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Abstract Title:

Inhibitory Effect of Lychee Seed Saponins on Apoptosis Induced by Aβ25-35 through Regulation of the Apoptotic and NF-κB Pathways in PC12 Cells.

Abstract Source:

Nutrients. 2017 Mar 29 ;9(4). Epub 2017 Mar 29. PMID: 28353652

Abstract Author(s):

Xiuling Wang, Hong Zhang, Jian Liu, Rong Chen, Yong Tang, Haixia Chen, Li Gu, Mao Li, Shousong Cao, Dalian Qin, Jianming Wu

Article Affiliation:

Xiuling Wang

Abstract:

Neuronal apoptosis plays a critical role in the pathogenesis of Alzheimer's disease (AD). Previous studies have shown that lychee seed saponins (LSS), isolated and extracted from traditional Chinese medicine lychee seeds, possess many beneficial activities including anti-oxidation, anti-diabetes, anti-AD, etc. In the present study, we established an in vitro neuronal apoptotic model of PC12 cells induced by Aβ25-35 and studied the effect of LSS on apoptosis by the methods of Hoechst 33342/propidium iodide (PI) fluorescence double staining, Annexin V/PI double staining, and terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick-end labeling (TUNEL). We also investigated the effects of LSS on mitochondria membrane potential, the expressions of Bcl-2 and Bax proteins, and the mRNA expression and the nuclear translocation of NF-κBp65 in PC12 cells. The results showed that LSS markedly inhibited apoptosis, improved the mitochondria membrane potentials, upregulated the expression of Bcl-2 protein, downregulated the expression of Bax protein, and decreased the mRNA expression and nuclear translocation of NF-κBp65 in PC12 cells. The study demonstrated that LSS significantly inhibited apoptosis induced by Aβ25-35 via regulation of the apoptotic and NF-κB pathways in PC12 cells. Therefore, LSS has the potential to be developed as a novel agent or nutrient supplement for the prevention and/or treatment of AD.

Study Type : In Vitro Study

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