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Abstract Title:

Fucoxanthin Exerts Cytoprotective Effects against Hydrogen Peroxide-induced Oxidative Damage in L02 Cells.

Abstract Source:

Biomed Res Int. 2018 ;2018:1085073. Epub 2018 Nov 15. PMID: 30581841

Abstract Author(s):

Xia Wang, Yan-Jun Cui, Jia Qi, Min-Min Zhu, Tian-Liang Zhang, Min Cheng, Shun-Mei Liu, Guang-Ce Wang

Article Affiliation:

Xia Wang

Abstract:

Several previous studies have demonstrated the excellent antioxidant activity of fucoxanthin against oxidative stress which is closely related to the pathogenesis of liver diseases. The present work was to investigate whether fucoxanthin could protect human hepatic L02 cells against hydrogen peroxide- (HO-) induced oxidative damage. Its effects on HO-induced cell viability, lactate dehydrogenase (LDH) leakage, intracellular reduced glutathione, and reactive oxygen species (ROS) contents, along with mRNA and protein relative levels of the cytoprotective genes including Nrf2, HO-1, and NQO1, were investigated. The results showed that fucoxanthin could upregulate the mRNA and protein levels of the cytoprotective genes and promote the nuclear translocation of Nrf2, which could be inhibited by the PI3K inhibitor of LY294002. Pretreatment of fucoxanthin resulted in decreased LDH leakage and intracellular ROS content but enhanced intracellular reduced glutathione. Interestingly, pretreatment using fucoxanthin protected against the oxidative damage in a nonconcentration-dependent manner, with fucoxanthin of 5M demonstrating the optimal effects. The results suggest that fucoxanthin exerts cytoprotective effects against HO-induced oxidative damage in L02 cells, which may be through the PI3K-dependent activation of Nrf2 signaling.

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