LPDs - «Linked to penumbra» discharges or EEG correlate of excitotoxicity: A review based hypothesis.

Abstract:

:Periodic lateralized epileptiform discharges (PLEDs) or lateralized periodic discharges (LPDs) are a well-known variant of pathological EEG activity. However, the mechanisms underpinning the appearance of this pattern are not completely understood. The heterogeneity of the features derived from LPDs patterns, and the wide range of pathological conditions in which they occur, raise a question about the unifying mechanisms underlying these phenomena. This paper reassesses the current opinion surrounding LPDs which considers glutamate excitotoxicity to be the primary pathophysiological basis, and the penumbral region to be the main morphological substrate. Arguments in favour of this hypothesis are presented, with interpretations supported by evidence from recent literature involving clinical and experimental data. Presently, no single hypothesis places considerable emphasis on the pathochemical properties of LPDs, which are implicitly meaningful towards better understanding of the clinical significance of this pattern.

journal_name

Epilepsy Res

journal_title

Epilepsy research

authors

Chegodaev D,Pavlova NV,Pavlova P,Lvova O

doi

10.1016/j.eplepsyres.2020.106429

subject

Has Abstract

pub_date

2020-10-01 00:00:00

pages

106429

eissn

0920-1211

issn

1872-6844

pii

S0920-1211(20)30219-9

journal_volume

166

pub_type

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