Elaidic Acid and Serum Lipoproteins in Starved and Fed Rats

Abstract

The lipids of serum lipoproteins as well as the elaidate content of the lipoprotein major lipid classes were compared in fasted and fed rats which were maintained on a diet rich in elaidate. The results suggest that, following each meal, substantial amounts of cholesteryl elaidate formed in the intestinal mucosa pass into the circulation and are mainly transported by very low density lipoproteins.

Nutrition and Biochemistry of Trans and Positional Fatty Acid Isomers in Hydrogenated Oils

“…This data illustrates the variation in distribution of trans fatty acids in tissues. Researchers have reported a specificity for incorporation of trans fatty acids into lipoprotein lipid classes (45, 184,193). For example, the data in Table 2 suggest discrimination against incorporation of trans isomers into lipoprotein CE and PL fractions relative to TG.…”

“…Thus the trans'content of the lipoprotein lipid classes depends upon which lipoprotein fraction is analyzed, but results are not consistent enough to permit general conclusions. Lipoprotein lipid fatty acids are sensitive to sampling and experimental condi tions, and trans content might be expected to vary significantly for samples from fed and fasted rats (193). For rat brain PC, 67% of the totaI 9t-18: 1 ) 4 C incQrporated was in I-acyl PC and 33% was in 2-acyl PC (104).…”