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  • Title: In vivo analgesic, antipyretic and anti-inflammatory potential of leaf extracts and fractions of Eria javanica.
    Author: Bhuiya NM, Hasan M, Mahmud ZA, Qais N, Kabir MS, Ahmed F, Uddin MM.
    Journal: J Complement Integr Med; 2017 Mar 01; 14(1):. PubMed ID: 28282294.
    Abstract:
    Background The objective of the study was to evaluate the antinociceptive, antipyretic and anti-inflammatory activities of ethanolic extract, methanolic extract and n-hexane and chloroform-soluble fractions of methanolic extract of Eria javanica leaves in animal model (rat and mice). Methods The anti-nociceptive potentials of the extracts were studied using the acetic acid-induced writhing test in mice and the antipyretic activity was investigated using yeast-induced pyrexia in rats. Anti-inflammatory activity test was done on rats at a dose by using carrageenan-induced paw edema test. Results In acetic acid-induced writhing inhibition study in Swiss albino mice, the crude methanolic extract at 200 mg/kg and 400 mg/kg doses and the n-hexane soluble fraction of crude methanolic extract at 400 mg/kg showed statistically significant activity with 53.21 % (p<0.001), 50.36 % (p<0.001) and 67.86 % (p<0.001) inhibition respectively compared to control. The crude ethanolic extract showed statistically significant antipyretic activity from 1 hours and onwards after administration at doses of 200 mg/kg body weight (p<0.005 at 1st hour and p<0.001 at 2nd, 3rd and 4th hour respectively) and 400 mg/kg body weight (p<0.05 at 1st hour and p<0.001 at 2nd, 3rd and 4th hour respectively). The crude methanolic extract showed statistically significant antipyretic activity from 2 hours and onwards at 400 mg/kg body weight (p<0.05 at 2nd hour and p<0.001 at 3rd and 4th hour respectively) and 200 mg/kg body weight dose showed statistically significant antipyretic activity from 3 hours and onward(p<0.001) in Brewer's yeast-induced pyrexia test in albino Wister rats. In carrageenan-induced rat's paw edema test, crude methanolic extract showed statistically significant anti-inflammatory activity from 2nd hour and onwards. The chloroform-soluble fraction of methanolic extract also showed significant activity from 1st hour onwards. Conclusions This study thereby indicates that leaves of E. javanica possess peripheral analgesic, antipyretic and anti-inflammatory activities and therefore a suitable candidate for further study.
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