Lipid composition of RAW cells subjected to various treatments.

Polar lipids have been defined as the sum of phosphatidylcholines, phosphatidylethanolamines, sphingomyelins, ceramides, diacylglycerides, free cholesterol and cholesteryl hemisuccinate. All values are expressed as a mol % of the total polar lipids. The apolar lipids (cholesteryl esters and triacylglycerides) are expressed as a mol % of the total polar lipid fraction. For purposes of comparison, the bottom row shows the lipid composition of Nat-LDL. Chs-LDL are Nat-LDL loaded with Chs with a Chs/LDL particle molar ratio of 1000∶1, Chs-POPC are POPC liposomes with a Chs/POPC molar ratio of 45∶55. The values in the columns entitled “Total Polar Lipids" is a reference point by definition and, therefore, always 100%. These values have only been included to show the standard deviation of the measurement since all the other values are given relative to the “Total Polar Lipid" content.