TITLE

HPLC Determination of Antilipoxygenase Activity of a Water Infusion of Ligustrum vulgare L. Leaves and Some of Its Constituents

AUTHOR(S)
Muèaji, Pavel; Záhradníková, Anna; Bezáková, Lýdia; Cupáková, Mária; Rauová, Drahomíra; Nagy, Milan
PUB. DATE
October 2011
SOURCE
Molecules;Oct2011, Vol. 16 Issue 10, p8198
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The aim of the study was a HPLC evaluation of the lipoxygenase activity inhibiting activity of a water infusion of Ligustrum vulgare L. leaves and selected isolates from it. The antiradical activity of the water infusion was determined using DPPH, ABTS and FRAP tests. Oleuropein and echinacoside concentrations in the water infusion were determined by HPLC. Water infusion, echinacoside and oleuropein were used for an antilipoxygenase activity assay using lipoxygenase isolated from rat lung cytosol fraction. Activity of 8-LOX, 12-LOX and 15-LOX were monitored through formation of 8-HETE, 12-HETE and 15-HETE, respectively. The water infusion exhibited the highest activity against all lipoxygenases, followed by oleuropein. Echinacoside was ineffective against LOXs in lower concentrations, while higher concentration showed similar inhibition on 8-LOX and 12-LOX. 15-LOX was affected more and the presence of echinacoside remarkably decreased its activity.
ACCESSION #
68633627

 

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