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KMID : 1123920160300040242
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Korean Journal of Oriental Physiology and Pathology
2016 Volume.30 No. 4 p.242 ~ p.249
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Effects of Prunellae Herba on the H2O2-Treated LLC-PK₁ Cell's Redox Status and NF-κB Signaling
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Son Jong-Seok
Jung Ji-Chun
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Abstract
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This study was to investigate the anti-inflammatory effects of Prunellae Herba(PH). The generation of superoxide anion radical (?O2-), nitric oxide (NO), peroxynitrite (ONOO-) and Prostaglandin E₂(PGE2) were measured in the H2O2-Treated renal epithelial cells(LLC-PK1 cell) of mouse. And the effects of Prunellae Spica on the expression of NF-κB (p50, p65), IKK-α, phospho-IκB-α and inflammation-related proteins, COX-2, iNOS, IL-1β and VCAM-1, were examined by western blot. The fluorescent probes, 2',7'-dichlorodihydrofluorescein diacetate (DCFDA), 4,5-diaminofluorescein (DAF-2) and dihyldrorhodamine 123 (DHR 123) were used to estimate the scavenging effect of Prunellae Spica on ?O2-, NO, ONOO-. Western blot was conducted to assess the protein expression levels of NF-κB (p50, p65), IKK-α, phospho-IκB-α, inflammation-related proteins, COX-2, iNOS, IL-1β, VCAM-1. PH inhibited H2O2-treated cell death dose-dependently. It reduced the generation of ·O2-, NO, ONOO- and PGE₂ in the H2O2-treated renal epitheial cells(LLC-PK1 cell) of mouse in vitro. PH reduced the expression of NF-κB, IKK-α, phospho-IκB-α, COX-2, iNOS, IL-1β and VCAM-1 genes through means of decreasing activation of NF-κB signaling as well. According to these results, PH has an antioxidative activity and anti-inflammatory effect by regulating the NF-κB pathway. This suggest that PH is expected to be used to regulating inflammatory process and treating inflammation-related disease.
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KEYWORD
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Prunellae Herba, Reactive oxygen species, Reactive nitrogen species, NF-κB, Redox Status, anti-inflammatory
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