Fos induced by mating or noncontact sociosexual interaction is colocalized with androgen receptors in neurons within the forebrain, midbrain, and lumbosacral spinal cord of male rats

Hormones and Behavior
B GrécoA N Clancy

Abstract

This study was designed to determine the extent to which Fos immunoreactivity (induced either by mating or noncontact sociosexual interaction) and androgen receptor (AR) immunoreactivity are colocalized in brain and spinal cord of male rats. Some males (Mated) were allowed to mate to ejaculation; others (Social Controls) were placed with females but physical contact was prevented by a wire mesh screen; remaining males (Isolated) were placed alone in the test jar for the duration of the test period. After testing, brains and spinal cords were examined for AR and Fos immunoreactivity (ir). PG21 anti-AR and anti-c-fos primary antibodies were visualized by fluorescence microscopy using cyanine-conjugated and fluorescein-conjugated secondary antibodies. In both brain and spinal cord, the number of Fos-ir neurons varied according to group: Mated males > Social Controls > Isolated males. Fos was highly localized in subsets of AR-ir neurons within the medial preoptic nucleus, bed nucleus of the stria terminalis, dorsomedial nucleus of the amygdala, and central tegmental field. Fos was also localized in subsets of AR-ir neurons within the L5, L6, and S1 segments of the spinal cord. Spinal cord concentrations of AR-ir and Fos-ir neurons ...Continue Reading

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Citations

Feb 6, 2016·Current Opinion in Neurobiology·Koichi HashikawaDayu Lin
Aug 6, 2013·Frontiers in Neuroendocrinology·Aras Petrulis
Jul 2, 2008·Annals of the New York Academy of Sciences·Marisela Hernández-GonzálezAnders Agmo
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Dec 8, 2004·Hormones and Behavior·Erin L O'Bryant, Cynthia L Jordan
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