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Effect of topiramate on the kainate-induced status epilepticus, lipid peroxidation and immunoreactivity of rats.
Kubera, M
Budziszewska, B
Jaworska-Feil, L
Basta-Kaim, A
Leśkiewicz, M
Tetich, M
Maes, M
Kenis, G
Marciniak, A
Czuczwar, S J
Jagła, G
Nowak, W
Lasoń, W
Polish journal of pharmacology 2004 Sep-Oct;56: 553-61

Topiramate, a new anticonvulsant, has been reported to possess neuroprotective effects in both in vivo and in vitro experiments. In the present study, the effect of topiramate (40 and 80 mg/kg ip) on the fully developed kainate-induced status epilepticus was evaluated in the rat. Injection of kainate (15 mg/kg ip) evoked recurrent limbic seizures which lasted several hours. Topiramate injected 1.5 h after kainate administration had no effect on the seizures and mortality of the animals. Biochemical study revealed that at 80 mg/kg ip, topiramate significantly attenuated the kainate-induced lipid peroxidation in the piriform cortex and showed similar tendency in the frontal cortex. Besides the central nervous system, the kainate-induced seizures evoked significant changes in immunoreactivity, such as reduction in thymus weight and the proliferative activity of splenocytes, and the splenocyte-increased production of interleukin-10, but not interferon-gamma. Topiramate did not affect the kainate-induced reduction in thymus weight, but attenuated changes in the proliferative activity of splenocytes. It is concluded that topiramate, when given during the fully developed kainate-induced status epilepticus in rats, has no effect on seizures, but attenuates lipid peroxidation in piriform cortex and prevents certain changes in immunoactivity.

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