Cited by 172Iron Metabolism and DisordersTrace Elements in HealthNeurotransmitter Receptor Influence on Behavior

Neonatal Iron Deficiency Results in Irreversible Changes in Dopamine Function in Rats

Open access
Beard, John, Erikson, Keith M., Jones, Byron C.·2003·The Journal of Nutrition

Abstract

Iron deficiency in human infants and in young animal models produces changes in neural functioning that may be related to monoamine metabolism. This study employed both behavioral and biochemical approaches in a design using cross-fostering to examine alterations in dopamine (DA) function when iron deficiency occurs during the neonatal period. We measured brain Fe, dopamine transporters (DAT) and dopamine receptor density in rats made iron deficient, or not, from postnatal day (PND) 4 to PND 14 or 21. Some pups were then weaned to an iron-deficient diet and others to the control diet to examine the reversibility of these effects. Behaviors related to dopamine function were measured. Dopamine D(2) receptor (D(2)R), D(1)R and iron concentrations were approximately 70, 80 and 30% of control values, respectively, in the nucleus accumbens and striatum in iron-deficient rats at PND 14. The DAT density was also reduced to 50% of control density in the nucleus accumbens but was unchanged in the striatum. By PND 21, there was also a significant 50% lowering of DAT, D(1)R and D(2)R densities in the prefrontal cortex (PFC). Iron repletion at PND 21-49 normalized D(1)R, D(2)R, and DAT levels in the nucleus accumbens, PFC and ventral midbrain but not in the striatum. In summary, neonatal iron deficiency is associated with changes in DA biology that vary with duration of iron deficiency, and are not completely normalized despite replenishment of iron status. Changes in DA-related behaviors that were persistent after postweaning iron repletion suggest the existence of a critical neonatal developmental period that is expressed by alterations in DA functioning.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1093/jn/133.4.1174

Cites

32 of 32 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Beard, J., Erikson, K. M., & Jones, B. C.
Affiliations
  • Wake Forest University (US)
  • Wake Forest University Health Sciences (US)
  • Pennsylvania State University (US)
Corresponding author
Beard, John
Venue
The Journal of Nutrition
Publisher
Elsevier BV
Published
2003-04
Volume
133
Issue
4
Pages
1174-1179
ISSN
0022-3166 (ISSN-L)
OpenAlex
W1933823002
Cited by
172
References
32
Citations by year
2026: 4 · 2025: 3 · 2024: 9 · 2023: 4 · 2022: 1 · 2021: 7 · 2020: 3 · 2019: 8 · 2018: 8 · 2017: 7 · 2016: 9 · 2015: 8 · 2014: 6 · 2013: 13 · 2012: 7
FWCI
4.13
Type
journal article
Language
en
Open access
Locations
  • Journal of Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
neonatal iron deficiency, dopaminergic activity, dopamine transporter, dopamine D2 receptor, dopamine D1 receptor, iron repletion, nucleus accumbens, striatum, prefrontal cortex, ventral midbrain, cross-fostering, iron-deficient diet, monoamine metabolism, critical developmental periods
MeSH terms
Iron Deficiencies, Animals, Animals, Newborn, Behavior, Animal, Dopamine, Female, Ligands, Male, Membrane Glycoproteins, Nerve Tissue Proteins, Protein Binding, Rats, Sprague-Dawley, Receptors, Dopamine D1, Receptors, Dopamine D2, Membrane Transport Proteins, Dopamine Plasma Membrane Transport Proteins, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review