Evidence map›Paper›PMID 39703190›Full record

ReviewJournal of toxicology and environmental health. Part B, Critical reviews2025

Which prenatal biomarker is most appropriate for methylmercury dose-response for neurodevelopmental effects?

Leonid Kopylev, Michael Dzierlenga, Yu-Sheng Lin, Rebecca Nachman, Elizabeth Radke, Hongyu Ru, Deborah Segal

Abstract readReview
In one paragraph

Review in Journal of toxicology and environmental health. Part B, Critical reviews, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Through the Eye: Retinal Changes of Prenatal Mercury Exposure in Grassy Narrows First Nation, Canada.International journal of environmental research and public health · 2025
    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

7 authors.

Leonid KopylevCenter for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, Washington, USA.
Michael DzierlengaCenter for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, Washington, USA.
Yu-Sheng LinCenter for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, Washington, USA.
Rebecca NachmanCenter for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, Washington, USA.
Elizabeth RadkeCenter for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, Washington, USA.
Hongyu RuCenter for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, Washington, USA.
Deborah SegalCenter for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, Washington, USA.

Funding

Intramural EPA EPA999999
6 · The paper itself

Abstract

Developmental neurotoxicity (DNT) is a well-established hazard attributed to methylmercury (MeHg) exposure. This evidence is based primarily upon includes studies that measured biomarkers of MeHg exposure in samples of maternal hair and blood, and cord blood. The aim of this review was to investigate which of these prenatal biomarkers is most appropriate for quantifying the DNT effects attributed to MeHg. A comprehensive literature search covered MeHg dose-response literature published 1998-2022. Studies were evaluated for risk of bias and study sensitivity using IRIS approach. Quantitative results of investigations were extracted and statistically compared. Seven studies were identified that measured both maternal hair and cord blood Hg levels. In these investigations, several DNT umbrella tests and their sub-tests results were modeled. Cord blood MeHg was more sensitive, producing larger estimates of MeHg potency, in most of the comparisons (91%) with maternal hair MeHg estimates for the same sub-tests in the same study. When comparing results from cord blood Hg to maternal hair Hg there was a 75% increase in sensitivity (range: 4-583%). In the two domains where results for maternal hair Hg were more sensitive, the rise was only 18% (Range: 7-29%). There were limited data (two studies) that compared maternal blood and maternal hair biomarkers (maternal blood Hg was more sensitive (mean 320% and range 43-855%) and cord blood biomarkers (maternal blood Hg was more sensitive by approximately 30%). Maternal hair Hg remains an appropriate biomarker for exposure monitoring in many populations, but these data suggest that cord blood Hg is more appropriate for dose-response modeling of MeHg DNT effects.

Indexed as

Environmental PollutantsMaternal ExposureMethylmercury CompoundsPrenatal Exposure Delayed EffectsBiomarkersDose-Response Relationship, DrugFemaleFetal BloodHairHumansPregnancyBiomarkersEnvironmental PollutantsMethylmercury Compoundsbiomarkers of MeHg exposurecord blooddevelopmental neurotoxicityMaternal hair and bloodmethylmercury

Identifiers

PMID39703190
PMCPMC11961308

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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.