Trattner, Sofia
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
Research article2017Peer reviewedOpen access
Pauter, Anna M.; Trattner, Sofia; Gonzalez-Bengtsson, Amanda; Talamonti, Emanuela; Asadi, Abolfazl; Dethlefsen, Olga; Jacobsson, Anders
The molecular details relevant to dietary supplementation of the omega-3 fatty acid DHA in mothers as well as in their offspring are not clear. The PUFA elongase, elongation of very long-chain fatty acid (ELOVL) 2, is a critical enzyme in the formation of DHA in mammals. In order to address the question regarding the origin of DHA during perinatal life, we have used DHA-deficient Elovl2-ablated mice as a model system to analyze the maternal impact on the DHA level in their offspring of various genotypes. Elovl2(-/-) mothers maintained on control diet had significantly lower systemic levels of DHA compared with the Elovl2(+/-) and Elovl2(+/+) mothers. Dietary DHA administration during the pregnancy and lactation periods led to increased DHA accretion in maternal tissues and serum of all genotypes. The proportion of DHA in the liver and serum of the Elovl2(-/-) offspring was significantly lower than in the Elovl2(+/+) offspring. Remarkably, the DHA level in the Elovl2(+/-) offspring nursed by DHA-free-fed Elovl2(-/-) mothers was almost as high as in +/+ pups delivered by +/+ mothers, suggesting that endogenous synthesis in the offspring can compensate for maternal DHA deficiency.(Jlr) Maternal DHA supplementation had a strong impact on offspring hepatic gene expression, especially of the fatty acid transporter, Mfsd2a, suggesting a dynamic interplay between DHA synthesis and DHA uptake in the control of systemic levels in the offspring.
docosahexaenoic acid synthesis; polyunsaturated fatty acid; elongation of very long-chain fatty acid 2; supplementation; pregnancy; lactation; docosahexaenoic acid
Journal of Lipid Research
2017, Volume: 58, number: 1, pages: 111-123 Publisher: AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
Biochemistry and Molecular Biology
DOI: https://doi.org/10.1194/jlr.M070862
https://res.slu.se/id/publ/94086