title: Haplotype-based case-control study of estrogen receptor alpha (ESR1) gene and pregnancy-induced hypertension.
abstract: Hypotheses about pregnancy-induced hypertension (PIH) have been proposed to explain the vascular damage that characterizes this disease. Reports indicate that estrogens and estrogen receptors play important physiological roles in cardiovascular diseases. There have been studies examining the association between coronary artery disease and the estrogen receptor alpha (ESR1) gene. The aim of the present work was to assess the association between PIH and single-nucleotide polymorphisms (SNPs) in the human ESR1 gene, by conducting a haplotype-based case-control study. Based on a database search at the web site of the National Center of Biotechnology Information, we chose five SNPs in the human ESR1 gene, and performed an association study using 95 PIH patients and 200 age-matched non-PIH subjects. The frequency of rs2881766 genotypes and alleles differed significantly between the two groups. There was no significant difference in overall distribution of genotypes or alleles of the other four SNPs. The T allele of rs2881766 was significantly more prevalent in the PIH group than in the non-PIH group. Haplotype-based case-control analysis revealed that there was a significant difference in overall distribution of the combinations rs2881766-rs1643821-rs988328 and rs2881766-rs1643821 between the PIH group and the non-PIH group (all or body mass index [BMI]-matched). One susceptibility haplotype for PIH and two resistance haplotypes for PIH were revealed by comparison between the PIH group and the non-PIH (BMI-matched) control group. In conclusion, the T allele of rs2881766 could be a useful genetic marker of PIH. The G-A-T haplotype of rs2881766-rs1643821-rs988328 and the G-A haplotype of rs2881766-rs1643821 appear to be resistance markers of PIH.
authors: Department of Obstetrics, Nihon University School of Medicine, Tokyo, Japan.
authors: Masaaki
authors: M
authors: Tamura
authors: Tomohiro
authors: T
authors: Nakayama
authors: Ichiro
authors: I
authors: Sato
authors: Naoyuki
authors: N
authors: Sato
authors: Noriko
authors: N
authors: Izawa
authors: Mikano
authors: M
authors: Hishiki
authors: Yoshihiro
authors: Y
authors: Mizutani
authors: Kiyohide
authors: K
authors: Furuya
authors: Tatsuo
authors: T
authors: Yamamoto
mesh_terms: D000293:Adolescent; D000328:Adult; D015992:Body Mass Index; D016022:Case-Control Studies; D047628:Estrogen Receptor alpha / Q000235:genetics*; D005260:Female; D006239:Haplotypes; D006801:Humans; D046110:Hypertension, Pregnancy-Induced / Q000235:genetics*; D015810:Linkage Disequilibrium; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D011247:Pregnancy
chemical_list: D047628:Estrogen Receptor alpha