New treatment may revive busted knees, eliminate joint replacement

Key Points:

• Researchers at Stanford Medicine have discovered a breakthrough treatment in older mice that regenerates damaged knee cartilage and prevents osteoarthritis by inhibiting the protein 15-PGDH, which increases with age and contributes to tissue degeneration.
• The treatment works by altering gene activity in existing cartilage cells rather than relying on stem cells, leading to the production of smooth articular cartilage essential for healthy joint movement.
• In mice with traumatic knee injuries, the 15-PGDH inhibitor reduced the likelihood of developing osteoarthritis, suggesting potential for both injury recovery and age-related cartilage degeneration.
• Preliminary tests on human osteoarthritis cartilage samples showed decreased 15-PGDH levels and cartilage degradation, indicating the treatment's promise beyond animal models.
• Although an oral 15-PGDH inhibitor is already proven safe for age-related muscle weakness in humans, clinical trials are necessary to confirm its safety and effectiveness for cartilage regeneration in people.