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Updated: Aug 11, 2026
Dietary Supplementation of Polyunsaturated Fatty Acids in Caenorhabditis elegans
Published on: November 29, 2013
Reduced brain DHA content after a single reproductive cycle in female rats fed a diet deficient in N-3
Beth Levant1, Jeffery D Radel, Susan E Carlson
1Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA. blevant@kumc.edu
Background:
Low levels of n-3 polyunsaturated fatty acids (PUFAs), particularly docosahexaenoic acid (DHA, 22:6n3), are implicated in postpartum depression.
Methods:
The effects of pregnancy and lactation on brain phospholipid fatty acid content were determined in female rats fed diets containing sufficient (control) or negligible (deficient) alpha-linolenic acid (18:3n-3), the dietary precursor of DHA, beginning at conception. Female virgins, fed the diets for 6 weeks, served as control animals. Whole brain total phospholipid composition was determined at weaning by GC.
Results:
Brain DHA content of postpartum dams fed the deficient diet was decreased by 21% compared with age-matched virgin control animals, with a reciprocal increase in docosapentaenoic acid (22:5n6) to 243%.
Conclusions:
Under dietary conditions supplying inadequate n-3 PUFAs, maternal brain DHA content can be reduced after a single reproductive cycle. This depletion may affect neuronal function and thus the sensitivity of the postpartum organism to stress.
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