Article ID Journal Published Year Pages File Type
2039134 Cell Reports 2016 10 Pages PDF
Abstract

•A group of neurons in the ventral premammillary nucleus express dopamine markers•These neurons are activated in male intruder, but not resident, mice•These neurons regulate same-sex social behavior in specific contexts•These neurons function via glutamate release, but do not release detectable dopamine

SummaryNearly all animals engage in a complex assortment of social behaviors that are essential for the survival of the species. In mammals, these behaviors are regulated by sub-nuclei within the hypothalamus, but the specific cell types within these nuclei responsible for coordinating behavior in distinct contexts are only beginning to be resolved. Here, we identify a population of neurons in the ventral premammillary nucleus of the hypothalamus (PMV) that are strongly activated in male intruder mice in response to a larger resident male but that are not responsive to females. Using a combination of molecular and genetic approaches, we demonstrate that these PMV neurons regulate intruder-specific male social behavior and social novelty recognition in a manner dependent on synaptic release of the excitatory neurotransmitter glutamate. These data provide direct evidence for a unique population of neurons that regulate social behaviors in specific contexts.

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Life Sciences Agricultural and Biological Sciences Agricultural and Biological Sciences (General)
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