Impact of probiotic Saccharomyces boulardii on the gut microbiome composition in HIV-treated patients: A double-blind, randomised, placebo-controlled trial
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Study information
-
Quality control
- Retracted paper
- Contamination issues suspected
- Batch effect issues suspected
- Uncontrolled confounding suspected
- Results are suspect (various reasons)
- Tags applied
study design
Citation
PMID PubMed identifier for scientific articles.
DOI Digital object identifier for electronic documents.
URI
Authors
Villar-García J, Güerri-Fernández R, Moya A, González A, Hernández JJ, Lerma E, Guelar A, Sorli L, Horcajada JP, Artacho A, D Auria G, Knobel H
Journal
PloS one
Year
2017
Dysbalance in gut microbiota has been linked to increased microbial translocation, leading to chronic inflammation in HIV-patients, even under effective HAART. Moreover, microbial translocation is associated with insufficient reconstitution of CD4+T cells, and contributes to the pathogenesis of immunologic non-response. In a double-blind, randomised, placebo-controlled trial, we recently showed that, compared to placebo, 12 weeks treatment with probiotic Saccharomyces boulardii significantly reduced plasma levels of bacterial translocation (Lipopolysaccharide-binding protein or LBP) and systemic inflammation (IL-6) in 44 HIV virologically suppressed patients, half of whom (n = 22) had immunologic non-response to antiretroviral therapy (<270 CD4+Tcells/μL despite long-term suppressed viral load). The aim of the present study was to investigate if this beneficial effect of the probiotic Saccharomyces boulardii is due to modified gut microbiome composition, with a decrease of some species associated with higher systemic levels of microbial translocation and inflammation. In this study, we used 16S rDNA gene amplification and parallel sequencing to analyze the probiotic impact on the composition of the gut microbiome (faecal samples) in these 44 patients randomized to receive oral supplementation with probiotic or placebo for 12 weeks. Compared to the placebo group, in individuals treated with probiotic we observed lower concentrations of some gut species, such as those of the Clostridiaceae family, which were correlated with systemic levels of bacterial translocation and inflammation markers. In a sub-study of these patients, we observed significantly higher parameters of microbial translocation (LBP, soluble CD14) and systemic inflammation in immunologic non-responders than in immunologic responders, which was correlated with a relative abundance of specific gut bacterial groups (Lachnospiraceae genus and Proteobacteria). Thus, in this work, we propose a new therapeutic strategy using the probiotic yeast S. boulardii to modify gut microbiome composition. Identifying pro-inflammatory species in the gut microbiome could also be a useful new marker of poor immune response and a new therapeutic target.
Experiment 1
Reviewed Marked as Reviewed by Folakunmi on 2024-2-21
Subjects
- Location of subjects
- Spain
- Host species Species from which microbiome was sampled. Contact us to have more species added.
- Homo sapiens
- Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology
- Feces Cow dung,Cow pat,Droppings,Dung,Excrement,Excreta,Faeces,Fecal material,Fecal matter,Fewmet,Frass,Guano,Matières fécales@fr,Merde@fr,Ordure,Partie de la merde@fr,Piece of shit,Porción de mierda@es,Portion of dung,Portion of excrement,Portion of faeces,Portion of fecal material,Portion of fecal matter,Portion of feces,Portion of guano,Portion of scat,Portionem cacas,Scat,Spoor,Spraint,Stool,Teil der fäkalien@de,Feces,feces
- Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- baseline
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- immunological non-responders assigned to treatment for 12 weeks
- Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
- HIV-infected immunological non-responders (INR) who received S. boulardii probiotic
- Group 0 sample size Number of subjects in the control (unexposed) group
- 22
- Group 1 sample size Number of subjects in the case (exposed) group
- 22
- Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any)
- 2 months
Lab analysis
- Sequencing type
- 16S
- 16S variable region One or more hypervariable region(s) of the bacterial 16S gene
- Not specified
- Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance
- Illumina
Statistical Analysis
- Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).
- relative abundances
- Statistical test
- Mann-Whitney (Wilcoxon)
- Significance threshold p-value or FDR threshold used for differential abundance testing (if any)
- 0.05
- MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?
- No
Signature 1
Reviewed Marked as Reviewed by Folakunmi on 2024-2-21
Source: Text (Saccharomyces boulardii produces changes in some gut bacterial communities, lines 3-7)
Description: Changes in some gut bacterial communities produced by Saccharomyces boulardii after 12 weeks of intervention
Abundance in Group 1: increased abundance in immunological non-responders assigned to treatment for 12 weeks
| NCBI | Quality Control | Links |
|---|---|---|
| Desulfovibrio | ||
| Megamonas |
Signature 2
Reviewed Marked as Reviewed by Folakunmi on 2024-2-21
Source: Text (Saccharomyces boulardii produces changes in some gut bacterial communities, lines 3-7)
Description: Changes in some gut bacterial communities produced by Saccharomyces boulardii after 12 weeks of intervention
Abundance in Group 1: decreased abundance in immunological non-responders assigned to treatment for 12 weeks
| NCBI | Quality Control | Links |
|---|---|---|
| Catenibacterium | ||
| Clostridiaceae |
Experiment 2
Reviewed Marked as Reviewed by Folakunmi on 2024-2-21
Differences from previous experiment shown
Subjects
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- immunological responders assigned to treatment for 12 weeks
- Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
- HIV-infected immunological responders (IR) who received S. boulardii probiotic
Lab analysis
Statistical Analysis
Signature 1
Needs review
Source: Text (Saccharomyces boulardii produces changes in some gut bacterial communities, lines 3-7)
Description: Changes in some gut bacterial communities produced by Saccharomyces boulardii after 12 weeks of intervention
Abundance in Group 1: increased abundance in immunological responders assigned to treatment for 12 weeks
| NCBI | Quality Control | Links |
|---|---|---|
| Desulfovibrio | ||
| Megamonas |
Signature 2
Needs review
Source: Text (Saccharomyces boulardii produces changes in some gut bacterial communities, lines 3-7)
Description: Changes in some gut bacterial communities produced by Saccharomyces boulardii after 12 weeks of intervention
Abundance in Group 1: decreased abundance in immunological responders assigned to treatment for 12 weeks
| NCBI | Quality Control | Links |
|---|---|---|
| Catenibacterium | ||
| Clostridiaceae |
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