Evidence map›Paper›PMID 28985223›Full record

ArticlePloS one2017

Heavy metals exposure levels and their correlation with different clinical forms of fetal growth restriction.

Sally Sabra, Ebba Malmqvist, Alicia Saborit, Eduard Gratacós, Maria Dolores Gomez Roig

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04394611 (Analysis of Some Heavy Metals and Some Vitamins Levels in Maternal Samples, Fetal Samples and Breast Milk for Fetal Growth Restriction.), which is not on this map. Cited by 43 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 3 pooled it
4.7field-weighted citation impact, top 5% 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.

NCT04394611 unknown statusnot on this mapstarted 2020, after this paper: background citation

Analysis of Some Heavy Metals and Some Vitamins Levels in Maternal Samples, Fetal Samples and Breast Milk for Fetal Growth Restriction.

TypeobservationalSponsorCengiz Gokcek Women's and Children's HospitalRan2020 to 2021Enrolled55ConditionsFetal Growth RestrictionArmsObstetric ultrasound- doppler examination
3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 3 syntheses or guidelines pooled it, 105 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Lead exposure at the feto-maternal interface: a cause for concern for fetal membrane trophoblasts.Toxicological sciences : an official journal of the Society of Toxicology · 2025
    Article
  11. Article
  12. Current understanding of essential trace elements in intrahepatic cholestasis of pregnancy.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2024
    Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. The Placental Function Beyond Pregnancy: Insights from Latin America.Advances in experimental medicine and biology · 2023
    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

5 authors at 2 institutions in 2 countries.

Sally SabraBCNatal | Barcelona Center for Maternal Fetal and Neonatal Medicine (Hospital Sant Joan de Déu and Hospital Clínic), University of Barcelona, Barcelona, Spain.
Ebba MalmqvistOccupational and Environmental Medicine, Lund University, Lund, Sweden.
Alicia SaboritBCNatal | Barcelona Center for Maternal Fetal and Neonatal Medicine (Hospital Sant Joan de Déu and Hospital Clínic), University of Barcelona, Barcelona, Spain.
Eduard GratacósBCNatal | Barcelona Center for Maternal Fetal and Neonatal Medicine (Hospital Sant Joan de Déu and Hospital Clínic), University of Barcelona, Barcelona, Spain.
Maria Dolores Gomez RoigBCNatal | Barcelona Center for Maternal Fetal and Neonatal Medicine (Hospital Sant Joan de Déu and Hospital Clínic), University of Barcelona, Barcelona, Spain.ORCID http://orcid.org/0000-0003-2329-1851
Hospital Sant Joan de Déu Barcelona · ESLund University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrenatal heavy metals exposure has shown a negative impact on birth weight. However, their influence on different clinical forms of fetal smallness was never assessed.

objectivesTo investigate whether there is a differential association between heavy metals exposure and fetal smallness subclassification into intrauterine growth restriction (IUGR) and small-for-gestational age (SGA).

methodIn this prospective case-control study, we included 178 mother-infant pairs; 96 of appropriate for gestational age (AGA) and 82 of small fetuses diagnosed in third trimester. The small ones were further subclassified into IUGR, n = 49 and SGA, n = 33. Cadmium (Cd), mercury (Hg), lead (Pb), arsenic (As) and zinc (Zn) levels were measured in the maternal and cord serum, and in the placentas of the three groups.

resultsMaternal serum level of Cd (p<0.001) was higher in the small fetuses compared to AGA. Fetal serum level of Cd (p<0.001) was increased in the small fetuses compared to AGA. Fetal serum level of Hg (p<0.05) showed an increase in SGA compared to both IUGR and AGA. Fetal serum level of Zn was increased in the AGA (p < 0.001) compared to each of the small fetuses groups. Only differences in the levels between the small fetuses' subgroups were detected in the fetal serum levels of Cd and Hg. Fetal birth weight was negatively correlated with the fetal serum level of Cd (p < 0.001). No differences in the placental heavy metal levels were observed among the groups.

conclusionFetal serum levels of Cd showed differential correlation between small fetuses' clinical subclassification, which together with the increased Cd levels in both maternal and fetal serum of the small fetuses reinforce the negative influence of heavy metals on birth weight. These findings provide more opportunities to verify the role of heavy metals exposure in relation to small fetuses' subclassification.

Indexed as

Maternal ExposureAdultArsenicCadmiumCase-Control StudiesFemaleFetal Growth RetardationHumansInfant, NewbornInfant, Small for Gestational AgeLeadMaleMercuryMetals, HeavyPregnancyProspective StudiesArsenicCadmiumLeadMercuryMetals, HeavyZinc

Identifiers

PMID28985223
PMCPMC5630121
OpenAlexW2763385526

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.