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Cholesterol esters and membrane permeability a nmr study

, : Cholesterol esters and membrane permeability a nmr study. Atherosclerosis 28(3): 309-318

Cholesteryl esters were incorporated into phospholipid vesicles up to 5 mol%. Excess ester separates out into a separate phase which resembles the mesomorphic droplets of atherosclerosis. The incorporation of 5 mol% cholesteryl palmitate is shown by 31P NMR studies to increase the permeability of the model membranes to ions 10-fold. The same incorporation of cholesteryl linoleate does not affect the membrane permeability. Implications of these findings and the significance of the cholesteryl ester/free cholesterol ratio on [human] atherosclerosis is discussed.


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