Rheumatoid arthritis

Impaired immune tolerance mediated by reduced Tfr cells in rheumatoid arthritis linked to gut microbiota dysbiosis and altered metabolites

Arthritis Res TherPublished Case-control study

Authors' conclusion

The breakdown of immune tolerance mediated by reduced Tfr cells was associated with the altered gut microbiotas and their metabolites implying the possible mechanism of RA pathogenesis from the perspective of microecology-metabolism-immune.

Study context

Population
New-onset rheumatoid arthritis (RA) patients and healthy controls, Second Hospital of Shanxi Medical University, January 2022 to June 2022
Participants
32 vs 17
Comparison
New-onset RA vs healthy controls
  • RAn = 32
  • Healthy controls (HCs)n = 17reference
Outcome
Gut microbiotas and their metabolites in RA and their association with Tfr cell-mediated immune tolerance
Methodological detailssingle-centre, 16S rDNA sequencing, metabolomic profiling, flow cytometry
  • Single-centre
  • 16S rDNA sequencing
  • Metabolomic profiling
  • Flow cytometry

Main finding

As reported in the abstract

Ruminococcus 2 as potential biomarker of RA, AUC
0.782
Ruminococcus 2 AUC 95% CI
0.636-0.929
Ruminococcus 2 AUC P
P = 0.001
Differential metabolites identified, in four main pathways related to RA
11
Arachidonic acid as potential biomarker of RA, AUC
0.724
Arachidonic acid AUC 95% CI
0.595-0.909
Arachidonic acid AUC P
P = 0.038

Observational data: associations, not effects.

Original publication

Impaired immune tolerance mediated by reduced Tfr cells in rheumatoid arthritis linked to gut microbiota dysbiosis and altered metabolites. Arthritis Res Ther. Published 13 January 2024. doi:10.1186/s13075-023-03260-y

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