Cited by 76Maternal Mental Health During Pregnancy and PostpartumStress Responses and CortisolNeuroendocrine regulation and behavior

Gestational stress induces persistent depressive‐like behavior and structural modifications within the postpartum nucleus accumbens

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Haim, Achikam, Sherer, Morgan, Leuner, Benedetta·2014·European Journal of Neuroscience

Abstract

Postpartum depression (PPD) is a common complication following childbirth experienced by one in every five new mothers. Pregnancy stress enhances vulnerability to PPD and has also been shown to increase depressive‐like behavior in postpartum rats. Thus, gestational stress may be an important translational risk factor that can be used to investigate the neurobiological mechanisms underlying PPD. Here we examined the effects of gestational stress on depressive‐like behavior during the early/mid and late postpartum periods and evaluated whether this was accompanied by altered structural plasticity in the nucleus accumbens (NA c), a brain region that has been linked to PPD. We show that early/mid (postpartum day 8) postpartum female rats exhibited more depressive‐like behavior in the forced swim test as compared with late postpartum females (postpartum day 22). However, 2 weeks of restraint stress during pregnancy increased depressive‐like behavior regardless of postpartum timepoint. In addition, dendritic length, branching and spine density on medium spiny neurons in the NA c shell were diminished in postpartum rats that experienced gestational stress although stress‐induced reductions in spine density were evident only in early/mid postpartum females. In the NA c core, structural plasticity was not affected by gestational stress but late postpartum females exhibited lower spine density and reduced dendritic length. Overall, these data not only demonstrate structural changes in the NA c across the postpartum period, they also show that postpartum depressive‐like behavior following exposure to gestational stress is associated with compromised structural plasticity in the NA c and thus may provide insight into the neural changes that could contribute to PPD.

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  • NAc MSN spine density, dendritic length, and branch points are decreased after stress hormone corticosterone or gestational stress.

    “NAc MSN spine density, dendritic length, and branch points are decreased after stress hormone corticosterone [149] or gestational stress [150].”

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  1. Paxinos G Watson C The rat brain in stereotaxic coordinates 1998 Academic Press San-Diego, CA.

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Authors
Haim, A., Sherer, M., & Leuner, B.
Affiliations
  • The Ohio State University Wexner Medical Center (US)
  • The Ohio State University (US)
Corresponding author
Leuner, Benedetta
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2014-10-31
Volume
40
Issue
12
Pages
3766-3773
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W2030155128
Cited by
76
References
89
Citations by year
2026: 3 · 2025: 5 · 2024: 4 · 2023: 6 · 2022: 3 · 2021: 5 · 2020: 8 · 2019: 8 · 2018: 7 · 2017: 8 · 2016: 12 · 2015: 6
FWCI
8.59
Type
journal article
Language
en
Open access
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Health (R0084148)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Maternal Mental Health During Pregnancy and Postpartum
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
postpartum depression, prenatal stress, restraint stress, nucleus accumbens, depression-like behavior, dendritic spine density, medium spiny neurons, structural plasticity, postpartum period, forced swim test, maternal mental health
MeSH terms
Animals, Dendrites, Disease Models, Animal, Female, Neuronal Plasticity, Nucleus Accumbens, Pregnancy, Pregnancy Complications, Random Allocation, Restraint, Physical, Stress, Psychological, Weight Gain, Rats, Sprague-Dawley, Depression, Postpartum

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