Oxidized Low Density Cholesterol, oxLDL induced inhibition of macrophage migration may be reversed by Niacin, which explains part of Niacin's atheroprotective effects on cardiovascular disease independent of its effects on plasma lipids. Macrophage foam cells are a type of macrophage that localize to fatty deposits on blood vessel walls. Niacin also inhibited the formation of peroxynitrite (which is a powerful oxidant exhibiting a wide array of tissue damaging effects)
Most "niacin" products are niacinamide. If you want the form discussed in this research, look for nicotinic acid specifically.
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