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AbstractA method for determining lecithin: cholesterol acyltransferase (LCAT) activity is presented. Trace amounts of labelled cholesterol are added to serum or plasma. During a preincubation time in which the LCAT is inhibited by a disulphide, the tracer equilibrates with endogenous lipoprotein cholesterol. The enzyme is reactivated by excess of thiol. The presented method seems to be a good measure for the in vivo blood plasma cholesterol esterification rate as only autologous, non-heated lipoproteins are used in the assay.Key Words: Blood plasmahumancholesterolcholesterol esterificationenzyme activityenzyme inhibitioninborn error of lipid metabolismlecithincholesterol acyltransferase
Stokke et al. (Fri,) studied this question.