Cited by 49Neurotransmitter Receptor Influence on BehaviorStress Responses and CortisolNeuroendocrine regulation and behavior

Effects of social defeat on dopamine neurons in the ventral tegmental area in male and female California mice

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Greenberg, Gian D., Steinman, Michael Q., Doig, Ian E., Hao, Rebecca, Trainor, Brian C.·2015·European Journal of Neuroscience

Abstract

Dopamine neurons in the ventral tegmental area (VTA) have important functions related to rewards but are also activated in aversive contexts. Electrophysiology studies suggest that the degree to which VTA dopamine neurons respond to noxious stimuli is topographically organized across the dorsal-ventral extent. We used c-fos immunohistochemistry to examine the responses of VTA dopamine neurons in contexts of social defeat and social approach. Studying monogamous California mice (Peromyscus californicus) allowed us to observe the effects of social defeat on both males and females. Females exposed to three episodes of defeat, but not a single episode, had more tyrosine hydroxylase (TH)/c-fos-positive cells in the ventral (but not dorsal) VTA compared with controls. This observation suggests that repeated exposure to aversive contexts is necessary to trigger activation of VTA dopamine neurons. Defeat did not affect TH/c-fos colocalizations in males. We also examined the long-term effects of defeat on c-fos expression in a social interaction test. As previously reported, defeat reduced social interaction in females but not males. Surprisingly, there were no effects of defeat stress on TH/c-fos colocalizations in any subregion of the VTA. However, females had more TH/c-fos-positive cells than males across the entire VTA, and also had greater c-fos-positive cell counts in posterior subregions of the nucleus accumbens shell. Our results show that dopamine neurons in the VTA are more responsive to social contexts in females and that the ventral VTA in particular is sensitive to aversive contexts.

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  1. Brischoux F Chakraborty S Brierley DI Ungless MA 2009 Phasic excitation of dopamine neurons in ventral VTA by noxious stimuli Proc Natl Acad Sci U S A 106 4894 4899 19261850 PMC2660746
  2. Campi KL Jameson CE Trainor BC 2013 Sexual dimorphism in the brain of the monogamous California mouse (Peromyscus californicus) Brain, behavior and evolution 81 236 249 PMC3915401 23881046
  3. Carlezon WAJ Haile CN Coppersmith R Hayashi Y Malinow R Neve RL Nestler EJ 2000 Distinct sites of opiate reward and aversion within the midbrain identified using a herpes simplex virus vector expressing GluR1 J Neurosci 20 RC62 1 5 10684909 PMC6772915
  4. Ikemoto S 2007 Dopamine reward circuitry: Two projection systems from the ventral midbrain to the nucleus accumbens–olfactory tubercle complex Brain Research Reviews 56 27 78 17574681 PMC2134972
  5. Trainor BC Pride MC Villalon Landeros R Knoblauch NW Takahashi EY Silva AL Crean KK 2011 Sex differences in social interaction behavior following social defeat stress in the monogamous California mouse (Peromyscus californicus) PLOS One 6 e17405 21364768 PMC3045459

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Authors
Greenberg, G. D., Steinman, M. Q., Doig, I. E., Hao, R., & Trainor, B. C.
Affiliations
University of California, Davis (US)
Corresponding author
Trainor, Brian C.
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2015-11-22
Volume
42
Issue
12
Pages
3081-3094
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W1922108528
Cited by
49
References
85
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 6 · 2022: 3 · 2021: 8 · 2020: 2 · 2019: 3 · 2018: 7 · 2017: 6 · 2016: 6
FWCI
2.94
Type
journal article
Language
en
Open access
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • Scholar Commons (Santa Clara University) (submittedVersion)
Funders
National Institutes of Health (T32 MH 82174‐3, F31 MH095253, R01 MH097714 01A1)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
social defeat, ventral tegmental area, dopaminergic neurons, California mouse, Peromyscus californicus, sex differences, c-fos, tyrosine hydroxylase, nucleus accumbens shell, social approach, social interaction, repeated stress
MeSH terms
Animals, Cell Count, Dominance-Subordination, Female, Image Processing, Computer-Assisted, Immunohistochemistry, Male, Motor Activity, Neurons, Peromyscus, Photomicrography, Psychological Tests, Sex Characteristics, Stress, Psychological, Tyrosine 3-Monooxygenase, Proto-Oncogene Proteins c-fos, Ventral Tegmental Area

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