| Literature DB >> 17882702 |
Aki Namba1, Yukiko Aida, Naoto Suzuki, Yusuke Watanabe, Takayuki Kawato, Masafumi Motohashi, Masao Maeno, Hideo Matsumura, Mitsuhiko Matsumoto.
Abstract
Elevated concentrations of interleukin (IL)-6 and soluble IL-6 receptor (sIL-6Ralpha) in synovial fluid have been implicated in joint cartilage destruction. We examined the effect of IL-6 and sIL-6Ralpha on cell growth, alkaline phosphatase (ALPase) activity, and the expression of Sox-9, type II collagen, aggrecan core, link protein, BMP-7, and BMP receptors in human chondrocytes. Cell proliferation increased slightly in the presence of both IL-6 and sIL-6Ralpha, whereas ALPase activity decreased markedly. The expression of Sox-9 and aggrecan core did not change in the presence or absence of IL-6 and sIL-6Ralpha, whereas the expression of type II collagen, link protein, BMP-7, and BMP receptors increased in the presence of both IL-6 and sIL-6Ralpha. These results suggest that IL-6 and sIL-6Ralpha suppress the differentiation of chondrocytes and induce the repair of arthrodial cartilage through an increase in the expression of cartilage matrix proteins, BMP-7, and BMP receptors in the cells.Entities:
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Year: 2007 PMID： 17882702 DOI： 10.1080/03008200701587513
Source DB: PubMed Journal: Connect Tissue Res ISSN： 0300-8207 Impact factor: 3.417