Cited by 85Bipolar Disorder and TreatmentCircadian rhythm and melatoninNeuroscience and Neuropharmacology Research

Lithium Ameliorates Nucleus Accumbens Phase-Signaling Dysfunction in a Genetic Mouse Model of Mania

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Dzirasa, Kafui, Coque, Laurent, Sidor, Michelle M., Kumar, Sunil, Dancy, Elizabeth A., Takahashi, Joseph S., McClung, Colleen A., Nicolelis, Miguel A. L.·2010·The Journal of Neuroscience

Abstract

Polymorphisms in circadian genes such as CLOCK convey risk for bipolar disorder. While studies have begun to elucidate the molecular mechanism whereby disruption of Clock alters cellular function within mesolimbic brain regions, little remains known about how these changes alter gross neural circuit function and generate mania-like behaviors in Clock-Δ19 mice. Here we show that the phasic entrainment of nucleus accumbens (NAC) low-gamma (30–55 Hz) oscillations to delta (1–4 Hz) oscillations is negatively correlated with the extent to which wild-type (WT) mice explore a novel environment.Clock-Δ19 mice, which display hyperactivity in the novel environment, exhibit profound deficits in low-gamma and NAC single-neuron phase coupling. We also demonstrate that NAC neurons in Clock-Δ19 mice display complex changes in dendritic morphology and reduced GluR1 expression compared to those observed in WT littermates. Chronic lithium treatment ameliorated several of these neurophysiological deficits and suppressed exploratory drive in the mutants. These results demonstrate that disruptions of Clock gene function are sufficient to promote alterations in NAC microcircuits, and raise the hypothesis that dysfunctional NAC phase signaling may contribute to the mania-like behavioral manifestations that result from diminished circadian gene function.

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Crossref · 10.1523/jneurosci.4289-10.2010

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  • Circadian genes in brain regions outside the SCN contribute locally to the control of neuronal metabolism, neurotransmitter synthesis and activity, and disruption of these functions might contribute to brain disorders.

    “circadian genes in other brain regions outside of this central pace-maker also contribute locally to the control of neuronal metabolism, neurotransmitter synthesis and activity, and the disruption of these functions might contribute to brain disorders264,304–315”

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Authors
Dzirasa, K., Coque, L., Sidor, M. M., Kumar, S., Dancy, E. A., Takahashi, J. S., McClung, C. A., & Nicolelis, M. A. L.
Affiliations
  • Duke University (US)
  • Howard Hughes Medical Institute (US)
Venue
The Journal of Neuroscience
Published
2010-12-01
Volume
30
Issue
48
Pages
16314-16323
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2018602168
Cited by
85
References
48
Citations by year
2026: 3 · 2025: 3 · 2024: 4 · 2023: 3 · 2022: 7 · 2021: 6 · 2020: 3 · 2019: 3 · 2018: 4 · 2017: 10 · 2016: 6 · 2015: 7 · 2014: 6 · 2013: 5 · 2012: 7
FWCI
4.37
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Alliance for Research on Schizophrenia and Depression
  • National Institutes of Health
  • National Institute of Mental Health (P50MH060451)
  • National Institute on Drug Abuse (R01DA023988)
  • National Institute of Neurological Disorders and Stroke (R33NS049534)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
lithium, nucleus accumbens, phase coupling, low gamma oscillations, delta oscillations, clock genes, mania, bipolar disorder, circadian genes, dendritic morphology, GluR1, novel environment exploration, hyperactivity
MeSH terms
Animals, Biological Clocks, Bipolar Disorder, Circadian Rhythm, Disease Models, Animal, Lithium, Male, Mice, Inbred BALB C, Mice, Inbred C57BL, Mice, Transgenic, Nerve Net, Nucleus Accumbens, Signal Transduction, Mice, CLOCK Proteins

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