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Evaluation of Anti-inflammatory and Antioxidant Activity of Premna integrifolia Root
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Rina H. Gokani
Published/Copyright:
June 14, 2011
Roots of Premna integrifolia Linn. Mant. (Verbanacea) are important rasayana (Adaptogenic) drugs and are considered to be useful in the treatment of variety of ailments. The present study was aimed at evaluating the for its anti-inflammatory and antioxidant activities. Pretreatment with a single dose of methanolic extract of P. integrifolia (PIM) (300 mg/kg b.w.) produced significant inhibition on carrageenan-induced rat hind paw edema, histamine induced wheal formation, and acetic acid-induced mouse vascular permeation. In a 7-day study, daily administration of PIM suppressed formalin induced paw edema and cotton pellet-induced rat granuloma formation. The extract also showed significant inhibition of cyclo-oxygenase (COX-I) activity on rat uterus and plasma membrane stabilization. Apart from this, the antioxidant activity (in vitro) of the extracts was evaluated using the anti radical, superoxide scavenging, erythrocyte membrane stability, anti lipid peroxidation, hydroxyl radical scavenging, nitric oxide scavenging and reducing power (ferric thiocynate method and ?-carotene bleaching test) assays. PIM showed significant anti-oxidant activity. In addition, PIM (300mg/kg b.w.) produced no observable sub acute toxicity in mice with in 15 days. The results scientifically demonstrated the anti-inflammatory activity of P. integrifolia roots in various experimental models probably through their antihistaminic, antikinin, COX-inhibitory and antioxidant action. This therefore justifies the folkloric use of the plant.
Published Online: 2011-6-14
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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Keywords for this article
P. integrifolia;
Verbanaceae;
anti-inflammatory activity;
anti-oxidant activity
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