DARU Journal of Pharmaceutical Sciences17220151213Evaluation of antioxidant, anti-inflammatory and lipoxygenase inhibitory activities of the prenylated coumarin umbelliprenin99103MIranshahiMAskariASahebkarDAdjipavlou-Litina20151213Background and objective: Umbelliprenin, the natural prenylated coumarin distributed in the plants of apiaceae family, has shown various biological activities, especially as a cancer chemopreventive agent. In the present study, umbelliprenin, was examined for in vitro antioxidant activity, in vitro inhibitory activity against lipoxygenase, and in vivo anti-inflammatory activity. Methods: The applied tests were interaction with 1,1-diphenyl-2-picryl-hydrazyl (DPPH) stable free radical, inhibition of lipid peroxidation, inhibition of soybean lipoxygenase and in vivo inhibition of the carrageenin-induced rat paw edema. Results: Umbelliprenin did not show any significant antioxidant activity but exhibited a remarkable and potent inhibition against soybean lipoxygenase (IC50 = 0.0725 μM). This compound, in the in vivo anti-inflammatory test, could also inhibit the carrageenin induced paw edema significantly (39 %).  Conclusion: The observed inhibition of lipoxygenase may be a plausible mechanism for the potent cancer chemopreventive activity of umbelliprenin and may pose this compound as a valuable agent for the treatment of inflammatory diseases.https://daru.tums.ac.ir/index.php/daru/article/view/530https://daru.tums.ac.ir/index.php/daru/article/download/530/419