PMID: 3748448Jul 24, 1986Paper

Development of sexual dimorphism in synaptic organization in the ventromedial nucleus of the hypothalamus in rats

Neuroscience Letters
A Matsumoto, Y Arai

Abstract

The ventromedial nuclei of the hypothalamus (VMN) were examined ultrastructurally in both male and female rats at 5, 20, 45 and 100 days of age. Synaptic number in the VMN was increased to 70-80% of that at 45 days of age during the first 20 days. At 5 days of age, sexual difference in the numerical density of dendritic shaft and spine synapses was not detected. Synaptic sexual difference developed by 20 days of age in the ventrolateral VMN where receptors for sex steroid were abundant. This tendency persisted until adulthood. However, no sexual difference in synaptic pattern was recognized in the dorsomedial VMN. From these results, it is suggested that sexual dimorphism in synaptic organization in the VMN develops from the early prepubertal period.

References

Aug 1, 1974·The American Journal of Anatomy·P J SheridanW E Stumpf
Mar 20, 1981·Science·N J MacLusky, F Naftolin
Jun 1, 1983·Endocrinologia Japonica·A Matsumoto, Y Arai

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Citations

Dec 1, 1992·Neurochemical Research·A CestelliI Di Liegro
Aug 19, 1991·Brain Research. Developmental Brain Research·L D Pozzo Miller, A Aoki
Mar 1, 1995·Progress in Neurobiology·M D Madeira, A R Lieberman
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Apr 4, 2008·Journal of Neurochemistry·Jaclyn M Schwarz, Margaret M McCarthy
Jan 25, 2006·Brain Research·Lisa E LauerAndrew S Kane
Feb 20, 2009·Journal of Neuroendocrinology·H MoriM Kawata
Sep 13, 2011·Experimental Neurology·Tomaz BüdefeldGregor Majdic
Oct 19, 2010·Frontiers in Neuroendocrinology·Tuck C NgunEric Vilain
Feb 18, 2005·The Journal of Comparative Neurology·Susana I Sá, M Dulce Madeira
Jun 23, 2016·Journal of Neuroendocrinology·L M RudolphP E Micevych
Feb 17, 2000·Current Opinion in Neurology·S A LaessigE K Silbergeld
Jul 1, 1990·Journal of Neurobiology·C L JordanA P Arnold
Apr 26, 2021·Hormones and Behavior·Ha Na Choe, Erich D Jarvis
Oct 1, 1991·Trends in Neurosciences·I Reisert, C Pilgrim

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