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@ARTICLE{Wright:162694,
author = {Wright, Sukhvir K and Rosch, Richard E and Wilson, Max A
and Upadhya, Manoj A and Dhangar, Divya R and Clarke-Bland,
Charlie and Wahid, Tamara T and Barman, Sumanta and Goebels,
Norbert and Kreye, Jakob and Prüß, Harald and Jacobson,
Leslie and Bassett, Danielle S and Vincent, Angela and
Greenhill, Stuart D and Woodhall, Gavin L},
title = {{M}ultimodal electrophysiological analyses reveal that
reduced synaptic excitatory neurotransmission underlies
seizures in a model of {NMDAR} antibody-mediated
encephalitis.},
journal = {Communications biology},
volume = {4},
number = {1},
issn = {2399-3642},
address = {London},
publisher = {Springer Nature},
reportid = {DZNE-2021-01351},
pages = {1106},
year = {2021},
note = {CC BY},
abstract = {Seizures are a prominent feature in N-Methyl-D-Aspartate
receptor antibody (NMDAR antibody) encephalitis, a distinct
neuro-immunological disorder in which specific human
autoantibodies bind and crosslink the surface of NMDAR
proteins thereby causing internalization and a state of
NMDAR hypofunction. To further understand ictogenesis in
this disorder, and to test a potential treatment compound,
we developed an NMDAR antibody mediated rat seizure model
that displays spontaneous epileptiform activity in vivo and
in vitro. Using a combination of electrophysiological and
dynamic causal modelling techniques we show that, contrary
to expectation, reduction of synaptic excitatory, but not
inhibitory, neurotransmission underlies the ictal events
through alterations in the dynamical behaviour of
microcircuits in brain tissue. Moreover, in vitro
application of a neurosteroid, pregnenolone sulphate, that
upregulates NMDARs, reduced established ictal activity. This
proof-of-concept study highlights the complexity of circuit
disturbances that may lead to seizures and the potential use
of receptor-specific treatments in antibody-mediated
seizures and epilepsy.},
keywords = {Animals / Anti-N-Methyl-D-Aspartate Receptor Encephalitis:
chemically induced / Autoantibodies: adverse effects /
Disease Models, Animal / Male / Rats / Rats, Wistar /
Synaptic Transmission},
cin = {AG Prüß},
ddc = {570},
cid = {I:(DE-2719)1810003},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34545200},
pmc = {pmc:PMC8452639},
doi = {10.1038/s42003-021-02635-8},
url = {https://pub.dzne.de/record/162694},
}