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dc.contributor.authorGómez-Gálvez, Yolanda
dc.contributor.authorFuller, Heidi R.
dc.contributor.authorSynowsky, Silvia
dc.contributor.authorShirran, Sally L.
dc.contributor.authorGates, Monte A.
dc.identifier.citationGómez-Gálvez , Y , Fuller , H R , Synowsky , S , Shirran , S L & Gates , M A 2020 , ' Quantitative proteomic profiling of the rat substantia nigra places glial fibrillary acidic protein at the hub of proteins dysregulated during aging : implications for idiopathic Parkinson’s disease ' , Journal of Neuroscience Research , vol. Early view .
dc.identifier.otherPURE: 267341550
dc.identifier.otherPURE UUID: 940af3b1-9a24-4183-89ac-83e51e61c52a
dc.identifier.otherRIS: urn:5394E8819F27164FDE48FDBAAB5550ED
dc.identifier.otherORCID: /0000-0003-3516-3507/work/71954860
dc.identifier.otherScopus: 85083059526
dc.identifier.otherWOS: 000534214000011
dc.descriptionThis work was made possible by generous funding from the Keele University ACORN scheme and Keele University School of Medicine.en
dc.description.abstractThere is a strong correlation between aging and onset of idiopathic Parkinson's disease, but little is known about whether cellular changes occur during normal aging that may explain this association. Here, proteomic and bioinformatic analysis was conducted on the substantia nigra (SN) of rats at four stages of life to identify and quantify protein changes throughout aging. This analysis revealed that proteins associated with cell adhesion, protein aggregation and oxidation‐reduction are dysregulated as early as middle age in rats. Glial fibrillary acidic protein (GFAP) was identified as a network hub connecting the greatest number of proteins altered during aging. Furthermore, the isoform of GFAP expressed in the SN varied throughout life. However, the expression levels of the rate‐limiting enzyme for dopamine production, tyrosine hydroxylase (TH), were maintained even in the oldest animals, despite a reduction in the number of dopamine neurons in the SN pars compact(SNc) as aging progressed. This age‐related increase in TH expression per neuron would likely to increase the vulnerability of neurons, since increased dopamine production would be an additional source of oxidative stress. This, in turn, would place a high demand on support systems from local astrocytes, which themselves show protein changes that could affect their functionality. Taken together, this study highlights key processes that are altered with age in the rat SN, each of which converges upon GFAP. These findings offer insight into the relationship between aging and increased challenges to neuronal viability, and indicate an important role for glial cells in the aging process.
dc.relation.ispartofJournal of Neuroscience Researchen
dc.rightsCopyright © 2020 The Authors. Journal of Neuroscience Research published by Wiley Periodicals LLC. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.en
dc.subjectDopaminergic neuronen
dc.subjectGlial fibrillary acidic proteinen
dc.subjectSubstantia nigraen
dc.subjectRC0321 Neuroscience. Biological psychiatry. Neuropsychiatryen
dc.titleQuantitative proteomic profiling of the rat substantia nigra places glial fibrillary acidic protein at the hub of proteins dysregulated during aging : implications for idiopathic Parkinson’s diseaseen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Biomedical Sciences Research Complexen
dc.description.statusPeer revieweden

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