The fat-1 mouse has brain docosahexaenoic acid levels achievable through fish oil feeding.
Fat-1 transgenic mice endogenously convert n-6 to n-3 polyunsaturated fatty acids (PUFA). The aims of this study were to test whether a) fish oil feeding can attain similar brain n-3 PUFA levels as the fat-1 mouse, and b) fat-1 mouse brain docosahexaenoic acid (22:6n-3; DHA) levels can be potentiated by fish oil feeding. Fat-1 mice and their wildtype littermates consumed either a 10% safflower oil (SO) or a 2% fish oil and 8% safflower oil chow (FO). Brain total lipid and phospholipid fraction fatty acids were analyzed using GC-FID. Wildtype mice fed FO chow had similar brain levels of DHA as fat-1 mice fed SO chow. Fat-1 mice fed FO chow had similar brain n-3 PUFA levels as fat-1 mice fed SO chow. In conclusion, brain levels of DHA in the fat-1 mouse can be obtained by and were not further augmented with fish oil feeding.
Orr
Sarah K
SK
Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Tong
Jasmin Y M
JY
Kang
Jing X
JX
Ma
David W L
DW
Bazinet
Richard P
RP
D000818:Animals; D001921:Brain / Q000378:metabolism*; D001923:Brain Chemistry; D004041:Dietary Fats / Q000378:metabolism*; D004281:Docosahexaenoic Acids / Q000378:metabolism*; D015525:Fatty Acids, Omega-3 / Q000378:metabolism*; D005231:Fatty Acids, Unsaturated / Q000378:metabolism*; D005260:Female; D005395:Fish Oils / Q000378:metabolism; D051379:Mice; D008822:Mice, Transgenic; D012450:Safflower Oil / Q000378:metabolism
D004041:Dietary Fats; D015525:Fatty Acids, Omega-3; D005231:Fatty Acids, Unsaturated; D005395:Fish Oils; D004281:Docosahexaenoic Acids; D012450:Safflower Oil