Cells of the synovium in rheumatoid arthritis. Osteoclasts.

Cells of the synovium in rheumatoid arthritis. Osteoclasts.
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DOI:
10.1186/ar2110
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发表时间:
2007
影响因子:
4.9
通讯作者:
Schett G
Schett G
中科院分区:
医学2区
文献类型:
--
作者:
Schett G

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破骨细胞是造血来源的多核细胞,是主要的骨吸收细胞。在邻近骨部位的滑膜组织中发现大量破骨细胞,产生吸收凹坑和局部骨质破坏。它们配备了特定的酶和质子泵,使它们能够分别降解骨基质和溶解钙。发炎关节的滑膜组织具有特别高的积累破骨细胞的潜力,因为它含有单核细胞/巨噬细胞(其功能为破骨细胞前体),以及提供驱动破骨细胞形成的特定分子信号的细胞。因此,破骨细胞代表了关节炎症和结构损伤之间的联系,因为它们吸收关节附近的矿化组织并破坏关节结构。
Osteoclasts are multinucleated cells of hematopoietic origin and are the primary bone resorbing cells. Numerous osteoclasts are found within the synovial tissue at sites adjacent to bone, creating resorption pits and local bone destruction. They are equipped with specific enzymes and a proton pump that enable them to degrade bone matrix and solubilize calcium, respectively. The synovial tissue of inflamed joints has a particularly high potential to accumulate osteoclasts because it harbors monocytes/macrophages, which function as osteoclast precursors, as well as cells that provide the specific molecular signals that drive osteoclast formation. Osteoclasts thus represent a link between joint inflammation and structural damage since they resorb mineralized tissue adjacent to the joint and destroy the joint architecture.
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