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Gender differences in the n-3 fatty acid content of tissues

Record type: Article

Dietary n-3 PUFA have many beneficial effects on cell and tissue function and on human health. In mammals the n-3 essential fatty acid alpha-linolenic acid (ALNA) can be converted into longer-chain (LC) n-3 PUFA such as EPA and DHA via a series of desaturase and elongase enzymes that are mainly active in the liver. Human studies have identified that males and females appear to differ in their ability to synthesise EPA and DHA from ALNA, with associated differences in circulating concentrations. Based on studies of women using the contraceptive pill or hormone-replacement therapy and of trans-sexual subjects it is suggested that sex hormones play a role in these differences. The rat has been used to investigate gender differences in n-3 PUFA status since this model allows greater dietary control than is possible in human subjects. Like human subjects, female rats have higher plasma DHA concentrations than males. Rats also respond to increased dietary ALNA in a way that is comparable with available human data. The concentrations of LC n-3 PUFA in rat plasma and tissues are positively associated with circulating concentrations of oestradiol and progesterone and negatively associated with circulating concentrations of testosterone. These findings suggest that sex hormones act to modify plasma and tissue n-3 PUFA content, possibly by altering the expression of desaturase and elongase enzymes in the liver, which is currently under investigation

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Citation

Childs, Caroline E., Romeu-Nadal, Meritxell, Burdge, Graham C. and Calder, Philip C. (2008) Gender differences in the n-3 fatty acid content of tissues Proceedings of the Nutrition Society, 67, (1), pp. 19-27. (doi:10.1017/S0029665108005983).

More information

Published date: February 2008
Additional Information: Research Article
Keywords: pufa, n-3 fatty acid, fish oil, gender, phospholipid
Organisations: Faculty of Medicine, Medicine

Identifiers

Local EPrints ID: 60988
URI: http://eprints.soton.ac.uk/id/eprint/60988
ISSN: 0029-6651
PURE UUID: c29c312e-377a-4a46-a5d1-d18b31d5f7b1
ORCID for Caroline E. Childs: ORCID iD orcid.org/0000-0001-6832-224X
ORCID for Graham C. Burdge: ORCID iD orcid.org/0000-0002-7665-2967

Catalogue record

Date deposited: 29 Sep 2008
Last modified: 17 Jul 2017 14:22

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