Massed amygdaloid kindling in encéphale isolé cats: its facilitation by naloxone.

Abstract:

:The effect of repetitive administration of naloxone on the development of massed amygdaloid kindling in 'encéphale isolé' cats was studied. Electrical amygdaloid kindling was carried out with a 15 min inter-stimulus interval (ISI) in a control situation with intravenous (i.v.) naloxone administration (2, 4, and 8 mg/kg), 5 min prior to amygdaloid stimulation. It was found that it was possible to complete the amygdaloid kindling process in the encéphale isolé preparation reaching generalized electrographic tonic-clonic self-sustained seizures. The enhancement of the duration, frequency, and propagation of the after-discharge (AD) was accentuated by naloxone which also induced a progressive amplitude increment of the first potential evoked by the onset of the tetanus. The number of trials needed to achieve seizure generalization was reduced in dose-dependent manner by naloxone. The ability of naloxone to accelerate the development of amygdaloid kindling may be related to an inhibitory role of opioid peptides in this process.

journal_name

Epilepsy Res

journal_title

Epilepsy research

authors

Fernández-Guardiola A,Rocha L,Pellicer F,Gutiérrez R,Calvo JM

doi

10.1016/0920-1211(89)90058-2

subject

Has Abstract

pub_date

1989-07-01 00:00:00

pages

55-62

issue

1

eissn

0920-1211

issn

1872-6844

pii

0920-1211(89)90058-2

journal_volume

4

pub_type

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