Evidence map›Paper›PMID 28399115›Full record

ArticlePediatric research2017

Neonatal mouse hippocampus: phlebotomy-induced anemia diminishes and treatment with erythropoietin partially rescues mammalian target of rapamycin signaling.

Diana J Wallin, Tara G Zamora, Michelle Alexander, Kathleen M Ennis, Phu V Tran, Michael K Georgieff

Open access · bronzeAbstract read
In one paragraph

Article in Pediatric research, 2017. 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
0.8field-weighted citation impact, top 28% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. Review
  7. Anemia, Iron Supplementation, and the Brain.Clinics in perinatology · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
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.

Diana J WallinGraduate Program in Neuroscience, Department of Neuroscience, University of Minnesota, Minneapolis, Minnesota.
Tara G ZamoraChildren's Hospitals and Clinics of Minnesota, St. Paul, Minnesota.
Michelle AlexanderDivision of Neonatology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota.
Kathleen M EnnisDivision of Neonatology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota.
Phu V TranDivision of Neonatology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota.
Michael K GeorgieffDivision of Neonatology, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota.
University of Minnesota · USChildren’s Minnesota - St. Paul Hospital · US

Funding

University of Minnesota Clinical and Translational Science Institute (UMN CTSI)UL1TR000114 · NCATS · UNIVERSITY OF MINNESOTA · PI BLAZAR, BRUCE R · 2012 to 2015
$35.0M
THE RoLE OF NEONATAL ANEMIA IN LEARNING AND MEMORYP01HL046925 · NHLBI · UNIVERSITY OF IOWA · PI JOSEPHSON, CASSANDRA D · 1992 to 2022
$34.3M
PREDOCTORAL TRAINING OF NEUROSCIENTISTST32GM008471 · NIGMS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI EBNER, TIMOTHY J · 1993 to 2017
$4.9M
NEWBORN IRON DEFICIENCYR01HD029421 · NICHD · UNIVERSITY OF MINNESOTA TWIN CITIES · PI GEORGIEFF, MICHAEL K. · 2000 to 2015
$4.4M
NHLBI NIH HHS P01 HL046925NICHD NIH HHS R01 HD029421
6 · The paper itself

Abstract

BackgroundPhlebotomy-induced anemia (PIA) is common in premature infants and affects neurodevelopment. PIA alters hippocampal metabolism in neonatal mice through tissue hypoxia and iron deficiency. The mammalian target of rapamycin (mTOR) pathway senses the status of critical metabolites (e.g., oxygen, iron), thereby regulating hippocampal growth and function. We determined the effect of PIA and recombinant human erythropoietin (rHuEpo) treatment on mTOR signaling and expression of genes related to mTOR pathway functions.MethodsMice receiving an iron-supplemented diet were phlebotomized from postnatal day (P)3 to a target hematocrit of <25% by P7. Half were maintained at <25% until P14; half received rHuEpo from P7 to increase the hematocrit to 25-28%. Hippocampal phosphorylated to total protein ratios of four key mTOR pathway proteins were measured by western blotting at P14 and compared with non-phlebotomized, non-anemic control mice. mRNA levels of genes regulated by mTOR were measured by quantitative PCR.ResultsPIA suppressed phosphorylation of all mTOR proteins. rHuEpo restored AMP-activated protein kinase (AMPK) and AKT status, and partially rescued the mTOR output protein S6K. PIA and rHuEpo treatment also altered the expression of genes regulated by S6K.ConclusionPIA compromises and rHuEpo treatment partially rescues a pathway regulating neuronal DNA transcription, protein translation, and structural complexity.

Indexed as

Animals, NewbornSignal TransductionAnemiaAnimalsErythropoietinFemaleHippocampusMiceMice, Inbred C57BLPhlebotomyPregnancyTOR Serine-Threonine KinasesErythropoietinmTOR protein, mouseTOR Serine-Threonine Kinases

Identifiers

PMID28399115
PMCPMC5570638
OpenAlexW2606418951

What OpenQuestion holds

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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.