Whole-body utilization of n-3 PUFA in n-6 PUFA-deficient rats.
We evaluated the utilization of a-linolenic acid (18:3n-3) in growing rats consuming a diet deficient in n-6 PUFA. After 90 d, whole-body 18:3n-3 accumulation was 55% lower, total n-3 PUFA accumulation was 21% lower, and 18:3n-3 disappearance was 14% higher in n-6 PUFA-deficient rats. Part of the reduction of whole-body 18:3n-3 in n-6 PUFA-deficient rats was due to the 25% increase in net conversion of 18:3n-3 to long-chain n-3 PUFA. Despite adequate 18:3n-3 intake, n-6 PUFA deficiency decreased the accumulation of 18:3n-3 and total n-3 PUFA.
Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario MS 3E2, Canada. richard.bazinet@utoronto.ca
Richard P
RP
Bazinet
Holly
H
Douglas
Stephen C
SC
Cunnane
D000818:Animals; D001823:Body Composition; D001835:Body Weight; D004032:Diet; D005227:Fatty Acids / Q000032:analysis; D015525:Fatty Acids, Omega-3 / Q000378:metabolism*; D043371:Fatty Acids, Omega-6 / Q000172:deficiency*; D008297:Male; D010084:Oxidation-Reduction; D051381:Rats; D017207:Rats, Sprague-Dawley
D005227:Fatty Acids; D015525:Fatty Acids, Omega-3; D043371:Fatty Acids, Omega-6