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Article Publish Status: FREE
Abstract Title:

Neuroprotective effects of ginsenoside Rb1 on hippocampal neuronal injury and neurite outgrowth.

Abstract Source:

Neural Regen Res. 2014 May 1 ;9(9):943-50. PMID: 25206916

Abstract Author(s):

Juan Liu, Jing He, Liang Huang, Ling Dou, Shuang Wu, Qionglan Yuan

Article Affiliation:

Juan Liu

Abstract:

Ginsenoside Rb1 has been reported to exert anti-aging and anti-neurodegenerative effects. In the present study, we investigate whether ginsenoside Rb1 is involved in neurite outgrowth and neuroprotection against damage induced by amyloid beta (25-35) in cultured hippocampal neurons, and explore the underlying mechanisms. Ginsenoside Rb1 significantly increased neurite outgrowth in hippocampal neurons, and increased the expression of phosphorylated-Akt and phosphorylated extracellular signal-regulated kinase 1/2. These effects were abrogated by API-2 and PD98059, inhibitors of the signaling proteins Akt and MEK. Additionally, cultured hippocampal neurons were exposed to amyloid beta (25-35) for 30 minutes; ginsenoside Rb1 prevented apoptosis induced by amyloid beta (25-35), and this effect was blocked by API-2 and PD98059. Furthermore, ginsenoside Rb1 significantly reversed the reduction in phosphorylated-Akt and phosphorylated extracellular signal-regulated kinase 1/2 levels induced by amyloid beta (25-35), and API-2 neutralized the effect of ginsenoside Rb1. The present results indicate that ginsenoside Rb1 enhances neurite outgrowth and protects against neurotoxicity induced by amyloid beta (25-35) via a mechanism involving Akt and extracellular signal-regulated kinase 1/2 signaling.

Study Type : In Vitro Study

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