KMID : 0352720210450060665
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Journal of Ginseng Research 2021 Volume.45 No. 6 p.665 ~ p.675
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Ginsenoside Rg1 alleviates A¥â deposition by inhibiting NADPH oxidase 2 activation in APP/PS1 mice
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Zhang Han
Su Yong Sun Zhenghao Chen Ming Han Yuli Li Yan Dong Xianan Ding Shixin Fang Zhirui Li Weiping Li Weizu
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Abstract
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Background: Ginsenoside Rg1 (Rg1), an active ingredient in ginseng, may be a potential agent for the treatment of Alzheimer¡¯s disease (AD). However, the protective effect of Rg1 on neurodegeneration in AD and its mechanism of action are still incompletely understood.
Methods: Wild type (WT) and APP/PS1 AD mice, from 6 to 9 months old, were used in the experiment. The open field test (OFT) and Morris water maze (MWM) were used to detect behavioral changes. Neuronal damage was assessed by hematoxylin and eosin (H&E) and Nissl staining. Immunofluorescence, western blotting, and quantitative real-time polymerase chain reaction (q-PCR) were used to examine postsynaptic density 95 (PSD95) expression, amyloid beta (A¥â) deposition, Tau and phosphorylated Tau (p-Tau) expression, reactive oxygen species (ROS) production, and NAPDH oxidase 2 (NOX2) expression.
Results: Rg1 treatment for 12 weeks significantly ameliorated cognitive impairments and neuronal damage and decreased the p-Tau level, amyloid precursor protein (APP) expression, and A¥â generation in APP/PS1 mice. Meanwhile, Rg1 treatment significantly decreased the ROS level and NOX2 expression in the hippocampus and cortex of APP/PS1 mice.
Conclusions: Rg1 alleviates cognitive impairments, neuronal damage, and reduce A¥â deposition by inhibiting NOX2 activation in APP/PS1 mice.
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KEYWORD
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Ginsenoside Rg1, A¥â deposition, NADPH oxidase 2, APP/PS1 mice, Alzheimer¡¯s disease
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