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Published in: Journal of Neural Transmission 12/2014

01-12-2014 | Translational Neurosciences - Original Article

A reappraisal of Fe(III) adsorption by melanin

Authors: Rhiannon Lee Schroeder, Jacobus Petrus Gerber

Published in: Journal of Neural Transmission | Issue 12/2014

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Abstract

The adsorptive capacity of melanin for Fe(III) was investigated. Iron is involved in promoting the formation of reactive oxygen species which has consequently been associated with Parkinson’s disease. Neuromelanin has been suggested to act as an iron scavenger and, therefore, determining the capacity of melanin to adsorb iron is relevant. Although a few reports have quantified the binding capacity, the current research examined the effect of solution pH on adsorption as well as considering physiologically relevant matrices. In addition, desorption is described for the first time. Our results indicated that adsorption over an acidic pH range was relatively constant and was not significantly affected by the presence of protein or lipid. This paper, therefore, goes beyond published reports by investigating a broader range of factors. It also highlights the importance of melanin in the brain through its homeostatic regulation of Fe(III), through the desorption profile of melanin, a novel result.
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Metadata
Title
A reappraisal of Fe(III) adsorption by melanin
Authors
Rhiannon Lee Schroeder
Jacobus Petrus Gerber
Publication date
01-12-2014
Publisher
Springer Vienna
Published in
Journal of Neural Transmission / Issue 12/2014
Print ISSN: 0300-9564
Electronic ISSN: 1435-1463
DOI
https://doi.org/10.1007/s00702-014-1236-9

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