Evidence map›Paper›PMID 31095302›Full record

ArticleThe Journal of clinical endocrinology and metabolism2019

A Prospective Study of Early Pregnancy Essential Metal(loid)s and Glucose Levels Late in the Second Trimester.

Yinnan Zheng, Cuilin Zhang, Marc Weisskopf, Paige L Williams, Patrick J Parsons, Christopher D Palmer, Germaine M Buck Louis, Tamarra James-Todd

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in The Journal of clinical endocrinology and metabolism, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.6field-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

20 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. Article
  3. Copper homeostasis and pregnancy complications: a comprehensive review.Journal of assisted reproduction and genetics · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. 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

8 authors at 4 institutions in 1 country.

Yinnan ZhengDepartment of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts.
Cuilin ZhangDivision of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland.
Marc WeisskopfDepartment of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts.
Paige L WilliamsDepartment of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts.
Patrick J ParsonsWadsworth Center, New York State Department of Health, Albany, New York.
Christopher D PalmerWadsworth Center, New York State Department of Health, Albany, New York.
Germaine M Buck LouisDean's Office, George Mason University, Fairfax, Virginia.
Tamarra James-ToddDepartment of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts.
Harvard University · USNew York State Department of Health · USGeorge Mason University · USNational Institutes of Health · US

Funding

Translational Research Support CoreP30ES000002 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SUSAN A KORRICK · 1985 to 2026
$44.6M
Phthalates, Gestational Diabetes, and Markers of Type 2 Diabetes Risk in WomenR01ES026166 · NIEHS · HARVARD SCHOOL OF PUBLIC HEALTH · PI JAMES-TODD, TAMARRA M · 2016 to 2021
$2.9M
NICHD NIH HHS HHSN275200800002CNICHD NIH HHS HHSN275200800002INICHD NIH HHS HHSN275200800003CNICHD NIH HHS HHSN275200800003INICHD NIH HHS HHSN275200800012CNICHD NIH HHS HHSN275200800013CNICHD NIH HHS HHSN275200800014CNICHD NIH HHS HHSN275200800028CNICHD NIH HHS HHSN275201000001GNICHD NIH HHS HHSN275201000001ZNICHD NIH HHS HHSN275201000009CNIEHS NIH HHS P30 ES000002NIEHS NIH HHS R01 ES026166
6 · The paper itself

Abstract

contextStudies suggest many essential trace metal(loid)s are involved in glucose metabolism, but the associations among pregnant women are unclear.

objectiveTo assess associations between early pregnancy plasma zinc, selenium, copper, and molybdenum levels and blood glucose levels later in the second trimester.

designThe Eunice Kennedy Shriver National Institute of Child Health and Human Development Fetal Growth Studies‒Singleton Cohort is a prospective cohort study conducted between July 2009 and January 2013.

settingTwelve academic research hospitals in the United States. PATIENTS: A total of 1857 multiracial, nonobese, healthy women.

main outcome measureBlood glucose levels from 1-hour 50-g gestational load test (GLT) at 24 to 28 weeks of gestation.

resultsHigher concentrations of first-trimester copper were associated with higher glucose levels from the GLT (i.e., every 50% increase in copper concentration was related to 4.9 mg/dL higher glucose level; 95% CI: 2.2, 7.5 mg/dL) adjusted for maternal sociodemographic characteristics and reproductive history. In contrast, every 50% increase in molybdenum concentration was associated with 1.2 mg/dL lower mean glucose level (95% CI: -2.3, -0.1 mg/dL). The magnitude of these associations was greater at the upper tails of glucose level distribution based on quantile regressions of the 10th, 50th, and 90th percentiles.

conclusionsHigher copper and lower molybdenum concentrations could increase the risk of glucose dysregulation during pregnancy, with women at higher risk of gestational diabetes mellitus potentially affected to a greater extent. Further work is needed to understand the mechanisms involved with early pregnancy essential metal(loid)s to inform clinical diagnosis and prevention of glucose intolerance during pregnancy.

Indexed as

Pregnancy OutcomePregnancy Trimester, SecondAdultBiomarkersBlood GlucoseCohort StudiesCopperDatabases, FactualDiabetes, GestationalFemaleFollow-Up StudiesGestational Weight GainHumansLinear ModelsMaternal AgeMolybdenumBiomarkersBlood GlucoseCopperMolybdenumSeleniumZinc

Identifiers

PMID31095302
PMCPMC6736048
OpenAlexW2945296486

What OpenQuestion holds

Textmetadata
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.