ESR1 and ESR2 gene polymorphisms are associated with human reproduction outcomes in Brazilian women

Autor(es)

de Mattos, Clarissa Santiago ^[1] ; Trevisan, Camila Martins ^[1] ; Peluso, Carla ^[1] ; Adami, Fernando ^[2] ; Cordts, Emerson Barchi ^[1] ; Christofolini, Denise Maria ^[1] ; Barbosa, Caio Parente ^[1] ; Bianco, Bianca ^[1]

Afiliação do(s) autor(es)

^[1] Fac Med ABC, Human Reprod & Genet Ctr, Div Sexual & Reprod Healthcare & Populat Genet, BR-09060650 Santo Andre, SP - Brazil

^[2] Fac Med ABC, Div Epidemiol & Biostat, Dept Collect Hlth, Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF OVARIAN RESEARCH; v. 7, DEC 20 2014.
• Citações Web of Science: 9

Resumo

Background: Important candidate genes involved in the ovarian response to exogenous FSH are the estrogen receptor genes (ESRs), since the effects of estrogens on follicle growth, maturation and oocyte release. It is known that some markers of ovarian stimulation can help to personalize the treatment, adjusting the dose of exogenous rFSH, thus preventing excessive wear of the patient. Inspired on this information we aimed to analyze four different polymorphisms in the estrogen receptor genes ESR1: rs2234693/T-397C (PvuII) and rs9340799/A-351G (Xbal) and ESR2: rs4986938/G1082A (RsaI) and rs1256049/A + 1730G (AluI), and their association with assisted reproduction outcomes in Brazilian women that underwent in vitro fertilization (IVF). Methods: A cross-sectional study was performed involving 136 infertile women less than 39 years of age with normal ovarian reserve. Patients were divided according to the same COH protocol for statistical analysis. The Taqman assay was used for PvuII and XbaI of ESR1, and RsaI and AluI of ESR2 genotyping. Serum estradiol and FSH were measured by Elisa assay. Results: The PvuII (ESR1) TT and RsaI (ESR2) GG genotypes were associated with a longer induction period and higher doses of medication (p < 0.03). The XbaI (ESR1) AA genotype was associated with better COH results, including a larger number of follicles, mature oocytes, embryos, and good quality embryos (p < 0.05). The AluI GG genotype showed an association with the Ovarian Hyperstimulation Syndrome (OHSS) (p = 0.03). According to the haplotype analysis of ER1 (PvuII/XbaI), we demonstrated that the CA combination increases by 0.68 the number of good quality embryos while the TG decreases it by 0.71 (p = 0.04). Conclusion: ER polymorphisms have an association with the assisted reproduction outcomes in Brazilian women. (AU)

• Processo FAPESP: 11/15045-4 - Avaliação de polimorfismos dos genes Amh e AMHR2 em mulheres inférteis e sua correlação com resultados de reprodução assistida
• Beneficiário: Carla Peluso de Paiva
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 14/06177-2 - Avaliação de mutações/polimorfismos em genes candidatos em mulheres inférteis e sua correlação com resultados de reprodução assistida
• Beneficiário: Bianca Alves Vieira Bianco
• Modalidade de apoio: Auxílio à Pesquisa - Regular