Cited by 305Sexual Differentiation and DisordersNeuroendocrine regulation and behaviorGenetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities

Hormonal influences on sexually differentiated behavior in nonhuman primates.

Wallen, Kim·2005·Frontiers in Neuroendocrinology

Abstract

Sexually dimorphic behavior in nonhuman primates results from behavioral predispositions organized by prenatal androgens. The rhesus monkey has been the primary primate model for understanding the hormonal organization of sexually dimorphic behavior. Historically, female fetuses have received high prenatal androgen doses to investigate the masculinizing and defeminizing effects of androgens. Such treatments masculinized juvenile and adult copulatory behavior and defeminized female-typical sexual initiation to adult estrogen treatment. Testosterone and the nonaromatizable androgen, 5alpha-dihydrotestosterone, produced similar effects suggesting that estrogenic metabolites of androgens are not critical for masculinization and defeminization in rhesus monkeys. Long duration androgen treatments masculinized both behavior and genitalia suggesting that socializing responses to the females' male-like appearance may have produced the behavioral changes. Treatments limited to 35 days early or late in gestation differentially affected behavioral and genital masculinization demonstrating direct organizing actions of prenatal androgens. Recent studies exposed fetal females to smaller doses of androgens and interfered with endogenous androgens using the anti-androgen flutamide. Low dose androgen treatment only significantly masculinized infant vocalizations and produced no behavioral defeminization. Females receiving late gestation flutamide showed masculinized infant vocalizations and de…

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Crossref · 10.1016/j.yfrne.2005.02.001

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Authors
Wallen, K.
Affiliations
Emory University (US)
Corresponding author
Wallen, Kim
Venue
Frontiers in Neuroendocrinology
Publisher
Elsevier BV
Published
2005-04
Volume
26
Issue
1
Pages
7-26
ISSN
0091-3022 (ISSN-L)
OpenAlex
W2150398782
Cited by
305
References
6
Citations by year
2026: 6 · 2025: 5 · 2024: 15 · 2023: 7 · 2022: 17 · 2021: 16 · 2020: 9 · 2019: 14 · 2018: 8 · 2017: 16 · 2016: 21 · 2015: 13 · 2014: 14 · 2013: 25 · 2012: 11
FWCI
4.77
Type
journal article
Language
en
Open access
closed
Locations
  • Frontiers in Neuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of Mental Health (R01MH050268, R01 MH 50268, K02MH001062, K02-MH 01062)
  • National Center for Research Resources (RR-00 165, P51 RR000165-440093, P51RR000165)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
Keywords
sexually dimorphic behavior, prenatal androgens, rhesus monkeys, masculinization, defeminization, testosterone, dihydrotestosterone, flutamide, androgen receptor antagonists, social experience, neuroendocrine feedback, mating behavior, infant vocalizations
MeSH terms
Androgen Antagonists, Androgens, Animals, Behavior, Animal, Female, Flutamide, Genitalia, Female, Hormones, Macaca mulatta, Male, Pregnancy, Prenatal Exposure Delayed Effects, Primates, Sexual Behavior, Animal, Sex Characteristics, Sex Differentiation, Vocalization, Animal

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