Cited by 344Parkinson's Disease Mechanisms and TreatmentsNuclear Receptors and SignalingNeurological disorders and treatments

Deficits in dopaminergic transmission precede neuron loss and dysfunction in a new Parkinson model

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Janezic, Stephanie, Threlfell, Sarah, Dodson, Paul D., Dowie, Megan J., Taylor, Tonya N., Potgieter, Dawid, Parkkinen, Laura, Senior, Steven L. +12 more·2013·Proceedings of the National Academy of Sciences

Abstract

Significance: Elevated expression of the presynaptic protein α-synuclein underlies familial and sporadic Parkinson disease (PD). However, our understanding of how increases in α-synuclein levels drive the sequence of events leading to PD is incomplete. Here, we apply a multidisciplinary longitudinal analysis to a new α-synuclein transgenic mouse model. We show that early-stage decreases in dopamine release and vesicle reclustering precede late-stage changes in neuronal firing properties, measured by in vivo recordings from vulnerable neurons. Accumulated deficits in dopamine neurotransmission and altered neuronal firing are associated with cell death and motor abnormalities, in the absence of protein aggregation in the substantia nigra. These findings have important implications for developing therapies.

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Crossref · 10.1073/pnas.1309143110

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Authors
Janezic, S., Threlfell, S., Dodson, P. D., Dowie, M. J., Taylor, T. N., Potgieter, D., Parkkinen, L., Senior, S. L., Anwar, S., Ryan, B., Deltheil, T., Kosillo, P., Cioroch, M., Wagner, K., Ansorge, O., Bannerman, D. M., Bolam, J. P., Magill, P. J., Cragg, S. J., & Wade-Martins, R.
Affiliations
  • University of Oxford (GB)
  • John Radcliffe Hospital (GB)
  • Oxford Parkinson's Disease Centre
Venue
Proceedings of the National Academy of Sciences
Published
2013-09-30
Volume
110
Issue
42
Pages
E4016-25
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1996194036
Cited by
344
References
30
Citations by year
2026: 16 · 2025: 31 · 2024: 29 · 2023: 28 · 2022: 22 · 2021: 26 · 2020: 28 · 2019: 34 · 2018: 25 · 2017: 29 · 2016: 36 · 2015: 19 · 2014: 19 · 2013: 1
FWCI
15.86
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Explore Bristol Research (publishedVersion)
Funders
  • Wellcome Trust (GR072324MA, GR073141MA, 084655, 087736, 090532/Z/09/Z)
  • Parkinson's UK (G-1003, G-0803, G-1103, J-0901, G-0801)
  • Medical Research Council (MR/J004324/1, MR/L022656/1)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
Keywords
Parkinson's disease, alpha-synuclein, substantia nigra pars compacta, nigrostriatal neurons, dopaminergic terminals, striatum, vesicle distribution, neuronal firing, juxtacellular recording, transgenic mouse model, protein aggregation, motor impairment
MeSH terms
Aging, Animals, Corpus Striatum, Humans, Synaptic Transmission, Substantia Nigra, Parkinsonian Disorders, Chromosomes, Artificial, Bacterial, Mice, alpha-Synuclein, Dopaminergic Neurons

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