EVALUATION OF ANTICONVULSANT ACTIVITY OF CALLISTEMON CITRINUS (CURTIS) SKEELS (MYRTACEAE) VOLATILE OIL
The use of medicinal plants is on the rise due to the increase of various diseases and shortcomings of orthodox medicine. For many ailments including convulsion, conventional medicine has not been able to find a lasting solution. This study was directed towards assessing the ethnomedicinal use of Callistemon citrinus leaves in the management of convulsion. The volatile oil of the leaves was extracted and an acute toxicity test was carried out following Lorke’s description. Maximal electroshock (MES), strychnine and pentylenetetrazol anticonvulsant methods were used. Separate groups of albino mice were given 200, 400 and 800 mg/kg doses of the volatile oil. Drug solutions; 30 mg/kg phenobarbitone for MES and 2 mg/kg diazepam for strychnine and pentylenetetrazol models were administered as a positive control. The start of tonic leg extension, duration and percentage mortality was recorded. Doses of 200 and 400 mg/kg significantly (P<0.05) inhibited seizure in the mice with scores of 40 % each in the MES model. There was a dose-dependent reduction in the duration of seizures with 68.47, 70.27 and 81.08 % reductions in the pentylenetetrazol model. No significant coverage was given in the strychnine model. C. citrinus oil protected the mice against pentylenetetrazol and maximal electroshock-induced convulsion hence could contribute to the medical treatment of epilepsy.
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