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Molecules 2014, 19(3), 3012-3024;

Ginsenoside Rb1 Protects Rat Neural Progenitor Cells against Oxidative Injury

State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
Author to whom correspondence should be addressed.
Received: 6 January 2014 / Revised: 13 February 2014 / Accepted: 3 March 2014 / Published: 7 March 2014
(This article belongs to the Special Issue Natural Antioxidants and Ageing)
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Ginseng, the root of Panax ginseng C.A. Meyer, has been used as a tonic to enhance bodily functions against various ailments for hundreds of years in Far Eastern countries without apparent adverse effects. Ginsenoside Rb1, one of the most active ingredients of ginseng, has been shown to possess various pharmacological activities. Here we report that Rb1 exhibits potent neuroprotective effects against oxidative injury induced by tert-butylhydroperoxide (t-BHP). Lactate dehydrogenase (LDH) assay demonstrated that incubation with 300 µm t-BHP for 2.5 h led to a significant cell loss of cultured rat embryonic cortex-derived neural progenitor cells (NPCs) and the cell viability was pronouncedly increased by 24 h pretreatment of 10 µm Rb1. TUNEL staining further confirmed that pretreatment of Rb1 significantly reduced the cell apoptosis in t-BHP-induced oxidative injury. Real time PCR revealed that pretreatment with Rb1 activated Nrf2 pathway in cultured NPCs and led to an elevated expression of HO-1. The results of the present study demonstrate that Rb1 shows a potent anti-oxidative effect on cultured NPCs by activating Nrf2 pathway. View Full-Text
Keywords: ginsenoside Rb1; neural progenitor cells; oxidative stress; Nrf2 ginsenoside Rb1; neural progenitor cells; oxidative stress; Nrf2

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Ni, N.; Liu, Q.; Ren, H.; Wu, D.; Luo, C.; Li, P.; Wan, J.-B.; Su, H. Ginsenoside Rb1 Protects Rat Neural Progenitor Cells against Oxidative Injury. Molecules 2014, 19, 3012-3024.

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