Cited by 28Stress Responses and CortisolTreatment of Major DepressionNeuroscience and Neuropharmacology Research

Early Life Stress Increases Brain Glutamate and Induces Neurobehavioral Manifestations in Rats

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Guan, Jitian, Ding, Yan, Rong, Yunjie, Geng, Yiqun, Lai, Lingfeng, Qi, Dan, Tang, Yanyan, Yang, Lin +4 more·2020·ACS Chemical Neuroscience

Abstract

Early life stress (ELS) is associated with an increased risk of developing depression and anxiety disorders. Disturbances of the neurobiological glutamatergic system are implicated in depression; however, the long-term effects of ELS on glutamate (Glu) metabolites remain unclear. Our study used 7T proton magnetic resonance spectroscopy (7T 1 H MRS) to detect metabolic Glu in a rat model to investigate maternal deprivation (MD)-induced ELS. MD was established in Sprague–Dawley rats by periodic separation from mothers and peers. Changes in the hippocampal volume and Glu metabolism were detected by 7T 1 H MRS after testing for depression-like behavior via open field, sucrose preference, and Morris water maze tests. Adult MD offspring exhibited depression-like behavior. Compared to the control, the MD group exhibited reduced ratio of central activity time to total time and decreased sucrose consumption ( p < 0.05). MD rats spent less time in the fourth quadrant, where the platform was originally placed, in the Morris water maze test. According to 7T 1 H MRS, hippocampus of MD rats had elevated Glu and glutamate + glutamine (Glu+Gln) levels compared with the control group hippocampi, but Gln, γ-aminobutyric acid (GABA), and glutamate + glutamine (Glu+Gln) in the prefrontal cortex of MD rats showed a downward trend. Depression-like behavior and cognition deficits related to ELS may induce region-specific changes in Glu metabolism in the prefrontal cortex and hippocampus. The novel, noninvasive 7T 1 H MRS-identified associations between Glu levels and ELS may guide future clinical studies.

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Crossref · 10.1021/acschemneuro.0c00454

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Authors
Guan, J., Ding, Y., Rong, Y., Geng, Y., Lai, L., Qi, D., Tang, Y., Yang, L., Li, J., Zhou, T., Wu, E., & Wu, R.
Affiliations
  • Shantou University (CN)
  • Guangzhou Eighth People's Hospital (CN)
  • Baylor Scott & White Medical Center - Temple (US)
  • Zhengzhou University (CN)
  • Texas A&M Health Science Center (US)
Corresponding author
Wu, Renhua
Venue
ACS Chemical Neuroscience
Published
2020-11-12
Volume
11
Issue
24
Pages
4169-4178
ISSN
1948-7193 (ISSN-L)
OpenAlex
W3104161020
Cited by
28
References
56
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2023: 10 · 2022: 4 · 2021: 5 · 2020: 2
FWCI
3.03
Type
journal article
Language
en
Open access
Locations
  • ACS Chemical Neuroscience (publishedVersion)
  • SSRN Electronic Journal (acceptedVersion)
  • PubMed (publishedVersion)
Funders
  • Government of Guangdong Province (00218119101)
  • Li Ka Shing Foundation (2020LKSFG05D)
  • Department of Education of Guangdong Province (2015034)
  • Shantou University (NTF10010)
  • National Natural Science Foundation of China (30930027, 31870981, 60971075, 61902232, 82020108016)
  • Natural Science Foundation of Guangdong Province (2015A030313444, S2011010005194)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
early life stress, maternal deprivation, glutamate metabolism, glutamate/glutamine, hippocampus, prefrontal cortex, depression-like behavior, anxiety-like behavior, cognitive impairment, GABA, sucrose preference, Morris water maze
MeSH terms
Animals, Behavior, Animal, Brain, Depression, Glutamine, Stress, Psychological, Rats, Sprague-Dawley, Glutamic Acid, Rats, Proton Magnetic Resonance Spectroscopy

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