The stool microbiota of insulin resistant women with recent gestational diabetes, a high risk group for type 2 diabetes

Study information

Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09

study design

cross-sectional observational, not case-control

Citation

PMID PubMed identifier for scientific articles.

26279179

DOI Digital object identifier for electronic documents.

10.1038/srep13212

URI

Authors

Fugmann M, Breier M, Rottenkolber M, Banning F, Ferrari U, Sacco V, Grallert H, Parhofer KG, Seissler J, Clavel T, Lechner A

Journal

Scientific reports

Year

2015

The gut microbiota has been linked to metabolic diseases. However, information on the microbiome of young adults at risk for type 2 diabetes (T2D) is lacking. The aim of this cross-sectional analysis was to investigate whether insulin resistant women with previous gestational diabetes (pGDM), a high risk group for T2D, differ in their stool microbiota from women after a normoglycemic pregnancy (controls). Bacterial communities were analyzed by high-throughput 16S rRNA gene sequencing using fecal samples from 42 pGDM and 35 control subjects 3-16 months after delivery. Clinical characterization included a 5-point OGTT, anthropometrics, clinical chemistry markers and a food frequency questionnaire. Women with a Prevotellaceae-dominated intestinal microbiome were overrepresented in the pGDM group (p < 0.0001). Additionally, the relative abundance of the phylum Firmicutes was significantly lower in women pGDM (median 48.5 vs. 56.8%; p = 0.013). Taxa richness (alpha diversity) was similar between the two groups and with correction for multiple testing we observed no significant differences on lower taxonomic levels. These results suggest that distinctive features of the intestinal microbiota are already present in young adults at risk for T2D and that further investigations of a potential pathophysiological role of gut bacteria in early T2D development are warranted.

Experiment 1

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Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09

Curated date: 2021/01/10

Curator: WikiWorks

Revision editor(s): WikiWorks, Victoria

Subjects

Location of subjects: Germany

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: normoglycemic controls

Group 1 name Corresponds to the case (exposed) group for case-control studies: Women with gestational DM

Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: Gestational Diabetes Mellitus was diagnosed by a standardized oral glucose tolerance test (OGTT) after the 23rd week of the preceding pregnecy

Group 0 sample size Number of subjects in the control (unexposed) group: 35

Group 1 sample size Number of subjects in the case (exposed) group: 42

Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any): 14 days

Lab analysis

Sequencing type: 16S

16S variable region One or more hypervariable region(s) of the bacterial 16S gene: 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: 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

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness: unchanged

Chao1 Abundance-based estimator of species richness: unchanged

Simpson Estimator of species richness and species evenness: more weight on species evenness: unchanged

Signature 1

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Curated date: 2021/01/10

Curator: Yaseen Javaid

Revision editor(s): WikiWorks

Source: Text and Figure 2

Description: Comparison of relative sequence abundances at the different bacterial taxonomic ranks between pGDM and controls.

Abundance in Group 1: increased abundance in Women with gestational DM

NCBI	Quality Control	Links
Veillonellaceae
Prevotella
Ruminococcus

Revision editor(s): WikiWorks

Signature 2

Edit History Delete

Mark reviewed

Your review change was submitted

Needs review

Curated date: 2021/01/10

Curator: Yaseen Javaid

Revision editor(s): WikiWorks

Source: Text and Figure 2

Description: Comparison of relative sequence abundances at the different bacterial taxonomic ranks between pGDM and controls.

Abundance in Group 1: decreased abundance in Women with gestational DM

NCBI	Quality Control	Links
Bacillota
Clostridia
Eubacteriales
Rikenellaceae
Blautia
Alistipes

Revision editor(s): WikiWorks