Cited by 71Stress Responses and CortisolMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Stress-induced alterations in anxiety-like behavior and adaptations in plasticity in the bed nucleus of the stria terminalis

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Conrad, Kelly L., Louderback, Katherine M., Gessner, Caitlin P., Winder, Danny G.·2011·Physiology & Behavior

Abstract

In vulnerable individuals, exposure to stressors can result in chronic disorders such as generalized anxiety disorder (GAD), major depressive disorder (MDD), and post-traumatic stress disorder (PTSD). The extended amygdala is critically implicated in mediating acute and chronic stress responsivity and anxiety-like behaviors. The bed nucleus of the stria terminalis (BNST), a subregion of the extended amygdala, serves as a relay of corticolimbic information to the paraventricular nucleus of the hypothalamus (PVN) to directly influence the stress response. To investigate the influence of the corticosteroid milieu and housing conditions on BNST function, adult C57Bl/6J were either acutely or chronically administered corticosterone (CORT, 25mg/kg in sesame oil) or vehicle (sesame oil) or were group housed or socially isolated for 1 day (acute) or 6-8 weeks (chronic). To ascertain whether these stressors could influence anxiety-like behavior, studies were performed using the novel open-field (NOF) and the elevated zero maze (EZM) tests. To investigate potential associated changes in plasticity, alterations in BNST function were assessed using ex vivo extracellular field potential recordings in the (dorsal-lateral) dlBNST and a high frequency stimulus protocol to induce long-term potentiation (LTP). Our results suggest that chronic CORT injections and chronic social isolation housing conditions lead to an increase in anxiety-like behavior on the EZM and NOF. Chronically stressed mice also displayed a parallel blunting of LTP in the dlBNST. Conversely, acute social isolation housing had no effect on anxiety-like behavior but still resulted in a blunting of LTP in the dlBNST. Collectively, our results suggest acute and chronic stressors can have a distinct profile on plasticity in the BNST that is not uniformly associated with an increase in anxiety-like behavior.

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Authors
Conrad, K. L., Louderback, K. M., Gessner, C. P., & Winder, D. G.
Affiliations
Vanderbilt University (US)
Corresponding author
Conrad, Kelly L.
Venue
Physiology & Behavior
Publisher
Elsevier BV
Published
2011-08
Volume
104
Issue
2
Pages
248-256
ISSN
0031-9384 (ISSN-L)
OpenAlex
W2095622480
Cited by
71
References
60
Citations by year
2026: 2 · 2025: 6 · 2024: 6 · 2022: 5 · 2021: 7 · 2020: 5 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 6 · 2015: 2 · 2014: 7 · 2013: 9 · 2012: 7
FWCI
3.00
Type
journal article
Language
en
Open access
Locations
  • Physiology & Behavior (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Vanderbilt University
  • National Institutes of Health (AA019455)
  • National Institute on Alcohol Abuse and Alcoholism (R01AA019455, AA019455)
  • National Institute of Mental Health (MH065215-08, T32MH064913, MH064913, T32MH065215)
  • National Institute on Drug Abuse (DA019112, R01DA019112)
  • National Institute of Neurological Disorders and Stroke (T32NS007491, NS07491)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
bed nucleus of the stria terminalis, anxiety-like behavior, chronic stress, acute stress, corticosterone, social isolation, housing conditions, long-term potentiation, synaptic plasticity, extended amygdala, paraventricular nucleus, corticosteroids, generalized anxiety disorder, major depressive disorder, post-traumatic stress disorder
MeSH terms
Adaptation, Physiological, Analysis of Variance, Animals, Anxiety, Behavior, Animal, Biophysics, Corticosterone, Disease Models, Animal, Electric Stimulation, Exploratory Behavior, Male, Mice, Inbred C57BL, Septal Nuclei, Social Isolation, Time Factors, Long-Term Potentiation, Patch-Clamp Techniques, Maze Learning, Mice, In Vitro Techniques

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