Evidence map›Paper›PMID 23911809›Full record

ArticleNeuroscience2013

Iron deficiency alters expression of dopamine-related genes in the ventral midbrain in mice.

L C Jellen, L Lu, X Wang, E L Unger, C J Earley, R P Allen, R W Williams, B C Jones

Abstract read
In one paragraph

Article in Neuroscience, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.

  1. Putative Animal Models of Restless Legs Syndrome: A Systematic Review and Evaluation of Their Face and Construct Validity.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Pooled it
  2. Trial
  3. Review
  4. Iron in the migraine brain.Histology and histopathology · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Longitudinal Development of Brain Iron Is Linked to Cognition in Youth.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    Article
  14. Why Are Women Prone to Restless Legs Syndrome?International journal of environmental research and public health · 2020
    Review
  15. Review
  16. Article
  17. Is There Any Correlation between Migraine Attacks and Iron Deficiency Anemia? A Case-Control Study.International journal of hematology-oncology and stem cell research · 2019
    Article
  18. New Insights into the Neurobiology of Restless Legs Syndrome.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 2019
    Review
  19. [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
    Article
  20. 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

8 authors at 3 institutions in 2 countries.

L C JellenNeuroscience Institute, The Pennsylvania State University, University Park, PA, USA.
L Lu
X Wang
E L Unger
C J Earley
R P Allen
R W Williams
B C Jones
Pennsylvania State University · USUniversity of Tennessee Health Science Center · USJohns Hopkins University · US

Funding

THE IRON-DOPAMINE CONNECTIONP01AG021190 · NIA · JOHNS HOPKINS UNIVERSITY · PI EARLEY, CHRISTOPHER J · 2004 to 2009
$10.0M
Systems Genetics of Alcohol Response and Stress Effects in CNSU01AA013499 · NIAAA · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI WILLIAMS, ROBERT W. · 2002 to 2016
$4.8M
INIA-STRESS: Informatics and Analysis CoreU01AA016662 · NIAAA · VIRGINIA COMMONWEALTH UNIVERSITY · PI WILLIAMS, ROBERT W. · 2007 to 2016
$2.9M
Analysis of Genetic Variation in Brain Iron Regulation during Iron DeficiencyF31NS060393 · NINDS · PENNSYLVANIA STATE UNIVERSITY, THE · PI JONES, LESLIE CLAIRE · 2008 to 2009
$77k
NIAAA NIH HHS U01 AA013499NIAAA NIH HHS U01 AA016662NIAAA NIH HHS U01AA13499NIA NIH HHS P01 AG021190NIA NIH HHS P01AG021190NINDS NIH HHS 5F31NS060393NINDS NIH HHS F31 NS060393
6 · The paper itself

Abstract

A clear link exists between iron deficiency (ID) and nigrostriatal dopamine malfunction. This link appears to play an important role in at least restless legs syndrome (RLS) if not several other neurological diseases. Yet, the underlying mechanisms remain unclear. The effects of ID on gene expression in the brain have not been studied extensively. Here, to better understand how exactly ID alters dopamine functioning, we investigated the effects of ID on gene expression in the brain, seeking to identify any potential transcription-based mechanisms. We used six strains of recombinant inbred mice (BXD type) known to differ in susceptibility to ID in the brain. Upon weaning, we subjected mice from each strain to either an iron-deficient or iron-adequate diet. After 100 days of dietary treatment, we measured the effects of ID on gene expression in the ventral midbrain, a region containing the substantia nigra. The substantia nigra is the base of the nigrostriatal dopamine pathway and a region particularly affected by iron loss in RLS. We screened for ID-induced changes in expression, including changes in that of both iron-regulating and dopamine-related genes. Results revealed a number of expression changes occurring in ID, with large strain-dependent differences in the genes involved and number of expression changes occurring. In terms of dopamine-related genes, results revealed ID-induced expression changes in three genes with direct ties to nigrostriatal dopamine functioning, two of which have never before been implicated in an iron-dopamine pathway. These were stromal cell-derived factor 1 (Cxcl12, or SDF-1), a ferritin regulator and potent dopamine neuromodulator, and hemoglobin, beta adult chain 1 (Hbb-b1), a gene recently shown to play a functional role in dopaminergic neurons. The extent of up-regulation of these genes varied by strain. This work not only demonstrates a wide genetic variation in the transcriptional response to ID in the brain, but also reveals two novel biochemical pathways by which iron may potentially alter dopamine function.

Indexed as

Iron DeficienciesAnimalsChemokine CXCL12DopamineHemoglobinsMesencephalonMiceOligonucleotide Array Sequence AnalysisReal-Time Polymerase Chain ReactionRestless Legs SyndromeTranscriptomeChemokine CXCL12Cxcl12 protein, mouseDopaminehemoglobin BHemoglobinsAlas2aminolevulinic acid synthase 2analysis of covarianceANCOVABXDCxcl12dopamine receptor 2Drd2false discovery rateFDRferritin heavy-chainFHCGene Set Enrichment AnalysisGSEAHbb-b1IDiron deficiencylog(2) ratioLR ratioradical S-adenosyl methionine domain containing 2Real-Time Polymerase Chain Reactionrecombinant inbred strainsrestless legs syndromeRLSRsad2RT-PCRTfrcTHtransferrin receptortyrosine hydroxylaseventral midbrainVMB

Identifiers

PMID23911809
PMCPMC3795962
OpenAlexW2056708738

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.