Cited by 37Neurogenesis and neuroplasticity mechanismsStress Responses and CortisolNeuroendocrine regulation and behavior

Social regulation of adult neurogenesis in a eusocial mammal

Peragine, D.E., Simpson, J.A., Mooney, S.J., Lovern, M.B., Holmes, M.M.·2014·Neuroscience

Abstract

The present study examined the effects of social status on adult neurogenesis in an extreme cooperative breeder: the naked mole rat. These animals live in large colonies of up to 300 individuals, with a strict reproductive dominance hierarchy; one female and one to three males breed, and all other members are socially subordinate and reproductively suppressed. We examined the effects of social and gonadal cues on doublecortin (DCX; a marker for immature neurons) immunoreactivity in the dentate gyrus (DG), piriform cortex (PCx) and basolateral amygdala (BLA) by comparing dominant breeding animals to non-breeding subordinates from intact colonies. We also examined DCX expression in subordinate animals that had been removed from their colony and paired with an opposite- or same-sex conspecific for 6months. Compared to subordinates, dominant breeders had significantly reduced DCX immunoreactivity in all brain areas, with BLA effects confined to females. By contrast, the effects of same- versus opposite-sex housing were region-specific. In the DG and PCx, more DCX immunoreactivity was observed for opposite- than same-sex-paired subordinates. Conversely, same-sex-paired females had more DCX immunoreactivity than opposite-sex-paired females in the BLA. Gonadectomy did not affect DCX expression in opposite-sex-paired animals, and no significant relationships between gonadal steroids and DCX immunoreactivity were detected, suggesting that group differences in neurogenesis are independ…

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Crossref · 10.1016/j.neuroscience.2014.02.044

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Authors
Peragine, D. E., Simpson, J. A., Mooney, S. J., Lovern, M. B., & Holmes, M. M.
Affiliations
  • University of Toronto (CA)
  • Oklahoma State University (US)
Corresponding author
Peragine, D.E.
Venue
Neuroscience
Publisher
Elsevier BV
Published
2014-05
Volume
268
Pages
10-20
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2031374101
Cited by
37
References
148
Citations by year
2025: 1 · 2024: 2 · 2023: 1 · 2022: 4 · 2021: 7 · 2020: 2 · 2019: 3 · 2018: 1 · 2017: 4 · 2016: 6 · 2015: 4 · 2014: 2
FWCI
1.85
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Library and Archives Canada (Government of Canada) (submittedVersion)
  • TSpace (University of Toronto) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
Keywords
adult neurogenesis, social status, naked mole-rat, social subordination, doublecortin, gonadal hormones, gonadectomy, dentate gyrus, piriform cortex, basolateral amygdala
MeSH terms
Doublecortin Domain Proteins, Doublecortin Protein, Animals, Castration, Cell Count, Female, Hormones, Housing, Animal, Male, Microtubule-Associated Proteins, Neuropeptides, Photomicrography, Radioimmunoassay, Sexual Behavior, Animal, Sex Characteristics, Social Behavior, Social Dominance, Linear Models, Dentate Gyrus, Mole Rats, Neurogenesis, Piriform Cortex, Basolateral Nuclear Complex

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