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Related to hypergonadotropic hypogonadism: hypogonadotropic hypogonadism
decreased functional activity of the gonads, with retardation of growth, sexual development, and secondary sex characters. The American Association of Clinical Endocrinologists has published “Clinical Practice Guidelines for the Evaluation and Treatment of Hypogonadism in Adult Male Patients.” These are available online at their web site: http://www.aace.com.
hypergonadotropic hypogonadism that associated with secretion of high levels of gonadotropins, as in Klinefelter's syndrome. Called also hypergonadotropic eunuchoidism.
hypogonadotropic hypogonadism that due to lack of gonads or of gonadotropin secretion. Called also hypogonadotropic eunuchoidism.
defective gonadal development or function of the gonads, resulting in elevated levels of gonadotropins.
LHCGRA gene on chromosome 2p21 that encodes a cell surface receptor for both luteinising hormone and choriogonadotropin, which belongs to the G-protein-coupled receptor 1 family. LHCGR’s activity is mediated by adenylate cyclase-activating G proteins.
LHCGR mutations cause a range of disorders affecting male secondary sexual development, such as familial male precocious puberty (testotoxicosis), hypogonadotropic hypogonadism, Leydig cell adenoma with precocious puberty and male pseudohermaphtoditism with Leydig cell hypoplasia.