Spondyloarthritis & psoriatic arthritis

Serum IL-23 significantly decreased in obese patients with psoriatic arthritis six months after a structured weight loss intervention

Arthritis Res TherPublished Prospective cohort study

Authors' conclusion

Weight loss was associated with decreased levels of leptin and cytokines, in particular IL-23.

Study context

Population
Obese patients with PsA (body mass index (BMI) ≥ 33 kg/m²) and controls matched on sex, age and weightPsA and matched controls
Exposure
Serum cytokines and adipokines at M6 vs baseline (BL) after Very Low Energy Diet (VLED) weight loss intervention, in PsA and matched controls
Outcome
Change in serum cytokines and adipokines (Magnetic Luminex Assays)
Follow-up
M6
Methodological detailsbefore–after (baseline vs 6 months), matched controls (sex, age and weight), retrospectively registered
  • Before–after (baseline vs 6 months)
  • Matched controls (sex, age and weight)
  • Retrospectively registered

Main finding

As reported in the abstract

Serum IL-23 in PsA
  • M6 vs BL: P < 0.001

Observational data: associations, not effects.

Further findings

OutcomeP value
Serum leptin in PsA · M6Significantly decreasedP < 0.001

Serum tot-adiponectin and high molecular weight (HMW) adiponectin in PsA · M6

Increased significantly

Cytokines and adipokines in controls · M6

Similar findings were found in controls

Correlation of ∆BMI with ∆IL-23 in PsA

rS
0.671
  • p < 0.001
  • Positive correlation

Correlations of ΔBMI with other changes in PsA

Significant positive correlations with ΔDAS28CRP, ΔCRP, ΔTNF-α, ΔIL-13, ∆IL-17 and Δleptin
Negative correlation with Δtot-adiponectin

Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.

Original publication

Serum IL-23 significantly decreased in obese patients with psoriatic arthritis six months after a structured weight loss intervention. Arthritis Res Ther. Published 27 July 2023. doi:10.1186/s13075-023-03105-8

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