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Photocarcinogenesis and diet.

H S Black

    Federation Proceedings
    |April 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Dietary unsaturated fats promote skin cancer development by increasing lipid peroxidation. Antioxidants counteract this effect, highlighting the role of dietary lipids and antioxidants in photocarcinogenesis.

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    Area of Science:

    • Biochemistry
    • Dermatology
    • Nutrition Science

    Background:

    • Lipids and their peroxidative products have been suspected in actinically induced cancer for decades.
    • Recent research substantiates the role of dietary lipids in photocarcinogenesis, moving beyond their known potentiation of chemical carcinogenesis.

    Purpose of the Study:

    • To investigate the impact of dietary lipid intake and saturation on photoinduced skin cancer.
    • To explore the relationship between dietary lipid levels, epidermal lipid peroxidation, and photocarcinogenesis.
    • To assess the inhibitory effects of dietary antioxidants on both lipid peroxidation and photocarcinogenesis.

    Main Methods:

    • Studies examining the effects of varying dietary lipid intake and saturation levels on skin cancer development.

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  • Measurement of epidermal lipid peroxidation in relation to dietary lipid consumption.
  • Evaluation of dietary antioxidant supplementation on lipid peroxidation and photocarcinogenesis.

    • Main Results:

    • Both the level and saturation of dietary lipids significantly influence photoinduced skin cancer.
    • Increased intake of unsaturated fats enhances the expression of photoinduced skin cancer.
    • Dietary antioxidants inhibit both lipid peroxidation and photocarcinogenesis, with inhibition levels correlating to cancer enhancement.

    Conclusions:

    • Dietary lipids, particularly unsaturated fats, play a significant role in promoting photocarcinogenesis.
    • Dietary antioxidants can mitigate the pro-carcinogenic effects of lipids in the skin.
    • The mechanisms underlying lipid involvement in chemical and photoinduced carcinogenesis may share common pathways, potentially involving free radical-mediated lipid peroxidation.