Evidence map›Paper›PMID 26675765›Full record

Trial reportThe American journal of clinical nutrition2016

Genetic polymorphisms that affect selenium status and response to selenium supplementation in United Kingdom pregnant women.

Jinyuan Mao, Jessica J Vanderlelie, Anthony V Perkins, Christopher W G Redman, Kourosh R Ahmadi, Margaret P Rayman

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The American journal of clinical nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.9field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 54 citations in OpenAlex.

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  7. International journal of molecular sciences · 2023
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  10. The Association of Familial Hypertension and Risk of Gestational Hypertension and Preeclampsia.International journal of environmental research and public health · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 3 countries.

Jinyuan MaoDepartment of Endocrinology and Metabolism, the First Hospital of China Medical University, Shenyang, China; Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom;
Jessica J VanderlelieSchool of Medical Science, Griffith Health Institute, Griffith University, Queensland, Australia; and.
Anthony V PerkinsSchool of Medical Science, Griffith Health Institute, Griffith University, Queensland, Australia; and.
Christopher W G RedmanNuffield Department of Obstetrics and Gynecology, University of Oxford, Oxford, United Kingdom.
Kourosh R AhmadiDepartment of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom;
Margaret P RaymanDepartment of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom; m.rayman@surrey.ac.uk.
University of Surrey · GBGriffith University · AUUniversity of Oxford · GB

Funding

Wellcome Trust 083918/Z/07/Z
6 · The paper itself

Abstract

backgroundLow selenium status in pregnancy has been associated with a number of adverse conditions. In nonpregnant populations, the selenium status or response to supplementation has been associated with polymorphisms in dimethylglycine dehydrogenase (DMGDH), selenoprotein P (SEPP1) and the glutathione peroxidases [cytosolic glutathione peroxidase (GPx1) and phospholipid glutathione peroxidase (GPx4)].

objectiveWe hypothesized that, in pregnant women, these candidate polymorphisms would be associated with selenium status in early pregnancy, its longitudinal change, and the interindividual response to selenium supplementation at 60 μg/d.

designWith the use of stored samples and data from the United Kingdom Selenium in Pregnancy Intervention (SPRINT) study in 227 pregnant women, we carried out genetic-association studies, testing for associations between selenium status, its longitudinal change, and response to supplementation and common genetic variation in DMGDH (rs921943), SEPP1 (rs3877899 and rs7579), GPx1 (rs1050450) and GPx4 (rs713041). Selenium status was represented by the concentration of whole-blood selenium at 12 and 35 wk of gestation, the concentration of toenail selenium at 16 wk of gestation, and plasma glutathione peroxidase (GPx3) activity at 12 and 35 wk of gestation.

resultsOur results showed that DMGDH rs921943 was significantly associated with the whole-blood selenium concentration at 12 wk of gestation (P = 0.032), which explained ≤2.0% of the variance. This association was replicated with the use of toenail selenium (P = 0.043). In unsupplemented women, SEPP1 rs3877899 was significantly associated with the percentage change in whole-blood selenium from 12 to 35 wk of gestation (P = 0.005), which explained 8% of the variance. In supplemented women, SEPP1 rs3877899 was significantly associated with the percentage change in GPx3 activity from 12 to 35 wk of gestation (P = 0.01), which explained 5.3% of the variance. Selenium status was not associated with GPx1, GPx4, or SEPP1 rs7579.

conclusionsIn agreement with previous studies, we show that the genetic variant rs921943 in DMGDH is significantly associated with selenium status in United Kingdom pregnant women. Notably, our study shows that women who carry the SEPP1 rs3877899 A allele are better able to maintain selenium status during pregnancy, and their GPx3 activity increases more with supplementation, which suggests better protection from low selenium status. The SPRINT study was registered at www.isrctn.com as ISRCTN37927591.

Indexed as

Dietary SupplementsPolymorphism, Single NucleotideDeficiency DiseasesDimethylglycine DehydrogenaseFemaleGenetic Association StudiesGlutathione PeroxidaseHumansNailsNutritional StatusPregnancyPregnancy ComplicationsSeleniumSelenoprotein PUnited KingdomDimethylglycine DehydrogenaseGlutathione PeroxidaseSeleniumSelenoprotein PDMGDHpolymorphismspregnancyselenium statusSEPP1

Identifiers

PMID26675765
PMCPMC4691667
OpenAlexW2207775534

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.