The Alteration in Composition and Function of Gut Microbiome in Patients with Type 2 Diabetes

Study information

Reviewed Marked as Reviewed by Peace Sandy on 2024-1-17

study design

cross-sectional observational, not case-control

Citation

PMID PubMed identifier for scientific articles.

33224990

DOI Digital object identifier for electronic documents.

10.1155/2020/8842651

URI

https://pubmed.ncbi.nlm.nih.gov/33224990/

Authors

Zhao X, Zhang Y, Guo R, Yu W, Zhang F, Wu F, Shang J

Journal

Journal of diabetes research

Year

2020

Background: Diabetes mellitus (DM) has become one of the most common chronic metabolic diseases worldwide. Due to the increasing prevalence and various complications, diabetes brings about a huge financial burden to DM patients. Nowadays, more and more studies reveal the relationship between diseases and gut microbial community. We aimed to explore the alteration in composition and function of the gut microbiome in T2DM patients. Methods: A total of 137 patients with diabetes and 179 age- and gender-matched healthy controls selected from the healthy people sample center in the First Affiliated Hospital of Zhengzhou University were divided into the DM group and the Con group, respectively. We collected their venous blood for laboratory tests and stool samples for 16S rRNA sequencing. The comparison between the two groups including both composition and function of the gut microbiome is presented. Results: We found that the α-diversity of bacterial taxa in the DM group had an evident decrease compared to that in the Con group. At the phylum level, the DM group had an obvious decrease of Bacteroidetes and a marked increase of Proteobacteria, Actinobacteria, and Verrucomicrobia. At the genus level, Bacteroides and Prevotella decreased the most while Escherichia-Shigella, Lachnospiraceae_incertae_sedis, Subdoligranulum, Enterococcus, and Klebsiella had different degrees of expansion in the DM group. The ROC based on 246 optimum OTUs had very high test efficiency with an AUC of 92.25% in the training set and 90.48% in the test set. As for prediction of metabolic function, the gut microbiome of DM patients was predicted to be more active in environmental information processing and human diseases but less in metabolism. Conclusion: We observed alteration of composition and function of the gut microbiome in the DM group. These changes may provide a new treatment strategy for DM patients and new research targets.

Experiment 1

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Reviewed Marked as Reviewed by Peace Sandy on 2024-1-17

Curated date: 2021/06/17

Curator: Madhubani Dey

Revision editor(s): Madhubani Dey, WikiWorks, Peace Sandy

Subjects

Location of subjects: China

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: Diabetes mellitus Diabetes,diabetes,diabetes mellitus,diabetes mellitus (disease),Diabetes mellitus (disorder),Diabetes mellitus, NOS,Diabetes NOS,DM,DM - Diabetes mellitus,Diabetes mellitus

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: Individuals diagnosed with Type 2 Diabetes Mellitus

Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: Patients with Type 2 Diabetes who were admitted to the First Affiliated Hospital of Zhengzhou University from October 2018 to October 2019; The diagnostic criteria of diabetes mellitus were as follows: (1) twice fasting plasma glucose ðFPGÞ ≥ 7:0 mmol/L, (2) twice oral glucose tolerance test (OGTT ≥ 11:1 mmol/L), and (3) diabetic symptoms (polyuria, thirst, drinking more water, and unexplained weight loss) accompanied with twice random blood glucose ≥ 11:1 mmol/L.

Group 0 sample size Number of subjects in the control (unexposed) group: 179

Group 1 sample size Number of subjects in the case (exposed) group: 137

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

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: LEfSe; Mann-Whitney (Wilcoxon)

Significance threshold p-value or FDR threshold used for differential abundance testing (if any): 0.05

LDA Score above Threshold for the linear discriminant analysis (LDA) score for studies using the popular LEfSe tool: 2

Matched on Factors on which subjects have been matched on in a case-control study: age, sex

Alpha Diversity

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

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

Signature 1

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Reviewed Marked as Reviewed by Peace Sandy on 2024-1-17

Curated date: 2021/06/27

Curator: Madhubani Dey

Revision editor(s): Madhubani Dey, Aiyshaaaa, Peace Sandy

Source: Figure 2

Description: Figure 2: Composition of the gut microbiome in the DM or Con group. (a, b) Distribution of differential flora at the phylum and genus levels between the DM and Con groups.

Abundance in Group 1: decreased abundance in Individuals diagnosed with Type 2 Diabetes Mellitus

NCBI	Quality Control	Links
Anaerostipes
Bacteroides
Bacteroidota
Bilophila
Blautia
Clostridium
Coprococcus
Faecalibacterium
Lachnospira
Lachnospiraceae incertae sedis
Marvinbryantia
Odoribacter
Parasutterella
Phascolarctobacterium
Pseudobutyrivibrio
Roseburia
Ruminococcus
Sphingomonas
Sutterella

Revision editor(s): Madhubani Dey, Aiyshaaaa, Peace Sandy

Signature 2

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Reviewed Marked as Reviewed by Peace Sandy on 2024-1-17

Curated date: 2021/06/27

Curator: Madhubani Dey

Revision editor(s): Lwaldron, Madhubani Dey, Peace Sandy

Source: Figure 2

Description: Figure 2: Composition of the gut microbiome in the DM or Con group. (a, b) Distribution of differential flora at the phylum and genus levels between the DM and Con groups.

Abundance in Group 1: increased abundance in Individuals diagnosed with Type 2 Diabetes Mellitus

NCBI	Quality Control	Links
Actinomyces
Actinomycetota
Akkermansia
Anaerotruncus
Bifidobacterium
Candidatus Saccharibacteria
Citrobacter
Collinsella
Eggerthella
Enterococcus
Escherichia/Shigella sp.
Klebsiella
Lactobacillus
Megasphaera
Parabacteroides
Pseudomonadota
Raoultella
Streptococcus
Subdoligranulum
Verrucomicrobiota
Weissella

Revision editor(s): Lwaldron, Madhubani Dey, Peace Sandy