ESPE Abstracts

Gonadotropin releasing hormone (GnRH) neurons embryonically originate in nasal placode and migrate to hypothalamus, where they release GnRH to control reproduction. Defective GnRH neuron development or function leads to GnRH deficiency (GD), which is often associated to neurodevelopmental and neurological syndromes, including epilepsy, ataxia, intellectual disabilities and deafness. In addition, a register-based study showed correlation between delayed puberty and neurodevelop...

Innervation of the hypothalamic median eminence by Gonadotropin-Releasing Hormone (GnRH) neurons is vital to ensure puberty onset and successful reproduction. However, the molecular and cellular mechanisms underlying median eminence development and pubertal timing are incompletely understood. Here we show that Semaphorin-6A is strongly expressed by median eminence-resident oligodendrocytes positioned adjacent to GnRH neuron projections and fenestrated capillaries, and that Sem...