Abstract
An intravenous fat tolerance test (IVFTT) was performed and fasting plasma lipid values determined in 12 healthy normal weight, 18 obese non-diabetic, 9 obese chemical diabetic and 10 obese symptomatic diabetic African subjects. Their insulin responses to an oral glucose load were also determined. Mean plasma triglyceride levels were similar in the normal weight and obese non-diabetic groups but were significantly raised in the two diabetic groups, being highest in the symptomatic diabetics. The fractional removal-rate of an intravenous injection of the fat emulsion Intralipid ® was significantly less in each of the obese diabetic groups compared with the normal weight or obese non-diabetic group. There was a significant negative correlation in all but the symptomatic diabetic group between the fasting triglyceride level and the rate constants for the IVFTT. These results suggest that the rate of triglyceride clearance is an important determinant of the basal plasma triglyceride concentration in urban African subjects.
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