Abstract
Objective: To evaluate the anticonvulsant activity of Nimodipine alone and in combination with Phenytoin, in MES induced seizures.Methods: The study was conducted in mice and MES seizure was induced by Techno electro-convulsometer. In the first part of the study, animals were treated with Nimodipine (20 mg/kg i. p. and 40 mg/kg i. p.) and Phenytoin (0.5 mg/100g i. p. and 1.0 mg/100g i. p.), MES was induced and durations of various phases were noted. Duration of Tonic hindlimb extension (THLE) was taken as an index for antiepileptic activity. In the second part, the animals were treated with a combination of sub effective doses of Nimodipine (20 mg/kg i. p.) and Phenytoin (0.5 mg/100g i. p.), MES was induced and durations of various phases were noted.Results: Nimodipine produced significant antiepileptic activity, in a dose-dependent manner. Phenytoin produced a significant antiepileptic effect in dose of 1.0 mg/100g, but failed to produce any such effect in a dose of 0.5 mg/100g, when administered alone. But when sub-effective doses. Of Nimodipine and Phenytoin were combined, a synergistic effect was seen.Conclusion: Nimodipine posses significant antiepileptic activity, alone, as well as it potentiates the antiepileptic effect of Phenytoin, suggesting the novel application of already proven safe and efficacious calcium channel blockers.
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More From: International Journal of Current Pharmaceutical Research
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