摘要
To the Editor： Osteoarthritis （OA） has the highest prevalence and economic impact among arthritic maladies and is the most common cause of long-term disability among individuals over 65 years of age. OA is characterized by the degeneration of articular cartilage and the loss of cartilage matrix in affected joints. It is widely accepted that an imbalance between the biosynthesis and the degradation of extracellular matrix （ECM） occurs in OA cartilage.
To the Editor： Osteoarthritis （OA） has the highest prevalence and economic impact among arthritic maladies and is the most common cause of long-term disability among individuals over 65 years of age. OA is characterized by the degeneration of articular cartilage and the loss of cartilage matrix in affected joints. It is widely accepted that an imbalance between the biosynthesis and the degradation of extracellular matrix （ECM） occurs in OA cartilage.
基金
This study was supported by grants from the National Natural Science Foundation of China （No. 81072478 and No. 81273298） and Shanghai Municipal Commission of Health and Family Planning, Key Developing Disciplines （No. 2015ZB0501 ）.
