Int. J. Mol. Sci. 2013, 14(5), 9820-9833; doi:10.3390/ijms14059820
Article

Anti-Inflammatory Effect of Ginsenoside Rg5 in Lipopolysaccharide-Stimulated BV2 Microglial Cells

1 Department of Molecular Medicine and Tissue Injury Defense Research Center, Ewha Womans University Medical School, Seoul 110-783, Korea 2 Department of Life and Nanopharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 130-701, Korea
* Author to whom correspondence should be addressed.
Received: 17 February 2013; in revised form: 8 April 2013 / Accepted: 2 May 2013 / Published: 8 May 2013
(This article belongs to the Section Bioactives and Nutraceuticals)
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Abstract: Microglia are resident immune cells in the central nervous system. They play a role in normal brain development and neuronal recovery. However, overactivation of microglia causes neuronal death, which is associated with neurodegenerative diseases, such as Parkinson’s disease and Alzheimer’s disease. Therefore, controlling microglial activation has been suggested as an important target for treatment of neurodegenerative diseases. In the present study, we investigated the anti-inflammatory effect of ginsenoside Rg5 in lipopolysaccharide (LPS)-stimulated BV2 microglial cells and rat primary microglia. The data showed that Rg5 suppressed LPS-induced nitric oxide (NO) production and proinflammatory TNF-α secretion. In addition, Rg5 inhibited the mRNA expressions of iNOS, TNF-α, IL-1b, COX-2 and MMP-9 induced by LPS. Further mechanistic studies revealed that Rg5 inhibited the phophorylations of PI3K/Akt and MAPKs and the DNA binding activities of NF-kB and AP-1, which are upstream molecules controlling inflammatory reactions. Moreover, Rg5 suppressed ROS production with upregulation of hemeoxygenase-1 (HO-1) expression in LPS-stimulated BV2 cells. Overall, microglial inactivation by ginsenoside Rg5 may provide a therapeutic potential for various neuroinflammatory disorders.
Keywords: ginsenoside Rg5; microglia; neuroinflammation; iNOS; cytokine; signaling pathway

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MDPI and ACS Style

Lee, Y.Y.; Park, J.-S.; Jung, J.-S.; Kim, D.-H.; Kim, H.-S. Anti-Inflammatory Effect of Ginsenoside Rg5 in Lipopolysaccharide-Stimulated BV2 Microglial Cells. Int. J. Mol. Sci. 2013, 14, 9820-9833.

AMA Style

Lee YY, Park J-S, Jung J-S, Kim D-H, Kim H-S. Anti-Inflammatory Effect of Ginsenoside Rg5 in Lipopolysaccharide-Stimulated BV2 Microglial Cells. International Journal of Molecular Sciences. 2013; 14(5):9820-9833.

Chicago/Turabian Style

Lee, Yu Y.; Park, Jin-Sun; Jung, Ji-Sun; Kim, Dong-Hyun; Kim, Hee-Sun. 2013. "Anti-Inflammatory Effect of Ginsenoside Rg5 in Lipopolysaccharide-Stimulated BV2 Microglial Cells." Int. J. Mol. Sci. 14, no. 5: 9820-9833.

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