Evidence map›Paper›PMID 29247915›Full record

ArticleEnvironmental research2018

Uncovering neurodevelopmental windows of susceptibility to manganese exposure using dentine microspatial analyses.

Birgit Claus Henn, Christine Austin, Brent A Coull, Lourdes Schnaas, Chris Gennings, Megan K Horton, Mauricio Hernández-Ávila, Howard Hu, Martha Maria Téllez-Rojo, Robert O Wright and 1 more

Open access · greenAbstract read
In one paragraph

Article in Environmental research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
5.3field-weighted citation impact, top 4% 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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 70 citations in OpenAlex.

  1. Pooled it
  2. Teeth as bioarchives of metallic trace elements: a systematic review.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
    Review
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  20. Multiple metals in children's deciduous teeth: results from a community-initiated pilot study.Journal of exposure science & environmental epidemiology · 2022
    Article
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

11 authors at 6 institutions in 3 countries.

Birgit Claus HennDepartment of Environmental Health, Boston University School of Public Health, Boston, MA, USA.
Christine AustinDepartment of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Brent A CoullDepartment of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Lourdes SchnaasDivision of Research on Community Interventions, National Institute of Perinatology, Mexico City, Mexico.
Chris GenningsDepartment of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Megan K HortonDepartment of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Mauricio Hernández-ÁvilaCenter for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico.
Howard HuUniversity of Toronto, Dalla Lana School of Public Health, Toronto, Ontario, Canada.
Martha Maria Téllez-RojoCenter for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico.
Robert O WrightDepartment of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Manish AroraDepartment of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Icahn School of Medicine at Mount Sinai · USInstituto Nacional de Salud Pública · MXBoston University · USHarvard University · USInstituto Nacional de Perinatología · MXUniversity of Toronto · CA

Funding

Statistical Services and Methods Development ResourceU2CES026555 · NIEHS · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI GENNINGS, CHRIS · 2015 to 2025
$26.4M
The Mount Sinai Transdisciplinary Center on Early Environmental ExposuresP30ES023515 · NIEHS · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI Robert O Wright · 2014 to 2026
$21.3M
Organic-metal mixtures and neurodevelopmentR01ES026033 · NIEHS · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI Manish Arora, Robert O Wright · 2016 to 2026
$6.1M
Longitudinal study of metal mixtures and the developmental origins of adolescent risk-takingR01ES028927 · NIEHS · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI Megan K Horton · 2018 to 2026
$5.3M
Reconstructing fetal toxicant exposure and homeostatic disruptionsDP2ES025453 · NIEHS · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI ARORA, MANISH · 2014 to 2019
$2.6M
The Programming Research in Obesity, GRowth, Environment and Social Stress (PROGRESS) CohortR24ES028522 · NIEHS · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI Megan K Horton, Maria Jose Rosa · 2017 to 2026
$1.8M
Early Life Environmental Toxicant Exposure and Oral HealthR00ES019597 · NIEHS · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI ARORA, MANISH · 2013 to 2015
$747k
Metal mixtures, children's cognition, and sensitive developmental windowsR00ES022986 · NIEHS · BOSTON UNIVERSITY MEDICAL CAMPUS · PI CLAUS HENN, BIRGIT GUNHILD · 2015 to 2017
$747k
NIEHS NIH HHS DP2 ES025453NIEHS NIH HHS P30 ES023515NIEHS NIH HHS R00 ES019597NIEHS NIH HHS R00 ES022986NIEHS NIH HHS R01 ES026033NIEHS NIH HHS R01 ES028927NIEHS NIH HHS R24 ES028522NIEHS NIH HHS U2C ES026555
6 · The paper itself

Abstract

backgroundAssociations between manganese (Mn) and neurodevelopment may depend on dose and exposure timing, but most studies cannot measure exposure variability over time well.

objectiveWe apply temporally informative tooth-matrix biomarkers to uncover windows of susceptibility in early life when Mn is associated with visual motor ability in childhood. We also explore effect modification by lead (Pb) and child sex.

methodsParticipants were drawn from the ELEMENT (Early Life Exposures in MExico and NeuroToxicology) longitudinal birth cohort studies. We reconstructed dose and timing of prenatal and early postnatal Mn and Pb exposures for 138 children by analyzing deciduous teeth using laser ablation-inductively coupled plasma-mass spectrometry. Neurodevelopment was assessed between 6 and 16 years of age using the Wide Range Assessment of Visual Motor Abilities (WRAVMA). Mn associations with total WRAVMA scores and subscales were estimated with multivariable generalized additive mixed models. We examined Mn interactions with Pb and child sex in stratified models.

resultsLevels of dentine Mn were highest in the second trimester and declined steeply over the prenatal period, with a slower rate of decline after birth. Mn was positively associated with visual spatial and total WRAVMA scores in the second trimester, among children with lower (< median) tooth Pb levels: one standard deviation (SD) increase in ln-transformed dentine Mn at 150 days before birth was associated with a 0.15 [95% CI: 0.04, 0.26] SD increase in total score. This positive association was not observed at high Pb levels. In contrast to the prenatal period, significant negative associations were found in the postnatal period from ~ 6 to 12 months of age, among boys only: one SD increase in ln-transformed dentine Mn was associated with a 0.11 [95% CI: - 0.001, - 0.22] to 0.16 [95% CI: - 0.04, - 0.28] SD decrease in visual spatial score.

conclusionsUsing tooth-matrix biomarkers with fine scale temporal profiles of exposure, we found discrete developmental windows in which Mn was associated with visual-spatial abilities. Our results suggest that Mn associations are driven in large part by exposure timing, with beneficial effects found for prenatal levels and toxic effects found for postnatal levels.

Indexed as

DentinEnvironmental ExposureManganeseAdolescentBiomarkersChildChild, PreschoolFemaleHumansInfant, NewbornMaleMexicoPregnancyTooth, DeciduousBiomarkersManganeseChildrenLeadManganeseNeurodevelopmentTeethTooth matrix biomarkersVisual motor abilityWindows of susceptibility

Identifiers

PMID29247915
PMCPMC5965684
OpenAlexW2775869111

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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.