Cited by 221Neurological diseases and metabolismIron Metabolism and DisordersTrace Elements in Health

Iron levels in the human brain: a post-mortem study of anatomical region differences and age-related changes

Ramos, Patrícia, Santos, Agostinho, Pinto, Nair Rosas, Mendes, Ricardo, Magalhães, Teresa, Almeida, Agostinho·2014·Journal of Trace Elements in Medicine and Biology

Abstract

The link between brain iron homeostasis and neurodegenerative disease has been the subject of extensive research. There is increasing evidence of iron accumulation during ageing, and altered iron levels in some specific brain regions in neurodegenerative disease patients have been reported. Using graphite furnace atomic absorption spectrometry after microwave-assisted acid digestion of the samples, iron levels were determined in 14 different areas of the human brain [frontal cortex, superior and middle temporal, caudate nucleus, putamen, globus pallidus, cingulated gyrus, hippocampus, inferior parietal lobule, visual cortex of the occipital lobe, midbrain, pons (locus coeruleus), medulla and cerebellum (dentate nucleus)] of n=42 adult individuals (71±12 years old, range: 53-101 years old) with no known history or evidence of neurodegenerative, neurological or psychiatric disorders. It was found that the iron distribution in the adult human brain is quite heterogeneous. The highest levels were found in the putamen (mean±SD, range: 855±295μg/g, 304-1628μg/g) and globus pallidus (739±390μg/g, 225-1870μg/g), and the lowest levels were observed in the pons (98±43μg/g, 11-253μg/g) and medulla (56±25μg/g, 13-115μg/g). Globally, iron levels proved to be age-related. The positive correlation between iron levels and age was most significant in the basal ganglia (caudate nucleus, putamen and globus pallidus). Compared with the age-matched control group, altered iron levels were observed in specific brain areas of one Parkinson's disease patient (the basal ganglia) and two Alzheimer's disease patients (the hippocampus).

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Crossref · 10.1016/j.jtemb.2013.08.001

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  • Total iron concentrations increase with age in the substantia nigra, putamen, globus pallidus, caudate nucleus, and cortices.

    “Total iron concentrations increase with age in the substantia nigra, putamen, globus pallidus, caudate nucleus, and cortices6,42–44 but why this increase is selective for some areas of the brain is unclear.”

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Authors
Ramos, P., Santos, A., Pinto, N. R., Mendes, R., Magalhães, T., & Almeida, A.
Affiliations
Universidade do Porto (PT)
Corresponding author
Almeida, Agostinho
Venue
Journal of Trace Elements in Medicine and Biology
Publisher
Elsevier BV
Published
2014-01
Volume
28
Issue
1
Pages
13-17
ISSN
0946-672X (ISSN-L)
OpenAlex
W1988540874
Cited by
221
References
40
Citations by year
2026: 19 · 2025: 21 · 2024: 18 · 2023: 19 · 2022: 29 · 2021: 30 · 2020: 22 · 2019: 11 · 2018: 13 · 2017: 11 · 2016: 13 · 2015: 8 · 2014: 6 · 2013: 1
FWCI
5.24
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Trace Elements in Medicine and Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Neurological diseases and metabolism
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
Keywords
brain iron, iron homeostasis, human brain, basal ganglia, putamen, globus pallidus, caudate nucleus, hippocampus, Parkinson's disease, Alzheimer's disease, neurodegenerative diseases, postmortem brain
MeSH terms
Aged, Aged, 80 and over, Aging, Autopsy, Brain, Female, Humans, Iron, Male, Middle Aged, Neurodegenerative Diseases

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