Zhuanggu Jianxi Decoction () limits interleukin-1 β-induced degeneration chondrocytes via the caveolin-p38 MAPK signal pathway / 中国结合医学杂志
Chinese journal of integrative medicine
;
(12): 353-359, 2014.
Article
in English
| WPRIM
| ID: wpr-267155
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the effect of Zhuanggu Jianxi Decoction (, ZGJXD) on interleukin-1 β (IL-1 β)-induced degeneration of chondrocytes (CDs) as well as the activation of caveolin-p38 mitogen-activated protein kinase (MAPK) signal pathway, investigating the possible molecular mechanism that ZGJXD treats osteoarthritis.</p><p><b>METHODS</b>Serum pharmacology was applied in the present study, where ZGJXD was orally administrated to New Zealand rabbits and then ZGJXD containing serum (ZGJXD-S) was collected for following in vitro experiments. CDs were isolated aseptically from New Zealand rabbits and then cultured in vitro. Upon IL-1 β stimulation, the degeneration of CDs was verified by inverted microscope, toluidine blue stain and type II collagen immunocytochemistry. After IL-1 β-stimulated CDs were intervened with blank control serum, ZGJXD-S, together with or without SB203580 (a specific inhibitor of p38 MAPK) for 48 h, caveolin-1 protein expression and the phosphorylation level of p38 were determined by Western blotting, and the mRNA expression of IL-1 β, tumor necrosis factor α (TNF-α), matrix metalloproteinase 3 (MMP-3) and MMP-13 were examined by real-time polymerase chain reaction.</p><p><b>RESULTS</b>IL-1 β stimulation induced degeneration of CDs, increased caveolin-1 expression and p38 phosphorylation, up-regulated the mRNA level of IL-1 β, TNF-α, MMP-3 and MMP-13. However, the IL-1 β-induced activation of caveolin-p38 signaling and alteration in the expression of p38 downstream target genes were suppressed by ZGJXD-S and/or SB203580 in CDs.</p><p><b>CONCLUSION</b>ZGJXD can prevent CDs degeneration via inhibition of caveolin-p38 MAPK signal pathway, which might be one of the mechanisms that ZGJXD treats osteoarthritis.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Physiology
/
RNA, Messenger
/
Drugs, Chinese Herbal
/
Base Sequence
/
Blotting, Western
/
DNA Primers
/
Chondrocytes
/
MAP Kinase Signaling System
/
Gene Expression Profiling
Limits:
Animals
Language:
English
Journal:
Chinese journal of integrative medicine
Year:
2014
Type:
Article
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