Evidence map›Paper›PMID 36525933›Full record

ArticlePregnancy hypertension2023

Role of biomarkers (sFlt-1/PlGF) in cases of COVID-19 for distinguishing preeclampsia and guiding clinical management.

Guilherme M Nobrega, Jose P Guida, Juliana M Novaes, Larissa M Solda, Luciana Pietro, Adriana G Luz, Giuliane J Lajos, Carolina C Ribeiro-do-Valle, Renato T Souza, Jose G Cecatti and 3 more

Open access · greenAbstract read
In one paragraph

Article in Pregnancy hypertension, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

10 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Association between coronavirus 2 infection and preeclampsia among unvaccinated women.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2025
    Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Preeclampsia in the Context of COVID-19: Mechanisms, Pathophysiology, and Clinical Outcomes.American journal of reproductive immunology (New York, N.Y. : 1989) · 2024
    Review
  8. Article
  9. Article
  10. Review
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

13 authors at 3 institutions in 2 countries.

Guilherme M NobregaDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Jose P GuidaDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Juliana M NovaesDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Larissa M SoldaDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Luciana PietroDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil; Institute of Health Sciences, Paulista University, Brazil.
Adriana G LuzDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Giuliane J LajosDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Carolina C Ribeiro-do-ValleDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Renato T SouzaDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Jose G CecattiDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Indira U MysorekarDepartment of Medicine, Section of Infectious Diseases, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX 77030, USA.
Tabata Z DiasDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil.
Maria Laura CostaDepartment of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil. Electronic address: mlaura@unicamp.br.
Universidade Estadual de Campinas (UNICAMP) · BRBaylor College of Medicine · USUniversidade Paulista · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo analyze soluble fms-like tyrosine kinase 1 (sFlt-1) and placental growth factors (PlGF) concentrations and their ratio in pregnant and postpartum women with suspected COVID-19, and further investigate conditions associated with an increased ratio (sFlt-1/PlGF > 38), including preeclampsia (PE) and severe acute respiratory syndrome (SARS). STUDY

designThe present study is a secondary analysis of a prospective cohort. Blood samples were collected at time of COVID-19 investigation and the serum measurements of sFlt-1 and PlGF were performed. Clinical background, SARS-CoV-2 infection characteristics, maternal and perinatal outcomes were further analyzed.

main outcome measuresSerum measurements of sFlt-1 and PlGF; obstetrics and clinical outcomes.

resultsA total of 97 SARS-CoV-2 unvaccinated women with suspected infection were considered, 76 were COVID-19 positive cases and 21 COVID-19 negative. Among COVID-19 positive cases, 09 presented with SARS and 11 were diagnosed with PE, of which 6 had SARS-CoV-2 infection in first and second trimester (04 with sFlt-1/PlGF ≥ 38) and 05 with PE and COVID-19 diagnosed at the same time, during third trimester (03 with sFlt-1/PlGF ≥ 38). Five presented with PE with severe features. sFlt-1/PlGF ratio was significantly higher in the COVID-19 positive/PE positive group compared to COVID-19 positive/PE negative group (p-value = 0.005), with no increase in cases complicated by SARS.

conclusionssFlt-1/PlGF ratio could be a useful tool for differential diagnosis and adequate counseling among cases of COVID-19 and PE, especially if severe disease. COVID-19 early in pregnancy could potentially be a risk factor for PE later during gestation.

Indexed as

COVID-19Pre-EclampsiaBiomarkersFemaleHumansPlacentaPlacenta Growth FactorPregnancyProspective StudiesReceptor Protein-Tyrosine KinasesSARS-CoV-2Vascular Endothelial Growth Factor AVascular Endothelial Growth Factor Receptor-1BiomarkersPlacenta Growth FactorReceptor Protein-Tyrosine KinasesVascular Endothelial Growth Factor AVascular Endothelial Growth Factor Receptor-1COVID-19Hypertensive disorders of pregnancyMaternal healthRenin-angiotensin system

Identifiers

PMID36525933
PMCPMC9719935
OpenAlexW4310677074

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.