Eicosenoic and docosenoic acid incorporation in serum lipoproteins in rats fed rapeseed oil.
Rats were fed rapeseed oil rich in eicosenoic (20:1) and docosenoic (22:1) acids for 7 days, and the fatty acid composition of the lipid classes of serum and serum lipoproteins was determined. Concentrations of 20:1 and 22:1 acids in the lipid classes were variable, especially among lipoproteins, and were a direct function of the alimentary state of the animal. The results suggest differences in the incorporation of the above acids among the major lipoprotein types and various lipid classes within a given lipoprotein type. The quick partial disappearance of very low density lipoproteins (VLDL) and of low density lipoproteins (LDL) containing 20:1 and 22:1 acids upon starvation and the preferential incorporation of these acids in the triacylglycerols of high density lipoproteins (HDL) are discussed.
D000818:Animals; D001937:Brassica; D002784:Cholesterol / Q000097:blood; D004041:Dietary Fats / Q000378:metabolism; D005215:Fasting; D005231:Fatty Acids, Unsaturated / Q000097:blood* / Q000378:metabolism; D008074:Lipoproteins / Q000097:blood*; D008297:Male; D009821:Oils / Q000378:metabolism*; D010743:Phospholipids / Q000097:blood; D051381:Rats; D014280:Triglycerides / Q000097:blood
D004041:Dietary Fats; D005231:Fatty Acids, Unsaturated; D008074:Lipoproteins; D009821:Oils; D010743:Phospholipids; D014280:Triglycerides; D002784:Cholesterol