SynthesisFrontiers in public health2022
A Global Perspective of Correlation Between Maternal Copper Levels and Preeclampsia in the 21st Century: A Systematic Review and Meta-Analysis.
Synthesis in Frontiers in public health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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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.
The trial behind it
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Cuproptosis: a novel mechanism linking placental metabolic stress to trophoblast injury in preeclampsia.Frontiers in endocrinology · 2026Review
- Exposure to Fine Particulate Matter (PM2.5) and Heavy Metals During the Second Trimester of Pregnancy Increases the Risk of Preeclampsia and Eclampsia: An Analysis of National Health Insurance Claims Data from South Korea.Medicina (Kaunas, Lithuania) · 2025Article
- Pregnancy Metal Mixtures and Blood Pressure and Hypertension in Mid-Life: A Prospective U.S. Cohort Study.Hypertension (Dallas, Tex. : 1979) · 2025Article
- A Review of Dietary and Lifestyle Management of Pre-Eclampsia and Postpartum Eclampsia.Preventive nutrition and food science · 2025Review
- First trimester prenatal metal mixtures, vitamins, and hypertensive disorders of pregnancy in the project viva cohort.Environment international · 2024Article
- An exploratory study on the association of multiple metals in serum with preeclampsia.Frontiers in public health · 2024Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Preeclampsia (PE) is a common multi-system disorder in pregnancy and a major cause of maternal and perinatal morbidity and mortality globally. Copper is a crucial micronutrient for human health. Methods: A systematic review was performed according to Preferred Reporting Item for Systematic Reviews and Meta-analysis (PRISMA) guidelines to synthesize the best available evidence regarding the correlation between maternal copper levels and PE from women with different geographical and economic backgrounds. Results: A total of 34 studies containing 2,471 women with PE and 2,888 healthy pregnant controls across 16 countries were included for research. All studies were systematically reviewed and assessed with the Newcastle-Ottawa Scale (NOS), The Agency of Healthcare for Research and Quality (AHRQ) assessment tools according to the study types. Globally, there was no significant difference in maternal serum copper levels between women with PE and control (Mean difference 5.46, 95% CI -9.63, 20.54). Sub-group analysis from geographical and economic perspectives revealed contrasting results. In conclusion, copper is associated with PE, but the levels of copper leading to increased risk of PE varied across regions and economic development. Conclusions: The deranged maternal copper levels are correlated with risks of PE, but it presents variously across different geographical and economic contexts. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=306536. Identifier: CRD42022306536.
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