Abstract
AIM: The present study was designed to study anti-inflammatory activity of Cetirizine in albino rats and compare with standard drug Diclofenac. MATERIAL & METHODS: 1. Carrageenin induced rat paw edema method (Acute inflammation): 5 animals in each group (3groups) received orally 4% Gum acacia, Diclofenac sodium and Cetirizine respectively one hour before carrageenin injection into right paw. The rat paw edema was measured with plethysmograph after 3 hours and percentage inhibition of edema was calculated in each group. 2. Rexin pellet granuloma method (Chronic inflammation): Four rexin pellets were implanted into dorsum skin of each rat of 3 groups (n=5), which include control, Diclofenac and Cetirizine respectively. The animals were treated with fixed doses of drugs once a day for 7 days including the day of implantation of pellets and on 8th day rexin pellets were removed after sacrificing animals. Rexin pellets were kept in incubator at 600C overnight. Pellets were then weighed and percent inhibition of granuloma tissue was calculated. 3. Study of Mast cell counts. RESULT: Cetirizine showed significant anti-inflammatory activity both in acute and chronic animal models. CONCLUSION: Cetirizine may be used as potential drug for both acute and chronic inflammation due to its anti-inflammatory property.
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