Sjögren's disease & overlap diseases

Kynurenine pathway can be a potential biomarker of fatigue in primary Sjögren's syndrome

Clin Exp RheumatolPublished Cross-sectional study

Authors' conclusion

Serum markers related to the kynurenine pathway, especially the kynurenine/tryptophan ratio, may be associated with severity of fatigue in pSS.

Study context

Population
Patients with Primary Sjögren's syndrome (pSS) from a prospective cohort, and age- and sex-matched healthy controls (HC)
Participants
81 pSS patients
Exposure
Severe fatigue vs less fatigue pSS patients vs HC
  • Severe fatiguen = 44
  • Less fatiguen = 37
Outcome
Relationship between severity of fatigue (ESSPRI fatigue domain) and kynurenine pathway serum markers (ELISA)
Methodological detailsprospective cohort, age- and sex-matched healthy controls
  • Prospective cohort
  • Age- and sex-matched healthy controls

Main finding

As reported in the abstract

Kynurenine pathway markers by fatigue severity

Correlation of kynurenine/tryptophan ratio with fatigue severity in pSS (r)

0.624

Observational data: associations, not effects.

Original publication

Kynurenine pathway can be a potential biomarker of fatigue in primary Sjögren's syndrome. Clin Exp Rheumatol. Published 1 December 2022. doi:10.55563/clinexprheumatol/cp4st9

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