Diversified microbiota of meconium is affected by maternal diabetes status
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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
Hu J, Nomura Y, Bashir A, Fernandez-Hernandez H, Itzkowitz S, Pei Z, Stone J, Loudon H, Peter I
Journal
PloS one
Year
2013
OBJECTIVES: This study was aimed to assess the diversity of the meconium microbiome and determine if the bacterial community is affected by maternal diabetes status. METHODS: The first intestinal discharge (meconium) was collected from 23 newborns stratified by maternal diabetes status: 4 mothers had pre-gestational type 2 diabetes mellitus (DM) including one mother with dizygotic twins, 5 developed gestational diabetes mellitus (GDM) and 13 had no diabetes. The meconium microbiome was profiled using multi-barcode 16S rRNA sequencing followed by taxonomic assignment and diversity analysis. RESULTS: All meconium samples were not sterile and contained diversified microbiota. Compared with adult feces, the meconium showed a lower species diversity, higher sample-to-sample variation, and enrichment of Proteobacteria and reduction of Bacteroidetes. Among the meconium samples, the taxonomy analyses suggested that the overall bacterial content significantly differed by maternal diabetes status, with the microbiome of the DM group showing higher alpha-diversity than that of no-diabetes or GDM groups. No global difference was found between babies delivered vaginally versus via Cesarean-section. Regression analysis showed that the most robust predictor for the meconium microbiota composition was the maternal diabetes status that preceded pregnancy. Specifically, Bacteroidetes (phyla) and Parabacteriodes (genus) were enriched in the meconium in the DM group compared to the no-diabetes group. CONCLUSIONS: Our study provides evidence that meconium contains diversified microbiota and is not affected by the mode of delivery. It also suggests that the meconium microbiome of infants born to mothers with DM is enriched for the same bacterial taxa as those reported in the fecal microbiome of adult DM patients.
Experiment 1
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Subjects
- Location of subjects
- United States of America
- 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
- Meconium
- 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
- adult stool
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- Healthy baby meconium
- Group 0 sample size Number of subjects in the control (unexposed) group
- 9
- Group 1 sample size Number of subjects in the case (exposed) group
- 13
- Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any)
- 9 months
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
- PacBio RS
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)?
- Yes
Signature 1
Needs review
Source: Text + Figure 2
Description: Bacterial Composition of the Meconium and Comparison to the healthy Adult and healthy Infant Microbiome
Abundance in Group 1: increased abundance in Healthy baby meconium
| NCBI | Quality Control | Links |
|---|---|---|
| Pseudomonadota | ||
| Comamonadaceae | ||
| Enterobacteriaceae | ||
| Comamonas | ||
| Escherichia | ||
| Klebsiella | ||
| Proteus | ||
| Shigella |
Revision editor(s): WikiWorks
Signature 2
Needs review
Source: Text + Figure 2
Description: Bacterial Composition of the Meconium and Comparison to the healthy Adult and healthy Infant Microbiome
Abundance in Group 1: decreased abundance in Healthy baby meconium
| NCBI | Quality Control | Links |
|---|---|---|
| Bacteroidota | ||
| Bacillota | ||
| Verrucomicrobiota | ||
| Bacteroidaceae | ||
| Lachnospiraceae | ||
| Oscillospiraceae | ||
| Veillonellaceae |
Revision editor(s): WikiWorks
Experiment 2
Empty strings are not accepted.
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Differences from previous experiment shown
Subjects
- Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
- Maternal diabetes
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- Healthy baby meconium
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- Baby meconium with GDM mothers
- Group 0 sample size Number of subjects in the control (unexposed) group
- 13
- Group 1 sample size Number of subjects in the case (exposed) group
- 5
Lab analysis
Statistical Analysis
- MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?
- No
Signature 1
Needs review
Source: Text + Figure 4
Description: Significant difference between neonates from mothers with different diabetes states
Abundance in Group 1: decreased abundance in Baby meconium with GDM mothers
| NCBI | Quality Control | Links |
|---|---|---|
| Betaproteobacteria | ||
| Brucellaceae | ||
| Alcaligenaceae | ||
| Comamonadaceae | ||
| Xanthobacteraceae | ||
| Alcaligenes | ||
| Cupriavidus | ||
| Comamonas | ||
| Delftia | ||
| Stenotrophomonas |
Revision editor(s): WikiWorks
Experiment 3
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Differences from previous experiment shown
Subjects
- Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- Baby meconium with DM mothers
Lab analysis
Statistical Analysis
Signature 1
Reviewed Marked as Reviewed by Fatima on 2021/07/16
Source: Text + Figure 4
Description: Significant difference between neonates from mothers with different diabetes states
Abundance in Group 1: increased abundance in Baby meconium with DM mothers
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