Cited by 77Neuroendocrine regulation and behaviorSexual Differentiation and DisordersAnimal Behavior and Reproduction

Intraspecific variation in estrogen receptor alpha and the expression of male sociosexual behavior in two populations of prairie voles

Cushing, Bruce S, Razzoli, Maria, Murphy, Anne Z, Epperson, Pamela M, Le, Wei-Wei, Hoffman, Gloria E·2004·Brain Research

Abstract

Estrogen (E) regulates a variety of male sociosexual behaviors. We hypothesize that there is a relationship between the distribution of estrogen receptor alpha (ERalpha) and the degree of male social behavior. To test this hypothesis, ERalpha immunoreactivity (IR) was compared in prairie voles (Microtus ochrogaster) from Illinois (IL), which are highly social, and Kansas (KN), which are less social. The expression of androgen receptors (AR) in males also was compared between populations. The expression of ERalpha and AR were compared in brains from KN and IL males and females using immunocytochemistry (ICC). There were significant intrapopulational differences, with males expressing less ERalpha-IR than females in the medial preoptic area, ventromedial nucleus, ventrolateral portion of the hypothalamus, and bed nucleus of the stria terminalis (BST). IL males also displayed less ERalpha-IR in the medial amygdala (MeA) than IL females. While IL males expressed significantly less ERalpha-IR in the BST and MeA than KN males, there was no difference in AR-IR. Differences in the pattern of ERalpha-IR between KN and IL males were behaviorally relevant, as low levels of testosterone (T) were more effective in restoring sexual activity in castrated KN males than IL males. The lack of difference in AR combined with lower expression of ERalpha-IR in IL males suggests that behavioral differences in response to T are associated with aromatization of T to E and that reduced sensitivity to E may facilitate prosocial behavior in males.

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Crossref · 10.1016/j.brainres.2004.05.010

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  • Some population differences in prairie voles are associated with differences in estrogen receptor expression in the brain.

    “However, Kansas voles are more socially and genetically monogamous than voles in an Indiana population [63] and some of these population differences are associated with differences in estrogen receptor expression in the brain [64].”

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Authors
Cushing, B. S., Razzoli, M., Murphy, A. Z., Epperson, P. M., Le, W.-W., & Hoffman, G. E.
Affiliations
  • University of Illinois Chicago (US)
  • University of North Carolina at Chapel Hill (US)
  • Georgia State University (US)
  • University of Maryland, Baltimore (US)
Corresponding author
Cushing, Bruce S
Venue
Brain Research
Publisher
Elsevier BV
Published
2004-08
Volume
1016
Issue
2
Pages
247-254
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2045267898
Cited by
77
References
63
Citations by year
2026: 3 · 2025: 2 · 2024: 1 · 2023: 2 · 2022: 1 · 2021: 5 · 2020: 2 · 2019: 3 · 2018: 4 · 2017: 2 · 2016: 5 · 2015: 4 · 2014: 4 · 2013: 7 · 2012: 4
FWCI
4.64
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5k05mh001050-03)
  • Centers for Disease Control and Prevention (ND 11111)
  • National Institute of Mental Health (MH 01992, MH01050, K01MH001992)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (P01HD038490, HD38490)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
Keywords
estrogen receptor alpha, Microtus ochrogaster, androgen receptor, testosterone, aromatization, medial amygdala, bed nucleus of the stria terminalis, medial preoptic area, ventromedial hypothalamus, hypothalamus, intraspecific variation, prosocial behavior, sexual activity, population differences
MeSH terms
Animals, Behavior, Animal, Brain, Castration, Cell Count, Arvicolinae, Dose-Response Relationship, Drug, Female, Illinois, Immunohistochemistry, Kansas, Male, Receptors, Androgen, Receptors, Estrogen, Sexual Behavior, Animal, Sex Characteristics, Social Behavior, Species Specificity, Testosterone Propionate, Estrogen Receptor alpha

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