Cited by 402Neurotransmitter Receptor Influence on BehaviorTreatment of Major DepressionStress Responses and Cortisol

Mesolimbic dopamine neurons in the brain reward circuit mediate susceptibility to social defeat and antidepressant action

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Cao, Jun-Li, Covington, Herbert E., Friedman, Allyson K., Wilkinson, Matthew B., Walsh, Jessica J., Cooper, Donald C., Nestler, Eric J., Han, Ming-Hu·2010·The Journal of Neuroscience

Abstract

We previously reported that the activity of mesolimbic dopamine neurons of the ventral tegmental area (VTA) is a key determinant of behavioral susceptibility vs resilience to chronic social defeat stress. However, this was based solely on ex vivo measurements, and the in vivo firing properties of VTA dopamine neurons in susceptible and resilient mice, as well as the effects of antidepressant treatments, remain completely unknown. Here, we show that chronic (10 d) social defeat stress significantly increased the in vivo spontaneous firing rates and bursting events in susceptible mice but not in the resilient subgroup. Both the firing rates and bursting events were significantly negatively correlated with social avoidance behavior, a key behavioral abnormality induced by chronic social defeat stress. Moreover, the increased firing rates, bursting events, and avoidance behavior in susceptible mice were completely reversed by chronic (2 week), but not acute (single dose), treatments with the antidepressant medication fluoxetine (20 mg/kg). Chronic social defeat stress increased hyperpolarization-activated cation current (I h) in VTA dopamine neurons, an effect that was also normalized by chronic treatment with fluoxetine. As well, local infusion of I h inhibitors ZD7288 (0.1 μg) or DK-AH 269 (0.6 μg) into the VTA exerted antidepressant-like behavioral effects. Together, these data suggest that the firing patterns of mesolimbic dopamine neurons in vivo mediate an individual's responses to chronic stress and antidepressant action.

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Crossref · 10.1523/jneurosci.3177-10.2010

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  • The effect of chronic stress on ventral tegmental area dopamine neuron firing is lasting.

    “The effect of chronic stress on VTA DA neuron firing is lasting (37, 65, 66), is driven by activity of intrinsic potassium channels (54), and phasic but not tonic optogenetic stimulation of VTA-NAc projecting neurons promotes susceptibility to CSDS (54, 66–68).”
  • Antagonism of the BDNF receptor TrkB prevents stress susceptibility.

    “Rather, BDNF was responsible for stress susceptibility and antagonism of the BDNF receptor TrkB, prevented susceptibility (37, 38, 54, 65, 67, 68).”
  • BDNF is responsible for stress susceptibility.

    “Rather, BDNF was responsible for stress susceptibility and antagonism of the BDNF receptor TrkB, prevented susceptibility (37, 38, 54, 65, 67, 68).”
  • Ih current is similarly increased in ventral tegmental area neurons of resilient mice.

    “Surprisingly, this current is similarly increased in VTA neurons of resilient mice”

    From Neurobiology of resilience (2012) · cites this paper as [73]

  • Hyper-excitability of ventral tegmental area dopamine neurons in susceptible mice is mediated in part by induction of hyperpolarization-activated cation current (Ih), which increases intrinsic excitability.

    “the hyper–excitability of VTA dopamine neurons in susceptible mice is mediated in part by induction of hyperpolarization–activated cation current (Ih), which increases the intrinsic excitability of these neurons73”

    From Neurobiology of resilience (2012) · cites this paper as [73]

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Authors
Cao, J.-L., Covington, H. E., Friedman, A. K., Wilkinson, M. B., Walsh, J. J., Cooper, D. C., Nestler, E. J., & Han, M.-H.
Affiliations
  • The University of Texas Southwestern Medical Center (US)
  • Icahn School of Medicine at Mount Sinai (US)
Corresponding author
Han, Ming-Hu
Venue
The Journal of Neuroscience
Published
2010-12-08
Volume
30
Issue
49
Pages
16453-16458
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2014095642
Cited by
402
References
27
Citations by year
2026: 13 · 2025: 26 · 2024: 24 · 2023: 28 · 2022: 33 · 2021: 35 · 2020: 15 · 2019: 42 · 2018: 28 · 2017: 30 · 2016: 22 · 2015: 23 · 2014: 25 · 2013: 19 · 2012: 24
FWCI
7.49
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Alliance for Research on Schizophrenia and Depression
  • National Institute of Mental Health (R01MH092306, R01MH051399)
  • National Institute on Drug Abuse (K01DA017750)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
mesolimbic dopamine neurons, ventral tegmental area, chronic social defeat stress, social avoidance, resilience, antidepressant action, fluoxetine, spontaneous firing rate, burst firing, hyperpolarization-activated current, ZD7288, brain reward circuits
MeSH terms
Action Potentials, Analysis of Variance, Animals, Benzazepines, Brain, Cardiotonic Agents, Chronic Disease, Disease Models, Animal, Disease Susceptibility, Dopamine, Electric Stimulation, Fluoxetine, Male, Mice, Inbred C57BL, Neural Pathways, Neurons, Pyrimidines, Reward, Stress, Psychological, Ventral Tegmental Area, Patch-Clamp Techniques, Antidepressive Agents, Second-Generation, Mice

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