Evidence map›Paper›PMID 26115160›Full record

ArticleEnvironmental health perspectives2016

Cord Blood Methylmercury and Fetal Growth Outcomes in Baltimore Newborns: Potential Confounding and Effect Modification by Omega-3 Fatty Acids, Selenium, and Sex.

Ellen M Wells, Julie B Herbstman, Yu Hong Lin, Jeffery Jarrett, Carl P Verdon, Cynthia Ward, Kathleen L Caldwell, Joseph R Hibbeln, Frank R Witter, Rolf U Halden and 1 more

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
3.7field-weighted citation impact, top 7% 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

19 citing papers in PubMed, 2 syntheses or guidelines pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Mercury and Prenatal Growth: A Systematic Review.International journal of environmental research and public health · 2021
    Pooled it
  3. Trial
  4. Article
  5. Review
  6. 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
  7. Article
  8. Trimester-specific prenatal heavy metal exposures and sex-specific postpartum size and growth.Journal of exposure science & environmental epidemiology · 2023
    Article
  9. Environmental health perspectives · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Observational
  15. Article
  16. Article
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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

11 authors at 7 institutions in 2 countries.

Ellen M WellsSchool of Health Sciences, Purdue University, West Lafayette, Indiana, USA.
Julie B Herbstman
Yu Hong Lin
Jeffery Jarrett
Carl P Verdon
Cynthia Ward
Kathleen L Caldwell
Joseph R Hibbeln
Frank R Witter
Rolf U Halden
Lynn R Goldman
Centers for Disease Control and Prevention · USNational Institutes of Health · USArizona State University · USCenter for Children · USHampton University · USJohns Hopkins University · USMilken Institute · US

Funding

True Metal fac coreP30ES009089 · NIEHS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI Ami R Zota · 1998 to 2026
$44.7M
Essential Fatty Acids In Psychiatric DisordersZIAAA000115 · NIAAA · NATIONAL INSTITUTE ON ALCOHOL ABUSE AND ALCOHOLISM · PI HIBBELN, JOSEPH · 2009 to 2020
$7.8M
Novel Approaches to Studying the Situ Bioremediation of Complex MixturesR01ES015445 · NIEHS · JOHNS HOPKINS UNIVERSITY · PI HALDEN, ROLF U · 2006 to 2009
$1.0M
NIEHS NIH HHS 1R01ES015445NIEHS NIH HHS P30 ES009089NIEHS NIH HHS R01 ES015445
6 · The paper itself

Abstract

backgroundMethylmercury (MeHg) may affect fetal growth; however, prior research often lacked assessment of mercury speciation, confounders, and interactions.

objectiveOur objective was to assess the relationship between MeHg and fetal growth as well as the potential for confounding or interaction of this relationship from speciated mercury, fatty acids, selenium, and sex.

methodsThis cross-sectional study includes 271 singletons born in Baltimore, Maryland, 2004-2005. Umbilical cord blood was analyzed for speciated mercury, serum omega-3 highly unsaturated fatty acids (n-3 HUFAs), and selenium. Multivariable linear regression models controlled for gestational age, birth weight, maternal age, parity, prepregnancy body mass index, smoking, hypertension, diabetes, selenium, n-3 HUFAs, and inorganic mercury (IHg).

resultsGeometric mean cord blood MeHg was 0.94 μg/L (95% CI: 0.84, 1.07). In adjusted models for ponderal index, βln(MeHg) = -0.045 (g/cm(3)) × 100 (95% CI: -0.084, -0.005). There was no evidence of a MeHg × sex interaction with ponderal index. Contrastingly, there was evidence of a MeHg × n-3 HUFAs interaction with birth length [among low n-3 HUFAs, βln(MeHg) = 0.40 cm, 95% CI: -0.02, 0.81; among high n-3 HUFAs, βln(MeHg) = -0.15, 95% CI: -0.54, 0.25; p-interaction = 0.048] and head circumference [among low n-3 HUFAs, βln(MeHg) = 0.01 cm, 95% CI: -0.27, 0.29; among high n-3 HUFAs, βln(MeHg) = -0.37, 95% CI: -0.63, -0.10; p-interaction = 0.042]. The association of MeHg with birth weight and ponderal index was affected by n-3 HUFAs, selenium, and IHg. For birth weight, βln(MeHg) without these variables was -16.8 g (95% CI: -75.0, 41.3) versus -29.7 (95% CI: -93.9, 34.6) with all covariates. Corresponding values for ponderal index were -0.030 (g/cm(3)) × 100 (95% CI: -0.065, 0.005) and -0.045 (95% CI: -0.084, -0005).

conclusionWe observed an association of increased MeHg with decreased ponderal index. There is evidence for interaction between MeHg and n-3 HUFAs; infants with higher MeHg and n-3 HUFAs had lower birth length and head circumference. These results should be verified with additional studies.

Indexed as

BaltimoreBirth WeightBody SizeCephalometryCross-Sectional StudiesFatty Acids, Omega-3FemaleFetal BloodFetal DevelopmentHumansInfant, NewbornMaleMethylmercury CompoundsPregnancySeleniumSex FactorsFatty Acids, Omega-3Methylmercury CompoundsSelenium

Identifiers

PMID26115160
PMCPMC4786979
OpenAlexW2326600691

What OpenQuestion holds

Textmetadata
LicenceCC0
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.