Skip to main content
Article
Molecular analysis of the neuropeptide Y1 receptor gene in human idiopathic gonadotropin-dependent precocious puberty and isolated hypogonadotropic hypogonadism
Fertility and sterility
  • K. C. Freitas
  • Ginny L. Ryan, University of Iowa
  • V. N. Brito
  • Y. X. Tao
  • E. M. Costa
  • B. B. Mendonca
  • D. Segaloff
  • A. C. Latronico
Document Type
Article
Peer Reviewed
1
Publication Date
3-1-2007
NLM Title Abbreviation
Fertil Steril
PubMed ID
17140570
DOI of Published Version
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.

Keywords
  • Adolescent,
  • Adult,
  • Amino Acid Sequence,
  • Amino Acid Substitution,
  • Cells,
  • Cultured,
  • Child,
  • Child,
  • Preschool,
  • Female,
  • Humans,
  • Hypogonadism/genetics,
  • Infant,
  • Male,
  • Point Mutation,
  • Puberty,
  • Precocious/genetics,
  • Receptors,
  • Neuropeptide Y/genetics
Published Article/Book Citation
Fertility and sterility, 87:3 (2007) pp.627-634.
Disciplines
Citation Information
K. C. Freitas, Ginny L. Ryan, V. N. Brito, Y. X. Tao, et al.. "Molecular analysis of the neuropeptide Y1 receptor gene in human idiopathic gonadotropin-dependent precocious puberty and isolated hypogonadotropic hypogonadism" Fertility and sterility Vol. 87 Iss. 3 (2007) p. 627 - 634 ISSN: 1556-5653
Available at: http://works.bepress.com/ginny_ryan/5/