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The effect of coumarinolignoid cleomiscosins A, B and C isolated from the plant Cleome viscosa on inflammatory mediators were studied in female swiss albino mice. A mixture of coumarinolignoid A, B, and C at 10, 30 and 100 mg/kg body weight once a day for 14 consecutive days were administered orally to the mice. Pro-inflammatory mediators such as IL-6, TNF-alpha and nitric oxide were estimated from culture supernatant obtained from peritoneal macrophages stimulated by LPS and anti-inflammatory mediator IL-4 was estimated from culture supernatant obtained from spleenocytes stimulated by Con-A. For further confirmation, expressions of inflammatory mediators from serum and mortality rate were studied in LPS-induced toxicity model in mice. The expression of Pro-inflammatory mediators was significantly (P <0.05) decreased in coumarinolignoids treatment group in dose dependent manner, whereas the anti-inflammatory mediator expression was significantly increased in coumarinolignoids at 10 mg/kg treatment. Mortality rate was also significantly reduced in treatment group in LPS-induced toxicity model. The result of this study concluded that the oral administration of coumarinolignoids inhibited the pro-inflammatory mediators and enhances the production of anti-inflammatory mediator in dose dependent manner.

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