Abstract
Imperata cylindrica (L.) P. Beauv. is an invasive species widely used in treatment of several diseases associated with pain and inflammation in different countries including Madagascar. This work aims to report the isolation of the antioxidant, analgesic and anti-nflammatory compounds from the methanol extract of I. cylindrica. The bio-guided method was used to isolate its bioactive compounds by combining chromatographic methods, writhing test in mice and antioxidant assays. Stigmast-4-en-3-one was isolated as one among the compounds responsible for the analgesic and anti-inflammatory properties and isovanillin as one among the antioxidant compounds from the extract. Stigmast-4-en-3-one showed a good oral pharmacokinetic profile and good binding affinities with some pro-inflammatory targets. It did not show any mutagenic effect, nor a carcinogenic one and had a low risk to be a cardiotoxic agent. All of our results provide scientific justification for its traditional medicinal use in the management of pain and inflammatory related diseases.
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