title: Genetic variants, endothelial function, and risk of preeclampsia among American Indians.
abstract: OBJECTIVE
  To determine the prevalence in an American Indian population of genetic variants with putative effects on endothelial function and determine whether they are associated with preeclampsia.
  
  
  METHODS
  Five genetic polymorphisms potentially related to endothelial function in the NOS3, GNB3, and DDAH1 genes were genotyped from a total of 101 cases, 198 controls, and an additional 110 population-based controls among an American Indian population.
  
  
  RESULTS
  The minor allele frequencies for NOS3 (rs1799983, rs3918227), GNB3 (rs5442), and DDAH1 (rs10158674, rs233115) among those with and without PE in this population were 25, 10, 5, 11, and 30%, respectively. Although not statistically significant, the maximum risk associated with any of these SNPs was 2.22 (0.734-6.73, 95% CI, p = 0.156) in a multivariate analysis of the A allele of the rs233115 SNP incorporated in a recessive model.
  
  
  CONCLUSIONS
  Although endothelial dysfunction likely plays a role in the pathophysiology of PE, this study was unable to find evidence for an association between these five SNPs on three genes influencing endothelial function and PE. This may be due to insufficient power to detect an association, investigation of SNPs without linkage to risk of PE in this population or other factors. Investigation of additional SNPs in these or related genes and other populations seems warranted.
authors.affiliation: Department of Natural Sciences, Turtle Mountain Community College, Belcourt, ND, USA. sbest@utma.com
authors.forename: Lyle G
authors.initials: LG
authors.lastname: Best
authors.forename: Melanie
authors.initials: M
authors.lastname: Nadeau
authors.forename: Shellee
authors.initials: S
authors.lastname: Bercier
authors.forename: Sara
authors.initials: S
authors.lastname: Dauphinais
authors.forename: Jacob
authors.initials: J
authors.lastname: Davis
authors.forename: Kylie
authors.initials: K
authors.lastname: Davis
authors.forename: Shyleen
authors.initials: S
authors.lastname: Poitra
authors.forename: Cindy M
authors.initials: CM
authors.lastname: Anderson
mesh_terms: D000293:Adolescent; D000328:Adult; D000581:Amidohydrolases / Q000235:genetics*; D016022:Case-Control Studies; D004730:Endothelium, Vascular / Q000503:physiopathology; D005260:Female; D020962:Heterotrimeric GTP-Binding Proteins / Q000235:genetics*; D006801:Humans; D007198:Indians, North American / Q000235:genetics*; D052250:Nitric Oxide Synthase Type III / Q000235:genetics*; D009658:North Dakota / Q000453:epidemiology; D020641:Polymorphism, Single Nucleotide; D011225:Pre-Eclampsia / Q000208:ethnology / Q000235:genetics* / Q000503:physiopathology; D011247:Pregnancy; D011446:Prospective Studies; D055815:Young Adult
chemical_list: C454420:G-protein beta3 subunit; C496314:NOS3 protein, human; D052250:Nitric Oxide Synthase Type III; D000581:Amidohydrolases; C059999:dimethylargininase; D020962:Heterotrimeric GTP-Binding Proteins