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Erschienen in: Journal of Neural Transmission 12/2012

01.12.2012 | Basic Neurosciences, Genetics and Immunology - Original Article

Proteasome inhibition leads to early loss of synaptic proteins in neuronal culture

verfasst von: Natasha Bajic, Peter Jenner, Clive G. Ballard, Paul T. Francis

Erschienen in: Journal of Neural Transmission | Ausgabe 12/2012

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Abstract

A dysfunctional ubiquitin proteasome system may be a mediating factor of disease progression in Lewy body dementia (LBD). The effects of proteasome inhibition using lactacystin and epoxomicin in primary neuronal culture were studied to assess the validity of this model to reflect the cortical pathology of LBD. Treatment of primary cortical neurons with 5 μM lactacystin for 24 h led to a 38 % reduction in the levels of β-III-tubulin (p < 0.05), a 48 % reduction in the levels of synaptophysin (p < 0.05) and a 74 % reduction in the levels of drebrin (p < 0.01), when compared to controls. Results for epoxomicin were similar. The loss of neuronal protein occurred prior to any loss of mitochondrial activity or cell death. The results are reflective of the loss of synapses and the synaptic changes observed in LBD, which may be an early event in the neurodegeneration of LBD. The similarities with the pathological changes in LBD highlight the possibility that this model can potentially provide a platform to test novel treatments.
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Metadaten
Titel
Proteasome inhibition leads to early loss of synaptic proteins in neuronal culture
verfasst von
Natasha Bajic
Peter Jenner
Clive G. Ballard
Paul T. Francis
Publikationsdatum
01.12.2012
Verlag
Springer Vienna
Erschienen in
Journal of Neural Transmission / Ausgabe 12/2012
Print ISSN: 0300-9564
Elektronische ISSN: 1435-1463
DOI
https://doi.org/10.1007/s00702-012-0816-9

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