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Epileptiformic activity induced by antidepressants in amygdala-kindled rats.

Author(s): Ago J, Ishikawa T, Matsumoto N, Rahman MA, Kamei C

Affiliation(s): Department of Medicinal Pharmacology, Okayama University Graduate, School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8530, Japan.

Publication date & source: 2007-03-29, Eur J Pharmacol., 560(1):23-8. Epub 2006 Dec 1.

The present study was undertaken to investigate the spontaneous epileptiformic activity induced by antidepressants using amygdala-kindled rats. The intraperitoneal injection of imipramine and amitriptyline resulted in potent behavioral and electroencephalogram (EEG)-detected seizures in amygdala-kindled rats compared with those seen in sham rats (non-kindled rats). Almost the same findings were observed with clomipramine and maprotiline. On the other hand, paroxetine caused no or little behavioral or EEG seizures in either amygdala-kindled or sham rats, even at a dose of 50 mg/kg. In conclusion, our results indicate that epileptiformic activity induced by kindling increases the susceptibility to cyclic antidepressant-induced seizures.

Page last updated: 2007-06-01

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