COX-2, NO, and cartilage damage and repair.

被引:109
作者
Amin A.R. [1 ]
Dave M. [1 ]
Attur M. [1 ]
Abramson S.B. [1 ]
机构
[1] Medicine, Hospital for Joint Diseases, Room 1410, 301 East 17th Street, New York, 10003, NY
关键词
Nitric Oxide; Cartilage Explants; Osteoarthritis Cartilage; Human Articular Chondrocytes; Chondrocyte Apoptosis;
D O I
10.1007/s11926-000-0019-5
中图分类号
学科分类号
摘要
The production of nitric oxide (NO) and prostaglandin E2 (PGE(2)) is increased in human osteoarthritis-affected cartilage. These and other inflammatory mediators are spontaneously released by OA cartilage explants ex vivo. The excessive production of nitric oxide inhibits matrix synthesis, and promotes its degradation. Furthermore, by reacting with oxidants such as superoxide anion, nitric oxide promotes cellular injury, and renders the chondrocyte susceptible to cytokine-induced apoptosis. PGE(2) exerts both anabolic and catabolic effects on chondrocytes, depending on the microenvironment and physiological condition. Thus, NO and PGE(2), produced by activated chondrocytes in diseased cartilage, may modulate disease rogression in osteoarthritis, and should therefore be considered potential targets for therapeutic intervention
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页码:447 / 453
页数:6
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