Astaxanthin protects against osteoarthritis via Nrf2: a guardian of cartilage homeostasis

SCOPE: Osteoarthritis (OA) is a progressive disease characterized by cartilage degradation. Astaxanthin (Ast), a natural compound with remarkable antioxidant activity and multiple medical applications due to its activation of Nrf2 signaling, has been studied for application to various degenerative diseases. Currently, however, little is known about its efficacy in treating OA. This study reports the effects of Ast on cartilage homeostasis in OA progression. METHODS: cartilage degradation were examined. RESULTS: by demonstrating that Ast attenuates the severity of cartilage destruction in a mouse model of OA. CONCLUSIONS: Ast could protect against osteoarthritis via the Nrf2 signaling, suggesting Ast might be a potential therapeutic supplement for OA treatment.