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Lipids in breast carcinogenesis.

G A Pritchard1, D L Jones, R E Mansel

  • 1Department of Surgery, University of Wales College of Medicine, Cardiff, South Glamorgan, UK.

The British Journal of Surgery
|October 1, 1989
PubMed
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Dietary essential fatty acids, specifically omega-6 and omega-3, significantly reduced human breast carcinoma xenograft growth in mice. This suggests nutritional interventions may aid breast cancer management.

Area of Science:

  • Oncology
  • Nutrition Science
  • Biochemistry

Background:

  • Excess dietary fat is a risk factor for breast carcinoma.
  • Fat quality, not just quantity, may influence cancer development.
  • Essential fatty acids (EFAs) play crucial roles in cellular processes.

Purpose of the Study:

  • To investigate the impact of N-6 and N-3 essential fatty acids on human breast carcinoma xenograft growth.
  • To compare the effects of evening primrose oil and fish oil with control diets.

Main Methods:

  • Human MCF7 breast carcinoma xenografts were implanted in athymic mice.
  • Mice were fed diets supplemented with evening primrose oil (N-6), fish oil (N-3), olive oil, or a control diet lacking EFAs.
  • Tumor weights were measured and compared between groups.

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Main Results:

  • Essential fatty acid supplementation significantly reduced tumor size compared to controls (P < 0.001).
  • Median tumor weights: Fish oil (70 mg), Evening Primrose Oil (133 mg), Olive Oil (212 mg), Control (270 mg).
  • Fish oil and evening primrose oil demonstrated a notable inhibitory effect on tumor growth.

Conclusions:

  • Dietary intake of N-6 and N-3 essential fatty acids can inhibit human breast carcinoma xenograft growth.
  • Nutritional intervention with EFAs may be a valuable strategy in managing breast cancer.
  • Further research into EFA-based therapies for breast carcinoma is warranted.