Evidence map›Paper›PMID 28110211›Full record

ArticleEnvironmental research2017

Methyl mercury, but not inorganic mercury, associated with higher blood pressure during pregnancy.

Ellen M Wells, Julie B Herbstman, Yu Hong Lin, Joseph R Hibbeln, Rolf U Halden, Frank R Witter, Lynn R Goldman

Open access · greenAbstract readComparative Study
In one paragraph

Article in Environmental research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
2.9field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 40 citations in OpenAlex.

  1. Maternal Mercury Exposure and Hypertensive Disorders of Pregnancy: A Systematic Review.Revista brasileira de ginecologia e obstetricia : revista da Federacao Brasileira das Sociedades de Ginecologia e Obstetricia · 2022
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  14. High Efficiency Mercury Sorption by Dead Biomass ofMaterials (Basel, Switzerland) · 2019
    Article
  15. Co-exposure to environmental endocrine disruptors in the US population.Environmental science and pollution research international · 2019
    Article
  16. Blood total mercury and methylmercury among pregnant mothers in Charleston, South Carolina, USA.Journal of exposure science & environmental epidemiology · 2018
    Article
  17. Mercury-induced Oxidative Stress May Adversely Affect Pregnancy Outcome among Dental Staff: A Cohort Study.The international journal of occupational and environmental medicine · 2018
    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 at 7 institutions in 1 country.

Ellen M WellsSchool of Health Sciences, Purdue University, West Lafayette, IN, USA. Electronic address: wells54@purdue.edu.
Julie B HerbstmanColumbia Center for Children's Environmental Health, Columbia University Mailman School of Public Health, New York, NY, USA.
Yu Hong LinNational Institute of Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA.
Joseph R HibbelnNational Institute of Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA.
Rolf U HaldenCenter for Environmental Security, Biodesign Institute, Arizona State University, Tempe, AZ, USA.
Frank R WitterDepartment of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Lynn R GoldmanMilken Institute School of Public Health, George Washington University, Washington, DC, USA.
Arizona State University · USCenter for Children · USJohns Hopkins University · USMilken Institute · USNational Institute on Alcohol Abuse and Alcoholism · USNational Institutes of Health · USPurdue University West Lafayette · US

Funding

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 R01 ES015445
6 · The paper itself

Abstract

Prior studies addressing associations between mercury and blood pressure have produced inconsistent findings; some of this may result from measuring total instead of speciated mercury. This cross-sectional study of 263 pregnant women assessed total mercury, speciated mercury, selenium, and n-3 polyunsaturated fatty acids in umbilical cord blood and blood pressure during labor and delivery. Models with a) total mercury or b) methyl and inorganic mercury were evaluated. Regression models adjusted for maternal age, race/ethnicity, prepregnancy body mass index, neighborhood income, parity, smoking, n-3 fatty acids and selenium. Geometric mean total, methyl, and inorganic mercury concentrations were 1.40µg/L (95% confidence interval: 1.29, 1.52); 0.95µg/L (0.84, 1.07); and 0.13µg/L (0.10, 0.17), respectively. Elevated systolic BP, diastolic BP, and pulse pressure were found, respectively, in 11.4%, 6.8%, and 19.8% of mothers. In adjusted multivariable models, a one-tertile increase of methyl mercury was associated with 2.83mmHg (0.17, 5.50) higher systolic blood pressure and 2.99mmHg (0.91, 5.08) higher pulse pressure. In the same models, an increase of one tertile of inorganic mercury was associated with -1.18mmHg (-3.72, 1.35) lower systolic blood pressure and -2.51mmHg (-4.49, -0.53) lower pulse pressure. No associations were observed with diastolic pressure. There was a non-significant trend of higher total mercury with higher systolic blood pressure. We observed a significant association of higher methyl mercury with higher systolic and pulse pressure, yet higher inorganic mercury was significantly associated with lower pulse pressure. These results should be confirmed with larger, longitudinal studies.

Indexed as

AdultBaltimoreBlood PressureCross-Sectional StudiesEnvironmental ExposureFatty Acids, Omega-3FemaleFetal BloodHumansHypertensionMercuryMethylmercury CompoundsPregnancyPregnancy Complications, CardiovascularSeleniumFatty Acids, Omega-3MercuryMethylmercury CompoundsSeleniumBlood pressureInorganic mercury compoundsMercuryMethylmercury compoundsPregnancy

Identifiers

PMID28110211
PMCPMC5328834
OpenAlexW2572115232

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.