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  • Title: Stem bark chloroform extract of Bombax costatum Pellegr. & Vuillet exhibit anticonvulsant and neuroprotective effects in pentylenetetrazole-induced seizures in rats.
    Author: Muhammad Bello A, Adegoke Salami H, Samaila Malgwi I, Musa Chiroma S.
    Journal: Ann Pharm Fr; 2023 Mar; 81(2):233-247. PubMed ID: 36220462.
    Abstract:
    AIM OF THE STUDY: The study aimed at evaluating the potentials of stem bark extracts of Bombax costatum (B. costatum) on seizure, pentylenetetrazole (PTZ) induced kindling and associated changes in wistar albino rats. MATERIALS AND METHODS: Phase 1 evaluated which extract of B. costatum (chloroform, ethanol and n-hexane) is most effective in preventing seizure in acute PTZ-induced (85mg/kg) seizure in rats. Phase 2 evaluated the potentials of stem bark chloroform extract of B. costatum in PTZ-kindled rats at a dose 250 and 500mg/kg in comparison to diazepam. As its effects on memory, oxidative stress markers, neurotransmitters and brain histology were evaluated. Phase 3 determined the probable curative effects of B. costatum on fully kindled rats. RESULTS: In phase 1, Chloroform extract of B. coststum 500mg/kg is the most effective (P<0.05) in preventing seizure as compared to ethanol and n-hexane extracts. In phase 2, chloroform extract of B. costatum delayed the development of kindling, improved kindling associated cognitive impairment and alterations of glutamate and gamma-aminobutyric acid (GABA). Further, it attenuated oxidative stress besides the maintenance of neuronal architecture of the hippocampus. CONCLUSION: Conclusively, chloroform stem bark extract of B. costatum antagonizes PTZ-induced seizure progression, protects against kindling induced cognitive impairment and oxidative stress. Additionally, it also increases the brain level of GABA at high dose and prevented against kindling-induced hippocampal disruptions. Hence, this justifies its use traditionally in the treatment of epileptic seizures.
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