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An aqueous extract of Canarium schweinfurthii attenuates seizures and potentiates sleep in mice: Evidence for involvement of GABA Pathway.
- Source :
-
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie [Biomed Pharmacother] 2021 Oct; Vol. 142, pp. 111973. Date of Electronic Publication: 2021 Jul 31. - Publication Year :
- 2021
-
Abstract
- About 30% of epileptic patients continue to have seizures. The present study investigates the anticonvulsant and sedative effects of an aqueous extract of C. schweinfurthii in mice. Anticonvulsant effects of C. schweinfurthii aqueous extract (0.01-300 mg/kg, p.o.) were tested against 4-aminopyridine (4-AP, 15 mg/kg, i.p.) -, pilocarpine (PILO, 380 mg/kg, i.p.) - and pentylenetetrazole (PTZ, 75 mg/kg, i.p.) -induced seizures, while sedative effects were tested on diazepam (35 mg/kg, i.p.)-induced sleep. Afterward, the most effective dose of the extract (11.9 mg/kg) was antagonized with N-methyl-β-carboline-3-carboxamide or flumazenil. In another set of experiments, mice were sacrificed for the estimation of GABA content and GABA-T activity in the cerebral cortex. The dose of the extract that protected 50% of mice (ED <subscript>50</subscript> ) against 4-AP, PILO, and PTZ was respectively 4.43 mg/kg (versus 12.01 for phenobarbital), 9.59 mg/kg (vs 8.67 for diazepam), and 2.12 mg/kg (vs 0.20 for clonazepam). Further, the ED <subscript>50</subscript> of the extract that increased the duration of sleep was 0.24 mg/kg (vs 0.84 for phenobarbital). N-methyl-β-carboline-3-carboxamide or flumazenil antagonized (p < 0.001) the anticonvulsant effect of C. schweinfurthii in PTZ-induced seizures and diazepam-induced sleep when compared to the negative control group. The extract at all doses increased (p < 0.001) the GABA content and decreased (p < 0.001) GABA-T activity. These findings suggest that C. schweinfurthii possesses anticonvulsant and sedative effects. These effects seem to be mediated via the modulation of the GABA neurotransmission. These data explain the use of this plant to treat epilepsy in Cameroon traditional medicine.<br /> (Copyright © 2021 The Authors. Published by Elsevier Masson SAS.. All rights reserved.)
- Subjects :
- Animals
Anticonvulsants administration & dosage
Anticonvulsants isolation & purification
Cameroon
Diazepam pharmacology
Disease Models, Animal
Dose-Response Relationship, Drug
Epilepsy drug therapy
Hypnotics and Sedatives administration & dosage
Hypnotics and Sedatives isolation & purification
Male
Medicine, African Traditional
Mice
Phenobarbital pharmacology
Plant Extracts administration & dosage
Seizures drug therapy
Sleep drug effects
gamma-Aminobutyric Acid metabolism
Anticonvulsants pharmacology
Burseraceae chemistry
Hypnotics and Sedatives pharmacology
Plant Extracts pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1950-6007
- Volume :
- 142
- Database :
- MEDLINE
- Journal :
- Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
- Publication Type :
- Academic Journal
- Accession number :
- 34343898
- Full Text :
- https://doi.org/10.1016/j.biopha.2021.111973