title: Single nucleotide polymorphisms in G protein signaling pathway genes in preeclampsia.
abstract: Preeclampsia is a pregnancy specific disorder and a risk factor for later cardiovascular disease. The cause and detailed pathophysiology remains unknown. G protein signaling is involved in a variety of physiological processes, including blood pressure regulation. We assessed whether distributions of 3 single nucleotide polymorphisms in genes coding for components of G protein signaling pathways that have been associated with hypertension differ between women with preeclampsia and normotensive pregnant women; the G protein β3 subunit gene (GNB3) C825T polymorphism (rs5443), the angiotensin II type 1 receptor gene (AGTR1) 3'UTR A1166C polymorphism (rs5186), and the regulator of G protein signaling 2 gene (RGS2) 3'UTR C1114G polymorphism (rs4606). Two separate Norwegian study populations were used; a large population based study and a smaller, but clinically well-described pregnancy biobank. A descriptive study of 43 women with eclampsia was additionally included. In the population-based study, an increased odds of preeclampsia (odds ratio, 1.21; [95% confidence interval, 1.05-1.40]; P=0.009) and recurrent preeclampsia (odds ratio, 1.43; [95% confidence interval, 1.06-1.92];, P=0.017) was found in women carrying the rs4606 CG or GG genotype. In early-onset preeclamptic patients with decidual spiral artery biopsies available (n=24), the rs4606 CG or GG genotype was more frequent in those with acute atherosis (resembling early stage of atherosclerosis) compared with those without: odds ratio, 15.0; (95% confidence interval, 2.02-111.2); P=0.004. No association was found between preeclampsia and the rs5443 or the rs5186. The genotype distribution in eclamptic women was not different from preeclamptic women. In conclusion, RGS2 rs4606 may affect the risk and progression of preeclampsia.
authors: Department of Obstetrics, Oslo University Hospital, Oslo, Norway.
authors: Anne Stine
authors: AS
authors: Kvehaugen
authors: Oyvind
authors: O
authors: Melien
authors: Oddgeir Lingaas
authors: OL
authors: Holmen
authors: Hannele
authors: H
authors: Laivuori
authors: Pål
authors: P
authors: Oian
authors: Alice Beathe
authors: AB
authors: Andersgaard
authors: Ralf
authors: R
authors: Dechend
authors: Anne Cathrine
authors: AC
authors: Staff
mesh_terms: D000328:Adult; D050197:Atherosclerosis / Q000453:epidemiology / Q000235:genetics; D018070:Biological Specimen Banks / Q000706:statistics & numerical data; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000453:epidemiology; D020962:Heterotrimeric GTP-Binding Proteins / Q000235:genetics*; D006801:Humans; D009664:Norway / Q000453:epidemiology; D011110:Polymorphism, Genetic; D020641:Polymorphism, Single Nucleotide; D011225:Pre-Eclampsia / Q000453:epidemiology / Q000235:genetics*; D011247:Pregnancy; D015995:Prevalence; D020710:RGS Proteins / Q000235:genetics*; D044140:Receptor, Angiotensin, Type 1 / Q000235:genetics; D015398:Signal Transduction / Q000235:genetics*; D044465:White People / Q000235:genetics / Q000706:statistics & numerical data; D055815:Young Adult
chemical_list: C544065:AGTR1 protein, human; C454420:G-protein beta3 subunit; D020710:RGS Proteins; C087182:RGS2 protein, human; D044140:Receptor, Angiotensin, Type 1; D020962:Heterotrimeric GTP-Binding Proteins