A sex‐specific feedback projection from aromatase‐expressing neurons in the medial amygdala to the accessory olfactory bulb

2021 ◽  
Author(s):  
Tal Inbar ◽  
Rachel Davis ◽  
Joseph F. Bergan
Keyword(s):  
Olfactory Bulb ◽  
Medial Amygdala ◽  
Accessory Olfactory Bulb ◽  
Specific Feedback

Female puberty acceleration by male odour in mice: neural pathway and behavioural consequences

2014 ◽  
Vol 42 (4) ◽  
pp. 878-881 ◽  
Author(s):  
Mélanie Jouhanneau ◽  
Laura A. Szymanski ◽  
Matthieu Keller
Keyword(s):  
Olfactory Bulb ◽  
Vomeronasal Organ ◽  
Medial Amygdala ◽  
Accessory Olfactory Bulb ◽  
Vaginal Opening ◽  
Uterine Weight ◽  
Vomeronasal System ◽  
Neural Pathway ◽  
Early Puberty ◽  
Puberty Onset

In female mice, exposure to male chemosignals results in early puberty onset characterized by advanced vaginal opening and higher uterine weight. Evidence suggests that the male chemosignals responsible for acceleration of female puberty are androgen-dependent, but not all of the compounds that contribute to puberty acceleration have been identified. The male chemosignals are primarily detected and processed by the vomeronasal system including the vomeronasal organ, the accessory olfactory bulb and the medial amygdala. By contrast, the mechanism by which this olfactory information is integrated in the hypothalamus is poorly understood. In this context, the recent identification of the neuropeptide kisspeptin as a gatekeeper of puberty onset may provide a good candidate neuropeptide system for the transmission of chemosensory information to the gonadotrope axis.

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