Cited by 169Hypothalamic control of reproductive hormonesSexual Differentiation and DisordersGrowth Hormone and Insulin-like Growth Factors

Neuroendocrine Phenotype Analysis in Five Patients with Isolated Hypogonadotropic Hypogonadism due to a L102P Inactivating Mutation of GPR54

Tenenbaum-Rakover, Yardena, Commenges-Ducos, Monique, Iovane, André, Aumas, Chantal, Admoni, Osnat, de Roux, Nicolas·2007·The Journal of Clinical Endocrinology & Metabolism

Abstract

Context: Loss of function of the G protein-coupled receptor of kisspeptins (GPR54) was recently described as a new cause of isolated hypogonadotropic hypogonadism. In vivo studies performed in several species have confirmed the major role of kisspeptins in neuroendocrine regulation of the gonadotropic axis and therefore sexual maturation. Objective: The objective of this study was to specify the exact contribution of kisspeptins and GPR54 to the initiation of puberty in humans. Design: Detailed neuroendocrine descriptions were performed in five patients with isolated hypogonadotropic hypogonadism bearing a new GPR54-inactivating mutation. Results: A homozygous mutation (T305C) leading to a leucine substitution with proline (L102P) was found in the five affected patients. This substitution completely inhibited GPR54 signaling. Phenotypic analysis revealed variable expressivity in the same family, either partial or complete gonadotropic deficiency. LH pulsatility analysis showed peaks with normal frequency but low amplitude. Repeated GnRH tests performed between 12 and 21 yr of age in one affected male revealed progressive changes in pituitary response from an early pubertal to an almost full pubertal pattern. Double GnRH test stimulations performed at a 120-min interval showed reduced dynamic pituitary response in GPR54-mutated patients. Conclusion: GPR54 inactivation does not impede neuroendocrine onset of puberty; rather, it delays and slows down pubertal maturation of the gonadotropic axis. The L102P loss of function mutation in GPR54 results in a more quantitative than qualitative defect of gonadotropic axis activation.

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Crossref · 10.1210/jc.2006-2147

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  • The Leu102Pro substitution in the first extracellular loop of the KiSS-1 receptor decreases receptor expression and impairs its signaling ability.

    “Another single amino acid substitution of the KiSS-1 receptor (Leu102Pro) identified in patients with IHH is located in the first extracellular loop of the receptor. The mutation decreases the expression of the receptor and impairs its signaling ability.”

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Authors
Tenenbaum-Rakover, Y., Commenges-Ducos, M., Iovane, A., Aumas, C., Admoni, O., & de Roux, N.
Affiliations
  • Pediatric Endocrine Unit (Y.T.-R., O.A.), Ha’Emek Medical Center, Afula 18101, Israel
  • Centre Hospitalier Universitaire de Bordeaux (FR)
  • Institut National de la Santé et de la Recherche Médicale U690, Hôpital Robert Debré (A.I., C.A., N.d.R.), 75019 Paris, France
  • Inserm (FR)
  • Emek Medical Center (IL)
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2007-03-01
Volume
92
Issue
3
Pages
1137-1144
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2128836311
Cited by
169
References
39
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 2 · 2022: 2 · 2021: 3 · 2020: 8 · 2019: 9 · 2018: 6 · 2017: 4 · 2016: 8 · 2015: 7 · 2014: 14 · 2013: 13 · 2012: 14
FWCI
13.37
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
Keywords
isolated hypogonadotropic hypogonadism, GPR54, kisspeptin receptor, loss-of-function mutations, kisspeptin, puberty onset, gonadotropic axis, LH pulsatility, GnRH stimulation test, pituitary responsiveness, sexual maturation, variable expressivity
MeSH terms
Receptors, Kisspeptin-1, Adult, Cells, Cultured, DNA Mutational Analysis, Female, Humans, Hypogonadism, Luteinizing Hormone, Male, Models, Biological, Mutation, Pedigree, Phenotype, Pituitary Function Tests, Polymorphism, Genetic, Pulsatile Flow, Sequence Analysis, DNA, Receptors, G-Protein-Coupled

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