Cited by 79Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchNeuroendocrine regulation and behavior

From anxiety to autism: spectrum of abnormal social behaviors modeled by progressive disruption of inhibitory neuronal function in the basolateral amygdala in Wistar rats

Truitt, William A., Sajdyk, Tammy J., Dietrich, Amy D., Oberlin, Brandon, McDougle, Christopher J., Shekhar, Anantha·2007·Psychopharmacology

Abstract

Rationale Social behaviors are disrupted in several psychiatric disorders. The amygdala is a key brain region involved in social behaviors, and amygdala pathology has been implicated in disease states ranging from social anxiety disorder to autism.Objective To test the effects of progressive disruption of the inhibitory function within the basolateral nucleus of the amygdala (BLA) on conspecific social interaction in rats and investigate functional networks from the ventral medial prefrontal cortex (mPFCv) to the BLA.Materials and methods BLA inhibitory tone was disrupted by priming it with the stress-peptide corticotrophin releasing factor (CRF) receptor agonist urocortin 1 (Ucn 1, 6 fmol), or by selective lesioning of a subset of BLA-GABAergic interneurons containing neurokinin 1 receptors using the targeted toxin SSP-Saporin. The effects of the disruption of GABAergic tone in the BLA were examined using a repeated exposure and habituation paradigm of social interaction (SI/h). Lesions and selectivity of lesions were confirmed postmortem. Additionally, effects of stimulating mPFCv on cFos activity in interneurons of the BLA were examined.Results Rats primed with Ucn 1 showed persistent social inhibition, which could be overcome with habituation, putatively modeling social anxiety. Rats with a selective lesioning of a subset of GABAergic interneurons in the BLA exhibited persistent social inhibition that was not reversed by SI/h paradigm. We also demonstrate selective functional inputs to this subset of interneurons when mPFCv was activated.Conclusions These models with different gradations of disrupted BLA inhibition could help to study social dysfunction in disorders ranging from social anxiety to autism spectrum disorders.

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Crossref · 10.1007/s00213-006-0674-y

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Authors
Truitt, W. A., Sajdyk, T. J., Dietrich, A. D., Oberlin, B., McDougle, C. J., & Shekhar, A.
Affiliations
Indiana University School of Medicine (US)
Corresponding author
Shekhar, Anantha
Venue
Psychopharmacology
Published
2007-02-03
Volume
191
Issue
1
Pages
107-118
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W2054166255
Cited by
79
References
88
Citations by year
2026: 1 · 2025: 6 · 2024: 2 · 2023: 3 · 2022: 7 · 2021: 6 · 2020: 2 · 2019: 4 · 2018: 4 · 2017: 4 · 2016: 1 · 2015: 5 · 2014: 6 · 2013: 7 · 2012: 4
FWCI
1.67
Type
journal article
Language
en
Open access
closed
Locations
  • Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (R01-MH52619, R01-MH65702, R01MH052619, R01MH065702)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
basolateral amygdala, GABAergic interneurons, inhibitory tone, social anxiety, autism spectrum disorder, social interaction, urocortin 1, corticotropin-releasing factor, neurokinin-1 receptor, ventromedial prefrontal cortex, c-fos, social inhibition, habituation, animal models of psychiatric disorders
MeSH terms
Saporins, Amygdala, Animals, Anxiety, Autistic Disorder, Behavior, Animal, Corticotropin-Releasing Hormone, Disease Models, Animal, Habituation, Psychophysiologic, Interneurons, Male, Neural Inhibition, Neural Pathways, Recombinant Fusion Proteins, Social Behavior, Social Behavior Disorders, Time Factors, Rats, Wistar, Prefrontal Cortex, Receptors, Corticotropin-Releasing Hormone, Receptors, Neurokinin-1, Rats, Ribosome Inactivating Proteins, Type 1, Urocortins

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