Time-dependent aggrecan gene expression of articular chondrocytes in response to hyperosmotic loading
نویسندگان
چکیده
منابع مشابه
Sphingosine-1-phosphate attenuates proteoglycan aggrecan expression via production of prostaglandin E2 from human articular chondrocytes
BACKGROUND Sphingosine-1-phosphate (S1P), a downstream metabolite of ceramide, induces various bioactivities via two distinct pathways: as an intracellular second messenger or through receptor activation. The receptor for S1P (S1PR) is the family of Endothelial differentiation, sphingolipid G-protein-coupled receptor (EDG). We have here attempted to reveal the expression of EDG/S1PR in human ar...
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Chondrocytes are the uniquely resident cells found in all types of cartilage and key to their function is the ability to respond to mechanical loads with changes of metabolic activity. This mechanotransduction property is, in part, mediated through the activity of a range of expressed transmembrane channels; ion channels, gap junction proteins, and porins. Appropriate expression of ion channels...
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Background: Recent studies have provided evidence that integrins play roles in recognition of mechanical stimuli and its translation into a cellular response. Integrin signaling may be regulated by a number of mechanisms including accessory proteins such as CD98 (4F2 antigen). Objectives: To determine CD98 expression by human articular chondrocytes and its involvement in human articular mechano...
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Given the difficulties in accessing articular cartilage as a source of chondrocytes to be used in fabricating cartilage constructs, alternative sources are required. The present study examined chondrocytes from costal cartilage for their suitability in cartilage tissue engineering. Chondrocytes isolated from rat knee and rib hyaline cartilage were separately mixed with alginate and placed in a ...
متن کاملp38MAPK mediates IL-1-induced down-regulation of aggrecan gene expression in human chondrocytes.
The pleiotropic cytokine interleukin 1 (IL-1) is considered to be the principal inducer of mediators of cartilage degradation in both, osteoarthritis (OA) and rheumatoid arthritis (RA). IL-1 activates numerous signaling pathways involved in cartilage destruction and dedifferentiation of chondrocytes. In this study, we analyzed expression and functional effects of IL-1 in human chondrocytes. We ...
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ژورنال
عنوان ژورنال: Osteoarthritis and Cartilage
سال: 2001
ISSN: 1063-4584
DOI: 10.1053/joca.2001.0473