Articular cartilage and changes in arthritis. An introduction: cell biology of osteoarthritis.

Articular cartilage and changes in arthritis. An introduction: cell biology of osteoarthritis.
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DOI:
10.1186/ar148
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发表时间:
2001
期刊:
Arthritis research
影响因子:
--
通讯作者:
Aigner T
Aigner T
中科院分区:
其他
文献类型:
--
作者:
Sandell LJ;Aigner T

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骨性关节炎中软骨细胞的反应模式可归纳为五类:(1)增殖和细胞死亡(凋亡);(2)合成活性和(3)降解的变化;(4)关节软骨细胞的表型调节;(5)骨赘的形成。在骨关节炎中,主要反应是软骨大分子合成的重新开始,IIA型和III型前胶原的合成开始,作为更原始表型的标志,以及活性蛋白水解酶的合成。恢复成纤维细胞样表型,称为“去分化”,似乎不是一个重要的组成部分。增生在表面附近形成特征性软骨细胞簇中起作用,而细胞凋亡可能主要发生在钙化软骨中。
The reaction patterns of chondrocytes in osteoarthritis can be summarized in five categories: (1) proliferation and cell death (apoptosis); changes in (2) synthetic activity and (3) degradation; (4) phenotypic modulation of the articular chondrocytes; and (5) formation of osteophytes. In osteoarthritis, the primary responses are reinitiation of synthesis of cartilage macromolecules, the initiation of synthesis of types IIA and III procollagens as markers of a more primitive phenotype, and synthesis of active proteolytic enzymes. Reversion to a fibroblast-like phenotype, known as 'dedifferentiation', does not appear to be an important component. Proliferation plays a role in forming characteristic chondrocyte clusters near the surface, while apoptosis probably occurs primarily in the calcified cartilage.
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