Evidence map›Paper›PMID 31174461›Full record

ArticleEnvironmental health and preventive medicine2019

Associations between metal concentrations in whole blood and placenta previa and placenta accreta: the Japan Environment and Children's Study (JECS).

Mayumi Tsuji, Eiji Shibata, David J Askew, Seiichi Morokuma, Yukiyo Aiko, Ayako Senju, Shunsuke Araki, Masafumi Sanefuji, Yasuhiro Ishihara, Rie Tanaka and 3 more

Abstract read
In one paragraph

Article in Environmental health and preventive medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

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

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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

13 authors.

Mayumi TsujiDepartment of Environmental Health, University of Occupational and Environmental Health, Kitakyushu, Japan. tsuji@med.uoeh-u.ac.jp.
Eiji ShibataDepartment of Obstetrics and Gynecology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
David J AskewDepartment of Obstetrics and Gynecology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
Seiichi MorokumaResearch Center for Environmental and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan.
Yukiyo AikoDepartment of Obstetrics and Gynecology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
Ayako SenjuJapan Environment and Children's Study, University of Occupational and Environmental Health Subunit Center, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Shunsuke ArakiDepartment of Pediatrics, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
Masafumi SanefujiResearch Center for Environmental and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan.
Yasuhiro IshiharaLaboratory of Molecular Brain Science, Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Japan.
Rie TanakaDepartment of Environmental Health, University of Occupational and Environmental Health, Kitakyushu, Japan.
Koichi KusuharaJapan Environment and Children's Study, University of Occupational and Environmental Health Subunit Center, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Toshihiro KawamotoDepartment of Environmental Health, University of Occupational and Environmental Health, Kitakyushu, Japan.
Japan Environment and Children’s Study Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPlacenta previa and placenta accreta associate with high morbidity and mortality for both mothers and fetus. Metal exposure may have relationships with placenta previa and placenta accreta. This study analyzed the associations between maternal metal (cadmium [Cd], lead [Pb], mercury [Hg], selenium [Se], and manganese [Mn]) concentrations and placenta previa and placenta accreta.

methodsWe recruited 17,414 women with singleton pregnancies. Data from a self-administered questionnaire regarding the first trimester and medical records after delivery were analyzed. Maternal blood samples were collected to measure metal concentrations. The subjects were classified into four quartiles (Q1, Q2, Q3, and Q4) according to metal concentrations.

resultsThe odds ratio for placenta previa was significantly higher among subjects with Q4 Cd than those with Q1 Cd. The odds ratio for placenta previa was significantly higher for subjects with Q2 Pb than those with Q1 Pb.

conclusionParticipants with placenta previa had higher Cd concentrations. However, this study was cross-sectional and lacked important information related to Cd concentration, such as detailed smoking habits and sources of Cd intake. In addition, the subjects in this study comprised ordinary pregnant Japanese women, and it was impossible to observe the relationship between a wide range of Cd exposure and placenta previa. Therefore, epidemiological and experimental studies are warranted to verify the relationship between Cd exposure and pregnancy abnormalities.

Indexed as

AdultCross-Sectional StudiesFemaleHumansJapanMetals, HeavyPlacenta AccretaPlacenta PreviaPregnancySeleniumMetals, HeavySeleniumMetal concentrationPlacenta accretaPlacenta previaPregnancy

Identifiers

PMID31174461
PMCPMC6556030

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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.