The imbalance of gut microbiota and its correlation with plasma inflammatory cytokines in pemphigus vulgaris patients

Study information

Needs review

study design

case-control

Citation

PMID PubMed identifier for scientific articles.

31211854

DOI Digital object identifier for electronic documents.

10.1111/sji.12799

URI Uniform resource identifier for web resources.

Authors

Huang S, Mao J, Zhou L, Xiong X, Deng Y

Journal

Scandinavian journal of immunology

Year

2019

Pemphigus vulgaris (PV) is an autoimmune disease characterized by the production of IgG autoantibodies owing to an imbalance in the Th1/Th2 and Th17/Tregs cell pathways. The role of gut microbiota in the development of immune system and autoimmune diseases has been unraveled in the last two decades. However, data pertaining to gut microbiota of PV patients is largely lacking. We aimed to compare the gut microbiota of PV patients and healthy controls and assessed potential correlation with circulating cytokines of Th1/Th2/Th17 cell. Faecal bacterial diversity was analysed in 18 PV patients and 14 age- and gender-matched healthy individuals using hypervariable tag sequencing of the V3-V4 region of the 16S rRNA gene. Plasma levels of 20 inflammatory cytokines were assessed using the Luminex screening system. As a result, we identified 10 differentially abundant taxa between patients and controls. At the genera level, Lachnospiracea_incertae_sedis and Coprococcus decreased, while Granulicatella, Flavonifractor enriched in PV. Plasma levels of C5a, interleukin (IL)-2R, IL-6, IL-8, IL-7, IL-1β, IL17A, IL-5 and IL-21 were significantly increased in PV Flavonifractor exhibited a positive correlation with C5a, IL-6, IL-8, IL-7, IL-1β, IL17A and IL-21. Lachnospiracea_incertae_sedis and Coprococcus showed a negative correlation with IL-17A. Our results are consistent with the hypothesis that PV patients have gut microbial dysbiosis which might contribute to the immune disorder and the development of PV.

Experiment 1

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Reviewed Marked as Reviewed by Chloe on 2022/03/14

Curated date: 2021/01/10

Curator: WikiWorks

Revision editor(s): 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: pemphigus vulgaris familial pemphigus vulgaris,pemphigus vulgaris,pemphigus vulgaris, familial,PV

Group 0 name Corresponds to the control (unexposed) group for case-control studies: healthy control
Group 1 name Corresponds to the case (exposed) group for case-control studies: pemphigus vulgaris
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: pemphigus vulgaris
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: 18
Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any): 6 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: 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

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: unchanged
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 Chloe on 2022/03/14

Curated date: 2021/01/10

Curator: Lucy Mellor

Revision editor(s): Chloe, WikiWorks

Source: Figure 2b

Description: Bacterial taxa difference between pemphigus vulgaris (PV) patients and healthy controls

Abundance in Group 1: increased abundance in pemphigus vulgaris

NCBI	Links
Abiotrophia
Aerococcaceae
Bacilli
Carnobacteriaceae
Coprobacillus
Enterobacterales
Enterobacteriaceae
Flavonifractor
Gammaproteobacteria
Granulicatella
Lactobacillales
Streptococcaceae
Escherichia/Shigella sp.