Evidence map›Paper›PMID 22332040›Full record

ReviewAdvances in nutrition (Bethesda, Md.)2011

The role of iron in learning and memory.

Stephanie J B Fretham, Erik S Carlson, Michael K Georgieff

Open access · greenAbstract readReview
In one paragraph

Review in Advances in nutrition (Bethesda, Md.), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed, 3 pooled it
5.6field-weighted citation impact, top 4% 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

100 citing papers in PubMed, 3 syntheses or guidelines pooled it, 237 citations in OpenAlex.

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40 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

Stephanie J B FrethamDepartment of Pediatrics Neonatology Division, University of Minnesota, Minneapolis, MN 55455, USA.
Erik S Carlson
Michael K Georgieff
University of Minnesota · US

Funding

STATISTICAL COREP01HD039386 · NICHD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LOZOFF, BETSY · 2001 to 2011
$14.0M
NEWBORN IRON DEFICIENCYR01HD029421 · NICHD · UNIVERSITY OF MINNESOTA TWIN CITIES · PI GEORGIEFF, MICHAEL K. · 2000 to 2015
$4.4M
A Genetic Model of Perinatal Hippocampal Iron DeficiencyR21HD054490 · NICHD · UNIVERSITY OF MINNESOTA · PI GEORGIEFF, MICHAEL K. · 2007 to 2009
$424k
The Effects of Early Iron Deficiency on mTOR SignalingF31NS063667 · NINDS · UNIVERSITY OF MINNESOTA · PI FRETHAM, STEPHANIE JB · 2008 to 2010
$65k
A Genetic Model of Perinatal Iron DeficiencyF31NS047876 · NINDS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI CARLSON, ERIK S · 2005 to 2006
$60k
NICHD NIH HHS P01 HD039386NICHD NIH HHS R01 HD029421NICHD NIH HHS R01 HD29421NICHD NIH HHS R21 HD054490NINDS NIH HHS F31 NS047876NINDS NIH HHS F31 NS063667
6 · The paper itself

Abstract

Iron deficiency (ID) is the most common nutrient deficiency, affecting 2 billion people and 30% of pregnant women and their offspring. Early life ID affects at least 3 major neurobehavioral domains, including speed of processing, affect, and learning and memory, the latter being particularly prominent. The learning and memory deficits occur while the infants are iron deficient and persist despite iron repletion. The neural mechanisms underlying the short- and long-term deficits are being elucidated. Early ID alters the transcriptome, metabolome, structure, intracellular signaling pathways, and electrophysiology of the developing hippocampus, the brain region responsible for recognition learning and memory. Until recently, it was unclear whether these effects are directly due to a lack of iron interacting with important transcriptional, translational, or post-translational processes or to indirect effects such as hypoxia due to anemia or stress. Nonanemic genetic mouse models generated by conditionally altering expression of iron transport proteins specifically in hippocampal neurons in late gestation have led to a greater understanding of iron's role in learning and memory. The learning deficits in adulthood likely result from interactions between direct and indirect effects that contribute to abnormal hippocampal structure and plasticity.

Indexed as

Iron DeficienciesAdolescentAdultAnimalsBrain-Derived Neurotrophic FactorChildChild, PreschoolFemaleGene ExpressionHippocampusHumansHypoxia-Inducible Factor 1, alpha SubunitInfantInfant, NewbornIron, DietaryLearningBrain-Derived Neurotrophic FactorHypoxia-Inducible Factor 1, alpha SubunitIron, DietaryTOR Serine-Threonine KinasesTrace Elements

Identifiers

PMID22332040
PMCPMC3065765
OpenAlexW2097509137

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.