Evidence map›Paper›PMID 23095980›Full record

ArticlePediatric research2013

Iron supplementation dose for perinatal iron deficiency differentially alters the neurochemistry of the frontal cortex and hippocampus in adult rats.

Raghavendra Rao, Ivan Tkac, Erica L Unger, Kathleen Ennis, Amy Hurst, Timothy Schallert, James Connor, Barbara Felt, Michael K Georgieff

Open access · bronzeAbstract read
In one paragraph

Article in Pediatric research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

30 citing papers in PubMed, 42 citations in OpenAlex.

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  13. [Research advances in the relationship between iron deficiency and neurodevelopment in preterm infants].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2018
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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

9 authors at 5 institutions in 1 country.

Raghavendra RaoDepartment of Pediatrics, Neonatology Division, University of Minnesota, Minneapolis, MN, USA. raghurao@umn.edu
Ivan Tkac
Erica L Unger
Kathleen Ennis
Amy Hurst
Timothy Schallert
James Connor
Barbara Felt
Michael K Georgieff
University of Minnesota · USPennsylvania State University · USUniversity of Michigan–Ann Arbor · USResonance Research (United States) · USThe University of Texas at Austin · US

Funding

ZOOMED FUNCT IMAGING IN HUMAN BRAIN AT 7T W/ SIMULT HIGH SPATIAL &TEMPORAL RESP41RR008079 · NCRR · UNIVERSITY OF MINNESOTA TWIN CITIES · PI UGURBIL, KAMIL · 1993 to 2011
$16.3M
STATISTICAL COREP01HD039386 · NICHD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BEARD, JOHN LAWRENCE · 2001 to 2011
$14.0M
Neuroscience Cores For MR Studies of the BrainP30NS057091 · NINDS · UNIVERSITY OF MINNESOTA · PI UGURBIL, KAMIL · 2006 to 2011
$8.5M
Institutional Center Cores for Advanced NeuroimagingP30NS076408 · NINDS · UNIVERSITY OF MINNESOTA · PI UGURBIL, KAMIL · 2012 to 2020
$4.2M
NCRR NIH HHS P41 RR008079NICHD NIH HHS P01 HD039386NINDS NIH HHS P30 NS057091
6 · The paper itself

Abstract

backgroundLong-term prefrontal cortex (PFC)- and hippocampus-based cognitive deficits are the sequelae of perinatal iron deficiency, despite iron supplementation starting in the newborn period. Whether high-dose iron supplementation prevents these deficits is yet to be determined.

methodsPerinatal iron deficiency was induced in rat pups using a low-iron (3 mg/kg diet) diet during gestation until postnatal day (P)8. Iron was supplemented using a standard (40 mg/kg diet) or a 10-fold higher (400 mg/kg diet) iron-containing diet until P21. PFC and hippocampal neurochemistry was determined using in vivo (1)H nuclear magnetic resonance (NMR) spectroscopy at 9.4 Tesla on P90.

resultsBoth standard and 10-fold higher iron supplementation doses corrected anemia and brain iron deficiency by P21. The neurochemical profile of the PFC in both supplementation groups was comparable with the control group. In the hippocampus, standard-dose iron supplementation resulted in lower concentrations of N-acetylaspartate (NAA) and phosphoethanolamine (PE) and higher concentrations of N-acetylaspartylglutamate (NAAG) and glycerophosphocholine + phosphocholine (GPC + PC). High-dose iron supplementation resulted in lower PE and higher GPC + PC concentrations.

conclusionThe iron supplementation dose for perinatal iron deficiency differentially alters the neurochemical profile of the PFC and hippocampus in adults. The neurochemical changes suggest altered glutamatergic neurotransmission, hypomyelination, and abnormal phospholipid metabolism in the formerly iron-deficient (FID) hippocampus.

Indexed as

Anemia, Iron-DeficiencyAnimalsAspartic AcidCognition DisordersDietary SupplementsDipeptidesEthanolaminesFrontal LobeHippocampusIronMagnetic Resonance SpectroscopyPhosphorylcholineRatsAspartic AcidDipeptidesEthanolaminesIronisospaglumic acidN-acetylaspartatePhosphorylcholinephosphorylethanolamine

Identifiers

PMID23095980
PMCPMC3563322
OpenAlexW2055940388

What OpenQuestion holds

Textmetadata
LicenceTDM
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.