Anti-inflammatory secondary metabolites from Scrophularia kotschyana


RENDA G. , DUMAN M. , Kilic M., KORKMAZ B. , Kirmizibekmez H.

HUMAN & EXPERIMENTAL TOXICOLOGY, vol.40, no.12_SUPPL, 2021 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 12_SUPPL
  • Publication Date: 2021
  • Doi Number: 10.1177/09603271211058889
  • Title of Journal : HUMAN & EXPERIMENTAL TOXICOLOGY
  • Keywords: Scrophularia kotschyana, anti-inflammatory activity, formalin test, flavonoid glycosides, iridoid glycosides, FORMALIN TEST, EAST ANATOLIA, HARPAGOSIDE, HARPAGIDE, LUTEOLIN, EXTRACT, PLANTS, BETA, MICE

Abstract

The species belonging to Scrophularia genus grow mainly in Irano-Turanian and Mediterranean regions and have been used as folk remedy for inflammatory-related diseases since ancient times. The present study was aimed to evaluate the anti-inflammatory activity of the extracts of Scrophularia kotschyana as well as the isolated compounds. The aerial parts and the roots of the plant were separately extracted with methanol. Anti-inflammatory activities of both extracts were evaluated with formalin test in mice. As the methanolic extract of the aerial parts significantly (p < .05) inhibited inflammation, it was then submitted to successive solvent extractions with n-hexane, dichloromethane, ethyl acetate and n-butanol to yield subextracts. Anti-inflammatory activities of the subextracts were evaluated within the same test system. Among the subextracts tested, the n-butanol subextract produced a significant (p < .05) anti-inflammatory activity at all doses (5, 10, and 30 mg/kg, ip.). Sequential chromatographic separation of the n-butanol subextract yielded 8-O-acetyl-4(')-O-(E)-p-coumaroylharpagide, 8-O-acetyl-4(')-O-(Z)-p-coumaroylharpagide, beta-sitosterol 3-O-beta-glucopyranoside, apigenin 7-O-beta-glucopyranoside, apigenin 7-O-rutinoside, luteolin 7-O-beta-glucopyranoside and luteolin 7-O-rutinoside. The anti-inflammatory activities of the isolates were evaluated at 5 mg/kg dose. Luteolin 7-O-beta-glucopyranoside and apigenin 7-O-rutinoside caused a significant (p < .05) inhibition of oedema formation.