Abstract:
AIMS:Accumulation of advanced glycation end products (AGEs) plays a pivotal role in the mechanism by which aging contributes to osteoarthritis (OA). In the present study, we examined the effect of curcumin, a pharmacologically safe phytochemical agent, on AGE-induced tumor necrosis factor-α (TNF-α) and matrix metalloproteinase-13 (MMP-13) in rabbit chondrocytes. METHODS:Chondrocytes were derived from rabbit articular cartilage by enzymatic digestion. TNF-α and MMP-13 mRNA was monitored by RT-PCR. TNF-α protein was determined using cytokine-specific ELISA. The reactive oxygen species was determined by the fluorescent probe 29,79-dichlorofluorescein diacetate. The phosphorylation and nuclear translocation of the nuclear factor-ĸB (NF-ĸB) system were studied by Western blot and immunofluorescence respectively. RESULTS:Curcumin significantly decreased AGE-stimulated TNF-α and MMP-13 mRNA and suppressed the NF-ĸB activation via inhibition of ĸBα (I-ĸBα) phosphorylation, I-ĸBα degradation and p65 nuclear translocation. CONCLUSIONS:These novel pharmacological actions of curcumin on AGE-stimulated chondrocytes provide new suggestions that curcumin has nutritional potential as a naturally occurring anti-inflammatory agent for treating OA.
journal_name
Pharmacologyjournal_title
Pharmacologyauthors
Yang Q,Wu S,Mao X,Wang W,Tai Hdoi
10.1159/000345345subject
Has Abstractpub_date
2013-01-01 00:00:00pages
77-85issue
1-2eissn
0031-7012issn
1423-0313pii
000345345journal_volume
91pub_type
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