Open Access

Ginkgolide B‑induced AMPK pathway activation protects astrocytes by regulating endoplasmic reticulum stress, oxidative stress and energy metabolism induced by Aβ1‑42

  • Authors:
    • Jing Wang
    • Yan Ding
    • Linwu Zhuang
    • Zhenzhong Wang
    • Wei Xiao
    • Jingbo Zhu
  • View Affiliations

  • Published online on: April 16, 2021     https://doi.org/10.3892/mmr.2021.12096
  • Article Number: 457
  • Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Ginkgolide B (GB), the diterpenoid lactone compound isolated from the extracts of Ginkgo biloba leaves, significantly improves cognitive impairment, but its potential pharmacological effect on astrocytes induced by β‑amyloid (Aβ)1‑42 remains to be elucidated. The present study aimed to investigate the protective effect and mechanism of GB on astrocytes with Aβ1‑42‑induced apoptosis in Alzheimer's disease (AD). Astrocytes obtained from Sprague Dawley rats were randomly divided into control, Aβ, GB and GB + compound C groups. Cell viability and apoptosis were analyzed using Cell Counting Kit‑8 and flow cytometry assays, respectively. Protein and mRNA expression levels were analyzed using western blotting and reverse transcription‑quantitative PCR, respectively. The levels of superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GSH‑Px), reactive oxygen species (ROS) and ATP were determined using the corresponding commercial kits. The findings revealed that GB attenuated Aβ1‑42‑induced apoptosis and the 5' adenosine monophosphate‑ activated protein kinase (AMPK) inhibitor compound C reversed the protective effects of GB. In addition, GB reversed Aβ1‑42‑induced oxidative damage and energy metabolism disorders, including decreases in the levels of SOD, GSH‑Px and ATP and increased the levels of MDA and ROS in astrocytes, while compound C reversed the anti‑oxidative effect and the involvement of GB in maintaining energy metabolism in astrocytes. Finally, GB decreased the expression levels of the endoplasmic reticulum stress (ERS) proteins and the apoptotic protein CHOP and increased both mRNA and protein expression of the components of the energy metabolism‑related AMPK/peroxisome proliferator‑activated receptor γ coactivator 1α/peroxisome proliferator‑activated receptor α and anti‑oxidation‑related nuclear respiratory factor 2/heme oxygenase 1/NAD(P)H dehydrogenase (quinone 1) pathways and downregulated the expression of β‑secretase 1. However, compound C could antagonize these effects. In conclusion, the findings demonstrated that GB protected against Aβ1‑42‑induced apoptosis by inhibiting ERS, oxidative stress, energy metabolism disorders and Aβ1‑42 production probably by activating AMPK signaling pathways. The findings provided an innovative insight into the treatment using GB as a therapeutic in Aβ1‑42‑related AD.
View Figures
View References

Related Articles

Journal Cover

June-2021
Volume 23 Issue 6

Print ISSN: 1791-2997
Online ISSN:1791-3004

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Wang J, Ding Y, Zhuang L, Wang Z, Xiao W and Zhu J: Ginkgolide B‑induced AMPK pathway activation protects astrocytes by regulating endoplasmic reticulum stress, oxidative stress and energy metabolism induced by Aβ1‑42. Mol Med Rep 23: 457, 2021
APA
Wang, J., Ding, Y., Zhuang, L., Wang, Z., Xiao, W., & Zhu, J. (2021). Ginkgolide B‑induced AMPK pathway activation protects astrocytes by regulating endoplasmic reticulum stress, oxidative stress and energy metabolism induced by Aβ1‑42. Molecular Medicine Reports, 23, 457. https://doi.org/10.3892/mmr.2021.12096
MLA
Wang, J., Ding, Y., Zhuang, L., Wang, Z., Xiao, W., Zhu, J."Ginkgolide B‑induced AMPK pathway activation protects astrocytes by regulating endoplasmic reticulum stress, oxidative stress and energy metabolism induced by Aβ1‑42". Molecular Medicine Reports 23.6 (2021): 457.
Chicago
Wang, J., Ding, Y., Zhuang, L., Wang, Z., Xiao, W., Zhu, J."Ginkgolide B‑induced AMPK pathway activation protects astrocytes by regulating endoplasmic reticulum stress, oxidative stress and energy metabolism induced by Aβ1‑42". Molecular Medicine Reports 23, no. 6 (2021): 457. https://doi.org/10.3892/mmr.2021.12096