Sex difference in dendritic development of the sexually dimorphic nucleus of the preoptic area in the rat

Ronald P. Hammer; Carol D. Jacobson

doi:10.1016/0736-5748(84)90062-5

Sex difference in dendritic development of the sexually dimorphic nucleus of the preoptic area in the rat

Ronald P. Hammer, Carol D. Jacobson

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

Sex differences in the growth and dendritic development of neurons in the sexually dimorphic nucleus of the preoptic area were examined with quantitative Golgi techniques during early postnatal life in rats. Neuronal size and dendritic extent were found to increase more in males than in females during the first 10 postnatal days, while the numbers of primary and terminal dendrites were similar in the two sexes. The onset of greater dendritic growth in males occurs just after the volume of the nucleus begins to exhibit sexual dimorphism, between 24 and 26 days after fertilization. Growth of dendrites in this region may be related to the presence of sex hormones during the critical period of sexual brain differentiation.

Original language	English (US)
Pages (from-to)	77-81,83-85
Journal	International Journal of Developmental Neuroscience
Volume	2
Issue number	1
DOIs	https://doi.org/10.1016/0736-5748(84)90062-5
State	Published - 1984
Externally published	Yes

Keywords

Critical period
Dendritic development
Sexual differentiation
Sexual dimorphism
Sexually dimorphic nucleus of the preoptic area

ASJC Scopus subject areas

Developmental Neuroscience
Developmental Biology

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10.1016/0736-5748(84)90062-5

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title = "Sex difference in dendritic development of the sexually dimorphic nucleus of the preoptic area in the rat",

abstract = "Sex differences in the growth and dendritic development of neurons in the sexually dimorphic nucleus of the preoptic area were examined with quantitative Golgi techniques during early postnatal life in rats. Neuronal size and dendritic extent were found to increase more in males than in females during the first 10 postnatal days, while the numbers of primary and terminal dendrites were similar in the two sexes. The onset of greater dendritic growth in males occurs just after the volume of the nucleus begins to exhibit sexual dimorphism, between 24 and 26 days after fertilization. Growth of dendrites in this region may be related to the presence of sex hormones during the critical period of sexual brain differentiation.",

keywords = "Critical period, Dendritic development, Sexual differentiation, Sexual dimorphism, Sexually dimorphic nucleus of the preoptic area",

author = "Hammer, {Ronald P.} and Jacobson, {Carol D.}",

note = "Funding Information: * This work was supported in part by NIH Grants RR07034 and HD16148 and aided by Basil O{\textquoteright}Connor Grant No. 5-367 from the March of Dimes Birth Defects Foundation (CDJ). t Author to whom correspondence should be addressed.",

year = "1984",

doi = "10.1016/0736-5748(84)90062-5",

language = "English (US)",

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pages = "77--81,83--85",

journal = "International Journal of Developmental Neuroscience",

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T1 - Sex difference in dendritic development of the sexually dimorphic nucleus of the preoptic area in the rat

AU - Hammer, Ronald P.

AU - Jacobson, Carol D.

N1 - Funding Information: * This work was supported in part by NIH Grants RR07034 and HD16148 and aided by Basil O’Connor Grant No. 5-367 from the March of Dimes Birth Defects Foundation (CDJ). t Author to whom correspondence should be addressed.

PY - 1984

Y1 - 1984

N2 - Sex differences in the growth and dendritic development of neurons in the sexually dimorphic nucleus of the preoptic area were examined with quantitative Golgi techniques during early postnatal life in rats. Neuronal size and dendritic extent were found to increase more in males than in females during the first 10 postnatal days, while the numbers of primary and terminal dendrites were similar in the two sexes. The onset of greater dendritic growth in males occurs just after the volume of the nucleus begins to exhibit sexual dimorphism, between 24 and 26 days after fertilization. Growth of dendrites in this region may be related to the presence of sex hormones during the critical period of sexual brain differentiation.

AB - Sex differences in the growth and dendritic development of neurons in the sexually dimorphic nucleus of the preoptic area were examined with quantitative Golgi techniques during early postnatal life in rats. Neuronal size and dendritic extent were found to increase more in males than in females during the first 10 postnatal days, while the numbers of primary and terminal dendrites were similar in the two sexes. The onset of greater dendritic growth in males occurs just after the volume of the nucleus begins to exhibit sexual dimorphism, between 24 and 26 days after fertilization. Growth of dendrites in this region may be related to the presence of sex hormones during the critical period of sexual brain differentiation.

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KW - Sexual differentiation

KW - Sexual dimorphism

KW - Sexually dimorphic nucleus of the preoptic area

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Sex difference in dendritic development of the sexually dimorphic nucleus of the preoptic area in the rat

Abstract

Keywords

ASJC Scopus subject areas

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