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To attain sexual competence, all mammalian species go through puberty, a maturational period during which body growth and development of secondary sexual characteristics occurs. Puberty begins with the reawakening of the gonadotropin-releasing hormone (GnRH) pulse generator. Reduction in inhibitory transsynaptic inputs combined with increased transsynaptic and glial excitatory inputs to the GnRH neuronal network are responsible for pubertal activation of GnRH neuro-secretion. ...

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hrp0082fc5.3 | Neuroendocrinology | ESPE2014

Loss of Function Mutations in pnpla6 Cause Hypogonadotropic Hypogonadism due to Impaired LH Release from Pituitary Gonadotropes

Topaloglu Ali Kemal , Lomniczi Alejandro , Kretzschmar Doris , Dissen Gregory A , Damla Kotan Leman , McArdle Craig A , Koc A. Filiz , Hamel Ben C , Guclu Metin , Papatya Esra D , Eren Erdal , Mengen Eda , Gurbuz Fatih , Cook Mandy , Castellano Juan M , Kekil M. Burcu , Mungan Neslihan O , Yuksel Bilgin , Ojeda Sergio R

Background: Gordon Holmes syndrome (GHS) is characterized by cerebellar ataxia/atrophy and normosmic hypogonadotropic hypogonadism (nHH). The underlying pathophysiology of this combined neurodegeneration and nHH remains unknown.Patients and methods: We studied a cohort of multiplex families with GHS through autozygosity mapping and whole exome sequencing.Results: We identified patients from three independent families carrying loss-...

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ESPE Abstracts

Epigenetics of delayed puberty: recent advances

Loss of Function Mutations in pnpla6 Cause Hypogonadotropic Hypogonadism due to Impaired LH Release from Pituitary Gonadotropes

BiosciAbstracts