Article Publish Status: FREE
Abstract Title:

Ginsenoside Rb1 attenuates activated microglia-induced neuronal damage.

Abstract Source:

Neural Regen Res. 2014 Feb 1 ;9(3):252-9. PMID: 25206809

Abstract Author(s):

Lining Ke, Wei Guo, Jianwen Xu, Guodong Zhang, Wei Wang, Wenhua Huang

Article Affiliation:

Lining Ke


The microglia-mediated inflammatory reaction promotes neuronal damage under cerebral ischemia/hypoxia conditions. We therefore speculated that inhibition of hypoxia-induced microglial activation may alleviate neuronal damage. To test this hypothesis, we co-cultured ginsenoside Rb1, an active component of ginseng, and cortical neurons. Ginsenoside Rb1 protected neuronal morphology and structure in a single hypoxic culture system and in a hypoxic co-culture system with microglia, and reduced neuronal apoptosis and caspase-3 production. The protective effect was observable prior to placing in co-culture. Additionally, ginsenoside Rb1 inhibited levels of tumor necrosis factor-α in a co-culture system containing activated N9 microglial cells. Ginsenoside Rb1 also significantly decreased nitric oxide and superoxide production induced by N9 microglia. Our findings indicate that ginsenoside Rb1 attenuates damage to cerebral cortex neurons by downregulation of nitric oxide,superoxide, and tumor necrosis factor-α expression in hypoxia-activated microglia.

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