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Effects of zonisamide on experimental tremors in rats
Hideto Miwa1, Kiwa Hama, Yoshinori Kajimoto
1Department of Neurology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan. h-miwa@wakayama-med.ac.jp
Objects:
To study the effect of zonisamide on experimental tremors in rats.
Methods:
Effect of zonisamide on harmaline- or oxotreorine-induced tremors, and tacrine-induced tremulous jaw movements (TJMs) was studied.
Results:
Zonisamide significantly suppressed both harmaline- and oxotremorine-induced tremors dose-dependently. Zonisamide also significantly suppressed tacrine-induced TJMs, and this effect was not lost under conditions of monoamine-depletion or dopaminergic blockade.
Conclusion:
The anti-tremor effects of zonisamide may be achieved by a non-dopaminergic mechanism. Since it effectively suppressed tremors that are based on different kinds of tremors, we propose a novel perspective of clinical potential of zonisamide as a non-specific, anti-tremor drug.
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