ESPE Abstracts

Congenital hypogonadotropic hypogonadism (CHH) is a rare disorder characterized by incomplete or absent puberty caused by the lack or deficient number of hypothalamic GnRH neurons, disturbed secretion or action of GnRH, or both. The association of CHH and a defective sense of smell (anosmia or hyposmia) found in approximately half of the CHH patients is termed Kallmann syndrome (KS). CHH is clinically and genetically heterogeneous, and >25 different causal genes have been ...

In male fetuses, during the first 4–6 months of life, the ‘mini-puberty’ represents a period of intense hormonal activity of the hypothalamic–pituitary axis, reflected physically by an increase in testicular volume due to seminiferous tubule elongation and by an increase in penis length. During this period, pituitary LH and FSH levels rise, leading to an increase in circulating levels of testosterone, inhibin B and AMH. Concomitantly, Sertoli cells prolifer...

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