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  • Title: Effect of uremia on incorporation of acetate into rat plasma and tissue lipids.
    Author: Morin RJ, Srikantaiah MV, Davidson WD.
    Journal: Metabolism; 1980 Apr; 29(4):311-6. PubMed ID: 6768956.
    Abstract:
    Experimental uremia was induced in rats by means of bilateral nephrectomy or bilateral ureteral ligation. Incorporation of acetate-1-14C into expired 14CO2 and into plasma and tissue lipids was studied immediately after surgery and at 48 hr, when the rats were uremic. In rats studied immediately after surgery, bilateral nephrectomy, but not bilateral ureteral ligation, significantly decreased the conversion of acetate-1-14C into expired 14CO2. In uremic rats at 48 hr, acetate-1-14C metabolism to 14CO2 was not significantly altered in either group. Plasma triglyceride concentrations and 14C-acetate incorporation into triglycerides were increased in the 48-hr uremic groups, but plasma and liver triglyceride specific radioactivities were not significantly altered. Plasma free fatty acid concentrations and incorporation of acetate into free fatty acids were lower in the 48-hr uremic groups than in controls. Plasma cholesterol concentrations and specific radioactivities were increased in these uremic groups, as were liver free cholesterol specific activities. These results suggest that increased triglyceride and cholesterol synthesis from acetate may contribute to the hypertriglyceridemia and hypercholesterolemia observed in uremic rats.
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