Evidence map›Paper›PMID 27499134›Full record

ArticleNutritional neuroscience2018

Metabolomic analysis of CSF indicates brain metabolic impairment precedes hematological indices of anemia in the iron-deficient infant monkey.

Raghavendra Rao, Kathleen Ennis, Gabriele R Lubach, Eric F Lock, Michael K Georgieff, Christopher L Coe

Open access · greenAbstract read
In one paragraph

Article in Nutritional neuroscience, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

25 citing papers in PubMed, 35 citations in OpenAlex.

  1. Trial
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  6. Bayesian predictive modeling of multi-source multi-way data.Computational statistics & data analysis · 2023
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  8. Inhibition of VDAC1 Rescues AMediators of inflammation · 2023
    Article
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  20. Phosphocreatine Levels in the Left Thalamus Decline during Wakefulness and Increase after a Nap.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
    Article
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 at 2 institutions in 1 country.

Raghavendra Raoa Department of Pediatrics, Division of Neonatology , University of Minnesota , Minneapolis , USA.
Kathleen Ennisa Department of Pediatrics, Division of Neonatology , University of Minnesota , Minneapolis , USA.
Gabriele R Lubachc Harlow Center for Biological Psychology , University of Wisconsin-Madison , USA.
Eric F Lockd Division of Biostatistics , School of Public Health, University of Minnesota , Minneapolis , USA.ORCID http://orcid.org/0000-0003-4663-2356
Michael K Georgieffa Department of Pediatrics, Division of Neonatology , University of Minnesota , Minneapolis , USA.
Christopher L Coec Harlow Center for Biological Psychology , University of Wisconsin-Madison , USA.
University of Minnesota · USUniversity of Wisconsin–Madison · US

Funding

STATISTICAL COREP01HD039386 · NICHD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LOZOFF, BETSY · 2001 to 2011
$14.0M
Novel Medical Food for Treating Infant Anemia and Iron Deficiency in the CNSR01HD080201 · NICHD · UNIVERSITY OF WISCONSIN-MADISON · PI COE, CHRISTOPHER L · 2014 to 2018
$2.1M
Gestational Stress and Impaired Iron Homeostasis in the Young InfantR01HD057064 · NICHD · UNIVERSITY OF WISCONSIN-MADISON · PI COE, CHRISTOPHER L · 2009 to 2013
$1.6M
NICHD NIH HHS P01 HD039386NICHD NIH HHS R01 HD057064NICHD NIH HHS R01 HD080201
6 · The paper itself

Abstract

objectivesIron deficiency (ID) anemia leads to long-term neurodevelopmental deficits by altering iron-dependent brain metabolism. The objective of the study was to determine if ID induces metabolomic abnormalities in the cerebrospinal fluid (CSF) in the pre-anemic stage and to ascertain the aspects of abnormal brain metabolism affected.

methodsStandard hematological parameters [hemoglobin (Hgb), mean corpuscular volume (MCV), transferrin (Tf) saturation, and zinc protoporphyrin/heme (ZnPP/H)] were compared at 2, 4, 6, 8, and 12 months in iron-sufficient (IS; n = 7) and iron-deficient (ID; n = 7) infant rhesus monkeys. Five CSF metabolite ratios were determined at 4, 8, and 12 months using

resultsID infants developed ID (Tf saturation < 25%) by 4 months of age and all became anemic (Hgb < 110 g/L and MCV < 60 fL) at 6 months. Their heme indices normalized by 12 months. Pyruvate/glutamine and phosphocreatine/creatine (PCr/Cr) ratios in CSF were lower in the ID infants by 4 months (P < 0.05). The PCr/Cr ratio remained lower at 8 months (P = 0.02). ZnPP/H, an established blood marker of pre-anemic ID, was positively correlated with the CSF citrate/glutamine ratio (marginal correlation, 0.34; P < 0.001; family wise error rate = 0.001). DISCUSSION: Metabolomic analysis of the CSF is sensitive for detecting the effects of pre-anemic ID on brain energy metabolism. Persistence of a lower PCr/Cr ratio at 8 months, even as hematological measures demonstrated recovery from anemia, indicate that the restoration of brain energy metabolism is delayed. Metabolomic platforms offer a useful tool for early detection of the impact of ID on brain metabolism in infants.

Indexed as

MetabolomicsAnemia, Iron-DeficiencyAnimalsAnimals, NewbornBrainDietDietary CarbohydratesDietary FatsDietary FiberDietary ProteinsFemaleHemoglobinsIronMacaca mulattaMagnetic Resonance SpectroscopyMicronutrientsDietary CarbohydratesDietary FatsDietary FiberDietary ProteinsHemoglobinsIronMicronutrientsProtoporphyrinsTransferrinzinc protoporphyrinCerebrospinal fluidEnergy metabolismInfantIronIron deficiencyMetabolomicsNeurodevelopmentRhesus monkey

Identifiers

PMID27499134
PMCPMC5944323
OpenAlexW2499584266

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.