title: Assessment of pharmacological activities of two medicinal plant of Bangladesh: Launaea sarmentosa and Aegialitis rotundifolia roxb in the management of pain, pyrexia and inflammation.
abstract: BACKGROUND
  The current study aims at evaluating the analgesic, anti-pyretic and anti-inflammatory properties of methanolic extract of the stem, bark and leaves of Launaea sarmentosa and Aegialitis rotundifolia roxb.
  
  
  RESULTS
  The AELS and AEAR extract presented a significant (***p < 0.001) dose dependent increase in reaction time in writhing method and showed inhibition of 63.1% and 57.1% respectively at the doses of 400 mg/kg body weight while standard drug showed (P < 0.001) inhibition of 69.23%. In tail immersion method, AELS and AEAR showed maximum time of tail retention at 30 min in hot water i.e. 6.93 sec and 6.54 sec respectively at highest doses of 400 mg/kg body weight than lower dose while standard pentazocine showed reaction time of 7.62 sec. The AELS and AEAR extract also exhibited promising anti-inflammatory effect as demonstrated by statistically significant inhibition of paw volume by 32.48% and 26.75% respectively at the dose of 400 mg/kg body weight while the value at the dose of 200 mg/kg body weight were linear to higher dose at the 3rd hour of study. On the other hand, Standard indomethacin inhibited 40.13% of inflammation (***P < 0.001). In Cotton-pellet granuloma method, AELS and AEAR extract at the dose of 400 mg/kg body weight exhibited inhibition of inflammation of 34.7% and 29.1% respectively while standard drug showed (P < 0.001) inhibition of 63.22%. Intraperitoneal administration of AELS and AEAR showed dose dependent decrease in body temperature in brewer's yeast induced hyperthermia in rats at both doses. However, AELS significantly decreased body temperature (***p < 0.001) at 400 mg/kg compared to control.
  
  
  CONCLUSIONS
  Present work propose that the methanolic extract of Launaea sarmentosa and Aegialitis rotundifolia roxb possesses dose dependent pharmacological action which supports its therapeutic use in folk medicine possibly mediated through the inhibition or blocking of release of prostaglandin and/or actions of vasoactive substances such as histamine, serotonin and kinins.
authors.forename: Golam Sarwar
authors.initials: GS
authors.lastname: Raju
authors.forename: Md Mizanur Rahman
authors.initials: MM
authors.lastname: Moghal
authors.forename: Mohammad Salim
authors.initials: MS
authors.lastname: Hossain
authors.forename: Md Mahadi
authors.initials: MM
authors.lastname: Hassan
authors.forename: Md Mustahsan
authors.initials: MM
authors.lastname: Billah
authors.forename: Sayed Koushik
authors.initials: SK
authors.lastname: Ahamed
authors.forename: S M Masud
authors.initials: SM
authors.lastname: Rana
mesh_terms: D000700:Analgesics / Q000627:therapeutic use; D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use; D058633:Antipyretics / Q000627:therapeutic use*; D001241:Aspirin / Q000627:therapeutic use; D019659:Asteraceae / Q000737:chemistry*; D001459:Bangladesh; D004487:Edema / Q000139:chemically induced / Q000188:drug therapy; D005260:Female; D005334:Fever / Q000188:drug therapy*; D007213:Indomethacin / Q000627:therapeutic use; D007249:Inflammation / Q000188:drug therapy; D008297:Male; D051379:Mice; D059408:Pain Management; D008517:Phytotherapy; D010936:Plant Extracts / Q000627:therapeutic use; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism; D029606:Plumbaginaceae / Q000737:chemistry*; D017208:Rats, Wistar; D013997:Time Factors; D023382:Toxicity Tests, Acute
chemical_list: D000700:Analgesics; D000894:Anti-Inflammatory Agents, Non-Steroidal; D058633:Antipyretics; D010936:Plant Extracts; D001241:Aspirin; D007213:Indomethacin