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      • Anti-pyretic and anti-inflammatory activity of chloroform extract of Croton roxburghii in standard animal models

        Sivakumar, T,Rajavel, R,Karthikeyan, D,Duraisamy, R,Srinivasan, K,Kumar, S Suresh,Karki, Subhas S Kyung Hee Oriental Medicine Research Center 2008 Oriental pharmacy and experimental medicine Vol.8 No.3

        The chloroform extract of Croton roxburghii (Family: Euphorbiaceae) was evaluated for its antipyretic effects in Brewer's yeast induced hyperthermia in rats. The anti-inflammatory effect of the Croton roxburghii was also evaluated by using carrageenan, dextran, histamine, serotonin induced rat paw oedema and cotton pellet induced granuloma (chronic) models in rats. The chloroform extract of Croton roxburghii (CECR) exhibited significant anti-pyretic and anti-inflammatory effect at the dose 50, 100 and 200 mg/kg. Maximum inhibition (55.32%) was notedat the dose of 200 mg/kg after 3 h of drug treatment in carrageenan induced paw oedema, whereas the Indomethacin (standard drug) produced 61.33% of inhibition. The extract exhibited significant anti-inflammatory activity in dextran induced paw edema in a dose dependent manner. In the chronic model (cotton pellet induced granuloma) the CECR (200 mg/kg) and Indomethacin (10 mg/kg) showed decreased formation of granuloma tissue by 52.32% and 56.32% respectively. The extract also exhibited a significant antipyretic response in Brewer's yeast induced pyrexia in rats. Thus, the present study revealed that the CECR exhibited significant antipyretic and anti-inflammatory activity in the tested animal models.

      • KCI등재후보

        Anti-pyretic and anti-inflammatory activity of chloroform extract of Croton roxburghii in standard animal models

        T Sivakumar,R Rajavel,D Karthikeyan,R Duraisamy,K Srinivasan,S Suresh kumar,Subhas S Karki 경희대학교 융합한의과학연구소 2008 Oriental Pharmacy and Experimental Medicine Vol.8 No.3

        The chloroform extract of Croton roxburghii (Family: Euphorbiaceae) was evaluated for its antipyretic effects in Brewer’s yeast induced hyperthermia in rats. The anti-inflammatory effect of the Croton roxburghii was also evaluated by using carrageenan, dextran, histamine, serotonin induced rat paw oedema and cotton pellet induced granuloma (chronic) models in rats. The chloroform extract of Croton roxburghii (CECR) exhibited significant anti-pyretic and antiinflammatory effect at the dose 50, 100 and 200 mg/kg. Maximum inhibition (55.32%) was noted at the dose of 200 mg/kg after 3 h of drug treatment in carrageenan induced paw oedema, whereas the Indomethacin (standard drug) produced 61.33% of inhibition. The extract exhibited significant anti-inflammatory activity in dextran induced paw edema in a dose dependent manner. In the chronic model (cotton pellet induced granuloma) the CECR (200 mg/kg) and Indomethacin (10 mg/kg) showed decreased formation of granuloma tissue by 52.32% and 56.32% respectively. The extract also exhibited a significant antipyretic response in Brewer’s yeast induced pyrexia in rats. Thus, the present study revealed that the CECR exhibited significant antipyretic and anti-inflammatory activity in the tested animal models. The chloroform extract of Croton roxburghii (Family: Euphorbiaceae) was evaluated for its antipyretic effects in Brewer’s yeast induced hyperthermia in rats. The anti-inflammatory effect of the Croton roxburghii was also evaluated by using carrageenan, dextran, histamine, serotonin induced rat paw oedema and cotton pellet induced granuloma (chronic) models in rats. The chloroform extract of Croton roxburghii (CECR) exhibited significant anti-pyretic and antiinflammatory effect at the dose 50, 100 and 200 mg/kg. Maximum inhibition (55.32%) was noted at the dose of 200 mg/kg after 3 h of drug treatment in carrageenan induced paw oedema, whereas the Indomethacin (standard drug) produced 61.33% of inhibition. The extract exhibited significant anti-inflammatory activity in dextran induced paw edema in a dose dependent manner. In the chronic model (cotton pellet induced granuloma) the CECR (200 mg/kg) and Indomethacin (10 mg/kg) showed decreased formation of granuloma tissue by 52.32% and 56.32% respectively. The extract also exhibited a significant antipyretic response in Brewer’s yeast induced pyrexia in rats. Thus, the present study revealed that the CECR exhibited significant antipyretic and anti-inflammatory activity in the tested animal models.

      • KCI등재

        Novel Results on Stability Analysis of Neutral-type Neural Networks with Additive Time-varying Delay Components and Leakage Delay

        R. Samidurai,S. Rajavel,R. Sriraman,Ahmed Alsaedi,Fuad E. Alsaadi,Jinde Cao 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.4

        The objective of this paper is to analyze the stability analysis of neutral-type neural networks with additivetime-varying delay and leakage delay. By constructing a suitable augmented Lyapunov-Krasovskii functionalwith triple and four integral terms, some new stability criteria are established in terms of linear matrix inequalities,which is easily solved by various convex optimization techniques. More information of the lower and upper delaybounds of time-varying delays are used to derive the stability criteria, which can lead less conservative results. Theobtained conditions are expressed with linear matrix inequalities (LMIs) whose feasible can be checked easily byMATLAB LMI control toolbox. Finally, two numerical examples are given to demonstrate the effectiveness of theproposed method.

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