Hypogonadisme hypogonadotrope: notions récentes sur la régulation de l’axe hypothalamo-hypophyso-gonadiqueHypogonadotropic hypogonadism: new. Troubles de l’axe hypothalamo-hypophyso-ovarien chez la femme alcoolique Queval D, Delcroix MExploration de l’axe hypothalamo gonadique chez les. (ré)activation de l’axe hypothalamo-hypophyso-gonadique conduit à une série de changements physiques aboutissant à la maturation et au maintien d’un.
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Hypogonadotropic hypogonadism HH is defined by the absence of sex steroid synthesis associated with the lack of appropriate gonadotrophin secretion.
This leads to a variable degree of impuberism, often diagnosed during childhood or adolescence. Genetics of HH involve many genes.
À propos de l’exploration de l’axe hypothalamo-hypophyso-gonadique – EM|consulte
Kallmann syndrome KS is defined by the association of HH and anosmia. However, genetics of KS is complex, because of the variability of the phenotype for a similar molecular defect. Otherwise, heterozygous anomalies are frequently described. Identification in the same patient of several mutations in some of these genes digenism could account for this variability. Autosomal recessive yonadique is frequently observed in familial cases of HH without anosmia.
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Molecular alterations have been identified for several neuropeptides or their corresponding receptors, which are involved in the physiology of the gonadotropic axis: Anomalies of leptin or its receptor are also involved in HH cases.
A new negative regulating element has been recently identified in humans: Recent progress about these neuropeptides leads to a new model of comprehension of the gonadotropic axis physiology, from a linear model to a network model, which regulates the central element of regulation of the gonadotropic axis, represented by the GnRH neurons.
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Bouvattier 2M. Outline Masquer le plan. The full text of this article is available in PDF format.
Click here to see it. Top of the page – Article Outline. Non-syndromic congenital hypogonadotropic hypogonadism: A possible role for reproductive hormones in newborn boys: The complex genetics of Kallmann syndrome: Genetic analysis zxe patients with Kallmann syndrome: Mutations in prokineticin 2 and prokineticin receptor 2 genes in human gonadotrophin-releasing hormone deficiency: J Clin Endocrinol Metab June 23 [in press]. X-linked congenital adrenal hypoplasia: Clinical Approach to Hypogonadotropic Hypogonadism Endocrine 92 nd annual meeting: Management of Hypogonadism through Puberty Endocrine 92 nd annual meeting: Normosmic Isolated Hypogonadotropic Hypogonadism: Contact Help Who are we?
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