hrp0084fc-lb-2 | Late Breaking Abstracts | ESPE2015

Loss of Neuronal Dmxl2 Impairs the Maturation and the Activation of GnRH Neurons: a New Mechanism of GnRH Deficiency

Harbulot Carole , Tata Brooke , Jacquier Sandrine , De Roux Nicolas

Background: DMXL2 haploinsufficiency in humans was recently shown to cause the polyendocrine-polyneuropathia syndrome including a GnRH deficiency (OMIM #616113). The neuronal deletion of Dmxl2 in mice (Nes::Cre;Dmxl2loxp/wt) caused infertility and gonadotropic deficiency (Plos Biology 9 e1001952, 2014). Dmxl2 encodes rabconnectin-3α (rbcn-3α), which participates in the control of the V-ATPase activity an...

hrp0086fc12.1 | Neuroendocrinology | ESPE2016

Rabconnectin3-α is Indispensable for the Activation and Maturation of the GnRH Neuronal Network

Tata Brooke , Harbulot Carole , Csaba Zsolt , Jacquier Sandrine , de Roux Nicolas

Background: Acquisition and maintenance of fertility in mammals rely on the function of Gonadotropin Releasing Hormone (GnRH) neurons. During the juvenile period, GnRH neurons undergo morphological maturation, which involves changes in synaptic inputs and neuropeptide activation from afferent neurons. The functional importance of this maturation could be a pre-requisite for puberty onset. However, the mechanisms behind these dynamic changes have yet to be identified.<p cla...