Osteoarthritis

Serum levels of hydroxylated metabolites of arachidonic acid cross-sectionally and longitudinally predict knee pain progression: an observational cohort study

Osteoarthritis CartilagePublished Prospective cohort study

Authors' conclusion

Serum levels of a combination of hydroxylated metabolites of arachidonic acid may have prognostic utility for knee pain

Study context

Population
Participants in the Knee Pain in the Community (KPIC) cohort studyKPIC cohort
Participants
154 participants
Outcome
Associations of serum oxylipins with knee pain (NRS item 3, average pain)/radiographic osteoarthritis (OA) (KL) at baseline and with knee pain at follow-up
Follow-up
3 years
Methodological detailsobservational, linear regression, ROC analysis
  • Observational
  • Linear regression
  • ROC analysis

Main finding

As reported in the abstract

Longitudinal association of baseline serum oxylipins with follow-up knee pain (NRS item 3, average pain) · 3 year follow-up

Baseline serum 5-HETE, β

1.724 (0.677-2.77) (95% CI)

Observational data: associations, not effects.

Further findings

Cross-sectional association with current self-reported knee pain (numerical rating scale (NRS) item 3, average pain) · baseline

Serum 14,15-DHET, β
0.827 (0.34-1.31) (95% CI)
Serum 12-HETE, β
4.090 (1.92-6.26) (95% CI)
Serum anandamide, β
3.060 (1.35-4.77) (95% CI)

Cross-sectional association with Kellgren and Lawrence (KL) scores · baseline

Serum 9-HETE, β
0.467 (0.18-0.75) (95% CI)
Serum 15-HETE, β
0.759 (0.29-1.22) (95% CI)
Serum 14-hydroxydocosahexaenoic acid, β
0.483 (0.24-0.73) (95% CI)

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

Original publication

Serum levels of hydroxylated metabolites of arachidonic acid cross-sectionally and longitudinally predict knee pain progression: an observational cohort study. Osteoarthritis Cartilage. Published 20 April 2024. doi:10.1016/j.joca.2024.04.006

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