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Learning and memory impairment induced by 1,4-butanediol is regulated by ERK1/2-CREB-BDNF signaling pathways in PC12 cells

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Abstract

1,4-butanediol (1,4-BD) is a known γ-hydroxybutyric acid (GHB) precursor which affects the nervous system after ingestion, leading to uncontrolled behavioral consequences. In the present study, we investigated whether 1,4-BD induces oxidative stress and inflammation in PC12 cells and evaluated the toxic effects of 1,4-BD associates with learning and memory. CCK-8 results revealed a dose–effect relationship between the cell viability of PC12 cells and 1,4-BD when the duration of action was 2 h or 4 h. Assay kits results showed that 1,4-BD decreased the levels of Glutathione (GSH), Glutathione peroxidase (GSH-px), Superoxide dismutase (SOD), Acetylcholine (Ach) and increased the levels of Malondialdehyde (MDA), Nitric oxide (NO) and Acetylcholinesterase (AchE). Elisa kits results indicated that 1,4-BD decreased the levels of synaptophysin I (SYN-1), Postsynaptic density protein-95 (PSD-95), Growth associated protein-43 (GAP-43) and increased the levels of Tumor necrosis factor alpha (TNF-α) and Interleukin- 6 (IL-6). RT-PCR results showed that the mRNA levels of PSD-95, SYN-1 and GAP-43 were significantly decreased. The expression of phosphorylation extracellular signal-regulated protein kinase 1/2 (p-ERK1/2), phosphorylation cAMP response element binding protein (p-CREB) and brain-derived neurotrophic factor (BDNF) proteins were significantly decreased in PC12 cells by protein blotting. Overall, these results suggest that 1,4-BD may affect synaptic plasticity via the ERK1/2-CREB-BDNF pathway, leading to Ach release reduction and ultimately to learning and memory impairment. Furthermore, oxidative stress and inflammation induced by 1,4-BD may also result in learning and memory deficits. These findings will enrich the toxicity data of 1.4-BD associated with learning and memory impairment.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors thank all of the individuals who assisted in this study. In particular, we thank the South China Agricultural University for providing a good laboratory environment.

Funding

This work were supported by the Guangdong Key R&D Program, Department of Science and Technology of Guangdong Province (No. 2019B020210002), Natural Science Foundation of Guangdong Province (No. 2021A1515010825) and Guangdong Provincial Key Laboratory of Food Quality and Safety (NO.2020B1212060059).

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Conceptualization: CC, LB, HL. Literature search: CC, HH, XX, GO. Original draft preparation: CC, LB, YR. Reviewing and editing: CC, HL, CL.

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Correspondence to Chunhong Liu.

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Congying Chen, Lingling Bu, Huan Liu, Yifeng Rang, Huiying Huang, Xueman Xiao, Genghua Ou and Chunhong Liu have no conflicts of interest that are directly relevant to the content of this study.

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Chen, C., Bu, L., Liu, H. et al. Learning and memory impairment induced by 1,4-butanediol is regulated by ERK1/2-CREB-BDNF signaling pathways in PC12 cells. Metab Brain Dis 37, 1451–1463 (2022). https://doi.org/10.1007/s11011-022-00963-0

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