Substance P in the medial amygdala regulates aggressive behaviors in male mice

Behavioral and clinical studies have revealed a critical role of substance P (SP) in aggression; however, the neural circuit mechanisms underlying SP and aggression remain elusive. Here, we show that tachykinin-expressing neurons in the medial amygdala (MeA neurons) are activated during aggressive b...

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Veröffentlicht in:Neuropsychopharmacology (New York, N.Y.) N.Y.), 2024-10, Vol.49 (11), p.1689-1699
Hauptverfasser: He, Zi-Xuan, Yue, Mei-Hui, Liu, Kai-Jie, Wang, Yao, Qiao, Jiu-Ye, Lv, Xin-Yue, Xi, Ke, Zhang, Ya-Xin, Fan, Jia-Ni, Yu, Hua-Li, He, Xiao-Xiao, Zhu, Xiao-Juan
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container_issue 11
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container_title Neuropsychopharmacology (New York, N.Y.)
container_volume 49
creator He, Zi-Xuan
Yue, Mei-Hui
Liu, Kai-Jie
Wang, Yao
Qiao, Jiu-Ye
Lv, Xin-Yue
Xi, Ke
Zhang, Ya-Xin
Fan, Jia-Ni
Yu, Hua-Li
He, Xiao-Xiao
Zhu, Xiao-Juan
description Behavioral and clinical studies have revealed a critical role of substance P (SP) in aggression; however, the neural circuit mechanisms underlying SP and aggression remain elusive. Here, we show that tachykinin-expressing neurons in the medial amygdala (MeA neurons) are activated during aggressive behaviors in male mice. We identified MeA neurons as a key mediator of aggression and found that MeA →ventrolateral part of the ventromedial hypothalamic nucleus (VMHvl) projections are critical to the regulation of aggression. Moreover, SP/neurokinin-1 receptor (NK-1R) signaling in the VMHvl modulates aggressive behaviors in male mice. SP/NK-1R signaling regulates aggression by influencing glutamate transmission in neurons in the VMHvl. In summary, these findings place SP as a key node in aggression circuits.
doi_str_mv 10.1038/s41386-024-01863-w
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source MEDLINE; SpringerNature Journals
subjects Aggression - physiology
Animals
Corticomedial Nuclear Complex - drug effects
Corticomedial Nuclear Complex - metabolism
Corticomedial Nuclear Complex - physiology
Glutamic Acid - metabolism
Male
Mice
Mice, Inbred C57BL
Neural Pathways - physiology
Neurons - metabolism
Neurons - physiology
Receptors, Neurokinin-1 - metabolism
Substance P - metabolism
Tachykinins - metabolism
Ventromedial Hypothalamic Nucleus - drug effects
Ventromedial Hypothalamic Nucleus - metabolism
Ventromedial Hypothalamic Nucleus - physiology
title Substance P in the medial amygdala regulates aggressive behaviors in male mice
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