Inhibition of pro-inflammatory secreted phospholipase A2 by extracts from Cynara cardunculus L

Appl Biochem Biotechnol. 2010 Oct;162(3):662-70. doi: 10.1007/s12010-009-8849-8. Epub 2009 Nov 19.

Abstract

The aim of the present work was to evaluate the anti-inflammatory properties of Cynara cardunculus L. (Asteraceae) during its growth using various solvents such as n-hexane, dichloromethane, acetone, and methanol for air-dried leaves and stems. The anti-inflammatory activities of crude extracts were evaluated by measuring the inhibition potency of mammalian non-pancreatic phospholipases A2 (hG-IIA). The methanol and acetone extracts of leaves harvested in February exhibit potent inhibition of hG-IIA (IC(50) = 50 and 70 microg/ml, respectively). However, the acetone extract of stems harvested in December inhibits the hG-IIA with a lower IC(50) around 130 microg/ml. Fractionation on silica gel and hydrophobic gel of the methanol extract of leaves harvested in February increases the inhibitory effect, and the IC(50) reached 10 microg/ml.

MeSH terms

  • Acetone / chemistry
  • Anti-Inflammatory Agents / chemistry
  • Anti-Inflammatory Agents / pharmacology
  • Cynara / chemistry*
  • Enzyme Activation / drug effects
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / pharmacology*
  • Hexanes / chemistry
  • Methanol / chemistry
  • Phospholipases A2, Secretory / metabolism*
  • Plant Extracts / chemistry
  • Plant Extracts / pharmacology*

Substances

  • Anti-Inflammatory Agents
  • Enzyme Inhibitors
  • Hexanes
  • Plant Extracts
  • Acetone
  • Phospholipases A2, Secretory
  • Methanol