Abstract
Objective: To assess the analgesic and anti-inflammatory effects of standardized extract of Cotinus coggygria (C. coggygria) in different animal models. Methods: C. coggygria extracts (25, 50, and 100 mg/kg) were administered to rats and mice (n=6) during hot plate, tail-flick, acetic acid-induced writhing, and formalin tests to determine its analgesic efficacy. The anti-inflammatory activity of C. coggygria extracts was evaluated by histamine and carrageenan-induced paw edema, cotton pellet-induced granuloma, and acetic acid-induced peritoneal capillary dye leakage tests. Results: C. coggygria extracts (50 and 100 mg/kg) significantly alleviated thermal and chemical-induced pain in rodents (P<0.05). It also demonstrated notable anti-inflammatory properties by mitigating histamine and carrageenan-induced paw edema, granuloma deposits, and vascular permeability (P<0.05). Moreover, C. coggygria extracts remarkably reduced TNF-α, IL-1β, IL-6, COX-2, and oxidative stress in rat paws (P<0.05). Carrageenan-induced histological aberrations in hind paw tissues were effectively (P<0.05) mitigated by treatment with C. coggygria extracts. Conclusions: C. coggygria Scop. extracts show analgesic and anti-inflammatory effects via inhibition of COX-2 and inflammatory and oxidative mediators.
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