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- Title
Sargassum serratifolium Extract Attenuates Interleukin-1β-Induced Oxidative Stress and Inflammatory Response in Chondrocytes by Suppressing the Activation of NF-κB, p38 MAPK, and PI3K/Akt.
- Authors
Park, Cheol; Jeong, Jin-Woo; Lee, Dae-Sung; Yim, Mi-Jin; Lee, Jeong Min; Han, Min Ho; Kim, Suhkmann; Kim, Heui-Soo; Kim, Gi-Young; Park, Eui Kyun; Jeon, You-Jin; Cha, Hee-Jae; Choi, Yung Hyun
- Abstract
Osteoarthritis (OA) is a degenerative joint disease that is characterized by irreversible articular cartilage destruction by inflammatory reaction. Among inflammatory stimuli, interleukin-1β (IL-1β) is known to play a crucial role in OA pathogenesis by stimulating several mediators that contribute to cartilage degradation. Recently, the marine brown alga <italic>Sargassum serratifolium</italic> has been reported to exhibit antioxidant and anti-inflammatory effects in microglial and human umbilical vein endothelial cell models using lipopolysaccharide and tumor necrosis factor-α, but its beneficial effects on OA have not been investigated. This study aimed to evaluate the anti-osteoarthritic effects of ethanol extract of <italic>S. serratifolium</italic> (EESS) in SW1353 human chondrocytes and, in parallel, primary rat articular chondrocytes. Our results showed that EESS effectively blocked the generation of reactive oxygen species in IL-1β-treated SW1353 and rat primary chondrocytes, indicating that EESS has a potent antioxidant activity. EESS also attenuated IL-1β-induced production of nitric oxide (NO) and prostaglandin E2, major inflammatory mediators in these cells, which was associated with the inhibition of inducible NO synthase and cyclooxygenase-2 expression. Moreover, EESS downregulated the level of gene expression of matrix metalloproteinase (MMP)-1, -3 and -13 in SW1353 chondrocytes treated with IL-1β, resulting in their extracellular secretion reduction. In addition, the IL-1β-induced activation of nuclear factor-kappa B (NF-κB) was restored by EESS. Furthermore, EESS reduced the activation of p38 mitogen-activated protein kinase (MAPK) and phosphatidylinositol-3-kinase (PI3K)/Akt signaling pathways upon IL-1β stimulation. These results indicate that EESS has the potential to exhibit antioxidant and anti-inflammatory effects through inactivation of the NF-κB, p38 MAPK, and PI3K/Akt signaling pathways. Collectively, these findings demonstrate that EESS may have the potential for chondroprotection, and extracts of <italic>S. serratifolium</italic> could potentially be used in the prevention and treatment of OA.
- Subjects
OSTEOARTHRITIS; INFLAMMATION; JOINT diseases; PROTEIN kinases; REACTIVE oxygen species
- Publication
International Journal of Molecular Sciences, 2018, Vol 19, Issue 8, p2308
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms19082308