Anti-depressant, anxiolytic and muscle relaxant activity of hydroalcoholic extract of Cissampelos pareira linn. Leaves.

2021 
BACKGROUND The ethnopharmacological relevance suggests that the ethnic minorities of India use leaves of Cissampelos pareira L as a traditional medicine for curing various psychopharmacological disorders. OBJECTIVE To evaluate anti-depressant, anxiolytic, and muscle relaxant activity of hydroalcoholic extract of Cissampelos pareira. METHODS Leaves of Cissampelos pareira were extracted using a hydroalcoholic solvent. The safety of hydroalcoholic extract of Cissampelos pareira was assessed by acute oral toxicity (OECD 423). Anti-depressant activity was measured using open field test, locomotor test, despair swim test, and tail suspension test. The anxiolytic activity was assessed using elevated plus maze and hole board test, and skeletal muscle relaxant activity was assessed using rotarod, grip strength, chimney, and inclined plane test. RESULTS No moribund status or mortality was observed in experimental mice up to 2000 mg/kg dose of Cissampelos pareira hydroalcoholic extract (CPHE). In the open field and actophotometer tests, CPHE 200 and 400 mg/kg treated mice with significantly abridged ambulation, a number of central squares crossed, total locomotion, and depicted less coordinated movements. While, in despair swim and tail suspension tests, CPHE 400 mg/kg treated mice significantly decreased duration of immobility and increased number of climbing, confirming its anti-depressant effect. In an elevated plus-maze test, CPHE 200 and 400 mg/kg increased the open arm exploration; in hole board test, CPHE 400 mg/kg treated rats augmented the number of head dips, depicting its anxiolytic effect. In rotarod, grip strength, and inclined plane test, CPHE 400 mg/kg treated mice decreased in fall off time on a rotating rod, suspended wire, or inclined plane. Furthermore, in the chimney test, treatment with CPHE 400 depicted less coordinated movements in mice, and mice of this group took more time to leave the cylinder, depicting its skeletal muscle relaxant effect. CONCLUSION Based on the result, it can be concluded that CPHE 400 mg/kg exhibits strong anti-depressant, anxiolytic, and muscle relaxant effects, justifying its traditional uses.
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