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Understanding the pathophysiological actions of tau oligomers : a critical review of current electrophysiological methods
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Hill, Emily, Wall, Mark J., Moffat, Kevin G. and Karikari , T. (2020) Understanding the pathophysiological actions of tau oligomers : a critical review of current electrophysiological methods. Frontiers in Molecular Neuroscience, 13 . 155. doi:10.3389/fnmol.2020.00155 ISSN 1662-5099.
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Official URL: https://doi.org/10.3389/fnmol.2020.00155
Abstract
Tau is a predominantly neuronal protein that is normally bound to microtubules, where it acts to modulate neuronal and axonal stability. In humans, pathological forms of tau are implicated in a range of diseases that are collectively known as tauopathies. Kinases and phosphatases are responsible for maintaining the correct balance of tau phosphorylation to enable axons to be both stable and labile enough to function properly. In the early stages of tauopathies, this balance is interrupted leading to dissociation of tau from microtubules. This leaves microtubules prone to damage and phosphorylated tau prone to aggregation. Initially, phosphorylated tau forms oligomers, then fibrils, and ultimately neurofibrillary tangles (NFTs). It is widely accepted that the initial soluble oligomeric forms of tau are probably the most pathologically relevant species but there is relatively little quantitative information to explain exactly what their toxic effects are at the individual neuron level. Electrophysiology provides a valuable tool to help uncover the mechanisms of action of tau oligomers on synaptic transmission within single neurons. Understanding the concentration-, time-, and neuronal compartment-dependent actions of soluble tau oligomers on neuronal and synaptic properties are essential to understanding how best to counteract its effects and to develop effective treatment strategies. Here, we briefly discuss the standard approaches used to elucidate these actions, focusing on the advantages and shortcomings of the experimental procedures. Subsequently, we will describe a new approach that addresses specific challenges with the current methods, thus allowing real-time toxicity evaluation at the single-neuron level.
Item Type: | Journal Article | |||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QD Chemistry Q Science > QH Natural history Q Science > QP Physiology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | |||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Oligomers , Neurons , Electrophysiology | |||||||||||||||||||||||||||||||||
Journal or Publication Title: | Frontiers in Molecular Neuroscience | |||||||||||||||||||||||||||||||||
Publisher: | Frontiers Research Foundation | |||||||||||||||||||||||||||||||||
ISSN: | 1662-5099 | |||||||||||||||||||||||||||||||||
Official Date: | 2020 | |||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 13 | |||||||||||||||||||||||||||||||||
Article Number: | 155 | |||||||||||||||||||||||||||||||||
DOI: | 10.3389/fnmol.2020.00155 | |||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 28 July 2020 | |||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 23 September 2020 | |||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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