Changes in electrical charge and clearance rate of LDL after the formation of their complexes with bacterial LPS were studied in experiments on Wistar rats. It was found that binding of S. minnesota R595 LPS with (125)I-LDL sharply accelerated clearance of the greater part of LDL complexes, but on the other hand induced the appearance of an LDL-LPS subfraction with slower elimination rate compared to free LDL. Electrophoresis showed that after binding of LPS, LDL acquired a negative charge. These data suggest that the formation of LDL-LPS complexes is accompanied by modification of LDL due to which they acquire atherogenic properties.
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