Antiepileptogenic action of 7-chlorokynurenic acid on amygdala kindling of rats

Tazuko Namba, Kiyoshi Morimoto, Norihito Yamada, Saburo Otsuki

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

To investigate the role of strychnine-insensitive glycine receptors in epilepsy, we studied the effects of 7-chlorokynurenic acid (7-CK), a selective strychnine-insensitive glycine receptor antagonist, on amygdala kindling development and previously amygdala-kindled seizures in rats. ICV administration of 7-CK (10 or 20 μg) suppressed amygdala kindling development, assessed according to the motor seizure stage and afterdischarge development, in a dose-dependent manner. However, 7-CK had no significant effect on previously kindled seizures at either of these doses nor did 20 μg at any time (15 min, 30 min, 2 h, and 24 h) after injection studied. These results demonstrate that this selective strychnine-insensitive glycine receptor antagonist has antiepileptogenic activity and suggest a role for the glycine receptors in the contribution of the NMDA receptor complex to epileptogenic events.

Original languageEnglish
Pages (from-to)275-281
Number of pages7
JournalPharmacology Biochemistry and Behavior
Volume46
Issue number2
DOIs
Publication statusPublished - 1993

Fingerprint

Amygdala
Rats
Seizures
Glycine Receptors
N-Methyl-D-Aspartate Receptors
Epilepsy
Injections
7-chlorokynurenic acid
strychnine-insensitive glycine receptor

Keywords

  • 7-Chlorokynuneric acid
  • Amygdala
  • Antiepileptogenic effect
  • Kindling
  • Strychnine-insensitive glycine receptors

ASJC Scopus subject areas

  • Biochemistry
  • Behavioral Neuroscience
  • Pharmacology

Cite this

Antiepileptogenic action of 7-chlorokynurenic acid on amygdala kindling of rats. / Namba, Tazuko; Morimoto, Kiyoshi; Yamada, Norihito; Otsuki, Saburo.

In: Pharmacology Biochemistry and Behavior, Vol. 46, No. 2, 1993, p. 275-281.

Research output: Contribution to journalArticle

Namba, Tazuko ; Morimoto, Kiyoshi ; Yamada, Norihito ; Otsuki, Saburo. / Antiepileptogenic action of 7-chlorokynurenic acid on amygdala kindling of rats. In: Pharmacology Biochemistry and Behavior. 1993 ; Vol. 46, No. 2. pp. 275-281.
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