Impact of melatonin against pilocarpine incited seizures in rats

Abstract

Epilepsy is a standout amongst the most widely recognized genuine mind issue, can happen at all ages and have numerous potential causes. Epilepsy takes place because of a wide range of cell or biochemical changes, for example, modifications in particle channels work, synapse level (excitatory and inhibitory), synapse receptor work, vitality digestion and oxidative stress. This study was performed to explore the possible antiepileptic effect of Melatonin against pilocarpine-induced seizure in male rats. The research was carried out on (40) healthy male Wister rats weighing between 200-300 gm; they were equally allocated to four groups (10 rats in each group).Group (1) normal group (not received any drug), Group (2) negative control group (received only pilocarpine during induction of seizure, Group (3) positive control group (Valproic acid group received 20 mg/kg orally twice daily) and Group (4) Melatonin group (3 mg/kg received orally once a day).Rats of each group (except normal group) were injected intraperitoneal with pilocarpine hydrochloride (400 mg/kg) after 21 days of tested drugs administered orally. The mean onset and duration of seizure were determined to evaluate the efficacy of tested drugs and to compare these effect with that of the normal group and Valproic acid group. Besides, the mean of onset and duration of seizure, neuroprotective effect (Neu N), NMDA receptor, Sodium channels were measured in all groups after convulsion had been induced to detect the effects of the tested drugs on these parameters by comparing them with normal, negative and positive groups. Melatonin had a preventive and anticonvulsant effect against pilocarpine-induced seizure in rats due to decreasing the onset and severity of seizure this effect may be by blocking sodium channels and NMDA receptor also Melatonin had a neuroprotective effect by preventing damage to neurons this effect by decreasing the inflammation and oxidative stress.