ABSTRACT
The purpose of this study was to examine whether human monocytic line THP-1 after differentiation into adherent macrophages, taken as a model of human macrophages implicated in atheroma, is able to produce lower quantities of O(2)(*)(-) either in the presence of polyphenol-rich olive oil wastewater (OWW) fractions or after OWW preincubation and withdrawal from the medium. In these respective conditions, the purpose was to examine the scavenging activity and the cell action of OWW toward O(2)(*)(-) production. It was clearly seen that OWW fractions lowered the O(2)(*)(-) production in both conditions, leading to the conclusion that they were able to scavenge O(2)(*)(-) and to depress O(2)(*)(-) production in the cell. Given the role of O(2)(*)(-) in LDL oxidation and oxidized LDL in atheroma, these results support an antiatherogenic role of OWW and its potential utilization as a food complement.
