analysis as Topic, Humans, Quality of Life, Abdominal Pain, Treatment Outcome, Probiotics, Irritable Bowel Syndrome

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