Effects of aging on articular cartilage homeostasis.

Effects of aging on articular cartilage homeostasis.
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DOI:
10.1016/j.bone.2012.03.023
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发表时间:
2012-08
期刊:
影响因子:
4.1
通讯作者:
Loeser RF
Loeser RF
中科院分区:
医学2区
文献类型:
--
作者:
Lotz M;Loeser RF

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本文就关节软骨细胞和细胞外基质的衰老相关变化作一综述。主要的细胞外基质变化是软骨厚度减少、蛋白水解、糖基化和钙化进展。细胞变化包括细胞密度降低,分泌异常的细胞衰老,细胞防御机制和合成代谢反应受损。细胞外和细胞内的变化相互复合,导致生物力学功能障碍和组织破坏。讨论了与年龄相关的变化对关节稳态和骨关节炎风险的影响。
This review is focused on aging-related changes in cells and extracellular matrix of the articular cartilage. Major extracellular matrix changes are a reduced thickness of cartilage, proteolysis, advanced glycation and calcification. The cellular changes include reduced cell density, cellular senescence with abnormal secretory profiles, and impaired cellular defense mechanisms and anabolic responses. The extracellular and cellular changes compound each other, leading to biomechanical dysfunction and tissue destruction. The consequences of aging-related changes for joint homeostasis and risk for osteoarthritis are discussed.
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