title: Lack of association of estrogen receptor alpha gene polymorphisms with cardiorespiratory and metabolic variables in young women.
abstract: This study examined the association of estrogen receptor alpha gene (ESR1) polymorphisms with cardiorespiratory and metabolic parameters in young women. In total, 354 healthy women were selected for cardiopulmonary exercise testing and short-term heart rate (HR) variability (HRV) evaluation. The HRV analysis was determined by the temporal indices rMSSD (square root of the mean squared differences of successive R-R intervals (RRi) divided by the number of RRi minus one), SDNN (root mean square of differences from mean RRi, divided by the number of RRi) and power spectrum components by low frequency (LF), high frequency (HF) and LF/HF ratio. Blood samples were obtained for serum lipids, estradiol and DNA extraction. ESR1 rs2234693 and rs9340799 polymorphisms were analyzed by PCR and fragment restriction analysis. HR and oxygen uptake (VO(2)) values did not differ between the ESR1 polymorphisms with respect to autonomic modulation. We not find a relationship between ESR1 T-A, T-G, C-A and C-G haplotypes and cardiorespiratory and metabolic variables. Multiple linear regression analysis demonstrated that VO(2), total cholesterol and triglycerides influence HRV (p < 0.05). The results suggest that ESR1 variants have no effect on cardiorespiratory and metabolic variables, while HRV indices are influenced by aerobic capacity and lipids in healthy women.
authors.affiliation: Department of Morphology, (Campus II), Federal University of Goiás, 74001-970, Goiânia, GO, Brazil. anacristina.silvarebelo@gmail.com.
authors.forename: Ana Cristina
authors.initials: AC
authors.lastname: Rebelo
authors.forename: Rozangela
authors.initials: R
authors.lastname: Verlengia
authors.forename: Vandeni
authors.initials: V
authors.lastname: Kunz
authors.forename: Nayara
authors.initials: N
authors.lastname: Tamburus
authors.forename: Alvaro
authors.initials: A
authors.lastname: Cerda
authors.forename: Rosario
authors.initials: R
authors.lastname: Hirata
authors.forename: Mario
authors.initials: M
authors.lastname: Hirata
authors.forename: Ester
authors.initials: E
authors.lastname: Silva
mesh_terms: D000293:Adolescent; D000328:Adult; D002318:Cardiovascular Diseases / Q000209:etiology / Q000235:genetics; D003710:Demography; D047628:Estrogen Receptor alpha / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006239:Haplotypes; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D016014:Linear Models; D008055:Lipids / Q000097:blood; D010101:Oxygen Consumption; D011110:Polymorphism, Genetic; D012307:Risk Factors; D055815:Young Adult
chemical_list: D047628:Estrogen Receptor alpha; D008055:Lipids