Weight loss and liraglutide treatment were evaluated for their effects on NGAL, an inflammatory marker linked to osteoarthritis, in overweight patients with knee OA.
52-week trialRandomized placebo-controlled assessment of liraglutide effects on inflammatory OA biomarker NGAL
What the researchers found
Study evaluated whether diet-induced weight loss and subsequent liraglutide treatment reduce NGAL, a proinflammatory biomarker linked to osteoarthritis.
Why it matters
If GLP-1 drugs reduce inflammatory markers driving joint disease, they could address both obesity and osteoarthritis simultaneously.
The numbers in context
N=168 enrolled, 127 randomized; NGAL rose 93.0 ng/mL (95% CI: 18.9-167.1, P=0.015) after 8-week diet; no difference between liraglutide and placebo at 52 weeks.
How the study worked
Secondary analysis of a randomized, double-blind, placebo-controlled trial (8-week LCD + 52-week liraglutide 3 mg vs. placebo).
Who was studied
Adults with BMI >=27 and symptomatic knee osteoarthritis
What this study cannot tell us
Secondary/exploratory analysis — not powered for NGAL as primary endpoint. Single biomarker does not capture full OA pathophysiology.
How to read the evidence
Secondary analysis of a well-designed RCT — robust design but exploratory endpoint limits strength of conclusions.
When this study was published
Published in 2025, exploring an emerging connection between GLP-1 drugs and joint health.
The bigger picture
This positions GLP-1 drugs at the intersection of metabolic and musculoskeletal disease, expanding their potential therapeutic reach.
Questions still open
- Does NGAL reduction translate to improved joint symptoms?
- Would longer GLP-1 treatment show greater NGAL effects?
Common questions
Could GLP-1 drugs help with arthritis?
What is NGAL?
Read the original research
Effect of weight loss and liraglutide on neutrophil gelatinase-associated lipocalin levels among individuals with overweight and knee osteoarthritis: Exploratory analyses of a randomized controlled trial.
Osteoarthritis and cartilage open, 7(1), 100562
Citation
Poulsen, Asbjørn Seenithamby; Stisen, Zara Rebecca; Skougaard, Marie; Christensen, Robin; Overgaard, Anders; Gudbergsen, Henrik; Jacobsen, Stine; Balslev-Clausen, Andreas Peter; Henriksen, Marius; Kristensen, Lars Erik; Bliddal, Henning. (2025). Effect of weight loss and liraglutide on neutrophil gelatinase-associated lipocalin levels among individuals with overweight and knee osteoarthritis: Exploratory analyses of a randomized controlled trial.. Osteoarthritis and cartilage open, 7(1), 100562. https://doi.org/10.1016/j.ocarto.2024.100562