Cited by 89Neuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on BehaviorTreatment of Major Depression

Molecular basis of dendritic atrophy and activity in stress susceptibility

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Francis, T C, Chandra, R, Gaynor, A, Konkalmatt, P, Metzbower, S R, Evans, B, Engeln, M, Blanpied, T A +1 more·2017·Molecular Psychiatry

Abstract

Molecular and cellular adaptations in nucleus accumbens (NAc) medium spiny neurons (MSNs) underlie stress-induced depression-like behavior, but the molecular substrates mediating cellular plasticity and activity in MSN subtypes in stress susceptibility are poorly understood. We find the transcription factor early growth response 3 (EGR3) is increased in D1 receptor containing MSNs of mice susceptible to social defeat stress. Genetic reduction of Egr3 levels in D1-MSNs prevented depression-like outcomes in stress susceptible mice by preventing D1-MSN dendritic atrophy, reduced frequency of excitatory input and altered in vivo activity. Overall, we identify NAc neuronal-subtype molecular control of dendritic morphology and related functional adaptations, which underlie susceptibility to stress.

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Authors
Francis, T. C., Chandra, R., Gaynor, A., Konkalmatt, P., Metzbower, S. R., Evans, B., Engeln, M., Blanpied, T. A., & Lobo, M. K.
Affiliations
  • University of Maryland, Baltimore (US)
  • George Washington University (US)
Corresponding author
Lobo, M K
Venue
Molecular Psychiatry
Published
2017-09-12
Volume
22
Issue
11
Pages
1512-1519
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W2755167598
Cited by
89
References
50
Citations by year
2026: 8 · 2025: 4 · 2024: 8 · 2023: 5 · 2022: 13 · 2021: 9 · 2020: 20 · 2019: 11 · 2018: 10 · 2017: 1
FWCI
5.62
Type
journal article
Language
en
Open access
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • One Mind
  • National Institute of Mental Health (R01MH106500)
  • National Institute on Drug Abuse (R01DA038613)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
dendritic atrophy, nucleus accumbens, medium spiny neurons, dopamine D1 receptor, EGR3, social defeat stress, stress vulnerability, depression-like behavior, neuroplasticity, dendritic morphology, neuronal activity, excitatory synaptic input
MeSH terms
Animals, Atrophy, Dendrites, Depression, Depressive Disorder, Disease Susceptibility, Male, Mice, Inbred C57BL, Neuronal Plasticity, Neurons, Nucleus Accumbens, Stress, Psychological, Receptors, Dopamine D1, Receptors, Dopamine D2, Mice, Early Growth Response Protein 3

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