Literature DB >> 19160494

Pubertal hormones modulate the addition of new cells to sexually dimorphic brain regions.

Eman I Ahmed1, Julia L Zehr, Kalynn M Schulz, Betty H Lorenz, Lydia L DonCarlos, Cheryl L Sisk.   

Abstract

New cells, including neurons, arise in several brain regions during puberty in rats. Sex differences in pubertal addition of cells coincide with adult sexual dimorphisms: for each region, the sex that gains more cells during puberty has a larger volume in adulthood. Removing gonadal hormones before puberty eliminates these sex differences, indicating that gonadal steroids direct the addition of new cells during puberty to maintain and accentuate sexual dimorphisms in the adult brain.

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Year:  2008        PMID： 19160494      PMCID： PMC2772186          DOI： 10.1038/nn.2178

Source DB:  PubMed          Journal:  Nat Neurosci        ISSN： 1097-6256            Impact factor:   24.884


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