Evidence map›Paper›PMID 31791965›Full record

ArticleBMJ open2019

Angiogenic factors during pregnancy in Asian women with elevated blood pressure in early pregnancy and the risk of preeclampsia: a longitudinal cohort study.

Jing Zhu, Jun Zhang, Mor Jack Ng, Bernard Chern, George Sh Yeo, Kok Hian Tan

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.8field-weighted citation impact, top 14% 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

6 citing papers in PubMed, 14 citations in OpenAlex.

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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 2 institutions in 2 countries.

Jing ZhuMOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Jun ZhangMOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China junjimzhang@sina.com.ORCID 0000-0003-1706-1611
Mor Jack NgDivision of Obstetrics and Gynaecology, KK Women's and Children's Hospital, Singapore, Singapore.
Bernard ChernDivision of Obstetrics and Gynaecology, KK Women's and Children's Hospital, Singapore, Singapore.
George Sh YeoDepartment of Maternal and Fetal Medicine, KK Women's and Children's Hospital, Singapore, Singapore.
Kok Hian TanDivision of Obstetrics and Gynaecology, KK Women's and Children's Hospital, Singapore, Singapore.
KK Women's and Children's Hospital · SGShanghai Jiao Tong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIt remains unclear what roles placenta-originated angiogenic factors play in the pathogenesis of preeclampsia among hypertensive women. We compared maternal soluble fms-like tyrosine kinase 1 (sFlt-1) and placental growth factor (PlGF) levels throughout pregnancy in women with normal blood pressure (BP), elevated BP and hypertension in early pregnancy and their risks of developing preeclampsia.

designA prospective cohort study.

settingKK Women's and Children's Hospital, Singapore.

participants923 women with singleton pregnancy <14 weeks of gestation were included in the prospective Neonatal and Obstetrics Risks Assessment cohort between September 2010 and October 2014. Systolic, diastolic, mean arterial blood pressure (MAP) were measured at 11-14 weeks. PRIMARY AND SECONDARY OUTCOMES: Maternal serum sFlt-1, PlGF and sFlt-1/PlGF ratio were tested at 11-14, 18-22, 28-32 and 34 weeks onwards of gestation. Preeclampsia was main pregnancy outcome.

resultsWomen were divided based on their BP in early pregnancy: normal (n=750), elevated BP (n=98) and hypertension (n=75). Maternal sFlt-1 levels and sFlt-1/PlGF ratios were higher in hypertensive women throughout pregnancy, but maternal PlGF levels were not significantly lower. Rise in maternal systolic, diastolic BP and MAP at 11-14 weeks were significantly associated with higher sFlt-1/PlGF ratios during pregnancy. A 10 mm Hg increase in MAP was associated with a 5.6-fold increase in risk of preterm preeclampsia and a 3.3-fold increase in risk of term preeclampsia, respectively.

conclusionWomen with elevated BP in early pregnancy already had a higher sFlt-1/PlGF ratio in early gestation and throughout pregnancy, and an increased risk of preeclampsia. In contrast, PlGF levels in these women remained normal.

Indexed as

Blood PressureAdultAsian PeopleBiomarkersCohort StudiesFemaleHumansHypertensionLongitudinal StudiesPlacenta Growth FactorPre-EclampsiaPregnancyPregnancy Complications, CardiovascularPregnancy Trimester, FirstRisk AssessmentSingaporeBiomarkersFLT1 protein, humanPlacenta Growth FactorVascular Endothelial Growth Factor Receptor-1blood pressureplacental growth factorpreeclampsiasoluble fms-like tyrosine kinase 1

Identifiers

PMID31791965
PMCPMC6924722
OpenAlexW2990433739

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.