Cited by 156Parkinson's Disease Mechanisms and TreatmentsNeurological diseases and metabolismIron Metabolism and Disorders

Degeneration of nigrostriatal dopaminergic neurons increases iron within the substantia nigra: a histochemical and neurochemical study

Oestreicher, E., Sengstock, G.J., Riederer, P., Olanow, C.W., Dunn, A.J., Arendash, G.W.·1994·Brain Research

Abstract

Parkinson's-diseased (PD) brains have increased levels of iron in the zona compacta of the substantia nigra (SNc). To determine whether these elevated nigral iron levels may be caused secondarily by degeneration of nigrostriatal dopaminergic (NS-DA) neurons, the NS-DA pathway was unilaterally lesioned in rats through 6-hydroxydopamine (6-OHDA) infusion and nigral iron levels evaluated three weeks later. A significant increase was observed in both iron concentration (+35%) and iron content (+33) within the substantia nigra (SN) ipsilateral to comprehensive 6-OHDA lesions. Moreover, ferric iron staining was dramatically increased within the SNc following 6-OHDA lesions, primarily due to the appearance of iron-positive SNc neurons and infiltrating reactive glial cells. Iron staining in the SN zona reticularis was modestly increased after 6-OHDA lesions, but staining in the neostriatum and globus pallidus was unaffected. These results indicate that loss of NS-DA neurons is associated with increased iron levels in the SN. This suggests that increased nigral iron levels in PD may be secondary to some neurodegenerative process. Nonetheless, even a secondary increase in nigral iron levels may be of pathogenic importance in PD because of iron's ability to catalyze neurotoxic free radical formation and perpetuate neurodegeneration.

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Crossref · 10.1016/0006-8993(94)90833-8

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45 of 45 references verified0 citation errors · 0 not checkable

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  • In the 6-hydroxydopamine model of Parkinson's disease, the degeneration of nigrostriatal dopaminergic neurons is associated with increased iron accumulation.

    “Moreover, in the 6-hydroxydopamine model of Parkinson’s disease the degeneration of nigrostriatal dopaminergic neurons is associated with increased iron accumulation.155”

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Authors
Oestreicher, E., Sengstock, G. J., Riederer, P., Olanow, C. W., Dunn, A. J., & Arendash, G. W.
Affiliations
  • University of Würzburg (DE)
  • University of South Florida (US)
  • Louisiana State University (US)
Corresponding author
Arendash, G.W.
Venue
Brain Research
Publisher
Elsevier BV
Published
1994-10
Volume
660
Issue
1
Pages
8-18
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2049800884
Cited by
156
References
47
Citations by year
2026: 1 · 2025: 1 · 2023: 4 · 2022: 7 · 2021: 7 · 2020: 3 · 2019: 2 · 2018: 2 · 2017: 3 · 2016: 1 · 2015: 4 · 2014: 5 · 2013: 7 · 2012: 4
FWCI
3.39
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Neurology › Neurological diseases and metabolism
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
Keywords
Parkinson's disease, nigrostriatal dopaminergic neurons, substantia nigra, iron accumulation, 6-hydroxydopamine lesion, neurodegeneration, reactive glial cells
MeSH terms
Amphetamine, Animals, Behavior, Animal, Corpus Striatum, Histocytochemistry, Iron, Male, Medial Forebrain Bundle, Nerve Degeneration, Neurons, Stereotyped Behavior, Substantia Nigra, Oxidopamine, Rats, Sprague-Dawley, Rats

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