Introduction:In the recent years, plants containing flavonoids have gained much more interest in research area, as they are found to be specific ligands for benzodiazepine receptors.Material and Methods:In our investigation, we evaluated the neuropharmacological profile of petroleum, chloroform and ethanolic extracts of aerial part of Lippia nodiflora Linn. With experimental models using test such as potentiation of diazepam-induced sleeping time, locomotor activity, motor coordination, exploratory behavior pattern, elevated plus maze and maximal electroshock convulsions. Diazepam at doses of 5, 4, and 1 mg/kg served as standard.Results:Results showed that the ethanolic extract of L. nodifl ora at both doses (250 and 500 mg/kg p.o.) and its chloroform extract at a higher dose of 500 mg/kg produced central inhibitory (sedative) effects, anticonvulsant effect and anxiolytic effect in mice. Values were statistically significant (P < 0.05 and P < 0.01) when compared to the control group. The petroleum ether extract of plant at both dose levels (250 and 500 mg/kg p.o.) did not produce any central effects.Conclusion:In conclusion, we can say that the ethanolic and chloroform extracts showed the central inhibitory activity due to the presence of fl avonoids and this fact was also supported by the finding that the petroleum ether extract did not show any central effect and flavonoids were not found in it.
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