Subgingival Microbiome in Rheumatoid Arthritis Patients with Periodontitis

Study information

Needs review

study design

case-control

Citation

PMID PubMed identifier for scientific articles.

36077282

DOI Digital object identifier for electronic documents.

10.3390/ijms23179883

URI Uniform resource identifier for web resources.

Authors

Chen YJ, Hung WC, Chou YH, Lai CH, Peng P, Jhou PS, Tsai MR, Sheu JJ, Yen JH

Journal

International journal of molecular sciences

Year

2022

Rheumatoid arthritis (RA) and periodontitis are suggested to be closely linked based on microbial dysbiosis, but limited subgingival bacteria have been proven in the pathogenesis of RA. We enrolled 30 RA patients and 25 controls and divided them into three groups with matched age, gender, and diabetes statuses: group AM (all of the matched participants), group PD (periodontally diseased), and group PH (periodontally healthy). Their subgingival microbial composition was determined by V3-V4 16S rRNA gene sequencing. Significant differences in subgingival microbial clustering between the RA patients and controls were observed in groups AM and PD. Among the taxa enriched in RA, Aminipila butyrica and Peptococcus simiae were the only two species displaying positive correlation to the level of anti-citrullinated protein antibodies (ACPAs) in both of the groups. Surprisingly, the median of relative abundances of A. butyrica and P. simiae were 0% in the controls of group PD. Furthermore, a gene encoding arginine deiminase with the capability to produce citrulline was addressed in the complete genome sequence of A. butyrica. This is the first study to elucidate the important roles of A. butyrica and P. simiae as periodontal bacteria leading to RA possibly through the induction of ACPA production.

Experiment 1

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Needs review

Curated date: 2022/11/02

Curator: Tislam

Revision editor(s): Tislam, WikiWorks753

Subjects

Location of subjects: Taiwan

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: Subgingival dental plaque Subgingival plaque,Subgingival dental plaque

Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology: arthritis arthritic joint disease,arthritides,arthritis,inflammation of skeletal joint,inflammatory disorder of joint,skeletal joint inflammation

Group 0 name Corresponds to the control (unexposed) group for case-control studies: healthy
Group 1 name Corresponds to the case (exposed) group for case-control studies: Rheumatoid Arthritis
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: rheumatoid arthritis patients
Group 0 sample size Number of subjects in the control (unexposed) group: 25
Group 1 sample size Number of subjects in the case (exposed) group: 30
Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any): 3 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): .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: 4

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

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness: decreased
Chao1 Abundance-based estimator of species richness: decreased