Cellular senescence in osteoarthritis pathology

McCulloch K, Litherland GJ, Rai TS · Aging Cell

Osteoarthritis chondrocytes express telomere attrition, an activated DNA-damage response, reactive-oxygen-species secretion, senescence-associated beta-galactosidase, raised p16 and cytokine-driven matrix metalloproteinases relative to chondrocytes from normal cartilage. Because mitosis in normal cartilage is very low, the review attributes chondrocyte telomere shortening to oxidative stress and abnormal mechanical loading rather than to replication alone, and warns that beta-galactosidase staining in cultured cells from diseased joints is not a reliable indicator of senescence in vivo.

Population

Narrative review of cellular senescence in osteoarthritis pathology

Intervention

n/a

Comparator

n/a

Limitations

Narrative review; no funding information provided and no conflict declared. Mechanistic rather than clinical: it reports no human intervention.