Incorporation of dietary oleate, linoleate, alpha-linolenate and eicosapentaenoate into the plasma lipid fractions of four strains of rat.
Four strains of rat (Dark Agouti, DA; Ginger Hooded, GH; Portion, P; Hooded Wistar, HW) were fed elemental diets containing different sources of fat at the 10% (w/w) level. The dietary fats used included the following oils; olive (rich in oleate), sunflower (rich in linoleate), linseed (rich in alpha-linolenate) and fish (rich in eicosapentaenoate and docosahexaenoate). Differences between strains in response to individual diets were modest compared with the much greater differences achieved by the dietary treatments. In general, the changes in polyunsaturated fatty acid (PUFA) levels in the plasma lipids of all rat strains followed the major PUFA in the diet. There were, however, strong interactions between dietary n-6 and n-3 PUFA which affected not only the level of particular PUFA in lipid fractions but also the lipid fraction in which a particular PUFA appeared. Our findings indicate that a response to dietary fats in the plasma lipids of one strain of rat can be expected to occur with relatively minor variations in other commonly used rat strains.
Department of Paediatrics and Child Health, Flinders Medical Centre, Adelaide, Australia.
R A
RA
Gibson
M J
MJ
James
M A
MA
Neumann
J S
JS
Hawkes
L G
LG
Cleland
D000818:Animals; D004041:Dietary Fats / Q000378:metabolism*; D015118:Eicosapentaenoic Acid / Q000378:metabolism*; D005395:Fish Oils; D019787:Linoleic Acid; D008041:Linoleic Acids / Q000378:metabolism*; D008042:Linolenic Acids / Q000378:metabolism*; D008043:Linseed Oil; D008055:Lipids / Q000097:blood*; D019301:Oleic Acid; D009829:Oleic Acids / Q000378:metabolism*; D000069463:Olive Oil; D010938:Plant Oils; D051381:Rats; D011919:Rats, Inbred Strains; D000074242:Sunflower Oil; D017962:alpha-Linolenic Acid
D004041:Dietary Fats; D005395:Fish Oils; D008041:Linoleic Acids; D008042:Linolenic Acids; D008055:Lipids; D009829:Oleic Acids; D000069463:Olive Oil; D010938:Plant Oils; D000074242:Sunflower Oil; D017962:alpha-Linolenic Acid; D019301:Oleic Acid; D008043:Linseed Oil; D019787:Linoleic Acid; D015118:Eicosapentaenoic Acid