Gut microbiota imbalance and its correlations with hormone and inflammatory factors in patients with stage 3/4 endometriosis

From BugSigDB
Needs review
study design
Citation
PMID PubMed identifier for scientific articles.
DOI Digital object identifier for electronic documents.
URI
Authors
Shan J, Ni Z, Cheng W, Zhou L, Zhai D, Sun S, Yu C
Journal
Archives of gynecology and obstetrics
Year
2021
Keywords:
Dysbiosis, Endometriosis, Estradiol, Gut microbiota, Inflammatory factors
Endometriosis (EM) in reproductive females has an incidence of 6-10% and greatly affects female fertility, quality of life, and long-term health. The gut microbiota can affect the physiological and pathological processes of humans through various pathways, such as those involving the nervous and endocrine systems and immunity, and it plays important roles in endocrine and inflammatory diseases. Whether the gut microbiota plays a role in EM has gradually attracted researchers' attention. In the present study, fecal and blood samples were collected from 12 patients with stage 3/4 EM and 12 healthy controls. We performed 16S rRNA high-throughput sequencing to compare the gut microbiota between the EM and control groups. Serum levels of hormones and inflammatory cytokines were measured. We found that compared with the control group, the EM group had a lower α diversity of gut microbiota and a higher Firmicutes/Bacteroidetes ratio. The abundances of various taxa (such as Actinobacteria, Tenericutes, Blautia, Bifidobacterium, Dorea, and Streptococcus) were significantly different between the two groups. The taxon with the highest abundance in the EM group was Prevotella_7, and that in the control group was Coprococcus_2. The serum levels of E2 and IL-8 were significantly higher in the EM group than in the control group (E2: EM group 74.7 ± 22.5 pg/L vs CON group 47.9 ± 12.5 pg/L; IL-8: EM group 6.39 ± 1.59 pg/mL vs CON group 4.14 ± 0.73 pg/mL). Additionally, the gut microbiota of the EM group was enriched for the microbial function categories environmental information processing, endocrine system, and immune system. Correlations were detected between each of Blautia and Dorea abundance and estradiol level and between Subdoligranulum abundance and IL-8 level. This study elucidated the associations between the gut microbiota and both serum hormones and inflammatory factors in EM. However, the findings need to be verified in future studies.

Experiment 1


Needs review

Curated date: 2021/08/09

Curator: Samara.Khan

Revision editor(s): Samara.Khan, WikiWorks

Subjects

Location of subjects
China
Host species Species from which microbiome was sampled (if applicable)
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
Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
endometriosis endometriosis,Endometriosis (clinical),endometriosis (disease),Endometriosis (disorder),Endometriosis (morphologic abnormality),ENDOMETRIOSIS NEC,Endometriosis NOS,Endometriosis NOS (disorder),Endometriosis of other specified sites,Endometriosis, site unspecified
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
Stage 3/4 endometriosis patients
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
Women were diagnosed with endometriosis via laparoscopic surgery and stages were categorized according to the revised American Society for Reproductive Medicine scoring system (r-ASRM).
Group 0 sample size Number of subjects in the control (unexposed) group
12
Group 1 sample size Number of subjects in the case (exposed) group
12
Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any)
None

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

Statistical test
LEfSe
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
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
Simpson Estimator of species richness and species evenness: more weight on species evenness
unchanged
Richness Number of species
decreased

Signature 1

Needs review

Curated date: 2021/08/09

Curator: Samara.Khan

Revision editor(s): Samara.Khan

Source: Figure 2, Figure 3 and Results section

Description: Patients with endometriosis demonstrated a significantly higher abundance of the following taxa compared to control patients. There were 36 taxa unique to endometriosis patients that were completely absent in control patients. Some taxa were excluded because they had an unidentified genus/ species

Abundance in Group 1: increased abundance in Stage 3/4 endometriosis patients

NCBI Quality ControlLinks
Actinomycetota
Actinomyces
Alphaproteobacteria
Anaerobutyricum hallii
Bifidobacterium
Blautia
Dorea
Eggerthella
Enterococcus
Fusobacteriota
Hyphomicrobiales
Lactobacillales
Lactobacillus
Lactococcus
Muribaculaceae
Rhodocyclaceae
Rhodocyclales
Ruminiclostridium
Streptococcaceae
Streptococcus
[Eubacterium] brachy
[Ruminococcus] gnavus
Clostridium
Corynebacterium
Enterobacterales
Enterobacteriaceae
Clostridiaceae
Bacilli
Enterococcaceae
Lactobacillaceae

Revision editor(s): Samara.Khan

Signature 2

Needs review

Curated date: 2021/08/09

Curator: Samara.Khan

Revision editor(s): Samara.Khan

Source: Figure 2, Figure 3 and Results section

Description: The following taxa were decreased in endometriosis patients and increased in the control group. There were 11 genera unique to the control group. Some taxa were excluded because they had an unidentified genus/ species

Abundance in Group 1: decreased abundance in Stage 3/4 endometriosis patients

NCBI Quality ControlLinks
Lachnospira
Lachnospira eligens
Odoribacter
Parasutterella
Ruminiclostridium
Ruminococcus sp.
Betaproteobacteria
Burkholderiales
Alcaligenaceae
Sutterella
Porphyromonadaceae

Revision editor(s): Samara.Khan