[Study of lipoprotein changes in the vessel wall by ultracentrifugation of aortic extracts in discontinuous density gradients].

As shown by stepwise density gradient ultracentrifugation, atherogenic lipoproteins pentrating into aorta wall, underwent conversions, which were accompanied by alterations in their hydratation density. The data obtained suggest that complex formation of lipoproteins with components of connective tissue matrix is one of important steps responsible for conversion of atherogenic lipoproteins in vessel wall.