Evidence map›Paper›PMID 34188052›Full record

ArticleNature communications2021

Iron-dependent apoptosis causes embryotoxicity in inflamed and obese pregnancy.

Allison L Fisher, Veena Sangkhae, Kamila Balušíková, Nicolaos J Palaskas, Tomas Ganz, Elizabeta Nemeth

Abstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–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

17 citing papers in PubMed.

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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

6 authors.

Allison L FisherMolecular, Cellular & Integrative Physiology Graduate Program, University of California, Los Angeles, Los Angeles, CA, USA.ORCID 0000-0002-9393-2442
Veena SangkhaeCenter for Iron Disorders, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.
Kamila BalušíkováDepartment of Biochemistry, Cell and Molecular Biology & Center for Research of Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic.ORCID 0000-0002-0471-5877
Nicolaos J PalaskasCenter for Iron Disorders, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.ORCID 0000-0003-0783-0683
Tomas GanzCenter for Iron Disorders, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.ORCID 0000-0002-2830-5469
Elizabeta NemethCenter for Iron Disorders, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA. ENemeth@mednet.ucla.edu.ORCID 0000-0002-3477-2397

Funding

UCLA Clinical Translational Science InstituteUL1TR001881 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI ARLEEN F. BROWN, ARASH NAEIM · 2016 to 2026
$118.1M
UCLA Clinical and Translational Science InstituteUL1TR000124 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI DUBINETT, STEVEN M. · 2012 to 2015
$57.0M
Training in Molecular, Cellular &Integrative PhysiologyT32GM065823 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI TIDBALL, JAMES G · 2003 to 2017
$2.1M
Iron physiology and pathology in pregnancyR01HD096863 · NICHD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NEMETH, ELIZABETA · 2019 to 2023
$2.1M
Iron and Pregnancy: Regulatory Mechanisms and Adverse OutcomesK01DK127004 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI SANGKHAE, VEENA · 2021 to 2025
$761k
MECHANISM OF ADVERSE INTERACTION BETWEEN MATERNAL IRON EXCESS AND INFLAMMATION DURING PREGNANCYF31HD097931 · NICHD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI FISHER, ALLISON LYNN · 2019 to 2020
$53k
NCATS NIH HHS UL1 TR000124NCATS NIH HHS UL1 TR001881NICHD NIH HHS F31 HD097931NICHD NIH HHS R01 HD096863NIDDK NIH HHS K01 DK127004NIGMS NIH HHS T32 GM065823
6 · The paper itself

Abstract

Iron is essential for a healthy pregnancy, and iron supplementation is nearly universally recommended, regardless of maternal iron status. A signal of potential harm is the U-shaped association between maternal ferritin, a marker of iron stores, and risk of adverse pregnancy outcomes. However, ferritin is also induced by inflammation and may overestimate iron stores during inflammation or infection. In this study, we use mouse models to determine whether maternal iron loading, inflammation, or their interaction cause poor pregnancy outcomes. Only maternal exposure to both iron excess and inflammation, but not either condition alone, causes embryo malformations and demise. Maternal iron excess potentiates embryo injury during both LPS-induced acute inflammation and obesity-induced chronic mild inflammation. The adverse interaction depends on TNFα signaling, causes apoptosis of placental and embryo endothelium, and is prevented by anti-TNFα or antioxidant treatment. Our findings raise important questions about the safety of indiscriminate iron supplementation during pregnancy.

Indexed as

AnimalsApoptosisCells, CulturedEmbryo, MammalianFemaleFerritinsHepcidinsHumansHuman Umbilical Vein Endothelial CellsIronMiceMice, Inbred C57BLMice, KnockoutObesityPlacentaPregnancyFerritinsHepcidinsIronTumor Necrosis Factor-alpha

Identifiers

PMID34188052
PMCPMC8242011

What OpenQuestion holds

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LicenceCC BY
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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.