Evidence map›Paper›PMID 27973989›Full record

Trial reportGut microbes2017

Prospective randomized controlled study on the effects of Saccharomyces boulardii CNCM I-745 and amoxicillin-clavulanate or the combination on the gut microbiota of healthy volunteers.

Toufic A Kabbani, Kumar Pallav, Scot E Dowd, Javier Villafuerte-Galvez, Rohini R Vanga, Natalia E Castillo, Joshua Hansen, Melinda Dennis, Daniel A Leffler, Ciarán P Kelly

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Gut microbes, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 3 pooled it
4.0field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

64 citing papers in PubMed, 3 syntheses or guidelines pooled it, 114 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Nutrients · 2025
    Trial
  5. Review
  6. Article
  7. Article
  8. Review
  9. Review
  10. Review
  11. Gut microbes · 2025
    Article
  12. Review
  13. Review
  14. Observational
  15. Review
  16. Review
  17. Antibiotic-perturbed microbiota and the role of probiotics.Nature reviews. Gastroenterology & hepatology · 2025
    Review
  18. Review
  19. Review
  20. Review

4 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 1 institution in 1 country.

Toufic A Kabbania Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Kumar Pallava Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Scot E Dowdc Molecular Research , Shallowater , TX , USA.
Javier Villafuerte-Galveza Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Rohini R Vangaa Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Natalia E Castilloa Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Joshua Hansena Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Melinda Dennisa Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Daniel A Lefflera Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Ciarán P Kellya Division of Gastroenterology, Department of Medicine , Beth Israel Deaconess Medical Center , Boston , MA , USA.
Beth Israel Deaconess Medical Center · US

Funding

Harvard Clinical and Translational Science Center (UL1)UL1TR000170 · NCATS · HARVARD MEDICAL SCHOOL · PI NADLER, LEE MARSHALL · 2012 to 2013
$31.4M
NCATS NIH HHS UL1 TR000170
6 · The paper itself

Abstract

Probiotics are believed to be beneficial in maintaining a healthy gut microbiota whereas antibiotics are known to induce dysbiosis. This study aimed to examine the effects of the probiotic Saccharomyces boulardii CNCM I-745 (SB), the antibiotic Amoxicillin-Clavulanate (AC) and the combination on the microbiota and symptoms of healthy humans. Healthy subjects were randomized to one of 4 study groups: SB for 14 days, AC for 7 days, SB plus AC, Control (no treatment). Participants gave stool samples and completed gastro-intestinal symptom questionnaires. Microbiota changes in stool specimens were analyzed using 16s rRNA gene pyrosequencing (bTEFAP). Only one subject withdrew prematurely due to adverse events. Subjects treated by S boulardii + AC had fewer adverse events and tolerated the study regimen better than those receiving the AC alone. Control subjects had a stable microbiota throughout the study period. Significant microbiota changes were noted in the AC alone group during antibiotic treatment. AC associated changes included reduced prevalence of the genus Roseburia and increases in Escherichia, Parabacteroides, and Enterobacter. Microbiota alterations reverted toward baseline, but were not yet completely restored 2 weeks after antibiotherapy. No significant shifts in bacterial genera were noted in the SB alone group. Adding SB to AC led to less pronounced microbiota shifts including less overgrowth of Escherichia and to a reduction in antibiotic-associated diarrhea scores. Antibiotic treatment is associated with marked microbiota changes with both reductions and increases in different genera. S. boulardii treatment can mitigate some antibiotic-induced microbiota changes (dysbiosis) and can also reduce antibiotic-associated diarrhea.

Indexed as

AdolescentAdultAmoxicillinAnti-Bacterial AgentsBacteriaClavulanic AcidFecesFemaleGastrointestinal MicrobiomeGastrointestinal TractHealthy VolunteersHumansMaleMiddle AgedProbioticsSaccharomyces boulardiiAmoxicillinAnti-Bacterial AgentsClavulanic Acidadultantibioticantibiotic-associated diarrheaClostridium difficile infectionhealthymicrobiotaprobioticSaccharomyces boulardii

Identifiers

PMID27973989
PMCPMC5341914
OpenAlexW2561294428

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.