Mitochondrial function in the brain links anxiety with social subordination
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Significance: Within a dominance hierarchy, low social status strongly reduces individual well-being. In socially living species, rank in a hierarchy is determined through competitive encounters. Despite the numerous health consequences, the ability of personality traits to predispose individuals to a particular social rank remains largely unclear. Our work identifies trait anxiety as a predisposing factor to a subordinate rank. We demonstrate that mitochondrial function in the nucleus accumbens, a brain region relevant for motivation and depression, is a critical mediating factor in the subordinate status displayed by high-anxious rats. These findings highlight a role for cerebral energy metabolism in social behavior and point to mitochondrial function in the nucleus accumbens as a potential marker and avenue of treatment for mood disorders.
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Previous work showed that differences in mitochondrial function in the amygdala do not seem to be relevant for fast fear conditioning associations.
“Although very little is known regarding the implication of differences in mitochondrial function in the amygdala for social behaviors, previous work showed that it does not seem to be relevant for fast fear conditioning associations32.”
Mitochondria function and energy metabolism in the NAc is implicated in social competition and vulnerability to social defeat.
“Mitochondria function and energy metabolism in the NAc was also recently implicated in social competition32,33 and vulnerability to social defeat57.”
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Self-citation
- Authors
- Hollis, F., van der Kooij, M. A., Zanoletti, O., Lozano, L., Cantó, C., & Sandi, C.
- Affiliations
- École Polytechnique Fédérale de Lausanne (CH)
- Brain Mind Institute, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland;
- Nestlé Institute of Health Sciences SA, CH-1015 Lausanne, Switzerland
- Corresponding author
- Sandi, Carmen
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 2015-11-30
- Volume
- 112
- Issue
- 50
- Pages
- 15486-15491
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC4687564
- OpenAlex
- W2182045965
- Cited by
- 288
- References
- 14
- Citations by year
- 2026: 23 · 2025: 38 · 2024: 32 · 2023: 32 · 2022: 31 · 2021: 21 · 2020: 25 · 2019: 33 · 2018: 31 · 2017: 13 · 2016: 9
- FWCI
- 8.24
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
- Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
- Funders
- Swiss National Science Foundation (31003A-152614)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
- Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
- Keywords
- trait anxiety, social dominance, dominance hierarchy, mitochondrial function, nucleus accumbens, mitochondrial complex I, succinate dehydrogenase, brain energy metabolism, reactive oxygen species, nicotinamide, social subordination, social behavior, rats
- MeSH terms
- Animals, Anxiety, Brain, Dominance-Subordination, Male, Mitochondria, Niacinamide, Nucleus Accumbens, Social Behavior, Rats, Wistar, Electron Transport Chain Complex Proteins
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