Hypertrophic differentiation of chondrocytes in osteoarthritis: the developmental aspect of degenerative joint disorders.

Hypertrophic differentiation of chondrocytes in osteoarthritis: the developmental aspect of degenerative joint disorders.
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DOI:
10.1186/ar3117
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发表时间:
2010
影响因子:
4.9
通讯作者:
Dreier R
Dreier R
中科院分区:
医学2区
文献类型:
--
作者:
Dreier R

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骨关节炎的特征在于关节软骨的进行性退化,导致关节功能丧失。调节骨关节炎发病机制和进展的分子机制知之甚少。值得注意的是,这种关节疾病的一些特征类似于骨骼发育过程中通过软骨内骨化的软骨细胞分化过程。在健康的关节软骨中,软骨细胞抵抗增殖和终末分化。相比之下,患病软骨中的软骨细胞进行性增殖并发展成肥大。此外,关节软骨的血管化和局灶性钙化开始。因此,在骨关节炎期间调节生长软骨和永久性关节软骨中的软骨细胞活性的信号分子是改善疾病的骨关节炎疗法的有趣靶点。
Osteoarthritis is characterized by a progressive degradation of articular cartilage leading to loss of joint function. The molecular mechanisms regulating pathogenesis and progression of osteoarthritis are poorly understood. Remarkably, some characteristics of this joint disease resemble chondrocyte differentiation processes during skeletal development by endochondral ossification. In healthy articular cartilage, chondrocytes resist proliferation and terminal differentiation. By contrast, chondrocytes in diseased cartilage progressively proliferate and develop hypertrophy. Moreover, vascularization and focal calcification of joint cartilage are initiated. Signaling molecules that regulate chondrocyte activities in both growth cartilage and permanent articular cartilage during osteoarthritis are thus interesting targets for disease-modifying osteoarthritis therapies.
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