Does Lycopene Offer Human LDL Any Protection Against Myeloperoxidase Activity?

Overview

Journal Mol Cell Biochem

Publisher Springer

Specialty Biochemistry

Date 2011 Oct 12

PMID 21987235

Authors

Poh Yeong Chew

Lucy Riley

Daniel L Graham

Khalid Rahman

Gordon M Lowe

Affiliations

Soon will be listed here.

Abstract

Lycopene is a lipophilic antioxidant that is largely transported in human blood by Low Density Lipoproteins (LDL). One of the early events in the aetiology of atherosclerosis is thought to be the oxidation of LDL. Myeloperoxidase an enzyme secreted by neutrophils and macrophages is thought to oxidise human LDL particles. In this study, isolated human LDL was challenged with myeloperoxidase or copper, and the LDL was screened for lipoperoxidation and oxidation of apolipoprotein B100, depletion of lycopene and oxidation of cholesterol. Myeloperoxidase induced oxidation of LDL through direct interaction with apolipoprotein B100. No lipoperoxidation was observed following myeloperoxidase treatment; however, 7-ketocholesterol was detected indicating the products of myeloperoxidase interact with the surface of the LDL particles. Lycopene does react with the products of myeloperoxidase in solvent, but played no role in protecting against enzyme derived oxidation of human LDL.

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