期刊
GENETICS AND MOLECULAR RESEARCH
卷 15, 期 2, 页码 -出版社
FUNPEC-EDITORA
DOI: 10.4238/gmr.15027963
关键词
Advanced glycation end-products; Chondrocytes; NF-kappa B; Reactive oxygen species; TGF-beta; Matrix metalloproteinase-9
资金
- Natural Science Foundation of the Inner Mongolia Autonomous Region [2014MS08136]
Peroxisome proliferator-activated receptor is closely associated with the pathogenesis of osteoarthritis. The level of exogenous advanced glycation end-products (AGEs) in articular cartilage is highly associated with the severity of osteoarthritic lesions. However, their interactions and role in promoting osteoarthritisprogression remain unclear. Here, we investigated the effect of AGEs on transforming growth factor (TGF)-beta and matrix metalloproteinase (MMP)-9 expression, and discussed the correlation between AGEs and osteoarthritis, possible signaling pathways and mechanism in rabbit chondrocytes. TGF-beta and MMP-9 mRNA and protein expression, catalase (CAT) and superoxide dismutase (SOD) activity, and malondialdehyde (MDA) and reactive oxygen species (ROS) levels were analyzed in chondrocytes treated with different concentrations of AGEs using RT-PCR and/or western blot; we detected NF-kappa B nuclear translocation by immunofluorescence. AGE treatment significantly increased TGF-beta and MMP-9 mRNA and protein expression compared to controls (P < 0.01) in a dose-dependent manner (highest at 100 mu g/mL). AGE-induced TGF-beta and MMP-9 expressions in chondrocytes were significantly inhibited by anti-RAGE and PDTC (0.1 mM) treatment (P < 0.01). Furthermore, AGE-treatment significantly decreased CAT and SOD activity and increased MDA levels in a concentration-dependent manner compared to controls (P < 0.05), significantly promoting NF-kappa B nuclear translocation. AGE significantly inhibited the increased expression of TGF-beta and MMP9, and induced chondrocyte damage. Its mechanism is associated with RAGE activation, increased ROS expression, and activation of the NF-kappa B signaling pathways.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据