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http://dx.doi.org/10.14374/HFS.2021.29.4.167

Hepatoprotective effect of Ikwiseungyang-tang via Nrf2 activation  

Jin, Hyo Jeong (College of Korean Medicine, Daegu Haany University)
Park, Sang Mi (College of Korean Medicine, Daegu Haany University)
Kim, Eun Ok (College of Korean Medicine, Daegu Haany University)
Kim, Sang Chan (College of Korean Medicine, Daegu Haany University)
Publication Information
Herbal Formula Science / v.29, no.4, 2021 , pp. 167-179 More about this Journal
Abstract
Objectives : Oxidative stress is a important cause of liver disease, and regulation of oxidative stress is essential to maintain the normal metabolic function of the liver. Until a recent date, there has been no studies on the hepatoprotective effect of Ikwiseungyang-tang (IWSYT). Therefore, this study aims to demonstrate the hepatoprotective effect of IWSYT and its related molecular mechanisms on arachidonic acid (AA) + iron induced oxidative stress model in HepG2 cells. Methods : To determine the cytoprotective effect of IWSYT against AA + iron-induced oxidative stress, cell viability, apoptosis-related proteins, intracellular reactive oxygen species (ROS), GSH, and mitochondrial membrane potential (MMP) were measured. Nuclear factor erythroid 2-related factor 2 (Nrf2) activation was analyzed by immunoblot analysis. In addition, Nrf2 transcription activation through ARE binding was measured by reporter gene assays, and the expression of the Nrf2 target antioxidant genes were confirmed by immunoblot analysis. Results : IWSYT increased cell viability from cell death induced by AA + Iron, and inhibited apoptosis by regulating apoptosis-related proteins. Furthermore, IWSYT protected cells by inhibiting intracellular ROS production, GSH depletion, and MMP degradation. Nrf2 activation was increased by IWSYT, and Nrf2 target genes were activated by IWSYT too. Conclusions : These results suggest that IWSYT can protect hepatocytes from oxidative stress through Nrf2 activation and can be potentially applied in the prevention and treatment of liver damage.
Keywords
Ikwiseungyang-tang (IWSYT); oxidative stress; Nrf2; HepG2 cells;
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