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    The antihypertensive MTHFR gene polymorphism rs17367504-G is a possible novel protective locus for preeclampsia

    Access Status
    Fulltext not available
    Authors
    Thomsen, L.
    Mccarthy, N.
    Melton, P.
    Cadby, G.
    Austgulen, R.
    Nygård, O.
    Johnson, M.
    Brennecke, S.
    Moses, Eric
    Bjørge, L.
    Iversen, A.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Thomsen, L. and Mccarthy, N. and Melton, P. and Cadby, G. and Austgulen, R. and Nygård, O. and Johnson, M. et al. 2016. The antihypertensive MTHFR gene polymorphism rs17367504-G is a possible novel protective locus for preeclampsia. Journal of Hypertension. 35 (1): pp. 132-139.
    Source Title
    Journal of Hypertension
    DOI
    10.1097/HJH.0000000000001131
    ISSN
    0263-6352
    School
    School of Biomedical Sciences
    URI
    http://hdl.handle.net/20.500.11937/19530
    Collection
    • Curtin Research Publications
    Abstract

    Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved. OBJECTIVE: Preeclampsia is a complex heterogeneous disease commonly defined by new-onset hypertension and proteinuria in pregnancy. Women experiencing preeclampsia have increased risk for cardiovascular diseases (CVD) later in life. Preeclampsia and CVD share risk factors and pathophysiologic mechanisms, including dysregulated inflammation and raised blood pressure. Despite commonalities, little is known about the contribution of shared genes (pleiotropy) to these diseases. This study aimed to investigate whether genetic risk factors for hypertension or inflammation are pleiotropic by also being associated with preeclampsia. METHODS:: We genotyped 122 single nucleotide polymorphisms (SNPs) in women with preeclampsia (n?=?1006) and nonpreeclamptic controls (n?=?816) from the Norwegian HUNT Study. SNPs were chosen on the basis of previously reported associations with either nongestational hypertension or inflammation in genome-wide association studies. The SNPs were tested for association with preeclampsia in a multiple logistic regression model. RESULTS:: The minor (G) allele of the intronic SNP rs17367504 in the gene methylenetetrahydrofolate reductase (MTHFR) was associated with a protective effect on preeclampsia (odds ratio 0.65, 95% confidence interval 0.53–0.80) in the Norwegian cohort. This association did not replicate in an Australian preeclampsia case–control cohort (P?=?0.68, odds ratio 1.05, 95% confidence interval 0.83–1.32, minor allele frequency?=?0.15). CONCLUSION:: MTHFR is important for regulating transmethylation processes and is involved in regulation of folate metabolism. The G allele of rs17367504 has previously been shown to protect against nongestational hypertension. Our study suggests a novel association between this allele and reduced risk for preeclampsia. This is the first study associating the minor (G) allele of a SNP within the MTHFR gene with a protective effect on preeclampsia, and in doing so identifying a possible pleiotropic protective effect on preeclampsia and hypertension.This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0

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