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ANTIPSYCHOTICS AND KINDLING Motoshi Yamashita 1 , Kazufumi Akiyama 1 , Mitsumoto Sato 1 , Saburo Otsuki 1 1Department of Neuropsychiatry, Okayama University Medical School pp.909-914
Published Date 1982/9/1
DOI https://doi.org/10.11477/mf.1406205001
  • Abstract
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In order to study the effects of antipsychotics on kindling process and the epileptic events, pharmacological action of antipsychotics on kin-dling process and the kindled convulsion, and changes in (3H)-spiperon binding following kindl-ing were studied in this study. Following results were obtained: 1) Treatment with antipsychotics involving pimozide (0.4 mg/kg), haloperidol (0.4 mg/kg) and spiperone (0.5 mg/kg) facilitated the development of amygdaloid kindling. The number of daily stimulation required to induce the first generalized convulsion was: haloperidol group, 9.7 ; pimozide group, 11.5 ; spiperone group, 15.3 and the control group, 20.2.2) While spiperone had weaker effect on kindling seizure develop-ment, it lowered the threshold stimulus intensity for inducing afterdischarge in the amygdaloid kindled seizure. The effect of spiperone to increase seizure susceptibility was dose depen-dent. In the temporal cortical kindled seizure, however, spiperone has no effect on the threshold intensity necessary to induce afterdischarge. 3) No change was found in (3H)-spiperone binding in the striatum, hippocampus and frontal cortex at one week after the final generalized convulsion. Immediately after ceasing kindled generalized convulsion, there was no change in the (3H)-spiperone binding of the frontal cortex. It was suggested that antipsychotics facilitate the kindling seizure development and increase the amygdaloid kindled seizure susceptibility. The negative results in (3H)-spiperone binding suggest that changes in the serotonergic receptor in the frontal cortex and D2 receptor in the striatum does not partici-pate the kindled seizure susceptibility.


Copyright © 1982, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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