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| 1 | Pharmacological potential of Populus nigra extract as antioxidant,anti-inflammatory,cardiovascular and hepatoprotective agent显示文摘Objective:To evaluate antioxidant,anti-inflammatory,hepatoprotective and vasorelaxant activities of Pupulus nigra flower buds ethanolic extract.Methods:Antioxidant and anti-inflammatory activities of the extract were assessed using respectively the ABTS test and the animal model of carrageenan-induced paw edema.Protection from hepatic toxicity caused by aluminum was examined by histopathologic analysis of liver sections.Vasorelaxant effect was estimated in endothelium-intact and-nibbed rings of porcine coronary arteries precontracted with high concentration of U466I9.Results:The results showed a moderate antioxidant activity(40%),but potent anti-inflammatory activity(49.9%)on carrageenan-induced mice paw edema,and also as revealed by histopathologic examination,complete protection against AlCl_3-induced hepatic toxicity.Relaxant effects of the same exlracl on vascular preparation from porcine aorta precontracted with high concentration of U466I9 were considerable at 10^(-1)g/L,and comparable(P>0.05)between endothelium-intact(67.74%,IC_(50)0.04 mg/ml.)and-rubbed(72.72%,IC_(50)=0.075 mg/ml,)aortic rings.Conclusions:The extract exerted significant anti-inflammatory,hepatoprotective and vasorelaxant activities,the latter being cndothelium-independent believed to be mediated mainly by the ability of components present in the extract to exert antioxidant properties,probably related to an inhibition of Ca^(2+)influx. | Nadjet Debbache-Benaida Dina Atmani-Kilani Valerie Barbara Schini-Keirth Nouredine Djebbli Djebbar Atmani | 2013 | Asian Pacific Journal of Tropical Biomedicine2013，3，9： | 1 |
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