Cited by 331Sexual Differentiation and DisordersHormonal and reproductive studiesAdvanced Neuroimaging Techniques and Applications

Growth of white matter in the adolescent brain: role of testosterone and androgen receptor

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Perrin, Jennifer S., Hervé, Pierre-Yves, Leonard, Gabriel, Perron, Michel, Pike, G. Bruce, Pitiot, Alain, Richer, Louis, Veillette, Suzanne +2 more·2008·The Journal of Neuroscience

Abstract

The growth of white matter during human adolescence shows a striking sexual dimorphism; the volume of white matter increases with age slightly in girls and steeply in boys. Here, we provide evidence supporting the role of androgen receptor (AR) in mediating the effect of testosterone on white matter. In a large sample of typically developing adolescents ( n = 408, 204 males), we used magnetic resonance imaging and acquired T1-weighted and magnetization transfer ratio (MTR) images. We also measured plasma levels of testosterone and genotyped a functional polymorphism in the AR gene, namely the number of CAG repeats in exon 1 believed to be inversely proportional to the AR transcriptional activity. We found that the testosterone-related increase of white-matter volume was stronger in male adolescents with the lower versus higher number of CAG repeats in the AR gene, with testosterone explaining, respectively, 26 and 8% of variance in the volume. The MTR results suggest that this growth is not related to myelination; the MTR decreased with age in male adolescents. We speculate that testosterone affects axonal caliber rather than the thickness of the myelin sheath.

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Crossref · 10.1523/jneurosci.1212-08.2008

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Authors
Perrin, J. S., Hervé, P.-Y., Leonard, G., Perron, M., Pike, G. B., Pitiot, A., Richer, L., Veillette, S., Pausova, Z., & Paus, T.
Affiliations
  • University of Nottingham (GB)
  • Montreal Neurological Institute and Hospital (CA)
  • Cégep de Jonquière (CA)
Venue
The Journal of Neuroscience
Published
2008-09-17
Volume
28
Issue
38
Pages
9519-9524
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2026062838
Cited by
331
References
31
Citations by year
2026: 6 · 2025: 9 · 2024: 9 · 2023: 15 · 2022: 20 · 2021: 16 · 2020: 21 · 2019: 18 · 2018: 19 · 2017: 15 · 2016: 23 · 2015: 17 · 2014: 24 · 2013: 35 · 2012: 22
FWCI
8.49
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Constellation (Université du Québec à Chicoutimi) (submittedVersion)
Funders
  • Heart and Stroke Foundation of Canada
  • Heart And Stroke Foundation Of Quebec
  • Canadian Institutes of Health Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal and reproductive studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
adolescence, testosterone, androgen receptor, sexual dimorphism, CAG repeat polymorphism, magnetization transfer ratio, myelination, axonal caliber, brain development, sex differences
MeSH terms
Adolescent, Aging, Brain, Child, Female, Humans, Magnetic Resonance Imaging, Male, Myelin Sheath, Nerve Fibers, Myelinated, Neural Pathways, Polymorphism, Genetic, Receptors, Androgen, Sex Characteristics, Testosterone, Trinucleotide Repeats, Cell Size

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