Mucosa-associated gut microbiome in Japanese patients with functional constipation
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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
Sugitani Y, Inoue R, Inatomi O, Nishida A, Morishima S, Imai T, Kawahara M, Naito Y, Andoh A
Journal
Journal of clinical biochemistry and nutrition
Year
2021
Keywords:
butyrate, constipation, microbiota
The number of patients with chronic constipation is increasing in Japan. We investigated the gut mucosa-associated microbiome in Japanese patients with functional constipation. Diagnosis was made according to the Rome IV criteria. Mucosal samples were obtained by gentle brushing of mucosa surfaces. The gut microbiome was analyzed using 16S rRNA gene sequencing. There were no significant differences in bacteria α-diversity such as richness and evenness. The PCoA indicated significant structural differences between the constipation group and healthy controls (p = 0.017 for unweighted and p = 0.027 for weighted). The abundance of the phylum Bacteroidetes was significantly higher in the constipation group. The abundance of the genera Streptococcus, Fusobacterium, Comamonas, and Alistipes was significantly higher in the constipation group. The abundance of the genera Acinetobacter, Oscillospilla, Mucispirillum, Propinibacterium, and Anaerotruncus was significantly lower in the constipation group. In the constipation group, the proportion of genes responsible for sulfur metabolism, selenocompound metabolism, sulfur relay system was significantly higher and the proportion of d-arginine and d-ornithine metabolism and flavonoid biosynthesis was significantly lower. In conclusion, we identified differences of the mucosa-associated microbiome between Japanese patients with functional constipation and healthy controls. The mucosa-associated microbiome of functional constipation was characterized by higher levels of Bacteroidetes (Alistipes).
Experiment 1
Reviewed Marked as Reviewed by Svetlana up on 2025-3-19
Subjects
- Location of subjects
- Japan
- 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
- Mucus Mucus,mucus
- Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
- Chronic constipation Chronic constipation,Infrequent bowel movements,chronic constipation
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- Healthy controls
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- Patients with Functional constipation (FC)
- Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
- Male patients diagnosed with functional constipation according to the Rome IV criteria with average age of 71.4 years (37–84)
- Group 0 sample size Number of subjects in the control (unexposed) group
- 14
- Group 1 sample size Number of subjects in the case (exposed) group
- 15
Lab analysis
- Sequencing type
- 16S
- 16S variable region One or more hypervariable region(s) of the bacterial 16S gene
- V3-V4
- 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
- Kruskall-Wallis
- 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)?
- Yes
- Matched on Factors on which subjects have been matched on in a case-control study
- age
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- unchanged
- Chao1 Abundance-based estimator of species richness
- unchanged
- Richness Number of species
- unchanged
Signature 1
Reviewed Marked as Reviewed by Svetlana up on 2025-3-19
Source: Figure 2
Description: Comparative analyses of the taxonomic composition of the microbial community at the phylum level
Abundance in Group 1: increased abundance in Patients with Functional constipation (FC)
NCBI | Quality Control | Links |
---|---|---|
Bacteroidota |
Revision editor(s): Tosin
Experiment 2
Reviewed Marked as Reviewed by Svetlana up on 2025-3-19
Differences from previous experiment shown
Subjects
Lab analysis
Statistical Analysis
- Statistical test
- LEfSe
- MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?
- No
- LDA Score above Threshold for the linear discriminant analysis (LDA) score for studies using the popular LEfSe tool
- 2
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- unchanged
- Chao1 Abundance-based estimator of species richness
- unchanged
- Richness Number of species
- unchanged
Signature 1
Reviewed Marked as Reviewed by Svetlana up on 2025-3-19
Source: Figure 3
Description: Differential abundant taxa between the constipation group and healthy controls
Abundance in Group 1: increased abundance in Patients with Functional constipation (FC)
NCBI | Quality Control | Links |
---|---|---|
Alistipes | ||
Bacteroidales | ||
Bacteroidia | ||
Bacteroidota | ||
Betaproteobacteria | ||
Comamonas | ||
Fusobacterium | ||
Streptococcus | ||
TM73TM73 | ||
Candidatus Saccharibacteria |
Revision editor(s): Tosin
Signature 2
Reviewed Marked as Reviewed by Svetlana up on 2025-3-19
Source: Figure 3
Description: Differential abundant taxa between the constipation group and Healthy controls
Abundance in Group 1: decreased abundance in Patients with Functional constipation (FC)
Revision editor(s): Tosin
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