Journal article
Molecular analysis of the neuropeptide Y1 receptor gene in human idiopathic gonadotropin-dependent precocious puberty and isolated hypogonadotropic hypogonadism
Fertility and sterility, Vol.87(3), pp.627-634
03/01/2007
DOI: 10.1016/j.fertnstert.2006.07.1519
Abstract
Objective
To investigate the role of mutations or polymorphisms in the NPY-Y1R gene in human idiopathic central pubertal disorders.
Design
Molecular studies.
Setting
University hospital.
Patient(s)
Thirty-three patients with gonadotropin-dependent precocious puberty, 22 with hypogonadotropic hypogonadism, and 50 controls.
Intervention(s)
Genomic DNA extraction, NPY-Y1R gene sequence analysis, cell-surface expression, and functional activity of an identified receptor variant.
Main Outcome Measure(s)
Results of sequencing, cell-surface receptor expression, and receptor function.
Result(s)
A heterozygous substitution of lysine (K) by threonine (T) at position 374 in the carboxyl terminal region of NPY-Y1R was identified in a girl with familial GDPP. Her mother, who had pubertal developmental at appropriate age, carried the same genetic variant. Introduction of the K374T variant into an expression vector containing the human NPY-Y1R complementary DNA led to a partial reduction in cell-surface expression of NPY-Y1R in transiently transfected HEK293 cells. This mutation did not lead to a significant reduction in NPY-stimulated activity of the receptor in this heterologous expression system. No other allelic variants of the NPY-Y1R gene were identified in patients or controls.
Conclusion(s)
We have identified an inherited heterozygous variant of the NPY-Y1R gene in a girl with precocious puberty; however, this most likely did not contribute to her phenotype. Mutations of the highly conserved NPY-Y1R gene do not appear to represent a frequent mechanism underlying human idiopathic central pubertal disorders.
Details
- Title: Subtitle
- Molecular analysis of the neuropeptide Y1 receptor gene in human idiopathic gonadotropin-dependent precocious puberty and isolated hypogonadotropic hypogonadism
- Creators
- Karina Cocco Monteiro FreitasGinny L. Ryan - University of IowaVinicius Nahime BritoYa-Xiong TaoElaine Maria Frade CostaBerenice Bilharinho MendoncaDeborah SegaloffAna Claudia Latronico
- Resource Type
- Journal article
- Publication Details
- Fertility and sterility, Vol.87(3), pp.627-634
- DOI
- 10.1016/j.fertnstert.2006.07.1519
- ISSN
- 0015-0282
- Language
- English
- Date published
- 03/01/2007
- Academic Unit
- Molecular Physiology and Biophysics; Obstetrics and Gynecology
- Record Identifier
- 9983557117402771
Metrics
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