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- W2039687540 abstract "Omega-3 fatty acids, the principal component of fish oil, have been demonstrated to have antiinflammatory properties. The role of eicosapentaenoic acid (EPA) supplementation for cancer patients is currently under investigation; however, the mechanisms of EPA activity have not been defined. The purpose of this study was to characterize tumor-specific and treatment-specific effects of supplemental dietary EPA in an animal model of progressive malignancy.Fischer 344 rats (200-250 g) underwent flank implantation of the methycholanthrene (MCA)-induced fibrosarcoma on day 0. Rats were randomly divided into 3 treatment groups on day 13: EPA (1 mL, 5.0 g/kg per day) + 10 IU vitamin E; corn oil (1 mL) + 10 IU vitamin E, and saline (1 mL) + 10 IU vitamin E (vitamin E was used to prevent fatty acid oxidation). On day 14, gavage feeding was started and was continued through day 28. The animals were killed on day 29, and the tumors were removed. The tumors were weighed and divided by the tumor-free carcass weight to obtain percentage of tumor volume, and the livers were flash frozen. Vascular endothelial growth factor-alpha (VEGF-alpha) and cyclo-oxygenase 2 (COX-2) mRNA were measured by reverse transcription-polymerase chain reaction (RT-PCR).EPA rats had significant reductions in tumor volume compared with isocaloric corn oil and control saline animals (25%, p < .01 and 33%, p < .01, respectively). Rats receiving EPA demonstrated decreased VEGF-alpha mRNA levels (0.023 +/- 0 0.001) compared with those receiving corn oil (0.129 +/- 0.047) or saline (0.150 +/- 0.026; p < .05).These data demonstrate that EPA supplementation inhibits tumor growth, potentially through alterations in the expression of the pro-angiogenic VEGF-alpha. The mechanism(s) of EPA as an inhibitor of tumor-related angiogenic growth factors may be associated with COX-2 enzyme fatty acid metabolism and merits further study." @default.
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- W2039687540 date "2002-09-01" @default.
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- W2039687540 title "Omega-3 fatty acid supplementation reduces tumor growth and vascular endothelial growth factor expression in a model of progressive non-metastasizing malignancy" @default.
- W2039687540 doi "https://doi.org/10.1177/0148607102026005285" @default.
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