Abstract
The interaction between oxidised low-density lipoprotein (LDL) and macrophages is known to be important in the development of arteriosclerosis. Macrophages take up oxidised LDL and then become foam cells, which contribute to the thickening of the blood vessel wall. In our previous paper, some flavonoids found in vegetables and fruits were shown to have a protective effect against arteriosclerosis. In this communication, to elucidate the effect of fucose-related compounds on oxidised LDL uptake in macrophages, the inhibitory activity of various fucose-related compounds on the 1,1-dioctadecyl-3,3,3',3'-tetramethylindo-carbocyanine perchlorate-acetylated-LDL (DiI-ac-LDL) uptake reaction in mouse macrophage cell line J774.1 was measured. Fucoidan, 4-deoxy-fucose and fucose-galactose-N-acetyl-glucose significantly inhibited uptake of DiI-ac-LDL into macrophages. The IC50 of 4-deoxy-fucose was 108.4 µM, the highest value of the fucose-related compounds used in the experiments. The protective effects of the fucose-related compounds on atherosclerosis can be used as new health foods.
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