Hypoxia-inducible factor-1α gene polymorphisms in early and late onset preeclampsia in Sinhalese women

被引:16
作者
Andraweera, P. H. [1 ,2 ]
Dekker, G. A. [1 ,3 ]
Thompson, S. D. [1 ]
Dissanayake, V. H. W. [2 ]
Jayasekara, R. W. [2 ]
Roberts, C. T. [1 ]
机构
[1] Univ Adelaide, Robinson Inst, Sch Paediat & Reprod Hlth, Adelaide, SA, Australia
[2] Univ Colombo, Fac Med, Human Genet Unit, Colombo, Sri Lanka
[3] Lyell McEwin Hosp, Womens & Childrens Div, Elizabeth Vale, SA, Australia
基金
澳大利亚国家健康与医学研究理事会; 英国医学研究理事会;
关键词
Hypoxia inducible factor 1 alpha; Polymorphism; Preeclampsia; GROWTH-FACTOR FAMILY; PREGNANCY; TROPHOBLAST;
D O I
10.1016/j.placenta.2014.04.008
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Introduction: Early (EPE) and late (LPE) onset preeclampsia are increasingly being recognized as two distinct disorders. Placental vascular defects are more common in EPE. Hypoxia Inducible Factor 1 alpha (HIF1 alpha) regulates the expression of many angiogenic growth factors in the placenta. We studied the association of two polymorphisms in the HIF1 alpha gene (rs11549465 and rs10873142) with EPE and LPE. Methods: 175 nulliparous Sinhalese women with preeclampsia and 171 normotensive women matched for age, ethnicity, parity and BMI were recruited at two tertiary care hospitals in Colombo. Preeclampsia was diagnosed using international guidelines. DNA extracted from peripheral blood was genotyped using Sequenom MassARRAY. Results: HIF1 alpha rs11549465 dominant model and T allele were reduced in women who developed EPE compared to controls [P = 0.002, OR (95% CI) = 0.3 (0.1-0.7)], in preeclamptic women who delivered small for gestational age babies [P = 0.02, OR (95% CI) = 0.5 (0.2-0.9)] compared to controls and in women who developed EPE compared to those who developed LPE [P = 0.006, OR (95% CI) = 0.3 (0.1 -0.7)]. Conclusion: Our results demonstrate a protective effect of the T allele in LPE and normal pregnancy, which is relatively lacking in EPE due to low prevalence of this protective allele. HIFI a rs11549465 T allele was previously demonstrated to be associated with a higher transcriptional activity and increased angiogenesis. Inherited susceptibility to increased HIF1 alpha expression resulting in the up-regulation of angiogenic genes may mediate a protective effect in normal pregnancy and pregnancy complicated by LPE. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:491 / 495
页数:5
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