Cited by 20Effects and risks of endocrine disrupting chemicalsNeuroscience and Neuropharmacology ResearchPharmacological Effects and Toxicity Studies

Maternal Exposure to Di-(2-ethylhexyl) Phthalate Impairs Hippocampal Synaptic Plasticity in Male Offspring: Involvement of Damage to Dendritic Spine Development

Dong, Jing, Fu, Hui, Fu, Yuanyuan, You, Mingdan, Li, Xudong, Wang, Chaonan, Leng, Kunkun, Wang, Yuan +1 more·2021·ACS Chemical Neuroscience

Abstract

Exposure to di-(2-ethylhexyl) phthalate (DEHP), a widely used kind of plasticizer, can result in neurodevelopment impairments and learning and memory disorders. We studied the effects and possible mechanisms of maternal DEHP treatment on hippocampal synaptic plasticity in offspring. Pregnant Wistar rats were randomly divided into four groups and received 0, 30, 300, 750 (mg/kg)/d DEHP by gavage from gestational day (GD) 0 to postnatal day (PN) 21. Our data showed that DEHP exposure impaired hippocampal synaptic plasticity, damaged synaptic ultrastructure, and decreased synaptic protein levels in male pups. Furthermore, DEHP decreased the density of dendritic spines, affected F-actin polymerization, and downregulated the Rac1/PAK/LIMK1/cofilin signaling pathway in male offspring. However, the alterations in the hippocampi of female offspring were not observed. These results illustrate that maternal DEHP exposure could impair hippocampal synaptic plasticity by affecting synaptic structure and dendritic spine development in male offspring, which may be attributed to altered cytoskeleton construction induced by downregulation of the Rac1/PAK/LIMK1/cofilin signaling pathway.

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Crossref · 10.1021/acschemneuro.0c00612

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  1. Schober W., 1986, J. Hirnforsch., 27, 121

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Authors
Dong, J., Fu, H., Fu, Y., You, M., Li, X., Wang, C., Leng, K., Wang, Y., & Chen, J.
Affiliations
China Medical University (CN)
Corresponding author
  • Dong, Jing
  • Chen, Jie
Venue
ACS Chemical Neuroscience
Published
2021-01-07
Volume
12
Issue
2
Pages
311-322
ISSN
1948-7193 (ISSN-L)
OpenAlex
W3119813837
Cited by
20
References
64
Citations by year
2026: 3 · 2025: 5 · 2024: 5 · 2023: 2 · 2022: 3 · 2021: 2
FWCI
1.07
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Chemical Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Natural Science Foundation of Liaoning Province (2019JH3/10300439)
  • National Natural Science Foundation of China (81472943)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Pharmacological Effects and Toxicity Studies
Keywords
DEHP, plasticizers, maternal exposure, hippocampus, synaptic plasticity, dendritic spine development, synaptic ultrastructure, F-actin polymerization, cytoskeleton, sex differences, developmental neurotoxicity, learning and memory
MeSH terms
Animals, Diethylhexyl Phthalate, Female, Hippocampus, Humans, Male, Neuronal Plasticity, Phthalic Acids, Pregnancy, Prenatal Exposure Delayed Effects, Rats, Wistar, Maternal Exposure, Dendritic Spines, Rats

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