1. Academic Validation
  2. Soyasapogenol B and Genistein Attenuate Lipopolysaccharide-Induced Memory Impairment in Mice by the Modulation of NF-κB-Mediated BDNF Expression

Soyasapogenol B and Genistein Attenuate Lipopolysaccharide-Induced Memory Impairment in Mice by the Modulation of NF-κB-Mediated BDNF Expression

  • J Agric Food Chem. 2017 Aug 16;65(32):6877-6885. doi: 10.1021/acs.jafc.7b02569.
Hae-Ji Lee 1 Su-Min Lim 1 Da-Bin Ko 1 Jin-Ju Jeong 1 Yun-Ha Hwang 2 Dong-Hyun Kim 1
Affiliations

Affiliations

  • 1 Department of Life and Nanopharmaceutical Sciences, Kyung Hee University , 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
  • 2 DongWha Pharm Research Institute , 35-71, Topsil-ro, Giheung-gu, Yongin-Shi, Gyeonggi 446-902 Korea.
Abstract

Lactobacillus plantarum C29-fermented defatted soybean (FDS), which contains soyasaponins such as soyasaponin I (SI) and soyasapogenol B (SB) and Isoflavones such as genistin (GE) and genistein (GT), attenuated memory impairment in mice. Moreover, in the preliminary study, FDS and its soyasaponins and Isoflavones significantly inhibited NF-κB activation in LPS-stimulated microglial BV2 cells. Therefore, we examined the effects of FDS and its constituents SI, SB, GT, and GE on LPS-induced memory impairment in mice. Oral administration of FDS (80 mg/kg), which has higher concentrations of SB and GE than DS, recovered LPS-impaired cognitive function in Y-maze (55.1 ± 3.5%) and passive avoidance tasks (50.9 ± 19.2 s) to 129.2% (74.1 ± 3.5%) and 114.2% (290.0 ± 22.4 s) of normal mice, respectively (P < 0.05). SB and GE (10 μM) also more potently attenuated LPS-impaired cognitive behavior than SI and GT, respectively. SB (10 mg/kg) was the most effective: treatment recovered LPS-impaired spontaneous alternation and latency time to 105.7% and 126.8% of normal control mice, respectively (P < 0.05). SB and GE significantly increased BDNF expression and CREB phosphorylation in LPS-treated mice and corticosterone-stimulated SH-SY5Y cells. Furthermore, SB and GE (10 μM) also significantly inhibited NF-κB activation in LPS-treated mice. These findings suggested that FDS and its constituent soyasaponins and Isoflavones may attenuate memory impairment by the regulation of NF-κB-mediated BDNF expression.

Keywords

Lactobacillus plantarum; genstein; memory impairment; soyasapogenol B; soybean.

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