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Prostaglandin E2 production and T cell function after fish-oil supplementation: response to antioxidant cosupplementation.

Abstract:
BACKGROUND: Prostaglandin E(2) (PGE(2)) inhibits lymphocyte proliferation and the production of interferon-gamma (IFN-gamma) by peripheral blood mononuclear cells, but the effect of PGE(2) on interleukin 4 (IL-4) production is unclear. Fish oil, which contains eicosapentaenoic and docosahexaenoic acids, inhibits production of PGE(2). The effects of fish oil on lymphocyte proliferation and production of IFN-gamma and IL-4 are unclear and may be influenced by the availability of antioxidants. OBJECTIVE: We investigated the effect of dietary fish oil with and without antioxidant cosupplementation on lymphocyte proliferation and the production of PGE(2), IFN-gamma, and IL-4 by peripheral blood mononuclear cells. DESIGN: Sixteen healthy men received dietary fish-oil supplements providing 0.3, 1, and 2 g eicosapentaenoic acid plus docosahexaenoic acid/d for 4 consecutive weeks each (total of 12 wk). All subjects were randomly assigned to daily cosupplementation with either antioxidants (200 microg Se, 3 mg Mn, 30 mg RRR-alpha-tocopheryl succinate, 90 mg ascorbic acid, 450 micro g vitamin A) or placebo. RESULTS: Fish-oil supplementation decreased PGE(2) production and increased IFN-gamma production and lymphocyte proliferation from baseline values. Cosupplementation with antioxidants did not affect cytokine production or lymphocyte proliferation. CONCLUSION: Dietary fish oil modulates production of IFN-gamma and lymphocyte proliferation in a manner consistent with decreased production of PGE(2), but this effect is not modified by antioxidant cosupplementation.
Publication status:
Published

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Institution:
University of Oxford
Division:
MSD
Department:
NDORMS
Role:
Author


Journal:
American journal of clinical nutrition More from this journal
Volume:
78
Issue:
3
Pages:
376-382
Publication date:
2003-09-01
EISSN:
1938-3207
ISSN:
0002-9165


Language:
English
Keywords:
Pubs id:
pubs:127042
UUID:
uuid:1793f405-1e94-4798-8e4d-002844da6d31
Local pid:
pubs:127042
Source identifiers:
127042
Deposit date:
2012-12-19
ARK identifier:

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