OAK

Avenanthramide C as a novel candidate to alleviate osteoarthritic pathogenesis

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Abstract
Osteoarthritis (OA) is a degenerative disorder that can result in the loss of articular cartilage. No effective treatment against OA is currently available. Thus, interest in natural health products to relieve OA symptoms is increasing. However, their qualities such as efficacy, toxicity, and mechanism are poorly understood. In this study, we determined the efficacy of avenanthramide (Avn)-C extracted from oats as a promising candidate to prevent OA progression and its mechanism of action to prevent the expression of matrix-metalloproteinases (MMPs) in OA pathogenesis. Interleukin-1 beta (IL-1 beta), a proinflammatory cytokine as a main causing factor of cartilage destruction, was used to induce OA-like condition of chondrocytes in vitro. Avn-C restrained IL-1 beta-mediated expression and activity of MMPs, such as MMP-3, -12, and -13 in mouse articular chondrocytes. Moreover, Avn-C alleviated cartilage destruction in experimental OA mouse model induced by destabilization of the medial meniscus (DMM) surgery. However, Avn-C did not affect the expression of inflammatory mediators (Ptgs2 and Nos) or anabolic factors (Col2a1, Aggrecan, and Sox9), although expression levels of these genes were upregulated or downregulated by IL-1 beta, respectively. The inhibition of MMP expression by Avn-C in articular chondrocytes was mediated by p38 kinase and c-Jun N-terminal kinase (JNK) signaling, but not by ERK or NF-kappa B. Interestingly, Avn-C added with SB203580 and SP600125 as specific inhibitors of p38 kinase and JNK, respectively, enhanced its inhibitory effect on the expression of MMPs in IL-1 beta treated chondrocytes. Taken together, these results suggest that Avn-C is an effective candidate to prevent OA progression and a natural health product to relieve OA pathogenesis.
Author(s)
Thanh-Tam TranSong, Won-HyunLee, GyuseokKim, Hyung SeokPark, DaehoHuh, Yun-hyunRyu, Je-Hwang
Issued Date
2021-10
Type
Article
DOI
10.5483/BMBRep.2021.54.10.108
URI
https://scholar.gist.ac.kr/handle/local/11249
Publisher
KOREAN SOCIETY BIOCHEMISTRY & MOLECULAR BIOLOGY
Citation
BMB REPORTS, v.54, no.10, pp.528 - 533
ISSN
1976-6696
Appears in Collections:
Department of Life Sciences > 1. Journal Articles
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