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Proteoglycans (PGs) from the arterial extracellular matrix (ECM) contribute to the trapping of LDL and oxidized LDL (Ox-LDL) in the arterial wall, a phenomenon called "lipoprotein retention". Moreover, we have shown that subsequent to their binding to the matrix, LDL and Ox-LDL are taken up by macrophages. Oxidative stress significantly increases macrophage secretion of ECM-PGs, lipoprotein binding to the ECM and the uptake of ECM-retained lipoproteins by macrophages. The aim of the present study was to determine whether red wine administration to atherosclerotic mice would affect their peritoneal macrophage-derived extracellular matrix properties, such as the glycosaminoglycan content and the ability to bind LDL. In addition, we questioned the ability of LDL bound to the mice peritoneal macrophages-derived ECM to be taken up by macrophages. Red wine administration to atherosclerotic mice did not affect the mice peritoneal macrophages-derived ECM glycosaminoglycan content but it significantly reduced the mice peritoneal macrophages-derived ECM ability to bind LDL and the subsequent uptake of ECM-retained LDL by the macrophages. The present study thus clearly demonstrated the inhibitory effect of red wine consumption by E0 mice on their peritoneal macrophage-derived extracellular matrix atherogenic properties.

Red Wine administration to Apolipoprotein E-deficient Mice reduces their Macrophage-derived Extracellular Matrix Atherogenic Properties