Metabolic Factors in Osteoarthritis Progression
Summary
Osteoarthritis is increasingly recognised as driven not only by mechanical wear but by systemic metabolic influences. Insulin resistance, dyslipidaemia and chronic low-grade inflammation intersect to accelerate cartilage breakdown, subchondral bone remodelling and synovial pathology. Adipose tissue acts as an endocrine organ, secreting adipokines that modulate chondrocyte metabolism and inflammatory cell recruitment. Elevated levels of leptin and resistin promote production of matrix-degrading enzymes in cartilage, while reduced adiponectin deprives joint tissues of protective anti-inflammatory signals. Hyperglycaemia fosters advanced glycation end products in collagen networks, compromising matrix resilience and provoking oxidative stress in chondrocytes. Lipid accumulation in bone marrow spaces contributes to trabecular sclerosis and osteophyte formation, while elevated circulating lipids may enhance osteoclast activity via altered receptor signalling. Furthermore, metabolic syndrome components such as hypertension and dysregulated glucose homeostasis potentiate synovial angiogenesis and effusion. A deeper understanding of these pathways has underscored the global health burden of metabolic osteoarthritis, highlighted the potential of lifestyle interventions, lipid-lowering agents and antidiabetic drugs for disease modification, and opened avenues for biomarker-guided early detection and personalised therapeutics.
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Metabolic Factors in Osteoarthritis Progression publication trend
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Technical terms
Adipokine: A signalling protein secreted by adipose tissue that influences inflammation and metabolism.
Dyslipidaemia: Abnormal levels of lipids in the blood, including cholesterol and triglycerides.
Insulin resistance: A reduced cellular response to insulin resulting in impaired glucose uptake.
Osteophyte: A bony outgrowth, also known as a bone spur, typically forming at joint margins.
Bone marrow lesion: A region of altered signal on MRI reflecting oedema or fibrosis in subchondral bone.
Advanced glycation end product (AGE): A compound formed by non-enzymatic glycation of proteins or lipids, contributing to tissue stiffness and inflammation.
References
- Genetic underpinning of the comorbidity between type 2 diabetes and osteoarthritis. American Journal of Human Genetics (2023).
- Metabolic syndrome and the progression of knee osteoarthritis on MRI. Osteoarthritis and Cartilage (2023).
- Impact of diabetes mellitus on osteoarthritis: a scoping review on biomarkers. Expert Reviews in Molecular Medicine (2024).
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