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@ARTICLE{Jahnke:136446,
author = {Jahnke, Heinz-Georg and Braesigk, Annett and Mack, Till G A
and Pönick, Sarah and Striggow, Frank and Robitzki, Andrea
A},
title = {{I}mpedance spectroscopy based measurement system for
quantitative and label-free real-time monitoring of
tauopathy in hippocampal slice cultures.},
journal = {Biosensors and bioelectronics},
volume = {32},
number = {1},
issn = {0956-5663},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {DZNE-2020-02768},
pages = {250-258},
year = {2012},
abstract = {Alzheimer's disease (AD) and other tauopathies comprise
death of cell bodies, synapses and neurites but there is
surprising little knowledge of the temporal sequence and the
causal relationships among these events. Here, we present a
novel biosensoric approach to monitor retrograde neurite
degeneration before cell death occurs. We induced tau
hyperphosphorylation in organotypic hippocampal slice
cultures (OHSC) and applied marker-independent real-time
electrical impedance spectroscopy (EIS) for cellular
real-time pathology monitoring. Using this approach, we were
able to define two distinct phases of neurite degeneration,
first a rapid swelling of axonal processes that manifests
itself in relative impedance above control levels followed
by a slower phase of collapse and subsequent fragmentation
indicated by decreased relative impedance below control
levels. Initial axon swelling is strictly dose-dependent and
swelling intensity correlates with second phase impedance
decrease implicating a causative link between both
degenerative mechanisms. Moreover, suppressing tau
hyperphosphorylation by kinase inhibition nearly prevented
both phases of axon degeneration. Our findings demonstrate
that the temporal sequence of tau-triggered neurite
degeneration can be directly visualized by EIS-based,
non-invasive and label-free monitoring. We therefore suggest
this approach as a powerful extension of high content
applications to study mechanisms of neurite degeneration and
to exploit therapeutic options against AD and tau-related
disorders.},
keywords = {Animals / Biosensing Techniques: instrumentation /
Carbazoles: pharmacology / Cells, Cultured / Dielectric
Spectroscopy: instrumentation / Enzyme Inhibitors:
pharmacology / Equipment Design / Hippocampus: cytology /
Neurites: drug effects / Neurites: pathology / Rats / Rats,
Sprague-Dawley / Tauopathies: drug therapy / Tauopathies:
pathology / tau Proteins: antagonists $\&$ inhibitors /
Carbazoles (NLM Chemicals) / Enzyme Inhibitors (NLM
Chemicals) / SRN 003-556 (NLM Chemicals) / tau Proteins (NLM
Chemicals)},
cin = {AG Striggow},
ddc = {610},
cid = {I:(DE-2719)5000045},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22221799},
doi = {10.1016/j.bios.2011.12.026},
url = {https://pub.dzne.de/record/136446},
}