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Epilepsy Res. 1988 Jan-Feb;2(1):27-31.

Inhibitory effect of TJ-960 (SK) on pentylenetetrazol-induced EEG power spectrum changes.

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  • 1Department of Physiology, Kanagawa Dental College, Yokosuka, Japan.


Effects of the Japanese kampo medicine 'Shosaiko-to-go-keishika-shyakuyaku-to' (TJ-960), which is a mixture of 9 herbal drugs and is practically equivalent to 'Saiko-keishi-to' (SK), on the pentylenetetrazol (PTZ)-induced EEG power spectrum changes were examined. The EEG power spectrum change with 2 PTZ administrations at an 80 min interval was clearly inhibited by oral administration of 1.0 mg/kg of TJ-960. By separate single administrations of the main component herbal drugs, Bupleuri radix, Cinnamomi cortex, Paeoniae radix and Zingiberis rhizoma, only Paeoniae radix showed statistically significant inhibition of PTZ-induced EEG power spectrum changes at a proportional dose of 1.0 mg/kg of TJ-960. The other main component herbal drugs showed no statistically significant inhibitory effect although they had a tendency to inhibit. These findings suggest that the Japanese Kampo medicine, TJ-960 (SK), has an inhibitory effect on PTZ-induced power spectrum changes and one of the component herbal drugs, Paeoniae radix, is the important component drug.

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