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Abstract Title:

Natural ingredients-derived antioxidants attenuate HO-induced oxidative stress and have chondroprotective effects on human osteoarthritic chondrocytes via Keap1/Nrf2 pathway.

Abstract Source:

Free Radic Biol Med. 2020 Jan 31. Epub 2020 Jan 31. PMID: 32014502

Abstract Author(s):

Junjun Yang, Xiongbo Song, Yong Feng, Na Liu, Zhenlan Fu, Jiangyi Wu, Tao Li, Hao Chen, Jiajia Chen, Cheng Chen, Liu Yang

Article Affiliation:

Junjun Yang

Abstract:

Osteoarthritis (OA) is the most common disabling joint disease and its pathological process is closely related to oxidative stress. Recent studies have shown that antioxidants allicin, sulforaphane, and lycopene derived from natural ingredients garlic, broccoli, and tomato can reduce the degree of oxidative stress and the expression of inflammatory markers, indicating that theses antioxidants might be helpful for OA treatment. In this study, we investigated the effects of allicin, sulforaphane, and lycopene on HO-stimulated human osteochondral samples and osteoarthritic chondrocytes. Our results revealed that allicin, sulforaphane, and lycopene effectively reduced the oxidative stress-induced cell apoptosis, and increased gene expression of antioxidant enzymes. Besides, these natural ingredients-derived antioxidants reduced the expression of inflammatory factors, enhanced the chondrogenic matrix synthesis, and reduced the hypertrophic differentiation of osteoarthritic chondrocytes. These regulations were mainly through the activation of Keap1/Nrf2 pathway. Our findings suggest that these antioxidants might be a potential therapeutic strategy for OA.

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