Evidence map›Paper›PMID 27497749›Full record

ArticleReproductive toxicology (Elmsford, N.Y.)2017

Children's white blood cell counts in relation to developmental exposures to methylmercury and persistent organic pollutants.

Y Oulhote, Z Shamim, K Kielsen, P Weihe, P Grandjean, L P Ryder, C Heilmann

Open access · greenAbstract read
In one paragraph

Article in Reproductive toxicology (Elmsford, N.Y.), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.2field-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

24 citing papers in PubMed, 57 citations in OpenAlex.

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  8. Guardians under Siege: Exploring Pollution's Effects on Human Immunity.International journal of molecular sciences · 2024
    Review
  9. Article
  10. Consideration of pathways for immunotoxicity of per- and polyfluoroalkyl substances (PFAS).Environmental health : a global access science source · 2023
    Review
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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

7 authors at 3 institutions in 3 countries.

Y OulhoteDepartment of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Z ShamimInstitute for Inflammation Research, Department of Rheumatology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
K KielsenInstitute for Inflammation Research, Department of Rheumatology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
P WeiheDepartment of Occupational Medicine and Public Health, Faroese Hospital System, Tórshavn, Faroe Islands.
P GrandjeanDepartment of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Environmental Medicine, University of Southern Denmark, Odense, Denmark. Electronic address: pgrand@sdu.dk.
L P RyderDepartment of Clinical Immunology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
C HeilmannDepartment of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
Copenhagen University Hospital · DKHarvard University · USUniversity of the Faroe Islands · FO

Funding

Epidemiology of Immunotoxicant Exposure in ChildrenR01ES012199 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI GRANDJEAN, PHILIPPE ADAM · 2004 to 2015
$3.4M
NIEHS NIH HHS R01 ES012199
6 · The paper itself

Abstract

backgroundTo explore possible markers of developmental immunotoxicity, we prospectively examined 56 children to determine associations between exposures to methylmercury and persistent organic pollutants since birth and the comprehensive differential counts of white blood cells (WBC) at age 5 years. MATERIALS AND

methodsExtended differential count included: neutrophils, eosinophils, basophils, lymphocytes (includingT cells, NK cells, and B cells), and monocytes. Organochlorine compounds (OCs) including polychlorinated biphenyls (PCBs) and pesticides, five perfluoroalkyl substances (PFASs), and total mercury (Hg) were measured in maternal (n=56) and children's blood at 18 months (n=42) and 5 years (n=54). We constructed latent functions for exposures at three different ages using factor analyses and applied structural equation models adjusted for covariates.

resultsPrenatal mercury exposure was associated with depleted total WBC, especially for lymphocytes, where a one standard deviation (SD) increase in the exposure was associated with a decrease by 23% SD (95% CI: -43, -4) in the cell count. Prenatal exposure to OCs was marginally associated with decreases in neutrophil counts. In contrast, the 5-year PFASs concentrations were associated with higher basophil counts (B=46% SD, 95% CI: 13, 79). Significantly reduced subpopulations of lymphocytes such as B cells, CD4-positive T helper cells and CD4 positive recent thymic emigrants may suggest cellular immunity effects and dysregulation of T-cell mediated immunity.

conclusionDevelopmental exposure to environmental immunotoxicants appears to have different impacts on WBC counts in childhood.

Indexed as

Child, PreschoolDenmarkEnvironmental PollutantsFemaleHairHumansInfantLeukocyte CountLeukocytesMaternal ExposureMethylmercury CompoundsPregnancyPrenatal Exposure Delayed EffectsProspective StudiesEnvironmental PollutantsMethylmercury CompoundsDevelopmental exposure delayed effectsImmunotoxicityMercuryPerfluoroalkyl substancesPolychlorinated biphenylsWhite blood cell count

Identifiers

PMID27497749
PMCPMC5292093
OpenAlexW2501596021

What OpenQuestion holds

Textmetadata
LicenceTDM
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.