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Neuroprotective effects of ginsenosides on neural progenitor cells against oxidative injury.

ABSTRACT: Ginsenosides exhibit various neuroprotective effects against oxidative stress. However, which ginsenoside provides optimal effects for the treatment of neurological disorders as a potent antioxidant remains to be elucidated. Therefore, the present study investigated and compared the neuroprotective effects of the Rb1, Rd, Rg1 and Re ginsenosides on neural progenitor cells (NPCs) following tert-Butylhydroperoxide (t-BHP)-induced oxidative injury. Primary rat embryonic cortical NPCs were prepared from E14.5 embryos of Sprague-Dawley rats. The oxidative injury model was established with t?BHP. A lactate dehydrogenase assay and terminal deoxynucleotidyl transferase dUTP nick?end labeling staining were used to measure the viability of the NPCs pre?treated with ginsenosides under oxidative stress. Reverse transcription?quantitative polymerase chain reaction analysis was used to determine the activation of intracellular signaling pathways triggered by the pretreatment of ginsenosides. Among the four ginsenosides, only Rb1 attenuated t?BHP toxicity in the NPCs, and the nuclear factor (erythroizd?derived 2)?like 2/heme oxygenase?1 pathway was found to be key in the intracellular defense against oxidative stress. The present study demonstrated the anti-oxidative effects of ginsenoside Rb1 on NPCs, and suggested that Rb1 may offer potential as a potent antioxidant for the treatment of neurological disorders.

SUBMITTER: Ye J

PROVIDER: S-EPMC4805061 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature

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Neuroprotective effects of ginsenosides on neural progenitor cells against oxidative injury.

Ye Jun J Yao Jian-Ping JP Wang Xu X Zheng Minying M Li Peng P He Chengwei C Wan Jian-Bo JB Yao Xiaoli X Su Huanxing H

Molecular medicine reports 20160219 4

Ginsenosides exhibit various neuroprotective effects against oxidative stress. However, which ginsenoside provides optimal effects for the treatment of neurological disorders as a potent antioxidant remains to be elucidated. Therefore, the present study investigated and compared the neuroprotective effects of the Rb1, Rd, Rg1 and Re ginsenosides on neural progenitor cells (NPCs) following tert-Butylhydroperoxide (t-BHP)-induced oxidative injury. Primary rat embryonic cortical NPCs were prepared ...[more]

PMID: 26935530

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Project description:BACKGROUND:Hericium erinaceus is a culinary and medicinal mushroom in Traditional Chinese Medicines. It has numerous pharmacological effects including immunomodulatory, anti-tumour, anti-microbial, anti-aging and stimulation of nerve growth factor (NGF) synthesis, but little is known about its potential role in negating the detrimental effects of oxidative stress in depression. The present study investigated the neuroprotective effects of H. erinaceus standardised aqueous extract (HESAE) against high-dose corticosterone-induced oxidative stress in rat pheochromocytoma (PC-12) cells, a cellular model mimicking depression. METHODS:PC-12 cells was pre-treated with HESAE for 48?h followed by 400??M corticosterone for 24?h to induce oxidative stress. Cells in complete medium without any treatment or pre-treated with 3.125??g/mL desipramine served as the negative and positive controls, respectively. The cell viability, lactate dehydrogenase (LDH) release, endogenous antioxidant enzyme activities, aconitase activity, mitochondrial membrane potentials (MMPs), intracellular reactive oxygen species (ROS) levels and number of apoptotic nuclei were quantified. In addition, HESAE ethanol extract was separated into fractions by chromatographic methods prior to spectroscopic analysis. RESULTS:We observed that PC-12 cells treated with high-dose corticosterone at 400??M had decreased cell viability, reduced endogenous antioxidant enzyme activities, disrupted mitochondrial function, and increased oxidative stress and apoptosis. However, pre-treatment with HESAE ranging from 0.25 to 1?mg/mL had increased cell viability, decreased LDH release, enhanced endogenous antioxidant enzyme activities, restored MMP, attenuated intracellular ROS and protected from ROS-mediated apoptosis. The neuroprotective effects could be attributed to significant amounts of adenosine and herierin III isolated from HESAE. CONCLUSIONS:HESAE demonstrated neuroprotective effects against high-dose corticosterone-induced oxidative stress in an in vitro model mimicking depression. HESAE could be a potential dietary supplement to treat depression.

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Neuroprotective effects of ginsenosides on neural progenitor cells against oxidative injury.

Publications

Neuroprotective effects of ginsenosides on neural progenitor cells against oxidative injury.

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