In vivo analgesic, antipyretic and anti-inflammatory potential of leaf extracts and fractions of Eria javanica

J Complement Integr Med. 2017 Mar 1;14(1):/j/jcim.2017.14.issue-1/jcim-2016-0040/jcim-2016-0040.xml. doi: 10.1515/jcim-2016-0040.

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.

MeSH terms

  • Acetic Acid
  • Analgesics / pharmacology
  • Analgesics / therapeutic use*
  • Animals
  • Anti-Inflammatory Agents / pharmacology
  • Anti-Inflammatory Agents / therapeutic use*
  • Antipyretics / pharmacology
  • Antipyretics / therapeutic use*
  • Carrageenan
  • Edema / drug therapy
  • Female
  • Fever / drug therapy
  • Inflammation / drug therapy
  • Male
  • Mice
  • Nociceptive Pain / drug therapy
  • Orchidaceae*
  • Phytotherapy*
  • Plant Extracts / pharmacology
  • Plant Extracts / therapeutic use*
  • Plant Leaves
  • Rats, Wistar
  • Yeasts

Substances

  • Analgesics
  • Anti-Inflammatory Agents
  • Antipyretics
  • Plant Extracts
  • Carrageenan
  • Acetic Acid