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Title: Analysis of the PvuII and XbaI polymorphisms in the estrogen receptor alpha gene in girls with central precocious puberty: a pilot study
Authors: Soares Jr., Jose Maria
Holanda, Felisbela Soares de [UNIFESP]
Matsuzaki, Cezar Noboru
Sorpreso, Isabel Cristina Esposito
Veiga, Eduardo Carvalho de Arruda [UNIFESP]
Abreu, Luiz Carlos de
Carvalho, Katia Candido
Baracat, Edmund Chada [UNIFESP]
Keywords: Puberty
Central precocious puberty
Gene of the estrogen receptor alpha (ESR1)
PvuII polymorphism
XbaI polymorphism
Issue Date: 2018
Publisher: Biomed Central Ltd
Citation: Bmc Medical Genetics. London, v. 19, p. -, 2018.
Abstract: Background: Precocious puberty (PP) is defined as premature pubertal development. Its consequences surpass the physical evidence of sexual maturity with the premature epiphyseal closure of the long bones and the reduction of adult stature by varied degrees. Central PP is characteristically dependent on GnRH and most of its causes are not completely known. Altered estrogen action is also believed to be involved in the genesis of PP. In fact, estrogen receptor alpha (Rea) gene polymorphisms may be associated with early age at menarche. The objective of this study was to investigate the relationship between Rea gene polymorphisms (PvuII and XbaI) and the occurrence of central PP. Methods: A total of 73 girls with central PP and 101 girls with normal pubertal maturation were evaluated. Both groups were genotyped for the PvuII (T/C) and XbaI (A/G) polymorphisms in the Rea gene. Results: The frequency distribution of the XbaI (p = 0.28) and of the PvuII (p = 0.12) genotypes, as well as the XbaI and PvuII allelic variants (p = 0.23 and p = 0.86, respectively), did not differ between the groups. Conclusion: The PvuII and XbaI Rea gene polymorphisms do not appear to be related to development of central PP.
ISSN: 1471-2350
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