作者
B-C Sondergaard, N Schultz, SH Madsen, A-C Bay-Jensen, M Kassem, MA Karsdal
发表日期
2010/3/1
来源
Osteoarthritis and cartilage
卷号
18
期号
3
页码范围
279-288
出版商
WB Saunders
简介
OBJECTIVES
Matrix metalloproteinases (MMPs) and aggrecanases are essential players in cartilage degradation. However, the signaling pathways that results in MMP and/or aggrecanase synthesis and activation are not well understood. We investigated the molecular events leading to MMP- and aggrecanase-mediated cartilage degradation.
METHODS
Cartilage degradation was induced in bovine articular cartilage explants by oncostatin M (OSM) and tumor necrosis factor (TNF), in the presence or absence of specific inhibitors of the mitogen-activated protein kinases (MAPKs) P38, P44/42 and Src family. Toxicity was followed by the AlamarBlue colorimetric assay. MMP-activity was assessed using a fluorescent substrate assay and MMP-9 and -2 activities by gelatinase zymography. MMP-mediated collagen type II degradation and MMP as well as aggrecanase-mediated aggrecan degradation was investigated …
引用总数
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